The presentation of this document has been augmented to identify changes from a previous version. Three kinds of changes are highlighted: new, added text, changed text, and deleted text.
This document is also available in these non-normative formats: XML and Revisions from previous CR draft.
Copyright © 2006 W3C® (MIT, ERCIM, Keio), All Rights Reserved. W3C liability, trademark and document use rules apply.
This document defines an XML Syntax for [XQuery 1.0: An XML Query Language].
This section describes the status of this document at the time of its publication. Other documents may supersede this document. A list of current W3C publications and the latest revision of this technical report can be found in the W3C technical reports index at http://www.w3.org/TR/.
This is a Proposed Recommendation. On 3 November 2005, this specification was published as a Candidate Recommendation, and a Call for Implementations was announced. On 08 June 2006, a revision waspublished in order to give visibility to the technical decisions that had been madein response to commentsreceived sinceinitial publication of the CandidateRecommendation.
Publication as a Proposed Recommendation does not imply endorsement by the W3C Membership. This is a draft document and may be updated, replaced or obsoleted by other documents at any time. It is inappropriate to cite this document as other than work in progress. This specification will remain a Proposed Recommendation until at least 31 December 2006.
This document was produced by the XML Query Working Group, which is part of the XML Activity.
This draft includes corrections and changes based on public comments recorded in the W3C public Bugzilla repository (http://www.w3.org/Bugs/Public/) used for issue tracking on the CandidateRecommendation. A list of substantive changes since the publication of the Candidate Recommendation of 03 November 2005 can be found in D Change log.
An implementation reportis available at http://www.w3.org/XML/Query/test-suite/XQTSReport.html.
The W3C Membership and other interested partiesare invited to review thedocument and, through 31 December 2006, submitcomments in W3C's public Bugzilla system (instructions can be found at http://www.w3.org/XML/2005/04/qt-bugzilla). If access to that system is not feasible, you may send your comments to the W3C XSLT/XPath/XQuery public comments mailing list, public-qt-comments@w3.org. It will be very helpful if you include the string [XQX] in the subject line of your comment, whether made in Bugzilla or in email. Each Bugzilla entry and email message should contain only one comment. Archives of the comments and responses are available at http://lists.w3.org/Archives/Public/public-qt-comments/ .
Membersofthe W3C Advisory Committee willfind the appropriatereview formfor this document by consulting their listof current WBSquestionnaires.Note thatsubstantive technical commentswere expected duringthe Last Call reviewperiod that ended 15 February 2004.
This document was produced by a group operating under the 5 February 2004 W3C Patent Policy. W3C maintains a public list of any patent disclosures made in connection with the deliverables of the group; that page also includes instructions for disclosing a patent. An individual who has actual knowledge of a patent which the individual believes contains Essential Claim(s) must disclose the information in accordance with section 6 of the W3C Patent Policy.
1 Introduction
2 Mapping the XQuery Syntax
3 Examples from the XML Query Use Cases in XML Syntax
3.1 Example 1
3.1.1 XQuery solution in XQuery Use Cases:
3.1.2 A Solution in XQueryX:
3.1.3 Transformation of XQueryX Solution into XQuery
3.1.4 Corresponding Grammar Abstract Parse Tree
3.2 Example 2
3.2.1 XQuery solution in XQuery Use Cases:
3.2.2 A solution in XQueryX:
3.2.3 Transformation of XQueryX Solution into XQuery
3.3 Example 3
3.3.1 XQuery solution in XQuery Use Cases:
3.3.2 A solution in XQueryX:
3.3.3 Transformation of XQueryX Solution into XQuery
3.4 Example 4
3.4.1 XQuery solution in XQuery Use Cases:
3.4.2 A solution in XQueryX:
3.4.3 Transformation of XQueryX Solution into XQuery
4 An XML Schema for the XQuery XML Syntax
5 Conformance
A References
B Transforming XQueryX to XQuery
C The application/xquery+xml Media Type
C.1 Introduction
C.2 Registration of MIME Media Type application/xquery+xml
C.2.1 Encoding Considerations
C.2.2 Security Considerations
C.2.3 Interoperability Considerations
C.2.4 Applications That Use This Media Type
C.2.5 Additional Information
C.2.5.1 Recognizing XQuery Files ("Magic Numbers")
C.2.5.2 File Extensions
C.2.5.3 Macintosh File Type Code(s)
C.2.6 Person and Email Address to Contact For Further Information
C.2.7 Intended Usage
C.2.8 Restrictions on usage
C.2.9 Author/Change Controller
C.2.10 Fragment Identifiers
D Change log (Non-Normative)
The [XML Query 1.0 Requirements] states that "The XML Query Language MAY have more than one syntax binding. One query language syntax MUST be convenient for humans to read and write. One query language syntax MUST be expressed in XML in a way that reflects the underlying structure of the query."
XQueryX is an XML representation of an XQuery. It was created by mapping the productions of the XQuery grammar into XML productions. The result is not particularly convenient for humans to read and write, but it is easy for programs to parse, and because XQueryX is represented in XML, standard XML tools can be used to create, interpret, or modify queries.
Note:
Because the two syntaxes are merely different grammars that express the same query semantics, they share all aspects of an XQuery processing system except for the component that recognizes and translates the source representation of a query (that is, the parser). The aspects that are shared include both the static context and the dynamic context that are defined in [XQuery 1.0: An XML Query Language].
There are several environments in which XQueryX may be useful:
Parser Reuse. In heterogeneous environments, a variety of systems may be used to execute a query. One parser can generate XQueryX for all of these systems.
Queries on Queries. Because XQueryX is represented in XML, queries can be queried and can be transformed into new queries. For instance, a query can be performed against a set of XQueryX queries to determine which queries use FLWOR expressions to range over a set of invoices.
Generating Queries. In some XML-oriented programming environments, it may be more convenient to build a query in its XQueryX representation than in the corresponding XQuery representation, since ordinary XML tools can be used.
Embedding Queries in XML. XQueryX can be embedded directly in an XML document.
The most recent versions of the XQueryX XML Schema and the XQueryX XSLT stylesheet are available at http://www.w3.org/2005/XQueryX/xqueryx.xsd and http://www.w3.org/2005/XQueryX/xqueryx.xsl, respectively.
XQueryX is an XML representation of the abstract syntax found in Appendix A of [XQuery 1.0: An XML Query Language]. The XQueryX syntax is defined by the XQueryX Schema, which is specified in 4 An XML Schema for the XQuery XML Syntax. The XQueryX semantics are defined by a stylesheet that maps an instance of XQueryX to an instance of XQuery; see B Transforming XQueryX to XQuery.
The main data structure in the XQueryX Schema is the set of types that describe expressions. We have chosen to model expressions using substitution groups, with an "expr" abstract base class and a number of intermediate abstract classes.
Consider the following productions from the abstract syntax:
FLWORExpr ::= (ForClause | LetClause)+ WhereClause? OrderByClause? "return" ExprSingle ForClause ::= "for" "$" VarName TypeDeclaration? PositionalVar? "in" ExprSingle ("," "$" VarName TypeDeclaration? PositionalVar? "in" ExprSingle)* LetClause ::= "let" "$" VarName TypeDeclaration? ":=" ExprSingle ("," "$" VarName TypeDeclaration? ":=" ExprSingle)* WhereClause ::= "where" ExprSingle
The following XQueryX Schema definitions reflect the structure of those productions from that abstract syntax:
<!-- The base class --> <xsd:complexType name="expr"/> <xsd:element name="expr" type="expr" abstract="true"/> <!-- Simple wrapper class --> <xsd:complexType name="exprWrapper"> <xsd:sequence> <xsd:element ref="expr"/> </xsd:sequence> </xsd:complexType> <xsd:complexType name="flworExpr"> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:choice maxOccurs="unbounded"> <xsd:element ref="forClause"/> <xsd:element ref="letClause"/> </xsd:choice> <xsd:element name="whereClause" minOccurs="0"/> <xsd:element name="orderByClause" minOccurs="0"/> <xsd:element name="returnClause"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="flworExpr" type="flworExpr" substitutionGroup="expr"/> <xsd:element name="forClause"> <xsd:complexType> <xsd:sequence> <xsd:element ref="forClauseItem" maxOccurs="unbounded"/> </xsd:sequence> </xsd:complexType> </xsd:element> <xsd:element name="forClauseItem"> <xsd:complexType> <xsd:sequence> <xsd:element ref="typedVariableBinding"/> <xsd:element ref="positionalVariableBinding" minOccurs="0"/> <xsd:element name="forExpr" type="exprWrapper"/> </xsd:sequence> </xsd:complexType> </xsd:element> <xsd:element name="letClause"> <xsd:complexType> <xsd:sequence> <xsd:element ref="letClauseItem" maxOccurs="unbounded"/> </xsd:sequence> </xsd:complexType> </xsd:element> <xsd:element name="letClauseItem"> <xsd:complexType> <xsd:sequence> <xsd:element ref="typedVariableBinding"/> <xsd:element name="letExpr" type="exprWrapper"/> </xsd:sequence> </xsd:complexType> </xsd:element> <xsd:element name="whereClause" type="exprWrapper"/> <xsd:element name="returnClause" type="exprWrapper"/>
Since XQuery uses the expression production liberally to allow expressions to be flexibly combined, XQueryX uses the exprWrapper type in embedded contexts to allow all expression types to occur.
Three of following examples are based on the data and queries in the XMP (Experiences and Exemplars) use case in [XML Query Use Cases], while a fourth example is based on the data and queries in the NS (Queries Using Namespaces) use case. For each example, we show the English description of the query, the XQuery solution given in [XML Query Use Cases], an XQueryX solution, and the XQuery that results from applying the XQueryX-to-XQuery transformation defined by the stylesheet in B Transforming XQueryX to XQuery to the XQueryX solution. That produced XQuery is presented only as a sanity-check — the intent of the stylesheet is not to create the identical XQuery expression given in [XML Query Use Cases], but to produce a valid XQuery expression with the same semantics. The semantics of the XQueryX solution are determined by the semantics of the XQuery expression that results from that transformation. The "correctness" of that transformation is determined by asking the following the question: Can some XQueryX processor QX process some XQueryX document D1 to produce results R1, after which the stylesheet is used to translate D1 into an XQuery expression E1 that, when processed by some XQuery processor Q, produces results R2 that are equivalent (under some meaningful definition of "equivalent") to results R1?
Comparison of the results of the XQueryX-to-XQuery transformation given in this document with the XQuery solutions in the [XML Query Use Cases] may be helpful in evaluating the correctness of the XQueryX solution in each example.
The XQuery Use Cases solution given for each example is provided only to assist readers of this document in understanding the XQueryX solution. There is no intent to imply that this document specifies a "compilation" or "transformation" of XQuery syntax into XQueryX syntax.
In the following examples, note that path expressions are expanded to show their structure. Also, note that the prefix syntax for binary operators like "and" makes the precedence explicit. In general, humans find it easier to read an XML representation that does not expand path expressions, but it is less convenient for programmatic representation and manipulation. XQueryX is designed as a language that is convenient for production and modification by software, and not as a convenient syntax for humans to read and write.
Finally, please note that white space, including new lines, have been added to some of the XQueryX documents and XQuery expressions for readability. That additional white space is not produced by the XQueryX-to-XQuery transformation.
Here is Q1 from the [XML Query Use Cases], use case XMP (Experiences and Exemplars): "List books published by Addison-Wesley after 1991, including their year and title."
<bib> { for $b in doc("http://bstore1.example.com/bib.xml")/bib/book where $b/publisher = "Addison-Wesley" and $b/@year > 1991 return <book year="{ $b/@year }"> { $b/title } </book> } </bib>
<?xml version="1.0"?> <xqx:module xmlns:xqx="http://www.w3.org/2005/XQueryX" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.w3.org/2005/XQueryX http://www.w3.org/2005/XQueryX/xqueryx.xsd"> <xqx:mainModule> <xqx:queryBody> <xqx:elementConstructor> <xqx:tagName>bib</xqx:tagName> <xqx:elementContent> <xqx:flworExpr> <xqx:forClause> <xqx:forClauseItem> <xqx:typedVariableBinding> <xqx:varName>b</xqx:varName> </xqx:typedVariableBinding> <xqx:forExpr> <xqx:pathExpr> <xqx:stepExpr> <xqx:filterExpr> <xqx:functionCallExpr> <xqx:functionName>doc</xqx:functionName> <xqx:arguments> <xqx:stringConstantExpr> <xqx:value>http://bstore1.example.com/bib.xml</xqx:value> </xqx:stringConstantExpr> </xqx:arguments> </xqx:functionCallExpr> </xqx:filterExpr> </xqx:stepExpr> <xqx:stepExpr> <xqx:xpathAxis>child</xqx:xpathAxis> <xqx:nameTest>bib</xqx:nameTest> </xqx:stepExpr> <xqx:stepExpr> <xqx:xpathAxis>child</xqx:xpathAxis> <xqx:nameTest>book</xqx:nameTest> </xqx:stepExpr> </xqx:pathExpr> </xqx:forExpr> </xqx:forClauseItem> </xqx:forClause> <xqx:whereClause> <xqx:andOp> <xqx:firstOperand> <xqx:equalOp> <xqx:firstOperand> <xqx:pathExpr> <xqx:stepExpr> <xqx:filterExpr> <xqx:varRef> <xqx:name>b</xqx:name> </xqx:varRef> </xqx:filterExpr> </xqx:stepExpr> <xqx:stepExpr> <xqx:xpathAxis>child</xqx:xpathAxis> <xqx:nameTest>publisher</xqx:nameTest> </xqx:stepExpr> </xqx:pathExpr> </xqx:firstOperand> <xqx:secondOperand> <xqx:stringConstantExpr> <xqx:value>Addison-Wesley</xqx:value> </xqx:stringConstantExpr> </xqx:secondOperand> </xqx:equalOp> </xqx:firstOperand> <xqx:secondOperand> <xqx:greaterThanOp> <xqx:firstOperand> <xqx:pathExpr> <xqx:stepExpr> <xqx:filterExpr> <xqx:varRef> <xqx:name>b</xqx:name> </xqx:varRef> </xqx:filterExpr> </xqx:stepExpr> <xqx:stepExpr> <xqx:xpathAxis>attribute</xqx:xpathAxis> <xqx:nameTest>year</xqx:nameTest> </xqx:stepExpr> </xqx:pathExpr> </xqx:firstOperand> <xqx:secondOperand> <xqx:integerConstantExpr> <xqx:value>1991</xqx:value> </xqx:integerConstantExpr> </xqx:secondOperand> </xqx:greaterThanOp> </xqx:secondOperand> </xqx:andOp> </xqx:whereClause> <xqx:returnClause> <xqx:elementConstructor> <xqx:tagName>book</xqx:tagName> <xqx:attributeList> <xqx:attributeConstructor> <xqx:attributeName>year</xqx:attributeName> <xqx:attributeValueExpr> <xqx:pathExpr> <xqx:stepExpr> <xqx:filterExpr> <xqx:varRef> <xqx:name>b</xqx:name> </xqx:varRef> </xqx:filterExpr> </xqx:stepExpr> <xqx:stepExpr> <xqx:xpathAxis>attribute</xqx:xpathAxis> <xqx:nameTest>year</xqx:nameTest> </xqx:stepExpr> </xqx:pathExpr> </xqx:attributeValueExpr> </xqx:attributeConstructor> </xqx:attributeList> <xqx:elementContent> <xqx:pathExpr> <xqx:stepExpr> <xqx:filterExpr> <xqx:varRef> <xqx:name>b</xqx:name> </xqx:varRef> </xqx:filterExpr> </xqx:stepExpr> <xqx:stepExpr> <xqx:xpathAxis>child</xqx:xpathAxis> <xqx:nameTest>title</xqx:nameTest> </xqx:stepExpr> </xqx:pathExpr> </xqx:elementContent> </xqx:elementConstructor> </xqx:returnClause> </xqx:flworExpr> </xqx:elementContent> </xqx:elementConstructor> </xqx:queryBody> </xqx:mainModule> </xqx:module>
Application of the stylesheet in B Transforming XQueryX to XQuery to the XQueryX solution results in:
<bib>{ for $b in doc("http://bstore1.example.com/bib.xml")/child::bib/child::book where (($b/child::publisher = "Addison-Wesley") and ($b/attribute::year > 1991)) return <book year="{$b/attribute::year}">{$b/child::title}</book> }</bib>
For comparison, here is the abstract parse tree corresponding to the XQuery for Example 1, as produced by the XQuery grammar applets found at http://www.w3.org/2005/qt-applets/xqueryApplet.html.
XPath2 QueryList Module MainModule Prolog QueryBody Expr PathExpr Constructor DirectConstructor DirElemConstructor > LessThanOpOrTagO < TagQName bib DirAttributeList StartTagClose > DirElemContent ElementContentChar DirElemContent ElementContentChar DirElemContent CommonContent EnclosedExpr Lbrace { Expr FLWORExpr ForClause VarName QName b PathExpr FunctionCall FunctionQName doc PathExpr StringLiteral "http://bstore1.example.com/bib.xml" StepExpr AbbrevForwardStep NodeTest NameTest QName bib StepExpr AbbrevForwardStep NodeTest NameTest QName book WhereClause AndExpr and ComparisonExpr = PathExpr VarName QName b StepExpr AbbrevForwardStep NodeTest NameTest QName publisher PathExpr StringLiteral "Addison-Wesley" ComparisonExpr > PathExpr VarName QName b StepExpr AbbrevForwardStep @ NodeTest NameTest QName year PathExpr IntegerLiteral 1991 PathExpr Constructor DirectConstructor DirElemConstructor > LessThanOpOrTagO < TagQName book DirAttributeList S TagQName year ValueIndicator = DirAttributeValue OpenQuot " QuotAttrValueContent CommonContent EnclosedExpr Lbrace { Expr PathExpr VarName QName b StepExpr AbbrevForwardStep @ NodeTest NameTest QName year Rbrace } CloseQuot " StartTagClose > DirElemContent ElementContentChar DirElemContent ElementContentChar DirElemContent ElementContentChar DirElemContent ElementContentChar DirElemContent ElementContentChar DirElemContent ElementContentChar DirElemContent CommonContent EnclosedExpr Lbrace { Expr PathExpr VarName QName b StepExpr AbbrevForwardStep NodeTest NameTest QName title Rbrace } DirElemContent ElementContentChar DirElemContent ElementContentChar DirElemContent ElementContentChar DirElemContent ElementContentChar DirElemContent </ ElementContentChar Rbrace } DirElemContent </ ElementContentChar
Here is Q4 from the [XML Query Use Cases], use case XMP (Experiences and Exemplars): "For each author in the bibliography, list the author's name and the titles of all books by that author, grouped inside a "result" element."
<results> { let $a := doc("http://bstore1.example.com/bib/bib.xml")//author for $last in distinct-values($a/last), $first in distinct-values($a[last=$last]/first) order by $last, $first return <result> <author> <last>{ $last }</last> <first>{ $first }</first> </author> { for $b in doc("http://bstore1.example.com/bib.xml")/bib/book where some $ba in $b/author satisfies ($ba/last = $last and $ba/first=$first) return $b/title } </result> } </results>
<?xml version="1.0"?> <xqx:module xmlns:xqx="http://www.w3.org/2005/XQueryX" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.w3.org/2005/XQueryX http://www.w3.org/2005/XQueryX/xqueryx.xsd"> <xqx:mainModule> <xqx:queryBody> <xqx:elementConstructor> <xqx:tagName>results</xqx:tagName> <xqx:elementContent> <xqx:flworExpr> <xqx:letClause> <xqx:letClauseItem> <xqx:typedVariableBinding> <xqx:varName>a</xqx:varName> </xqx:typedVariableBinding> <xqx:letExpr> <xqx:pathExpr> <xqx:stepExpr> <xqx:filterExpr> <xqx:functionCallExpr> <xqx:functionName>doc</xqx:functionName> <xqx:arguments> <xqx:stringConstantExpr> <xqx:value>http://bstore1.example.com/bib.xml</xqx:value> </xqx:stringConstantExpr> </xqx:arguments> </xqx:functionCallExpr> </xqx:filterExpr> </xqx:stepExpr> <xqx:stepExpr> <xqx:xpathAxis>descendant-or-self</xqx:xpathAxis> <xqx:anyKindTest/> </xqx:stepExpr> <xqx:stepExpr> <xqx:xpathAxis>child</xqx:xpathAxis> <xqx:nameTest>author</xqx:nameTest> </xqx:stepExpr> </xqx:pathExpr> </xqx:letExpr> </xqx:letClauseItem> </xqx:letClause> <xqx:forClause> <xqx:forClauseItem> <xqx:typedVariableBinding> <xqx:varName>last</xqx:varName> </xqx:typedVariableBinding> <xqx:forExpr> <xqx:functionCallExpr> <xqx:functionName>distinct-values</xqx:functionName> <xqx:arguments> <xqx:pathExpr> <xqx:stepExpr> <xqx:filterExpr> <xqx:varRef> <xqx:name>a</xqx:name> </xqx:varRef> </xqx:filterExpr> </xqx:stepExpr> <xqx:stepExpr> <xqx:xpathAxis>child</xqx:xpathAxis> <xqx:nameTest>last</xqx:nameTest> </xqx:stepExpr> </xqx:pathExpr> </xqx:arguments> </xqx:functionCallExpr> </xqx:forExpr> </xqx:forClauseItem> <xqx:forClauseItem> <xqx:typedVariableBinding> <xqx:varName>first</xqx:varName> </xqx:typedVariableBinding> <xqx:forExpr> <xqx:functionCallExpr> <xqx:functionName>distinct-values</xqx:functionName> <xqx:arguments> <xqx:pathExpr> <xqx:stepExpr> <xqx:filterExpr> <xqx:varRef> <xqx:name>a</xqx:name> </xqx:varRef> </xqx:filterExpr> <xqx:predicates> <xqx:equalOp> <xqx:firstOperand> <xqx:pathExpr> <xqx:stepExpr> <xqx:filterExpr> <xqx:contextItemExpr/> </xqx:filterExpr> </xqx:stepExpr> <xqx:stepExpr> <xqx:xpathAxis>child</xqx:xpathAxis> <xqx:nameTest>last</xqx:nameTest> </xqx:stepExpr> </xqx:pathExpr> </xqx:firstOperand> <xqx:secondOperand> <xqx:varRef> <xqx:name>last</xqx:name> </xqx:varRef> </xqx:secondOperand> </xqx:equalOp> </xqx:predicates> </xqx:stepExpr> <xqx:stepExpr> <xqx:xpathAxis>child</xqx:xpathAxis> <xqx:nameTest>first</xqx:nameTest> </xqx:stepExpr> </xqx:pathExpr> </xqx:arguments> </xqx:functionCallExpr> </xqx:forExpr> </xqx:forClauseItem> </xqx:forClause> <xqx:orderByClause> <xqx:orderBySpec> <xqx:orderByExpr> <xqx:varRef> <xqx:name>last</xqx:name> </xqx:varRef> </xqx:orderByExpr> </xqx:orderBySpec> <xqx:orderBySpec> <xqx:orderByExpr> <xqx:varRef> <xqx:name>first</xqx:name> </xqx:varRef> </xqx:orderByExpr> </xqx:orderBySpec> </xqx:orderByClause> <xqx:returnClause> <xqx:elementConstructor> <xqx:tagName>result</xqx:tagName> <xqx:elementContent> <xqx:elementConstructor> <xqx:tagName>author</xqx:tagName> <xqx:elementContent> <xqx:elementConstructor> <xqx:tagName>last</xqx:tagName> <xqx:elementContent> <xqx:varRef> <xqx:name>last</xqx:name> </xqx:varRef> </xqx:elementContent> </xqx:elementConstructor> <xqx:elementConstructor> <xqx:tagName>first</xqx:tagName> <xqx:elementContent> <xqx:varRef> <xqx:name>first</xqx:name> </xqx:varRef> </xqx:elementContent> </xqx:elementConstructor> </xqx:elementContent> </xqx:elementConstructor> <xqx:flworExpr> <xqx:forClause> <xqx:forClauseItem> <xqx:typedVariableBinding> <xqx:varName>b</xqx:varName> </xqx:typedVariableBinding> <xqx:forExpr> <xqx:pathExpr> <xqx:stepExpr> <xqx:filterExpr> <xqx:functionCallExpr> <xqx:functionName>doc</xqx:functionName> <xqx:arguments> <xqx:stringConstantExpr> <xqx:value>http://bstore1.example.com/bib.xml</xqx:value> </xqx:stringConstantExpr> </xqx:arguments> </xqx:functionCallExpr> </xqx:filterExpr> </xqx:stepExpr> <xqx:stepExpr> <xqx:xpathAxis>child</xqx:xpathAxis> <xqx:nameTest>bib</xqx:nameTest> </xqx:stepExpr> <xqx:stepExpr> <xqx:xpathAxis>child</xqx:xpathAxis> <xqx:nameTest>book</xqx:nameTest> </xqx:stepExpr> </xqx:pathExpr> </xqx:forExpr> </xqx:forClauseItem> </xqx:forClause> <xqx:whereClause> <xqx:quantifiedExpr> <xqx:quantifier>some</xqx:quantifier> <xqx:quantifiedExprInClause> <xqx:typedVariableBinding> <xqx:varName>ba</xqx:varName> </xqx:typedVariableBinding> <xqx:sourceExpr> <xqx:pathExpr> <xqx:stepExpr> <xqx:filterExpr> <xqx:varRef> <xqx:name>b</xqx:name> </xqx:varRef> </xqx:filterExpr> </xqx:stepExpr> <xqx:stepExpr> <xqx:xpathAxis>child</xqx:xpathAxis> <xqx:nameTest>author</xqx:nameTest> </xqx:stepExpr> </xqx:pathExpr> </xqx:sourceExpr> </xqx:quantifiedExprInClause> <xqx:predicateExpr> <xqx:andOp> <xqx:firstOperand> <xqx:equalOp> <xqx:firstOperand> <xqx:pathExpr> <xqx:stepExpr> <xqx:filterExpr> <xqx:varRef> <xqx:name>ba</xqx:name> </xqx:varRef> </xqx:filterExpr> </xqx:stepExpr> <xqx:stepExpr> <xqx:xpathAxis>child</xqx:xpathAxis> <xqx:nameTest>last</xqx:nameTest> </xqx:stepExpr> </xqx:pathExpr> </xqx:firstOperand> <xqx:secondOperand> <xqx:varRef> <xqx:name>last</xqx:name> </xqx:varRef> </xqx:secondOperand> </xqx:equalOp> </xqx:firstOperand> <xqx:secondOperand> <xqx:equalOp> <xqx:firstOperand> <xqx:pathExpr> <xqx:stepExpr> <xqx:filterExpr> <xqx:varRef> <xqx:name>ba</xqx:name> </xqx:varRef> </xqx:filterExpr> </xqx:stepExpr> <xqx:stepExpr> <xqx:xpathAxis>child</xqx:xpathAxis> <xqx:nameTest>first</xqx:nameTest> </xqx:stepExpr> </xqx:pathExpr> </xqx:firstOperand> <xqx:secondOperand> <xqx:varRef> <xqx:name>first</xqx:name> </xqx:varRef> </xqx:secondOperand> </xqx:equalOp> </xqx:secondOperand> </xqx:andOp> </xqx:predicateExpr> </xqx:quantifiedExpr> </xqx:whereClause> <xqx:returnClause> <xqx:pathExpr> <xqx:stepExpr> <xqx:filterExpr> <xqx:varRef> <xqx:name>b</xqx:name> </xqx:varRef> </xqx:filterExpr> </xqx:stepExpr> <xqx:stepExpr> <xqx:xpathAxis>child</xqx:xpathAxis> <xqx:nameTest>title</xqx:nameTest> </xqx:stepExpr> </xqx:pathExpr> </xqx:returnClause> </xqx:flworExpr> </xqx:elementContent> </xqx:elementConstructor> </xqx:returnClause> </xqx:flworExpr> </xqx:elementContent> </xqx:elementConstructor> </xqx:queryBody> </xqx:mainModule> </xqx:module>
Application of the stylesheet in B Transforming XQueryX to XQuery to the XQueryX solution results in:
<results>{ let $a:=doc("http://bstore1.example.com/bib.xml")/descendant-or-self::node()/child::author for $last in distinct-values($a/child::last), $first in distinct-values($a[(./child::last = $last)]/child::first) order by $last , $first return <result><author><last>{$last}</last><first>{$first}</first></author>{ for $b in doc("http://bstore1.example.com/bib.xml")/child::bib/child::book where (some $ba in $b/child::author satisfies (($ba/child::last = $last) and ($ba/child::first = $first))) return $b/child::title }</result> }</results>
Here is Q7 from the [XML Query Use Cases], use case XMP (Experiences and Exemplars): "List the titles and years of all books published by Addison-Wesley after 1991, in alphabetic order."
<bib> { for $b in doc("http://bstore1.example.com/bib.xml")//book where $b/publisher = "Addison-Wesley" and $b/@year > 1991 order by $b/title return <book> { $b/@year } { $b/title } </book> } </bib>
<?xml version="1.0"?> <xqx:module xmlns:xqx="http://www.w3.org/2005/XQueryX" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.w3.org/2005/XQueryX http://www.w3.org/2005/XQueryX/xqueryx.xsd"> <xqx:mainModule> <xqx:queryBody> <xqx:elementConstructor> <xqx:tagName>bib</xqx:tagName> <xqx:elementContent> <xqx:flworExpr> <xqx:forClause> <xqx:forClauseItem> <xqx:typedVariableBinding> <xqx:varName>b</xqx:varName> </xqx:typedVariableBinding> <xqx:forExpr> <xqx:pathExpr> <xqx:stepExpr> <xqx:filterExpr> <xqx:functionCallExpr> <xqx:functionName>doc</xqx:functionName> <xqx:arguments> <xqx:stringConstantExpr> <xqx:value>http://bstore1.example.com/bib.xml</xqx:value> </xqx:stringConstantExpr> </xqx:arguments> </xqx:functionCallExpr> </xqx:filterExpr> </xqx:stepExpr> <xqx:stepExpr> <xqx:xpathAxis>descendant-or-self</xqx:xpathAxis> <xqx:anyKindTest/> </xqx:stepExpr> <xqx:stepExpr> <xqx:xpathAxis>child</xqx:xpathAxis> <xqx:nameTest>book</xqx:nameTest> </xqx:stepExpr> </xqx:pathExpr> </xqx:forExpr> </xqx:forClauseItem> </xqx:forClause> <xqx:whereClause> <xqx:andOp> <xqx:firstOperand> <xqx:equalOp> <xqx:firstOperand> <xqx:pathExpr> <xqx:stepExpr> <xqx:filterExpr> <xqx:varRef> <xqx:name>b</xqx:name> </xqx:varRef> </xqx:filterExpr> </xqx:stepExpr> <xqx:stepExpr> <xqx:xpathAxis>child</xqx:xpathAxis> <xqx:nameTest>publisher</xqx:nameTest> </xqx:stepExpr> </xqx:pathExpr> </xqx:firstOperand> <xqx:secondOperand> <xqx:stringConstantExpr> <xqx:value>Addison-Wesley</xqx:value> </xqx:stringConstantExpr> </xqx:secondOperand> </xqx:equalOp> </xqx:firstOperand> <xqx:secondOperand> <xqx:greaterThanOp> <xqx:firstOperand> <xqx:pathExpr> <xqx:stepExpr> <xqx:filterExpr> <xqx:varRef> <xqx:name>b</xqx:name> </xqx:varRef> </xqx:filterExpr> </xqx:stepExpr> <xqx:stepExpr> <xqx:xpathAxis>attribute</xqx:xpathAxis> <xqx:nameTest>year</xqx:nameTest> </xqx:stepExpr> </xqx:pathExpr> </xqx:firstOperand> <xqx:secondOperand> <xqx:integerConstantExpr> <xqx:value>1991</xqx:value> </xqx:integerConstantExpr> </xqx:secondOperand> </xqx:greaterThanOp> </xqx:secondOperand> </xqx:andOp> </xqx:whereClause> <xqx:orderByClause> <xqx:orderBySpec> <xqx:orderByExpr> <xqx:pathExpr> <xqx:stepExpr> <xqx:filterExpr> <xqx:varRef> <xqx:name>b</xqx:name> </xqx:varRef> </xqx:filterExpr> </xqx:stepExpr> <xqx:stepExpr> <xqx:xpathAxis>child</xqx:xpathAxis> <xqx:nameTest>title</xqx:nameTest> </xqx:stepExpr> </xqx:pathExpr> </xqx:orderByExpr> </xqx:orderBySpec> </xqx:orderByClause> <xqx:returnClause> <xqx:elementConstructor> <xqx:tagName>book</xqx:tagName> <xqx:elementContent> <xqx:pathExpr> <xqx:stepExpr> <xqx:filterExpr> <xqx:varRef> <xqx:name>b</xqx:name> </xqx:varRef> </xqx:filterExpr> </xqx:stepExpr> <xqx:stepExpr> <xqx:xpathAxis>attribute</xqx:xpathAxis> <xqx:nameTest>year</xqx:nameTest> </xqx:stepExpr> </xqx:pathExpr> <xqx:pathExpr> <xqx:stepExpr> <xqx:filterExpr> <xqx:varRef> <xqx:name>b</xqx:name> </xqx:varRef> </xqx:filterExpr> </xqx:stepExpr> <xqx:stepExpr> <xqx:xpathAxis>child</xqx:xpathAxis> <xqx:nameTest>title</xqx:nameTest> </xqx:stepExpr> </xqx:pathExpr> </xqx:elementContent> </xqx:elementConstructor> </xqx:returnClause> </xqx:flworExpr> </xqx:elementContent> </xqx:elementConstructor> </xqx:queryBody> </xqx:mainModule> </xqx:module>
Application of the stylesheet in B Transforming XQueryX to XQuery to the XQueryX solution, we get:
<bib>{ for $b in doc("http://bstore1.example.com/bib.xml")/descendant-or-self::node()/child::book where (($b/child::publisher = "Addison-Wesley") and ($b/attribute::year > 1991)) order by $b/child::title return <book>{$b/attribute::year}{$b/child::title}</book> }</bib>
Here is Q8 from the [XML Query Use Cases], use case NS (Queries Using Namespaces): "Select all traders (either seller or high bidder) without negative comments."
declare namespace ma = "http://www.example.com/AuctionWatch"; <Q8 xmlns:ma="http://www.example.com/AuctionWatch" xmlns:eachbay="http://www.example.com/auctioneers#eachbay" xmlns:xlink="http://www.w3.org/1999/xlink"> { for $s in doc("auction.xml")//ma:Trading_Partners/(ma:Seller | ma:High_Bidder) where $s/*:NegativeComments = 0 return $s } </Q8>
<?xml version="1.0"?> <xqx:module xmlns:xqx="http://www.w3.org/2005/XQueryX" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.w3.org/2005/XQueryX http://www.w3.org/2005/XQueryX/xqueryx.xsd"> <xqx:mainModule> <xqx:prolog> <xqx:namespaceDecl> <xqx:prefix>ma</xqx:prefix> <xqx:uri>http://www.example.com/AuctionWatch</xqx:uri> </xqx:namespaceDecl> </xqx:prolog> <xqx:queryBody> <xqx:elementConstructor> <xqx:tagName>Q8</xqx:tagName> <xqx:attributeList> <xqx:namespaceDeclaration> <xqx:prefix>ma</xqx:prefix> <xqx:uri>http://www.example.com/AuctionWatch</xqx:uri> </xqx:namespaceDeclaration> <xqx:namespaceDeclaration> <xqx:prefix>eachbay</xqx:prefix> <xqx:uri>http://www.example.com/auctioneers#eachbay</xqx:uri> </xqx:namespaceDeclaration> <xqx:namespaceDeclaration> <xqx:prefix>xlink</xqx:prefix> <xqx:uri>http://www.w3.org/1999/xlink</xqx:uri> </xqx:namespaceDeclaration> </xqx:attributeList> <xqx:elementContent> <xqx:flworExpr> <xqx:forClause> <xqx:forClauseItem> <xqx:typedVariableBinding> <xqx:varName>s</xqx:varName> </xqx:typedVariableBinding> <xqx:forExpr> <xqx:pathExpr> <xqx:stepExpr> <xqx:filterExpr> <xqx:functionCallExpr> <xqx:functionName xqx:prefix="fn">doc</xqx:functionName> <xqx:arguments> <xqx:stringConstantExpr> <xqx:value>auction.xml</xqx:value> </xqx:stringConstantExpr> </xqx:arguments> </xqx:functionCallExpr> </xqx:filterExpr> </xqx:stepExpr> <xqx:stepExpr> <xqx:xpathAxis>descendant-or-self</xqx:xpathAxis> <xqx:anyKindTest/> </xqx:stepExpr> <xqx:stepExpr> <xqx:xpathAxis>child</xqx:xpathAxis> <xqx:nameTest xqx:prefix="ma">Trading_Partners</xqx:nameTest> </xqx:stepExpr> <xqx:stepExpr> <xqx:filterExpr> <xqx:parenthesizedExpr> <xqx:unionOp> <xqx:firstOperand> <xqx:pathExpr> <xqx:stepExpr> <xqx:xpathAxis>child</xqx:xpathAxis> <xqx:nameTest xqx:prefix="ma">Seller</xqx:nameTest> </xqx:stepExpr> </xqx:pathExpr> </xqx:firstOperand> <xqx:secondOperand> <xqx:pathExpr> <xqx:stepExpr> <xqx:xpathAxis>child</xqx:xpathAxis> <xqx:nameTest xqx:prefix="ma">High_Bidder</xqx:nameTest> </xqx:stepExpr> </xqx:pathExpr> </xqx:secondOperand> </xqx:unionOp> </xqx:parenthesizedExpr> </xqx:filterExpr> </xqx:stepExpr> </xqx:pathExpr> </xqx:forExpr> </xqx:forClauseItem> </xqx:forClause> <xqx:whereClause> <xqx:equalOp> <xqx:firstOperand> <xqx:pathExpr> <xqx:stepExpr> <xqx:filterExpr> <xqx:varRef> <xqx:name>s</xqx:name> </xqx:varRef> </xqx:filterExpr> </xqx:stepExpr> <xqx:stepExpr> <xqx:xpathAxis>child</xqx:xpathAxis> <xqx:Wildcard> <xqx:star/> <xqx:NCName>NegativeComments</xqx:NCName> </xqx:Wildcard> </xqx:stepExpr> </xqx:pathExpr> </xqx:firstOperand> <xqx:secondOperand> <xqx:integerConstantExpr> <xqx:value>0</xqx:value> </xqx:integerConstantExpr> </xqx:secondOperand> </xqx:equalOp> </xqx:whereClause> <xqx:returnClause> <xqx:varRef> <xqx:name>s</xqx:name> </xqx:varRef> </xqx:returnClause> </xqx:flworExpr> </xqx:elementContent> </xqx:elementConstructor> </xqx:queryBody> </xqx:mainModule> </xqx:module>
Application of the stylesheet in B Transforming XQueryX to XQuery to the XQueryX solution results in:
declare namespace ma="http://www.example.com/AuctionWatch"; <Q8 xmlns:ma="http://www.example.com/AuctionWatch" xmlns:eachbay="http://www.example.com/auctioneers#eachbay" xmlns:xlink="http://www.w3.org/1999/xlink">{ for $s in fn:doc("auction.xml")/descendant-or-self::node()/child::ma:Trading_Partners/((child::ma:Seller union child::ma:High_Bidder)) where ($s/child::*:NegativeComments = 0) return $s }</Q8>
Here is the XML Schema againstwhich XQueryX documentsmust be valid.
<?xml version="1.0"?> <!-- Changes from CR document: * revised the text describing the trivial embedding feature (bug #2611) * refined the content model for xqx:stepExpr and xqx:pathExpr (bug #2523) * fixed the handling of an empty xqx:Wildcard element (bug #3022) * removed the unnecessary <xqx:parenthesizedExpr/> element (#3333) * always generated braces associated with a computed PI constructor value (bug #3442) * escape/quote "<" and whitespace chars other than #x20 (bugs #3446 and #3474) * support schemaImport and moduleImport with multiple <xqx:targetLocation>s (bug #3520) * restructure prolog details in preparation for future XQuery features --> <!-- Readers of this schema are reminded that the default value for both minOccurs and maxOccurs is "1". --> <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://www.w3.org/2005/XQueryX" targetNamespace="http://www.w3.org/2005/XQueryX" elementFormDefault="qualified" attributeFormDefault="qualified"> <!-- A few helper declarations --> <xsd:complexType name="emptyContent"/> <xsd:element name="NCName" type="xsd:NCName"/> <xsd:complexType name="QName"> <xsd:simpleContent> <xsd:extension base="xsd:NCName"> <xsd:attribute name="prefix" type="xsd:NCName" use="optional"/> </xsd:extension> </xsd:simpleContent> </xsd:complexType> <!-- The base class --> <xsd:complexType name="expr"/> <xsd:element name="expr" type="expr" abstract="true"/> <!-- A list of expressions --> <xsd:complexType name="exprList"> <xsd:sequence> <xsd:element ref="expr" minOccurs="0" maxOccurs="unbounded"/> </xsd:sequence> </xsd:complexType> <xsd:complexType name="exprWrapperOptional"> <xsd:sequence> <xsd:element ref="expr" minOccurs="0"/> </xsd:sequence> </xsd:complexType> <!-- Simple wrapper class --> <xsd:complexType name="exprWrapper"> <xsd:sequence> <xsd:element ref="expr"/> </xsd:sequence> </xsd:complexType> <!-- constant expressions. We have 4 different subclasses for this --> <xsd:complexType name="constantExpr"> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:element name="value" type="xsd:anyType"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="constantExpr" type="constantExpr" abstract="true" substitutionGroup="expr"/> <xsd:complexType name="integerConstantExpr"> <xsd:complexContent> <xsd:restriction base="constantExpr"> <xsd:sequence> <xsd:element name="value" type="xsd:integer"/> </xsd:sequence> </xsd:restriction> </xsd:complexContent> </xsd:complexType> <xsd:element name="integerConstantExpr" type="integerConstantExpr" substitutionGroup="constantExpr"/> <xsd:complexType name="decimalConstantExpr"> <xsd:complexContent> <xsd:restriction base="constantExpr"> <xsd:sequence> <xsd:element name="value" type="xsd:decimal"/> </xsd:sequence> </xsd:restriction> </xsd:complexContent> </xsd:complexType> <xsd:element name="decimalConstantExpr" type="decimalConstantExpr" substitutionGroup="constantExpr"/> <xsd:complexType name="doubleConstantExpr"> <xsd:complexContent> <xsd:restriction base="constantExpr"> <xsd:sequence> <xsd:element name="value" type="xsd:double"/> </xsd:sequence> </xsd:restriction> </xsd:complexContent> </xsd:complexType> <xsd:element name="doubleConstantExpr" type="doubleConstantExpr" substitutionGroup="constantExpr"/> <xsd:complexType name="stringConstantExpr"> <xsd:complexContent> <xsd:restriction base="constantExpr"> <xsd:sequence> <xsd:element name="value" type="xsd:string"/> </xsd:sequence> </xsd:restriction> </xsd:complexContent> </xsd:complexType> <xsd:element name="stringConstantExpr" type="stringConstantExpr" substitutionGroup="constantExpr"/> <!-- Variables --> <xsd:complexType name="varRef"> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:element name="name" type="QName"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="varRef" type="varRef" substitutionGroup="expr"/> <!-- root and context-item expressions --> <!-- rootExpr deleted per Bugzilla Bug #2523 --> <xsd:complexType name="contextItemExpr"> <xsd:complexContent> <xsd:extension base="expr"/> </xsd:complexContent> </xsd:complexType> <xsd:element name="contextItemExpr" type="contextItemExpr" substitutionGroup="expr"/> <!-- Pragmas and extension expressions --> <xsd:element name="pragma"> <xsd:complexType> <xsd:sequence> <xsd:element name="pragmaName" type="QName"/> <xsd:element name="pragmaContents" type="xsd:string"/> </xsd:sequence> </xsd:complexType> </xsd:element> <xsd:complexType name="extensionExpr"> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:element ref="pragma" maxOccurs="unbounded"/> <xsd:element name="argExpr" type="exprWrapper" minOccurs="0"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="extensionExpr" type="extensionExpr" substitutionGroup="expr"/> <xsd:complexType name="functionCallExpr"> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:element name="functionName" type="QName"/> <xsd:element name="arguments" type="exprList" minOccurs="0"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="functionCallExpr" type="functionCallExpr" substitutionGroup="expr"/> <!-- Constructor functions --> <xsd:complexType name="constructorFunctionExpr"> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:element name="typeName" type="QName"/> <xsd:element name="argExpr" type="exprWrapper"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="constructorFunctionExpr" type="constructorFunctionExpr" substitutionGroup="expr"/> <xsd:complexType name="sequenceExpr"> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:element ref="expr" minOccurs="0" maxOccurs="unbounded"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="sequenceExpr" type="sequenceExpr" substitutionGroup="expr"/> <xsd:complexType name="rangeSequenceExpr"> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:element name="startExpr" type="exprWrapper"/> <xsd:element name="endExpr" type="exprWrapper"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="rangeSequenceExpr" type="rangeSequenceExpr" substitutionGroup="expr"/> <!-- Builtin operator expressions --> <xsd:complexType name="operatorExpr"> <xsd:complexContent> <xsd:extension base="expr"/> </xsd:complexContent> </xsd:complexType> <xsd:complexType name="unaryOperatorExpr"> <xsd:complexContent> <xsd:extension base="operatorExpr"> <xsd:sequence> <xsd:element name="operand" type="exprWrapper"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:complexType name="binaryOperatorExpr"> <xsd:complexContent> <xsd:extension base="operatorExpr"> <xsd:sequence> <xsd:element name="firstOperand" type="exprWrapper"/> <xsd:element name="secondOperand" type="exprWrapper"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="operatorExpr" type="operatorExpr" abstract="true" substitutionGroup="expr"/> <xsd:element name="arithmeticOp" type="operatorExpr" abstract="true" substitutionGroup="operatorExpr"/> <xsd:element name="addOp" type="binaryOperatorExpr" substitutionGroup="arithmeticOp"/> <xsd:element name="subtractOp" type="binaryOperatorExpr" substitutionGroup="arithmeticOp"/> <xsd:element name="multiplyOp" type="binaryOperatorExpr" substitutionGroup="arithmeticOp"/> <xsd:element name="divOp" type="binaryOperatorExpr" substitutionGroup="arithmeticOp"/> <xsd:element name="idivOp" type="binaryOperatorExpr" substitutionGroup="arithmeticOp"/> <xsd:element name="modOp" type="binaryOperatorExpr" substitutionGroup="arithmeticOp"/> <xsd:element name="unaryMinusOp" type="unaryOperatorExpr" substitutionGroup="arithmeticOp"/> <xsd:element name="unaryPlusOp" type="unaryOperatorExpr" substitutionGroup="arithmeticOp"/> <xsd:element name="comparisonOp" type="binaryOperatorExpr" abstract="true" substitutionGroup="operatorExpr"/> <xsd:element name="valueComparisonOp" type="binaryOperatorExpr" abstract="true" substitutionGroup="operatorExpr"/> <xsd:element name="eqOp" type="binaryOperatorExpr" substitutionGroup="valueComparisonOp"/> <xsd:element name="neOp" type="binaryOperatorExpr" substitutionGroup="valueComparisonOp"/> <xsd:element name="gtOp" type="binaryOperatorExpr" substitutionGroup="valueComparisonOp"/> <xsd:element name="geOp" type="binaryOperatorExpr" substitutionGroup="valueComparisonOp"/> <xsd:element name="ltOp" type="binaryOperatorExpr" substitutionGroup="valueComparisonOp"/> <xsd:element name="leOp" type="binaryOperatorExpr" substitutionGroup="valueComparisonOp"/> <xsd:element name="generalComparisonOp" type="binaryOperatorExpr" abstract="true" substitutionGroup="operatorExpr"/> <xsd:element name="equalOp" type="binaryOperatorExpr" substitutionGroup="generalComparisonOp"/> <xsd:element name="notEqualOp" type="binaryOperatorExpr" substitutionGroup="generalComparisonOp"/> <xsd:element name="lessThanOp" type="binaryOperatorExpr" substitutionGroup="generalComparisonOp"/> <xsd:element name="lessThanOrEqualOp" type="binaryOperatorExpr" substitutionGroup="generalComparisonOp"/> <xsd:element name="greaterThanOp" type="binaryOperatorExpr" substitutionGroup="generalComparisonOp"/> <xsd:element name="greaterThanOrEqualOp" type="binaryOperatorExpr" substitutionGroup="generalComparisonOp"/> <xsd:element name="nodeComparisonOp" type="binaryOperatorExpr" abstract="true" substitutionGroup="operatorExpr"/> <xsd:element name="isOp" type="binaryOperatorExpr" substitutionGroup="nodeComparisonOp"/> <xsd:element name="orderComparisonOp" type="binaryOperatorExpr" abstract="true" substitutionGroup="operatorExpr"/> <xsd:element name="nodeBeforeOp" type="binaryOperatorExpr" substitutionGroup="orderComparisonOp"/> <xsd:element name="nodeAfterOp" type="binaryOperatorExpr" substitutionGroup="orderComparisonOp"/> <xsd:element name="logicalOp" type="binaryOperatorExpr" abstract="true" substitutionGroup="operatorExpr"/> <xsd:element name="andOp" type="binaryOperatorExpr" substitutionGroup="logicalOp"/> <xsd:element name="orOp" type="binaryOperatorExpr" substitutionGroup="logicalOp"/> <xsd:element name="setOp" type="binaryOperatorExpr" abstract="true" substitutionGroup="operatorExpr"/> <xsd:element name="unionOp" type="binaryOperatorExpr" substitutionGroup="setOp"/> <xsd:element name="intersectOp" type="binaryOperatorExpr" substitutionGroup="setOp"/> <xsd:element name="exceptOp" type="binaryOperatorExpr" substitutionGroup="setOp"/> <!-- Basic typenames --> <xsd:element name="atomicType" type="QName" substitutionGroup="itemType"/> <!-- Used in castable expression --> <xsd:element name="singleType"> <xsd:complexType> <xsd:sequence> <xsd:element ref="atomicType"/> <xsd:element name="optional" type="emptyContent" minOccurs="0"/> </xsd:sequence> </xsd:complexType> </xsd:element> <xsd:element name="itemType" abstract="true"/> <xsd:complexType name="emptyItemTypeContent"/> <xsd:element name="anyItemType" type="emptyItemTypeContent" substitutionGroup="itemType"/> <xsd:simpleType name="occurrenceIndicator"> <xsd:restriction base="xsd:string"> <xsd:enumeration value="?"/> <xsd:enumeration value="*"/> <xsd:enumeration value="+"/> </xsd:restriction> </xsd:simpleType> <xsd:complexType name="sequenceType"> <xsd:choice> <xsd:element name="voidSequenceType" type="emptyContent"/> <xsd:sequence> <xsd:element ref="itemType"/> <xsd:element name="occurrenceIndicator" type="occurrenceIndicator" minOccurs="0"/> </xsd:sequence> </xsd:choice> </xsd:complexType> <xsd:element name="sequenceType" type="sequenceType"/> <xsd:element name="typeDeclaration" type="sequenceType"/> <!-- Represents a "typed" variable (for clause, let clause etc) --> <xsd:element name="typedVariableBinding"> <xsd:complexType> <xsd:sequence> <xsd:element name="varName" type="QName"/> <xsd:element ref="typeDeclaration" minOccurs="0"/> </xsd:sequence> </xsd:complexType> </xsd:element> <!-- Represents an untyped variable for the "at" clause in a for clause --> <xsd:element name="positionalVariableBinding" type="QName"/> <!-- substitutionGroup="FLWORVariableBindings"/> --> <xsd:element name="variableBinding" type="QName"/> <!-- Represents all variable bindings in a for or let clause except typed and positional variable bindings --> <xsd:element name="forLetClauseItemExtensions" abstract="true"/> <xsd:complexType name="forClauseItem"> <xsd:sequence> <xsd:element ref="typedVariableBinding"/> <xsd:element ref="positionalVariableBinding" minOccurs="0" maxOccurs="1"/> <xsd:element ref="forLetClauseItemExtensions" minOccurs="0" maxOccurs="unbounded"/> <xsd:element name="forExpr" type="exprWrapper"/> </xsd:sequence> </xsd:complexType> <xsd:element name="forClauseItem" type="forClauseItem"/> <xsd:element name="forClause"> <xsd:complexType> <xsd:sequence> <xsd:element ref="forClauseItem" minOccurs="1" maxOccurs="unbounded"/> </xsd:sequence> </xsd:complexType> </xsd:element> <xsd:element name="letClauseItem"> <xsd:complexType> <xsd:sequence> <xsd:choice> <xsd:sequence> <xsd:element ref="typedVariableBinding"/> <xsd:element ref="forLetClauseItemExtensions" minOccurs="0" maxOccurs="unbounded"/> </xsd:sequence> <xsd:element ref="forLetClauseItemExtensions" minOccurs="0" maxOccurs="unbounded"/> </xsd:choice> <xsd:element name="letExpr" type="exprWrapper"/> </xsd:sequence> </xsd:complexType> </xsd:element> <xsd:element name="letClause"> <xsd:complexType> <xsd:sequence> <xsd:element ref="letClauseItem" maxOccurs="unbounded"/> </xsd:sequence> </xsd:complexType> </xsd:element> <xsd:element name="whereClause" type="exprWrapper"/> <xsd:element name="returnClause" type="exprWrapper"/> <xsd:simpleType name="emptyOrderingMode"> <xsd:restriction base="xsd:string"> <xsd:enumeration value="empty greatest"/> <xsd:enumeration value="empty least"/> </xsd:restriction> </xsd:simpleType> <xsd:simpleType name="orderingKind"> <xsd:restriction base="xsd:string"> <xsd:enumeration value="ascending"/> <xsd:enumeration value="descending"/> </xsd:restriction> </xsd:simpleType> <xsd:element name="orderModifier"> <xsd:complexType> <xsd:sequence> <xsd:element name="orderingKind" type="orderingKind" minOccurs="0"/> <xsd:element name="emptyOrderingMode" type="emptyOrderingMode" minOccurs="0"/> <xsd:element name="collation" type="xsd:string" minOccurs="0"/> </xsd:sequence> </xsd:complexType> </xsd:element> <xsd:element name="orderBySpec"> <xsd:complexType> <xsd:sequence> <xsd:element name="orderByExpr" type="exprWrapper"/> <xsd:element ref="orderModifier" minOccurs="0"/> </xsd:sequence> </xsd:complexType> </xsd:element> <xsd:element name="orderByClause"> <xsd:complexType> <xsd:sequence> <xsd:element name="stable" type="emptyContent" minOccurs="0"/> <xsd:element ref="orderBySpec" maxOccurs="unbounded"/> </xsd:sequence> </xsd:complexType> </xsd:element> <!-- This is the flwor expression --> <xsd:complexType name="flworExpr"> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:choice maxOccurs="unbounded"> <xsd:element ref="forClause"/> <xsd:element ref="letClause"/> </xsd:choice> <xsd:element ref="whereClause" minOccurs="0"/> <xsd:element ref="orderByClause" minOccurs="0"/> <xsd:element ref="returnClause"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="flworExpr" type="flworExpr" substitutionGroup="expr"/> <!-- conditional expressions --> <xsd:complexType name="ifThenElseExpr"> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:element name="ifClause" type="exprWrapper"/> <xsd:element name="thenClause" type="exprWrapper"/> <xsd:element name="elseClause" type="exprWrapper"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="ifThenElseExpr" type="ifThenElseExpr" substitutionGroup="expr"/> <!-- The following clauses describe quantified expressions --> <xsd:simpleType name="quantifier"> <xsd:restriction base="xsd:NMTOKEN"> <xsd:enumeration value="some"/> <xsd:enumeration value="every"/> </xsd:restriction> </xsd:simpleType> <xsd:element name="quantifiedExprInClause"> <xsd:complexType> <xsd:sequence> <xsd:element ref="typedVariableBinding"/> <xsd:element name="sourceExpr" type="exprWrapper"/> </xsd:sequence> </xsd:complexType> </xsd:element> <xsd:complexType name="quantifiedExpr"> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:element name="quantifier" type="quantifier"/> <xsd:element ref="quantifiedExprInClause" maxOccurs="unbounded"/> <xsd:element name="predicateExpr" type="exprWrapper"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="quantifiedExpr" type="quantifiedExpr" substitutionGroup="expr"/> <!-- handle the typeswitch construct --> <!-- Note: no substitutionGroup as we cannot use this anywhere --> <xsd:element name="typeswitchExprCaseClause"> <xsd:complexType> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:element ref="variableBinding" minOccurs="0"/> <xsd:element ref="sequenceType"/> <xsd:element name="resultExpr" type="exprWrapper"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> </xsd:element> <!-- Note: no substitutionGroup as we cannot use this anywhere --> <xsd:element name="typeswitchExprDefaultClause"> <xsd:complexType> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:element ref="variableBinding" minOccurs="0"/> <xsd:element name="resultExpr" type="exprWrapper"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> </xsd:element> <xsd:complexType name="typeswitchExpr"> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:element name="argExpr" type="exprWrapper"/> <xsd:element ref="typeswitchExprCaseClause" maxOccurs="unbounded"/> <xsd:element ref="typeswitchExprDefaultClause"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="typeswitchExpr" type="typeswitchExpr" substitutionGroup="expr"/> <!-- instance-of expressions --> <xsd:complexType name="instanceOfExpr"> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:element name="argExpr" type="exprWrapper"/> <xsd:element ref="sequenceType"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="instanceOfExpr" type="instanceOfExpr" substitutionGroup="expr"/> <!-- treat-as expressions --> <xsd:complexType name="treatExpr"> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:element name="argExpr" type="exprWrapper"/> <xsd:element ref="sequenceType"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="treatExpr" type="treatExpr" substitutionGroup="expr"/> <!-- castable and cast expressions --> <xsd:complexType name="castableExpr"> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:element name="argExpr" type="exprWrapper"/> <xsd:element ref="singleType"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="castableExpr" type="castableExpr" substitutionGroup="expr"/> <xsd:complexType name="castExpr"> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:element name="argExpr" type="exprWrapper"/> <xsd:element ref="singleType"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="castExpr" type="castExpr" substitutionGroup="expr"/> <!-- Validate expressions --> <xsd:simpleType name="validationMode"> <xsd:restriction base="xsd:NMTOKEN"> <xsd:enumeration value="lax"/> <xsd:enumeration value="strict"/> </xsd:restriction> </xsd:simpleType> <xsd:complexType name="validateExpr"> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:element name="validationMode" type="validationMode" minOccurs="0"/> <xsd:element name="argExpr" type="exprWrapper"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="validateExpr" type="validateExpr" substitutionGroup="expr"/> <!-- Direct constructors. Only elementConstructor for now --> <!-- Note the absence of constructors corresponding to the directCommentConstructor and the directPIConstructor productions in the XQuery grammar. This is because they are trivially identical to the computed variants --> <!-- attributeConstructor is no longer a subclass of expr --> <xsd:complexType name="attributeConstructor"> <xsd:sequence> <xsd:element name="attributeName" type="QName"/> <xsd:choice> <xsd:element name="attributeValueExpr" type="exprList"/> <xsd:element name="attributeValue" type="xsd:string"/> </xsd:choice> </xsd:sequence> </xsd:complexType> <xsd:complexType name="namespaceDeclaration"> <xsd:sequence> <xsd:element name="prefix" type="xsd:NCName" minOccurs="0"/> <xsd:element name="uri" type="xsd:string"/> </xsd:sequence> </xsd:complexType> <xsd:element name="attributeList"> <xsd:complexType> <xsd:sequence> <xsd:choice maxOccurs="unbounded"> <xsd:element name="attributeConstructor" type="attributeConstructor"/> <xsd:element name="namespaceDeclaration" type="namespaceDeclaration"/> </xsd:choice> </xsd:sequence> </xsd:complexType> </xsd:element> <xsd:element name="elementContent" type="exprList"/> <xsd:complexType name="elementConstructor"> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:element name="tagName" type="QName"/> <xsd:element ref="attributeList" minOccurs="0"/> <xsd:element ref="elementContent" minOccurs="0"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="elementConstructor" type="elementConstructor" substitutionGroup="expr"/> <!-- computed constructors --> <xsd:complexType name="computedElementConstructor"> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:choice> <xsd:element name="tagName" type="QName"/> <xsd:element name="tagNameExpr" type="exprWrapper"/> </xsd:choice> <xsd:element name="contentExpr" type="exprWrapper" minOccurs="0"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="computedElementConstructor" type="computedElementConstructor" substitutionGroup="expr"/> <xsd:complexType name="computedAttributeConstructor"> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:choice> <xsd:element name="tagName" type="QName"/> <xsd:element name="tagNameExpr" type="exprWrapper"/> </xsd:choice> <xsd:element name="valueExpr" type="exprWrapper" minOccurs="0"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="computedAttributeConstructor" type="computedAttributeConstructor" substitutionGroup="expr"/> <xsd:complexType name="computedDocumentConstructor"> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:element name="argExpr" type="exprWrapper"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="computedDocumentConstructor" type="computedDocumentConstructor" substitutionGroup="expr"/> <xsd:complexType name="computedTextConstructor"> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:element name="argExpr" type="exprWrapper" minOccurs="0"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="computedTextConstructor" type="computedTextConstructor" substitutionGroup="expr"/> <xsd:complexType name="computedCommentConstructor"> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:element name="argExpr" type="exprWrapper"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="computedCommentConstructor" type="computedCommentConstructor" substitutionGroup="expr"/> <xsd:complexType name="computedPIConstructor"> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:choice> <xsd:element name="piTarget" type="xsd:NCName"/> <xsd:element name="piTargetExpr" type="exprWrapper"/> </xsd:choice> <xsd:element name="piValueExpr" type="exprWrapper" minOccurs="0"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="computedPIConstructor" type="computedPIConstructor" substitutionGroup="expr"/> <!-- ordered and unordered expressions --> <xsd:complexType name="unorderedExpr"> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:element name="argExpr" type="exprWrapper"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="unorderedExpr" type="unorderedExpr" substitutionGroup="expr"/> <xsd:complexType name="orderedExpr"> <xsd:complexContent> <xsd:extension base="expr"> <xsd:sequence> <xsd:element name="argExpr" type="exprWrapper"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="orderedExpr" type="orderedExpr" substitutionGroup="expr"/> <xsd:complexType name="simpleWildcard"> <xsd:choice> <xsd:element name="QName" type="QName"/> <xsd:element name="star" type="emptyContent"/> </xsd:choice> </xsd:complexType> <xsd:element name="Wildcard"> <xsd:complexType> <xsd:all> <xsd:element name="star" type="emptyContent" minOccurs="0"/> <xsd:element ref="NCName" minOccurs="0"/> </xsd:all> </xsd:complexType> </xsd:element> <xsd:element name="schemaAttributeTest" type="QName" substitutionGroup="kindTest"/> <xsd:element name="attributeTest" substitutionGroup="kindTest"> <xsd:complexType> <xsd:complexContent> <xsd:extension base="emptyItemTypeContent"> <xsd:sequence minOccurs="0"> <xsd:element name="attributeName" type="simpleWildcard"/> <xsd:element name="typeName" type="QName" minOccurs="0"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> </xsd:element> <xsd:element name="anyElementTest" abstract="true" substitutionGroup="kindTest"/> <xsd:element name="schemaElementTest" type="QName" substitutionGroup="anyElementTest"/> <xsd:element name="elementTest" substitutionGroup="anyElementTest"> <xsd:complexType> <xsd:complexContent> <xsd:extension base="emptyItemTypeContent"> <xsd:sequence minOccurs="0"> <xsd:element name="elementName" type="simpleWildcard"/> <xsd:sequence minOccurs="0"> <xsd:element name="typeName" type="QName"/> <xsd:element name="nillable" type="emptyContent" minOccurs="0"/> </xsd:sequence> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> </xsd:element> <xsd:element name="documentTest" substitutionGroup="kindTest"> <xsd:complexType> <xsd:complexContent> <xsd:extension base="emptyItemTypeContent"> <xsd:sequence> <xsd:element ref="anyElementTest" minOccurs="0"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> </xsd:element> <xsd:element name="piTest" substitutionGroup="kindTest"> <xsd:complexType> <xsd:complexContent> <xsd:extension base="emptyItemTypeContent"> <xsd:sequence> <xsd:element name="piTarget" type="xsd:NCName" minOccurs="0"/> </xsd:sequence> </xsd:extension> </xsd:complexContent> </xsd:complexType> </xsd:element> <xsd:element name="nameTest" type="QName"/> <xsd:element name="kindTest" substitutionGroup="itemType"/> <xsd:element name="textTest" type="emptyItemTypeContent" substitutionGroup="kindTest"/> <xsd:element name="commentTest" type="emptyItemTypeContent" substitutionGroup="kindTest"/> <xsd:element name="anyKindTest" type="emptyItemTypeContent" substitutionGroup="kindTest"/> <xsd:element name="xpathAxis"> <xsd:simpleType> <xsd:restriction base="xsd:NMTOKEN"> <xsd:enumeration value="child"/> <xsd:enumeration value="attribute"/> <xsd:enumeration value="self"/> <xsd:enumeration value="parent"/> <xsd:enumeration value="descendant-or-self"/> <xsd:enumeration value="descendant"/> <xsd:enumeration value="following"/> <xsd:enumeration value="following-sibling"/> <xsd:enumeration value="ancestor"/> <xsd:enumeration value="ancestor-or-self"/> <xsd:enumeration value="preceding"/> <xsd:enumeration value="preceding-sibling"/> </xsd:restriction> </xsd:simpleType> </xsd:element> <!-- xqx:parenthesizedExpr deemed not useful; removed. <xsd:element name="parenthesizedExpr" type="exprWrapperOptional"/> --> <xsd:group name="filterExpr"> <xsd:choice> <xsd:element ref="constantExpr"/> <xsd:element ref="varRef"/> <xsd:element ref="contextItemExpr"/> <xsd:element ref="functionCallExpr"/> <!-- xqx:parenthesizedExpr deemed not useful; replaced with xqx:sequenceExpr. --> <xsd:element ref="sequenceExpr"/> <xsd:element ref="elementConstructor"/> <xsd:element ref="computedElementConstructor"/> <xsd:element ref="computedAttributeConstructor"/> <xsd:element ref="computedDocumentConstructor"/> <xsd:element ref="computedTextConstructor"/> <xsd:element ref="computedCommentConstructor"/> <xsd:element ref="computedPIConstructor"/> <xsd:element ref="orderedExpr"/> <xsd:element ref="unorderedExpr"/> </xsd:choice> </xsd:group> <!-- removed nameTest and Wildcard outer choices per Bugzilla Bug #2523 --> <xsd:element name="stepExpr"> <xsd:complexType> <xsd:sequence> <xsd:choice> <xsd:sequence> <xsd:element ref="xpathAxis"/> <xsd:choice> <xsd:element ref="kindTest"/> <xsd:element ref="nameTest"/> <xsd:element ref="Wildcard"/> </xsd:choice> </xsd:sequence> <xsd:element name="filterExpr"> <xsd:complexType> <xsd:sequence> <xsd:group ref="filterExpr"/> </xsd:sequence> </xsd:complexType> </xsd:element> </xsd:choice> <xsd:element name="predicates" type="exprList" minOccurs="0"/> </xsd:sequence> </xsd:complexType> </xsd:element> <!-- rewrote pathExpr definition per Bugzilla Bug #2523 --> <xsd:complexType name="pathExpr"> <xsd:complexContent> <xsd:extension base="expr"> <xsd:choice> <xsd:sequence> <xsd:element name="rootExpr" type="emptyContent"/> <xsd:element ref="stepExpr" minOccurs="0" maxOccurs="unbounded"/> </xsd:sequence> <xsd:element ref="stepExpr" maxOccurs="unbounded"/> </xsd:choice> </xsd:extension> </xsd:complexContent> </xsd:complexType> <xsd:element name="pathExpr" type="pathExpr" substitutionGroup="expr"/> <!-- The following constructs deal with the query prolog --> <xsd:element name="module"> <xsd:complexType> <xsd:sequence> <xsd:element ref="versionDecl" minOccurs="0"/> <xsd:choice> <xsd:element ref="mainModule"/> <xsd:element ref="libraryModule"/> </xsd:choice> </xsd:sequence> </xsd:complexType> </xsd:element> <xsd:element name="mainModule"> <xsd:complexType> <xsd:sequence> <xsd:element ref="prolog" minOccurs="0"/> <xsd:element name="queryBody" type="exprWrapper"/> </xsd:sequence> </xsd:complexType> </xsd:element> <xsd:element name="libraryModule"> <xsd:complexType> <xsd:sequence> <xsd:element ref="moduleDecl"/> <xsd:element ref="prolog" minOccurs="0"/> </xsd:sequence> </xsd:complexType> </xsd:element> <xsd:element name="versionDecl"> <xsd:complexType> <xsd:sequence> <xsd:element name="version" type="xsd:string"/> </xsd:sequence> </xsd:complexType> </xsd:element> <xsd:element name="prolog"> <xsd:complexType> <xsd:sequence> <xsd:element ref="prologPartOneItem" minOccurs="0" maxOccurs="unbounded"/> <xsd:element ref="prologPartTwoItem" minOccurs="0" maxOccurs="unbounded"/> </xsd:sequence> </xsd:complexType> </xsd:element> <xsd:element name="prologPartOneItem" abstract="true"/> <xsd:element name="prologPartTwoItem" abstract="true"/> <xsd:element name="defaultCollationDecl" type="xsd:string" substitutionGroup="prologPartOneItem"/> <xsd:element name="baseUriDecl" type="xsd:string" substitutionGroup="prologPartOneItem"/> <xsd:element name="constructionDecl" substitutionGroup="prologPartOneItem"> <xsd:simpleType> <xsd:restriction base="xsd:NMTOKEN"> <xsd:enumeration value="strip"/> <xsd:enumeration value="preserve"/> </xsd:restriction> </xsd:simpleType> </xsd:element> <xsd:element name="orderingModeDecl" substitutionGroup="prologPartOneItem"> <xsd:simpleType> <xsd:restriction base="xsd:NMTOKEN"> <xsd:enumeration value="ordered"/> <xsd:enumeration value="unordered"/> </xsd:restriction> </xsd:simpleType> </xsd:element> <xsd:element name="emptyOrderingDecl" type="emptyOrderingMode" substitutionGroup="prologPartOneItem"/> <xsd:element name="copyNamespacesDecl" substitutionGroup="prologPartOneItem"> <xsd:complexType> <xsd:sequence> <xsd:element name="preserveMode"> <xsd:simpleType> <xsd:restriction base="xsd:NMTOKEN"> <xsd:enumeration value="preserve"/> <xsd:enumeration value="no-preserve"/> </xsd:restriction> </xsd:simpleType> </xsd:element> <xsd:element name="inheritMode"> <xsd:simpleType> <xsd:restriction base="xsd:NMTOKEN"> <xsd:enumeration value="inherit"/> <xsd:enumeration value="no-inherit"/> </xsd:restriction> </xsd:simpleType> </xsd:element> </xsd:sequence> </xsd:complexType> </xsd:element> <xsd:simpleType name="defaultNamespaceCategory"> <xsd:restriction base="xsd:NMTOKEN"> <xsd:enumeration value="function"/> <xsd:enumeration value="element"/> </xsd:restriction> </xsd:simpleType> <xsd:element name="defaultNamespaceDecl" substitutionGroup="prologPartOneItem"> <xsd:complexType> <xsd:sequence> <xsd:element name="defaultNamespaceCategory" type="defaultNamespaceCategory"/> <xsd:element name="uri" type="xsd:string"/> </xsd:sequence> </xsd:complexType> </xsd:element> <xsd:complexType name="namespaceDeclType"> <xsd:sequence> <xsd:element name="prefix" type="xsd:NCName"/> <xsd:element name="uri" type="xsd:string"/> </xsd:sequence> </xsd:complexType> <xsd:element name="namespaceDecl" type="namespaceDeclType" substitutionGroup="prologPartOneItem"/> <xsd:element name="moduleDecl" type="namespaceDeclType"/> <xsd:element name="schemaImport" substitutionGroup="prologPartOneItem"> <xsd:complexType> <xsd:sequence> <xsd:choice minOccurs="0"> <xsd:element name="namespacePrefix" type="xsd:NCName"/> <xsd:element name="defaultElementNamespace" type="emptyContent"/> </xsd:choice> <xsd:element name="targetNamespace" type="xsd:string"/> <xsd:element name="targetLocation" type="xsd:string" minOccurs="0" maxOccurs="unbounded"/> </xsd:sequence> </xsd:complexType> </xsd:element> <xsd:element name="moduleImport" substitutionGroup="prologPartOneItem"> <xsd:complexType> <xsd:sequence> <xsd:element name="namespacePrefix" type="xsd:NCName" minOccurs="0"/> <xsd:element name="targetNamespace" type="xsd:string"/> <xsd:element name="targetLocation" type="xsd:string" minOccurs="0" maxOccurs="unbounded"/> </xsd:sequence> </xsd:complexType> </xsd:element> <xsd:element name="varDecl" substitutionGroup="prologPartTwoItem"> <xsd:complexType> <xsd:sequence> <xsd:element name="varName" type="QName"/> <xsd:element ref="typeDeclaration" minOccurs="0"/> <xsd:choice> <xsd:element name="varValue" type="exprWrapper"/> <xsd:element name="external" type="emptyContent"/> </xsd:choice> </xsd:sequence> </xsd:complexType> </xsd:element> <xsd:element name="optionDecl" substitutionGroup="prologPartTwoItem"> <xsd:complexType> <xsd:sequence> <xsd:element name="optionName" type="QName"/> <xsd:element name="optionContents" type="xsd:string"/> </xsd:sequence> </xsd:complexType> </xsd:element> <xsd:element name="functionDecl" substitutionGroup="prologPartTwoItem"> <xsd:complexType> <xsd:sequence> <xsd:element name="functionName" type="QName"/> <xsd:element ref="paramList"/> <xsd:element ref="typeDeclaration" minOccurs="0"/> <xsd:choice> <xsd:element name="functionBody" type="exprWrapper"/> <xsd:element name="externalDefinition" type="emptyContent"/> </xsd:choice> </xsd:sequence> </xsd:complexType> </xsd:element> <xsd:element name="param"> <xsd:complexType> <xsd:sequence> <xsd:element name="varName" type="QName"/> <xsd:element ref="typeDeclaration" minOccurs="0"/> </xsd:sequence> </xsd:complexType> </xsd:element> <xsd:element name="paramList"> <xsd:complexType> <xsd:sequence> <xsd:element ref="param" minOccurs="0" maxOccurs="unbounded"/> </xsd:sequence> </xsd:complexType> </xsd:element> <!-- The element below handles the trivial XQuery embedding --> <xsd:element name="xquery" type="xsd:string"/> </xsd:schema>
This section defines the conformance criteria for an XQueryX processor (see Figure 1, "Processing Model Overview", in [XQuery 1.0: An XML Query Language], Section 2.2 Processing ModelXQ.
In this section, the following terms are used to indicate the requirement levels defined in [RFC 2119]. [Definition: MUST means that the item is an absolute requirement of the specification.] [Definition: SHOULD means that there may exist valid reasons in particular circumstances to ignore a particular item, but the full implications must be understood and carefully weighed before choosing a different course.] [Definition: MAY means that an item is truly optional.]
An XQueryX processor that claims to conform to this specification MUST implement the XQueryX syntax as defined in 4 An XML Schema for the XQuery XML Syntax of this specification and include a claim of Minimal Conformance as defined in [XQuery 1.0: An XML Query Language], Section 5.1 Minimal ConformanceXQ. In addition to a claim of Minimal Conformance, it MAY claim conformance to one or more optional features defined in [XQuery 1.0: An XML Query Language], Section 5.2 Optional FeaturesXQ.
The following stylesheet converts from XQueryX syntax to XML Query syntax. Note the intent of the stylesheet is to produce a valid XQuery with the same semantics (see [XQuery 1.0 Formal Semantics]) as the input XQueryX.
<?xml version="1.0"?> <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xqx="http://www.w3.org/2005/XQueryX"> <!-- Note that this stylesheet frequently invokes templates for specified elements, even when there are no templates in the stylesheet whose match="" attribute identifies those elements. In such case, the default template's element matching template is invoked, which merely invokes xsl:apply-templates --> <xsl:output method="text"/> <xsl:strip-space elements="*"/> <xsl:preserve-space elements="xqx:value xqx:attributeValue xqx:pragmaContents xqx:optionContents xqx:xquery"/> <xsl:variable name="DOT" select="'.'"/> <xsl:variable name="SPACE" select="' '"/> <xsl:variable name="SLASH" select="'/'"/> <xsl:variable name="SLASH_SLASH" select="'//'"/> <xsl:variable name="LESSTHAN" select="'<'"/> <xsl:variable name="GREATERTHAN" select="'>'"/> <xsl:variable name="LPAREN" select="'('"/> <xsl:variable name="RPAREN" select="')'"/> <xsl:variable name="NEWLINE"><xsl:text> </xsl:text></xsl:variable> <xsl:variable name="COMMA" select="','"/> <xsl:variable name="COMMA_SPACE" select="', '"/> <xsl:variable name="COMMA_NEWLINE"><xsl:text>, </xsl:text></xsl:variable> <xsl:variable name="QUOTE"><xsl:text>'</xsl:text></xsl:variable> <xsl:variable name="DOUBLEQUOTE"><xsl:text>"</xsl:text></xsl:variable> <xsl:variable name="TO" select="' to '"/> <xsl:variable name="LBRACE" select="'{'"/> <xsl:variable name="RBRACE" select="'}'"/> <xsl:variable name="LBRACKET" select="'['"/> <xsl:variable name="RBRACKET" select="']'"/> <xsl:variable name="DOLLAR" select="'$'"/> <xsl:variable name="MINUS" select="'-'"/> <xsl:variable name="PLUS" select="'+'"/> <xsl:variable name="EQUAL" select="'='"/> <xsl:variable name="COLON" select="':'"/> <xsl:variable name="DOUBLE_COLON" select="'::'"/> <xsl:variable name="SEMICOLON" select="';'"/> <xsl:variable name="AT" select="'@'"/> <xsl:variable name="STAR" select="'*'"/> <xsl:variable name="QUESTIONMARK" select="'?'"/> <xsl:variable name="ASSIGN" select="':='"/> <xsl:variable name="SEPARATOR" select="';'"/> <xsl:variable name="PRAGMA_BEGIN" select="'(# '"/> <xsl:variable name="PRAGMA_END" select="' #)'"/> <xsl:template name="delimitedList"> <xsl:param name="delimiter" /> <xsl:param name="leftEncloser"/> <xsl:param name="rightEncloser" /> <xsl:param name="selector"/> <xsl:value-of select="$leftEncloser"/> <xsl:for-each select="*"> <xsl:apply-templates select="."/> <xsl:if test="not (position()=last())"> <xsl:value-of select="$delimiter"/> </xsl:if> </xsl:for-each> <xsl:value-of select="$rightEncloser"/> </xsl:template> <xsl:template name="parenthesizedList"> <xsl:param name="delimiter" select="$COMMA_SPACE"/> <xsl:call-template name="delimitedList"> <xsl:with-param name="delimiter" select="$delimiter" /> <xsl:with-param name="leftEncloser" select="$LPAREN"/> <xsl:with-param name="rightEncloser" select="$RPAREN"/> </xsl:call-template> </xsl:template> <xsl:template name="commaSeparatedList"> <xsl:call-template name="delimitedList"> <xsl:with-param name="delimiter"> <xsl:value-of select="$COMMA_SPACE"/> </xsl:with-param> </xsl:call-template> </xsl:template> <!-- To resolve Bugzilla bug #3446, we now escape CR (#xD), NEL (#x85), and LINE SEPARATOR (#x2028) characters in text nodes and attribute values. Note that this template is invoked for a number of other purposes (e.g., xqx:collation, xqx:namespaceDeclaration) where the presence of such characters would be invalid and thus are highly unlikely to appear. If they do, then this template will happily escape them, deferring the error until the resulting XQuery expression is processed. --> <xsl:template name="quote"> <xsl:param name="item"/> <xsl:value-of select="$DOUBLEQUOTE"/> <xsl:call-template name="globalReplace"> <xsl:with-param name="stringToBeFixed"> <xsl:call-template name="globalReplace"> <xsl:with-param name="stringToBeFixed"> <xsl:call-template name="globalReplace"> <xsl:with-param name="stringToBeFixed"> <xsl:call-template name="globalReplace"> <xsl:with-param name="stringToBeFixed"> <xsl:call-template name="globalReplace"> <xsl:with-param name="stringToBeFixed"> <xsl:call-template name="globalReplace"> <xsl:with-param name="stringToBeFixed"> <xsl:value-of select="$item"/> </xsl:with-param> <xsl:with-param name="toBeReplaced">&</xsl:with-param> <xsl:with-param name="replacement">&amp;</xsl:with-param> </xsl:call-template> </xsl:with-param> <xsl:with-param name="toBeReplaced"><</xsl:with-param> <xsl:with-param name="replacement">&lt;</xsl:with-param> </xsl:call-template> </xsl:with-param> <xsl:with-param name="toBeReplaced" select="'…'"/> <xsl:with-param name="replacement">&#x85;</xsl:with-param> </xsl:call-template> </xsl:with-param> <xsl:with-param name="toBeReplaced" select="'
'"/> <xsl:with-param name="replacement">&#xD;</xsl:with-param> </xsl:call-template> </xsl:with-param> <xsl:with-param name="toBeReplaced" select="'
'"/> <xsl:with-param name="replacement">&#x2028;</xsl:with-param> </xsl:call-template> </xsl:with-param> <xsl:with-param name="toBeReplaced"><xsl:text>"</xsl:text></xsl:with-param> <xsl:with-param name="replacement"><xsl:text>""</xsl:text></xsl:with-param> </xsl:call-template> <xsl:value-of select="$DOUBLEQUOTE"/> </xsl:template> <xsl:template name="globalReplace"> <xsl:param name="stringToBeFixed"/> <xsl:param name="toBeReplaced"/> <xsl:param name="replacement"/> <xsl:choose> <xsl:when test="contains($stringToBeFixed, $toBeReplaced)"> <xsl:value-of select="concat(substring-before($stringToBeFixed, $toBeReplaced), $replacement)"/> <xsl:call-template name="globalReplace"> <xsl:with-param name="stringToBeFixed" select="substring-after($stringToBeFixed, $toBeReplaced)"/> <xsl:with-param name="toBeReplaced" select="$toBeReplaced"/> <xsl:with-param name="replacement" select="$replacement"/> </xsl:call-template> </xsl:when> <xsl:otherwise> <xsl:value-of select="$stringToBeFixed"/> </xsl:otherwise> </xsl:choose> </xsl:template> <xsl:template match="xqx:QName | xqx:pragmaName | xqx:typeName | xqx:varName | xqx:functionName | xqx:optionName | xqx:atomicType | xqx:tagName"> <xsl:if test="@xqx:prefix"> <xsl:value-of select="@xqx:prefix"/> <xsl:value-of select="$COLON"/> </xsl:if> <xsl:value-of select="."/> </xsl:template> <xsl:template match="xqx:attributeName"> <xsl:choose> <xsl:when test="@xqx:prefix='xmlns'"> <xsl:message terminate="yes">Incorrect XQueryX: Attribute names are not permitted to have prefix 'xmlns'; use xqx:namespaceDeclaration to declare namespaces</xsl:message> </xsl:when> <xsl:when test="@xqx:prefix"> <xsl:value-of select="@xqx:prefix"/> <xsl:value-of select="$COLON"/> <xsl:value-of select="."/> </xsl:when> <xsl:when test=". = 'xmlns'"> <xsl:message terminate="yes">Incorrect XQueryX: Attribute names are not permitted to be 'xmlns'; use xqx:namespaceDeclaration to declare namespaces</xsl:message> </xsl:when> <xsl:otherwise> <xsl:value-of select="."/> </xsl:otherwise> </xsl:choose> </xsl:template> <xsl:template match="xqx:NCName"> <xsl:value-of select="."/> </xsl:template> <xsl:template match="xqx:rootExpr"> <xsl:value-of select="$SLASH"/> </xsl:template> <xsl:template match="xqx:contextItemExpr"> <xsl:value-of select="$DOT"/> </xsl:template> <xsl:template match="xqx:stringConstantExpr"> <xsl:call-template name="quote"> <xsl:with-param name="item" select="xqx:value"/> </xsl:call-template> </xsl:template> <xsl:template match="xqx:integerConstantExpr | xqx:decimalConstantExpr | xqx:doubleConstantExpr"> <xsl:value-of select="xqx:value"/> </xsl:template> <xsl:template match="xqx:varRef"> <xsl:value-of select="$DOLLAR"/> <xsl:if test="xqx:name/@xqx:prefix"> <xsl:value-of select="xqx:name/@xqx:prefix"/> <xsl:value-of select="$COLON"/> </xsl:if> <xsl:value-of select="xqx:name"/> </xsl:template> <xsl:template match="xqx:pragma"> <xsl:value-of select="$PRAGMA_BEGIN"/> <xsl:apply-templates select="xqx:pragmaName"/> <xsl:value-of select="$SPACE"/> <xsl:value-of select="xqx:pragmaContents"/> <xsl:value-of select="$PRAGMA_END"/> </xsl:template> <xsl:template match="xqx:extensionExpr"> <xsl:apply-templates select="xqx:pragma"/> <xsl:value-of select="$LBRACE"/> <xsl:apply-templates select="xqx:argExpr"/> <xsl:value-of select="$RBRACE"/> </xsl:template> <!-- Response to Bugzilla bug #2528 --> <xsl:template match="xqx:functionCallExpr"> <xsl:choose> <xsl:when test="xqx:functionName/@xqx:prefix"> <xsl:value-of select="xqx:functionName/@xqx:prefix"/> <xsl:value-of select="$COLON"/> </xsl:when> <xsl:otherwise> <xsl:if test="xqx:functionName = 'node' or xqx:functionName = 'document-node' or xqx:functionName = 'element' or xqx:functionName = 'attribute' or xqx:functionName = 'schema-element' or xqx:functionName = 'schema-attribute' or xqx:functionName = 'processing-instruction' or xqx:functionName = 'comment' or xqx:functionName = 'text' or xqx:functionName = 'item' or xqx:functionName = 'if' or xqx:functionName = 'typeswitch' or xqx:functionName = 'empty-sequence'"> <xsl:variable name="message"><xsl:text>Incorrect XQueryX: function calls must not use unqualified "reserved" name "</xsl:text><xsl:value-of select="xqx:functionName"/><xsl:text>"</xsl:text></xsl:variable> <xsl:message terminate="yes"><xsl:value-of select="$message"/></xsl:message> </xsl:if> </xsl:otherwise> </xsl:choose> <xsl:value-of select="xqx:functionName"/> <xsl:choose> <xsl:when test="xqx:arguments"> <xsl:for-each select="xqx:arguments"> <xsl:call-template name="parenthesizedList"/> </xsl:for-each> </xsl:when> <xsl:otherwise> <xsl:value-of select="$LPAREN"/> <xsl:value-of select="$RPAREN"/> </xsl:otherwise> </xsl:choose> </xsl:template> <xsl:template match="xqx:constructorFunctionExpr"> <xsl:apply-templates select="xqx:typeName"/> <xsl:for-each select="xqx:argExpr"> <xsl:call-template name="parenthesizedList"/> </xsl:for-each> </xsl:template> <xsl:template match="xqx:unaryMinusOp | xqx:unaryPlusOp"> <xsl:value-of select="$LPAREN"/> <xsl:choose> <xsl:when test="self::xqx:unaryPlusOp"><xsl:value-of select="$PLUS"/></xsl:when> <xsl:when test="self::xqx:unaryMinusOp"><xsl:value-of select="$MINUS"/></xsl:when> </xsl:choose> <xsl:apply-templates select="xqx:operand"/> <xsl:value-of select="$RPAREN"/> </xsl:template> <xsl:template match="xqx:addOp | xqx:subtractOp | xqx:multiplyOp | xqx:divOp | xqx:idivOp | xqx:modOp"> <xsl:value-of select="$LPAREN"/> <xsl:apply-templates select="xqx:firstOperand"/> <xsl:choose> <xsl:when test="self::xqx:addOp"><xsl:value-of select="$PLUS"/></xsl:when> <xsl:when test="self::xqx:subtractOp"><xsl:text> </xsl:text><xsl:value-of select="$MINUS"/><xsl:text> </xsl:text></xsl:when> <xsl:when test="self::xqx:multiplyOp"><xsl:value-of select="$STAR"/></xsl:when> <xsl:when test="self::xqx:divOp"><xsl:text> div </xsl:text></xsl:when> <xsl:when test="self::xqx:idivOp"><xsl:text> idiv </xsl:text></xsl:when> <xsl:when test="self::xqx:modOp"><xsl:text> mod </xsl:text></xsl:when> </xsl:choose> <xsl:apply-templates select="xqx:secondOperand"/> <xsl:value-of select="$RPAREN"/> </xsl:template> <xsl:template match="xqx:eqOp | xqx:neOp | xqx:ltOp | xqx:gtOp | xqx:leOp | xqx:geOp"> <xsl:value-of select="$LPAREN"/> <xsl:apply-templates select="xqx:firstOperand"/> <xsl:choose> <xsl:when test="self::xqx:eqOp"><xsl:text> eq </xsl:text></xsl:when> <xsl:when test="self::xqx:neOp"><xsl:text> ne </xsl:text></xsl:when> <xsl:when test="self::xqx:ltOp"><xsl:text> lt </xsl:text></xsl:when> <xsl:when test="self::xqx:gtOp"><xsl:text> gt </xsl:text></xsl:when> <xsl:when test="self::xqx:leOp"><xsl:text> le </xsl:text></xsl:when> <xsl:when test="self::xqx:geOp"><xsl:text> ge </xsl:text></xsl:when> </xsl:choose> <xsl:apply-templates select="xqx:secondOperand"/> <xsl:value-of select="$RPAREN"/> </xsl:template> <xsl:template match="xqx:equalOp | xqx:notEqualOp | xqx:lessThanOp | xqx:greaterThanOp | xqx:lessThanOrEqualOp | xqx:greaterThanOrEqualOp"> <xsl:value-of select="$LPAREN"/> <xsl:apply-templates select="xqx:firstOperand"/> <xsl:choose> <xsl:when test="self::xqx:equalOp"> <xsl:text> </xsl:text><xsl:value-of select="$EQUAL"/><xsl:text> </xsl:text> </xsl:when> <xsl:when test="self::xqx:notEqualOp"> <xsl:text> !</xsl:text><xsl:value-of select="$EQUAL"/><xsl:text> </xsl:text> </xsl:when> <xsl:when test="self::xqx:lessThanOp"> <xsl:text> </xsl:text><xsl:value-of select="$LESSTHAN"/><xsl:text> </xsl:text> </xsl:when> <xsl:when test="self::xqx:greaterThanOp"> <xsl:text> </xsl:text><xsl:value-of select="$GREATERTHAN"/><xsl:text> </xsl:text> </xsl:when> <xsl:when test="self::xqx:lessThanOrEqualOp"> <xsl:text> </xsl:text><xsl:value-of select="$LESSTHAN"/> <xsl:value-of select="$EQUAL"/><xsl:text> </xsl:text> </xsl:when> <xsl:when test="self::xqx:greaterThanOrEqualOp"> <xsl:text> </xsl:text><xsl:value-of select="$GREATERTHAN"/> <xsl:value-of select="$EQUAL"/><xsl:text> </xsl:text> </xsl:when> </xsl:choose> <xsl:apply-templates select="xqx:secondOperand"/> <xsl:value-of select="$RPAREN"/> </xsl:template> <xsl:template match="xqx:isOp | xqx:nodeBeforeOp | xqx:nodeAfterOp"> <xsl:value-of select="$LPAREN"/> <xsl:apply-templates select="xqx:firstOperand"/> <xsl:choose> <xsl:when test="self::xqx:isOp"><xsl:text> is </xsl:text></xsl:when> <xsl:when test="self::xqx:nodeBeforeOp"><xsl:text> </xsl:text> <xsl:value-of select="$LESSTHAN"/><xsl:value-of select="$LESSTHAN"/> <xsl:text> </xsl:text></xsl:when> <xsl:when test="self::xqx:nodeAfterOp"><xsl:text> </xsl:text> <xsl:value-of select="$GREATERTHAN"/><xsl:value-of select="$GREATERTHAN"/> <xsl:text> </xsl:text></xsl:when> </xsl:choose> <xsl:apply-templates select="xqx:secondOperand"/> <xsl:value-of select="$RPAREN"/> </xsl:template> <xsl:template match="xqx:andOp | xqx:orOp"> <xsl:value-of select="$LPAREN"/> <xsl:apply-templates select="xqx:firstOperand"/> <xsl:choose> <xsl:when test="self::xqx:andOp"><xsl:text> and </xsl:text></xsl:when> <xsl:when test="self::xqx:orOp"><xsl:text> or </xsl:text></xsl:when> </xsl:choose> <xsl:apply-templates select="xqx:secondOperand"/> <xsl:value-of select="$RPAREN"/> </xsl:template> <xsl:template match="xqx:unionOp | xqx:intersectOp | xqx:exceptOp"> <xsl:value-of select="$LPAREN"/> <xsl:apply-templates select="xqx:firstOperand"/> <xsl:choose> <xsl:when test="self::xqx:unionOp"><xsl:text> union </xsl:text></xsl:when> <xsl:when test="self::xqx:intersectOp"><xsl:text> intersect </xsl:text></xsl:when> <xsl:when test="self::xqx:exceptOp"><xsl:text> except </xsl:text></xsl:when> </xsl:choose> <xsl:apply-templates select="xqx:secondOperand"/> <xsl:value-of select="$RPAREN"/> </xsl:template> <xsl:template match="xqx:sequenceExpr"> <xsl:for-each select="."> <xsl:call-template name="parenthesizedList"> <xsl:with-param name="delimiter" select="$COMMA_NEWLINE"/> </xsl:call-template> </xsl:for-each> </xsl:template> <xsl:template match="xqx:rangeSequenceExpr"> <xsl:value-of select="$LPAREN"/> <xsl:apply-templates select="xqx:startExpr"/> <xsl:value-of select="$TO"/> <xsl:apply-templates select="xqx:endExpr"/> <xsl:value-of select="$RPAREN"/> </xsl:template> <xsl:template match="xqx:forClause"> <xsl:text> for </xsl:text> <xsl:call-template name="commaSeparatedList"/> <xsl:value-of select="$NEWLINE"/> </xsl:template> <xsl:template match="xqx:forClauseItem"> <xsl:apply-templates/> </xsl:template> <xsl:template match="xqx:forExpr"> <xsl:value-of select="$NEWLINE"/> <xsl:text> in </xsl:text> <xsl:apply-templates/> </xsl:template> <xsl:template match="xqx:letClause"> <xsl:text> let </xsl:text> <xsl:call-template name="commaSeparatedList"/> <xsl:value-of select="$NEWLINE"/> </xsl:template> <xsl:template match="xqx:letClauseItem"> <xsl:apply-templates/> </xsl:template> <xsl:template match="xqx:letExpr"> <xsl:value-of select="$ASSIGN"/> <xsl:apply-templates/> </xsl:template> <xsl:template match="xqx:returnClause"> <xsl:text> return </xsl:text> <xsl:apply-templates select="*"/> <xsl:value-of select="$NEWLINE"/> </xsl:template> <xsl:template match="xqx:whereClause"> <xsl:text> where </xsl:text> <xsl:apply-templates select="*"/> <xsl:value-of select="$NEWLINE"/> </xsl:template> <xsl:template match="xqx:collation"> <xsl:text> collation </xsl:text> <xsl:call-template name="quote"> <xsl:with-param name="item"> <xsl:value-of select="."/> </xsl:with-param> </xsl:call-template> </xsl:template> <xsl:template match="xqx:emptyOrderingMode"> <xsl:value-of select="$SPACE"/> <xsl:value-of select="."/> </xsl:template> <xsl:template match="xqx:orderingKind"> <xsl:value-of select="$SPACE"/> <xsl:value-of select="."/> </xsl:template> <xsl:template match="xqx:orderModifier"> <xsl:apply-templates select="*"/> </xsl:template> <xsl:template match="xqx:orderBySpec"> <xsl:apply-templates select="xqx:orderByExpr"/> <xsl:value-of select="$SPACE"/> <xsl:apply-templates select="xqx:orderModifier"/> </xsl:template> <xsl:template match="xqx:orderByClause"> <xsl:if test="xqx:stable"> <xsl:text> stable</xsl:text> </xsl:if> <xsl:text> order by </xsl:text> <xsl:apply-templates select="xqx:orderBySpec[1]"/> <xsl:for-each select="xqx:orderBySpec[position() > 1]"> <xsl:value-of select="$COMMA_SPACE"/> <xsl:apply-templates select="."/> </xsl:for-each> <xsl:value-of select="$NEWLINE"/> </xsl:template> <!-- Surrounding FLWOR expressions with parentheses completes the set --> <xsl:template match="xqx:flworExpr"> <xsl:value-of select="$NEWLINE"/> <xsl:value-of select="$LPAREN"/> <xsl:apply-templates select="*"/> <xsl:value-of select="$RPAREN"/> </xsl:template> <xsl:template match="xqx:ifThenElseExpr"> <xsl:value-of select="$LPAREN"/> <xsl:text> if </xsl:text> <xsl:value-of select="$LPAREN"/> <xsl:apply-templates select="xqx:ifClause"/> <xsl:value-of select="$RPAREN"/> <xsl:text> then </xsl:text> <xsl:apply-templates select="xqx:thenClause"/> <xsl:text> else </xsl:text> <xsl:apply-templates select="xqx:elseClause"/> <xsl:value-of select="$RPAREN"/> </xsl:template> <xsl:template match="xqx:positionalVariableBinding"> <xsl:text> at </xsl:text> <xsl:value-of select="$DOLLAR"/> <xsl:if test="@xqx:prefix"> <xsl:value-of select="@xqx:prefix"/> <xsl:value-of select="$COLON"/> </xsl:if> <xsl:value-of select="."/> </xsl:template> <xsl:template match="xqx:variableBinding"> <xsl:value-of select="$DOLLAR"/> <xsl:if test="@xqx:prefix"> <xsl:value-of select="@xqx:prefix"/> <xsl:value-of select="$COLON"/> </xsl:if> <xsl:value-of select="."/> <xsl:if test="parent::xqx:typeswitchExprCaseClause"> <xsl:text> as </xsl:text> </xsl:if> </xsl:template> <xsl:template match="xqx:typedVariableBinding" name="typedVariableBinding"> <xsl:value-of select="$DOLLAR"/> <xsl:apply-templates select="xqx:varName"/> <xsl:apply-templates select="xqx:typeDeclaration"/> </xsl:template> <xsl:template match="xqx:quantifiedExprInClause"> <xsl:apply-templates select="xqx:typedVariableBinding"/> <xsl:text> in </xsl:text> <xsl:apply-templates select="xqx:sourceExpr"/> </xsl:template> <xsl:template match="xqx:quantifiedExpr"> <xsl:value-of select="$LPAREN"/> <xsl:value-of select="xqx:quantifier"/> <xsl:value-of select="$SPACE"/> <xsl:apply-templates select="xqx:quantifiedExprInClause[1]"/> <xsl:for-each select="xqx:quantifiedExprInClause[position() > 1]"> <xsl:value-of select="$COMMA_SPACE"/> <xsl:apply-templates select="."/> </xsl:for-each> <xsl:text> satisfies </xsl:text> <xsl:apply-templates select="xqx:predicateExpr"/> <xsl:value-of select="$RPAREN"/> </xsl:template> <xsl:template match="xqx:instanceOfExpr"> <xsl:value-of select="$LPAREN"/> <xsl:apply-templates select="xqx:argExpr"/> <xsl:text> instance of </xsl:text> <xsl:apply-templates select="xqx:sequenceType"/> <xsl:value-of select="$RPAREN"/> </xsl:template> <xsl:template match="xqx:castExpr"> <xsl:value-of select="$LPAREN"/> <xsl:apply-templates select="xqx:argExpr"/> <xsl:text> cast as </xsl:text> <xsl:apply-templates select="xqx:singleType"/> <xsl:value-of select="$RPAREN"/> </xsl:template> <xsl:template match="xqx:castableExpr"> <xsl:value-of select="$LPAREN"/> <xsl:apply-templates select="xqx:argExpr"/> <xsl:text> castable as </xsl:text> <xsl:apply-templates select="xqx:singleType"/> <xsl:value-of select="$RPAREN"/> </xsl:template> <xsl:template match="xqx:treatExpr"> <xsl:value-of select="$LPAREN"/> <xsl:apply-templates select="xqx:argExpr"/> <xsl:text> treat as </xsl:text> <xsl:apply-templates select="xqx:sequenceType"/> <xsl:value-of select="$RPAREN"/> </xsl:template> <xsl:template match="xqx:typeswitchExprCaseClause"> <xsl:text> case </xsl:text> <xsl:apply-templates select="xqx:variableBinding"/> <xsl:apply-templates select="xqx:sequenceType"/> <xsl:text> return </xsl:text> <xsl:apply-templates select="xqx:resultExpr"/> </xsl:template> <xsl:template match="xqx:typeswitchExprDefaultClause"> <xsl:text> default </xsl:text> <xsl:apply-templates select="xqx:variableBinding"/> <xsl:text> return </xsl:text> <xsl:apply-templates select="xqx:resultExpr"/> </xsl:template> <xsl:template match="xqx:typeswitchExpr"> <xsl:value-of select="$LPAREN"/> <xsl:text>typeswitch</xsl:text> <xsl:value-of select="$LPAREN"/> <xsl:apply-templates select="xqx:argExpr"/> <xsl:value-of select="$RPAREN"/> <xsl:apply-templates select="xqx:typeswitchExprCaseClause"/> <xsl:apply-templates select="xqx:typeswitchExprDefaultClause"/> <xsl:value-of select="$RPAREN"/> </xsl:template> <xsl:template match="xqx:validateExpr"> <xsl:value-of select="$LPAREN"/> <xsl:text> validate </xsl:text> <xsl:value-of select="xqx:validationMode"/> <xsl:value-of select="$LBRACE"/> <xsl:apply-templates select="xqx:argExpr"/> <xsl:value-of select="$RBRACE"/> <xsl:value-of select="$RPAREN"/> </xsl:template> <xsl:template match="xqx:xpathAxis"> <xsl:value-of select="."/> <xsl:value-of select="$DOUBLE_COLON"/> </xsl:template> <xsl:template match="xqx:predicates"> <xsl:for-each select="*"> <xsl:value-of select="$LBRACKET"/> <xsl:apply-templates select="."/> <xsl:value-of select="$RBRACKET"/> </xsl:for-each> </xsl:template> <xsl:template match="xqx:star"> <xsl:value-of select="$STAR"/> </xsl:template> <xsl:template match="xqx:Wildcard[*]"> <xsl:apply-templates select="*[1]"/> <xsl:if test="*[2]"> <xsl:value-of select="$COLON"/> <xsl:apply-templates select="*[2]"/> </xsl:if> </xsl:template> <xsl:template match="xqx:Wildcard[not(*)]"> <xsl:value-of select="$STAR"/> </xsl:template> <xsl:template name="simpleWildcard" match="xqx:simpleWildcard"> <xsl:apply-templates select="xqx:star"/> <xsl:apply-templates select="xqx:QName"/> </xsl:template> <xsl:template match="xqx:textTest"> <xsl:text>text()</xsl:text> </xsl:template> <xsl:template match="xqx:commentTest"> <xsl:text>comment()</xsl:text> </xsl:template> <xsl:template match="xqx:anyKindTest"> <xsl:text>node()</xsl:text> </xsl:template> <xsl:template match="xqx:piTest"> <xsl:text>processing-instruction</xsl:text> <xsl:value-of select="$LPAREN"/> <xsl:value-of select="*"/> <xsl:value-of select="$RPAREN"/> </xsl:template> <xsl:template match="xqx:documentTest"> <xsl:text>document-node</xsl:text> <xsl:value-of select="$LPAREN"/> <xsl:apply-templates select="*"/> <xsl:value-of select="$RPAREN"/> </xsl:template> <xsl:template match="xqx:nameTest"> <xsl:if test="@xqx:prefix"> <xsl:value-of select="@xqx:prefix"/> <xsl:value-of select="$COLON"/> </xsl:if> <xsl:value-of select="."/> </xsl:template> <xsl:template match="xqx:attributeTest"> <xsl:text>attribute</xsl:text> <xsl:value-of select="$LPAREN"/> <xsl:for-each select="xqx:attributeName"> <xsl:call-template name="simpleWildcard"/> </xsl:for-each> <xsl:if test="xqx:typeName"> <xsl:value-of select="$COMMA"/> <xsl:apply-templates select="xqx:typeName"/> </xsl:if> <xsl:value-of select="$RPAREN"/> </xsl:template> <xsl:template match="xqx:elementTest"> <xsl:text>element</xsl:text> <xsl:value-of select="$LPAREN"/> <xsl:for-each select="xqx:elementName"> <xsl:call-template name="simpleWildcard"/> </xsl:for-each> <xsl:if test="xqx:typeName"> <xsl:value-of select="$COMMA"/> <xsl:apply-templates select="xqx:typeName"/> </xsl:if> <xsl:if test="xqx:nillable"> <xsl:value-of select="$QUESTIONMARK"/> </xsl:if> <xsl:value-of select="$RPAREN"/> </xsl:template> <xsl:template match="xqx:schemaElementTest"> <xsl:text>schema-element</xsl:text> <xsl:value-of select="$LPAREN"/> <xsl:if test="@xqx:prefix"> <xsl:value-of select="@xqx:prefix"/> <xsl:value-of select="$COLON"/> </xsl:if> <xsl:value-of select="."/> <xsl:value-of select="$RPAREN"/> </xsl:template> <xsl:template match="xqx:schemaAttributeTest"> <xsl:text>schema-attribute</xsl:text> <xsl:value-of select="$LPAREN"/> <xsl:if test="@xqx:prefix"> <xsl:value-of select="@xqx:prefix"/> <xsl:value-of select="$COLON"/> </xsl:if> <xsl:value-of select="."/> <xsl:value-of select="$RPAREN"/> </xsl:template> <!-- rewrote test expression per Bugzilla Bug #2523 --> <xsl:template match="xqx:stepExpr"> <xsl:if test="preceding-sibling::xqx:stepExpr"> <xsl:value-of select="$SLASH"/> </xsl:if> <xsl:apply-templates select="*"/> </xsl:template> <xsl:template match="xqx:parenthesizedExpr"> <xsl:value-of select="$LPAREN"/><xsl:apply-templates/><xsl:value-of select="$RPAREN"/> </xsl:template> <xsl:template match="xqx:filterExpr"> <xsl:apply-templates/> </xsl:template> <!-- rewrote pathExpr template per Bugzilla Bug #2523 --> <xsl:template match="xqx:pathExpr"> <xsl:apply-templates select="xqx:rootExpr | xqx:stepExpr"/> </xsl:template> <!-- To resolve Bugzilla bug #3446, we now escape NL (#xA) and TAB (#x9) characters in attribute values --> <xsl:template match="xqx:attributeConstructor"> <xsl:value-of select="$SPACE"/> <xsl:apply-templates select="xqx:attributeName"/> <xsl:value-of select="$EQUAL"/> <xsl:choose> <xsl:when test="xqx:attributeValue"> <xsl:call-template name="globalReplace"> <xsl:with-param name="stringToBeFixed"> <xsl:call-template name="globalReplace"> <xsl:with-param name="stringToBeFixed"> <xsl:call-template name="quote"> <xsl:with-param name="item"> <xsl:call-template name="globalReplace"> <xsl:with-param name="stringToBeFixed"> <xsl:call-template name="globalReplace"> <xsl:with-param name="stringToBeFixed"> <xsl:value-of select="xqx:attributeValue"/> </xsl:with-param> <xsl:with-param name="toBeReplaced"><xsl:text>{</xsl:text></xsl:with-param> <xsl:with-param name="replacement"><xsl:text>{{</xsl:text></xsl:with-param> </xsl:call-template> </xsl:with-param> <xsl:with-param name="toBeReplaced"><xsl:text>}</xsl:text></xsl:with-param> <xsl:with-param name="replacement"><xsl:text>}}</xsl:text></xsl:with-param> </xsl:call-template> </xsl:with-param> </xsl:call-template> </xsl:with-param> <xsl:with-param name="toBeReplaced" select="'
'"/> <xsl:with-param name="replacement">&#xA;</xsl:with-param> </xsl:call-template> </xsl:with-param> <xsl:with-param name="toBeReplaced" select="'	'"/> <xsl:with-param name="replacement">&#x9;</xsl:with-param> </xsl:call-template> </xsl:when> <xsl:otherwise> <xsl:value-of select="$DOUBLEQUOTE"/> <xsl:for-each select="./xqx:attributeValueExpr/xqx:*"> <xsl:value-of select="$LBRACE"/> <xsl:apply-templates select="."/> <xsl:value-of select="$RBRACE"/> </xsl:for-each> <xsl:value-of select="$DOUBLEQUOTE"/> </xsl:otherwise> </xsl:choose> </xsl:template> <xsl:template match="xqx:namespaceDeclaration"> <xsl:text> xmlns</xsl:text> <xsl:if test="xqx:prefix"> <xsl:text>:</xsl:text> <xsl:value-of select="xqx:prefix"/> </xsl:if> <xsl:value-of select="$EQUAL"/> <xsl:call-template name="quote"> <xsl:with-param name="item" select="xqx:uri"/> </xsl:call-template> </xsl:template> <xsl:template match="xqx:attributeList"> <xsl:apply-templates select="*"/> </xsl:template> <xsl:template match="xqx:elementContent"> <xsl:for-each select="*"> <xsl:if test="not(self::xqx:elementConstructor)"> <xsl:value-of select="$LBRACE"/> </xsl:if> <xsl:apply-templates select="."/> <xsl:if test="not(self::xqx:elementConstructor)"> <xsl:value-of select="$RBRACE"/> </xsl:if> </xsl:for-each> </xsl:template> <xsl:template match="xqx:elementConstructor"> <xsl:value-of select="$LESSTHAN"/> <xsl:apply-templates select="xqx:tagName"/> <xsl:apply-templates select="xqx:attributeList"/> <xsl:value-of select="$GREATERTHAN"/> <xsl:apply-templates select="xqx:elementContent"/> <xsl:value-of select="$LESSTHAN"/> <xsl:value-of select="$SLASH"/> <xsl:apply-templates select="xqx:tagName"/> <xsl:value-of select="$GREATERTHAN"/> </xsl:template> <xsl:template match="xqx:tagNameExpr"> <xsl:value-of select="$LBRACE"/> <xsl:apply-templates select="*"/> <xsl:value-of select="$RBRACE"/> </xsl:template> <xsl:template match="xqx:computedElementConstructor"> <xsl:text> element </xsl:text> <xsl:apply-templates select="xqx:tagName"/> <xsl:apply-templates select="xqx:tagNameExpr"/> <xsl:value-of select="$LBRACE"/> <xsl:apply-templates select="xqx:contentExpr"/> <xsl:value-of select="$RBRACE"/> </xsl:template> <xsl:template match="xqx:computedAttributeConstructor"> <xsl:text> attribute </xsl:text> <xsl:apply-templates select="xqx:tagName"/> <xsl:apply-templates select="xqx:tagNameExpr"/> <xsl:value-of select="$LBRACE"/> <xsl:apply-templates select="xqx:valueExpr"/> <xsl:value-of select="$RBRACE"/> </xsl:template> <xsl:template match="xqx:computedDocumentConstructor"> <xsl:text> document {</xsl:text> <xsl:apply-templates select="*"/> <xsl:text> }</xsl:text> </xsl:template> <xsl:template match="xqx:computedTextConstructor"> <xsl:text> text</xsl:text> <xsl:value-of select="$LBRACE"/> <xsl:apply-templates select="*"/> <xsl:value-of select="$RBRACE"/> </xsl:template> <xsl:template match="xqx:computedCommentConstructor"> <xsl:text> comment</xsl:text> <xsl:value-of select="$LBRACE"/> <xsl:apply-templates select="*"/> <xsl:value-of select="$RBRACE"/> </xsl:template> <xsl:template match="xqx:piTargetExpr"> <xsl:value-of select="$LBRACE"/> <xsl:apply-templates select="*"/> <xsl:value-of select="$RBRACE"/> </xsl:template> <!-- Move value braces into computedPIConstructor template from this template, Bugzilla bug #3442 --> <xsl:template match="xqx:piValueExpr"> <xsl:apply-templates select="*"/> </xsl:template> <!-- Move value braces into this template from piValueExpr template, Bugzilla bug #3442 --> <xsl:template match="xqx:computedPIConstructor"> <xsl:text> processing-instruction </xsl:text> <xsl:value-of select="xqx:piTarget"/> <xsl:apply-templates select="xqx:piTargetExpr"/> <xsl:value-of select="$LBRACE"/> <xsl:apply-templates select="xqx:piValueExpr"/> <xsl:value-of select="$RBRACE"/> </xsl:template> <xsl:template match="xqx:unorderedExpr"> <xsl:text> unordered</xsl:text> <xsl:value-of select="$LBRACE"/> <xsl:text> </xsl:text> <xsl:apply-templates select="*"/> <xsl:text> </xsl:text> <xsl:value-of select="$RBRACE"/> </xsl:template> <xsl:template match="xqx:orderedExpr"> <xsl:text> ordered</xsl:text> <xsl:value-of select="$LBRACE"/> <xsl:text> </xsl:text> <xsl:apply-templates select="*"/> <xsl:text> </xsl:text> <xsl:value-of select="$RBRACE"/> </xsl:template> <xsl:template match="xqx:versionDecl"> <xsl:text> xquery version </xsl:text> <xsl:call-template name="quote"> <xsl:with-param name="item" select="xqx:version"/> </xsl:call-template> <xsl:value-of select="$SEPARATOR"/> <xsl:value-of select="$NEWLINE"/> </xsl:template> <xsl:template match="xqx:namespaceDecl"> <xsl:text>declare namespace </xsl:text> <xsl:value-of select="xqx:prefix"/> <xsl:value-of select="$EQUAL"/> <xsl:call-template name="quote"> <xsl:with-param name="item" select="xqx:uri"/> </xsl:call-template> </xsl:template> <xsl:template match="xqx:defaultNamespaceDecl"> <xsl:text>declare default </xsl:text> <xsl:value-of select="xqx:defaultNamespaceCategory"/> <xsl:text> namespace </xsl:text> <xsl:call-template name="quote"> <xsl:with-param name="item" select="xqx:uri"/> </xsl:call-template> </xsl:template> <xsl:template match="xqx:defaultCollationDecl"> <xsl:text>declare default collation </xsl:text> <xsl:call-template name="quote"> <xsl:with-param name="item" select="."/> </xsl:call-template> </xsl:template> <xsl:template match="xqx:baseUriDecl"> <xsl:text>declare base-uri </xsl:text> <xsl:call-template name="quote"> <xsl:with-param name="item" select="."/> </xsl:call-template> </xsl:template> <xsl:template match="xqx:constructionDecl"> <xsl:text>declare construction </xsl:text> <xsl:value-of select="."/> </xsl:template> <xsl:template match="xqx:orderingModeDecl"> <xsl:text>declare ordering </xsl:text> <xsl:value-of select="."/> </xsl:template> <xsl:template match="xqx:emptyOrderingDecl"> <xsl:text>declare default order </xsl:text> <xsl:value-of select="."/> </xsl:template> <xsl:template match="xqx:copyNamespacesDecl"> <xsl:text>declare copy-namespaces </xsl:text> <xsl:value-of select="xqx:preserveMode"/> <xsl:value-of select="$COMMA"/> <xsl:value-of select="xqx:inheritMode"/> </xsl:template> <xsl:template match="xqx:optionDecl"> <xsl:text>declare option </xsl:text> <xsl:apply-templates select="xqx:optionName"/> <xsl:value-of select="$SPACE"/> <xsl:call-template name="quote"> <xsl:with-param name="item" select="xqx:optionContents"/> </xsl:call-template> </xsl:template> <xsl:template match="xqx:voidSequenceType"> <xsl:text>empty-sequence()</xsl:text> </xsl:template> <xsl:template match="xqx:occurrenceIndicator"> <xsl:value-of select="."/> </xsl:template> <xsl:template match="xqx:anyItemType"> <xsl:text>item()</xsl:text> </xsl:template> <xsl:template match="xqx:sequenceType"> <xsl:apply-templates select="*"/> </xsl:template> <xsl:template match="xqx:singleType"> <xsl:apply-templates select="xqx:atomicType"/> <xsl:if test="xqx:optional"> <xsl:text>?</xsl:text> </xsl:if> </xsl:template> <xsl:template match="xqx:typeDeclaration"> <xsl:text> as </xsl:text> <xsl:apply-templates select="*"/> </xsl:template> <xsl:template match="xqx:varDecl"> <xsl:text>declare variable </xsl:text> <xsl:value-of select="$DOLLAR"/> <xsl:apply-templates select="xqx:varName"/> <xsl:apply-templates select="xqx:typeDeclaration"/> <xsl:if test="xqx:external"> <xsl:text> external </xsl:text> </xsl:if> <xsl:if test="xqx:varValue"> <xsl:value-of select="$ASSIGN"/> <xsl:apply-templates select="xqx:varValue"/> </xsl:if> </xsl:template> <!-- Part of fix for Bugzilla bug #3520 --> <xsl:template match="xqx:targetLocation"> <xsl:choose> <xsl:when test="position()=1"> at </xsl:when> <xsl:otherwise>,
 </xsl:otherwise> </xsl:choose> <xsl:call-template name="quote"> <xsl:with-param name="item" select="."/> </xsl:call-template> </xsl:template> <!-- Modified to fix Bugzilla bug #3520 --> <xsl:template match="xqx:schemaImport"> <xsl:text> import schema </xsl:text> <xsl:if test="xqx:defaultElementNamespace"> <xsl:text> default element namespace </xsl:text> </xsl:if> <xsl:if test="xqx:namespacePrefix"> <xsl:text> namespace </xsl:text> <xsl:value-of select="xqx:namespacePrefix"/> <xsl:value-of select="$EQUAL"/> </xsl:if> <xsl:call-template name="quote"> <xsl:with-param name="item" select="xqx:targetNamespace"/> </xsl:call-template> <xsl:apply-templates select="xqx:targetLocation"/> </xsl:template> <!-- Modified to fix Bugzilla bug #3520 --> <xsl:template match="xqx:moduleImport"> <xsl:text> import module </xsl:text> <xsl:if test="xqx:namespacePrefix"> <xsl:text> namespace </xsl:text> <xsl:value-of select="xqx:namespacePrefix"/> <xsl:value-of select="$EQUAL"/> </xsl:if> <xsl:call-template name="quote"> <xsl:with-param name="item" select="xqx:targetNamespace"/> </xsl:call-template> <xsl:apply-templates select="xqx:targetLocation"/> </xsl:template> <xsl:template match="xqx:param"> <xsl:value-of select="$DOLLAR"/> <xsl:apply-templates select="xqx:varName"/> <xsl:apply-templates select="xqx:typeDeclaration"/> </xsl:template> <xsl:template match="xqx:paramList"> <xsl:call-template name="parenthesizedList"/> </xsl:template> <xsl:template match="xqx:functionBody"> <xsl:value-of select="$NEWLINE"/> <xsl:value-of select="$LBRACE"/> <xsl:value-of select="$NEWLINE"/> <xsl:apply-templates/> <xsl:value-of select="$NEWLINE"/> <xsl:value-of select="$RBRACE"/> </xsl:template> <xsl:template match="xqx:functionDecl"> <xsl:text>declare function </xsl:text> <xsl:apply-templates select="xqx:functionName"/> <xsl:apply-templates select="xqx:paramList"/> <xsl:apply-templates select="xqx:typeDeclaration"/> <xsl:apply-templates select="xqx:functionBody"/> <xsl:if test="xqx:externalDefinition"> <xsl:text> external </xsl:text> </xsl:if> </xsl:template> <xsl:template match="xqx:queryBody"> <xsl:apply-templates select="*"/> <xsl:value-of select="$NEWLINE"/> </xsl:template> <xsl:template match="xqx:moduleDecl"> <xsl:text> module namespace </xsl:text> <xsl:value-of select="xqx:prefix"/> <xsl:value-of select="$EQUAL"/> <xsl:call-template name="quote"> <xsl:with-param name="item" select="xqx:uri" /> </xsl:call-template> <xsl:value-of select="$SEPARATOR"/> <xsl:value-of select="$NEWLINE"/> </xsl:template> <xsl:template match="xqx:prolog"> <xsl:for-each select="*"> <xsl:apply-templates select="."/> <xsl:value-of select="$SEPARATOR"/> <xsl:value-of select="$NEWLINE"/> </xsl:for-each> </xsl:template> <xsl:template match="xqx:libraryModule"> <xsl:apply-templates select="xqx:moduleDecl"/> <xsl:apply-templates select="xqx:prolog"/> </xsl:template> <xsl:template match="xqx:mainModule"> <xsl:apply-templates select="xqx:prolog"/> <xsl:apply-templates select="xqx:queryBody"/> </xsl:template> <xsl:template match="xqx:module" priority="2"> <xsl:apply-templates select="*"/> </xsl:template> <xsl:template match="/xqx:*"> <xsl:message terminate="yes">Incorrect XQueryX: The only top-level element permitted is xqx:module</xsl:message> </xsl:template> </xsl:stylesheet>
application/xquery+xml
Media TypeThis Appendix specifies the media type for XQueryX Version 1.0. XQueryX is the XML syntax of a language, XQuery, for querying over data from XML data sources, as specified in [XQuery 1.0: An XML Query Language].
Note:
Specification of media types is described in [RFC 3023].
This document, together with its normative references, defines the
XML syntax for the XML Query language XQuery Version 1.0.
This Appendix specifies the application/xquery+xml
media type,
which is intended to be used for transmitting queries expressed in the
XQueryX syntax.
This media type is being submitted to the IESG for review, approval, and registration with IANA.
This document was prepared by members of the W3C XML Query Working Group. Please send comments to public-qt-comments@w3.org, a public mailing list with archives at http://lists.w3.org/Archives/Public/public-qt-comments.
application/xquery+xml
MIME media type name: application
MIME subtype name: xquery+xml
Required parameters: none
Optional parameters: charset
This parameter has identical semantics to the charset parameter of the application/xml media type as specified in [RFC 3023].
The considerations as specified in [RFC 3023] also hold for 'application/xquery+xml'.
Queries written in XQueryX may cause arbitrary URIs to be
dereferenced. Therefore, the security issues of [RFC 3023]
Section 6 should be considered.
In addition, the contents of file:
URIs can in some cases be
accessed, processed and returned as results.
Furthermore, because the XQuery language (and thus the XQueryX language) permits extensions,
it is possible that application/xquery+xml
may describe content that has security implications beyond those described here.
However, if the processor follows only the normative semantics of this
specification, this content will be ignored. Only in the case
where the processor recognizes and processes the additional
content, or where further processing of that content is dispatched
to other processors, would security issues arise.
The XML Query Working group is working on a facility to allow XQuery (and thus XQueryX) expressions to be used to create and update persistent data. Untrusted queries should not be given write access to data.
See Section 5 ConformanceXQ.
The public XQuery Web page lists more than two dozen implementations of the XQuery language, both proprietary and open source. Some of these are known to support XQueryX.
This new media type is being registered to allow for deployment of XQueryX on the World Wide Web.
There is no experimental, vendor specific, or personal tree predecessor to "application/xquery+xml", reflecting the fact that no applications currently recognize it. This new type is being registered in order to allow for the expected deployment of XQueryX 1.0 on the World Wide Web, as a first class XML application.
Although no byte sequences can be counted on to consistently identify XQueryX, XQueryX documents will have the sequence "http://www.w3.org/2005/XQueryX" to identify the XQueryX namespace. This sequence will normally be found in a namespace attribute of the first element in the document.
Jim Melton, Oracle Corp., jim.melton@oracle.com
The intended usage of this media type is for interchange of XQueryX expressions.
This appendix lists the changes that have been made to this specification since the publication of the Candidate Recommendation Draft on 2005-11-03.
In response to Bugzilla bug #2611, the text of Section 5 was rewritten to clarify the way in which XQuery is trivially embedded in XQueryX documents.
In response to Bugzilla bug #2523, changes have been made to both the XML Schema for XQueryX and to the XSLT stylesheet for XQueryX. The changes to the XML Schema eliminated xqx:rootExpr as a top-level element (it can now appear only as a component of an xqx:pathExpr) and refined the content model for xqx:stepExpr (to make the use of xqx:xpathAxis required in each step) and xqx:pathExpr (to more closely match the XQuery surface syntax). The changes to the XSLT stylesheet simply align the stylesheet with the revised Schema.
In response to Bugzilla bug #3022, a change was made to the XSLT stylesheet for XQueryX. The change fixed the handling of an empty xqx:Wildcard element so that it properly generates the "*" required by XQuery surface syntax.
In response to Bugzilla bug #3333, a change was made to both the XML Schema for XQueryX and the XSLT stylesheet for XQueryX. The change to the XML Schema removed the definition of the <xqx:parenthesizedExpr/> element. The change to the XSLT stylesheet has the effect of putting parentheses around ever generated FLWOR expression.
In response to Bugzilla bug #3442, the XSLT stylesheet for XQueryX was modified so that the braces associated with a computed processing instruction constructor value are always generated, instead of being generated only when such a value is specified.
In response to Bugzilla bugs #3446 and #3474, the XSLT stylesheet for XQueryX was modified so that certain white space characters (#xD/CR, #x85/NEL, and #x2028 LINE SEPARATOR) in XQueryX text and attribute nodes are always represented in the generated XQuery expressions as character entities (e.g., &#x85) and that the left angle bracket (LESS THAN, "<") is represented as a character entity (&lt;). In addition, two additional white space characters (#xA/NL and #x9/TAB) that appear in attribute value expressions are represented as character entities (&#xA and &#x9, respectively).
In response to Bugzilla bugs #3446 and #3474, the XSLT stylesheet for XQueryX was modified so that multiple xqx:targetLocation elements contained in xqx:schemaImport and xqx:moduleImport elements are processed correctly.
Minor changes were made to the XML Schema and the XSLT stylesheet for XQueryX to make them more resilient for future versions of XQueryX and to the inclusion of additional language specifications such as the XPath/XQuery Full-Text spec. These changes were primarily of the nature of rearranging the manner in which certain elements are defined in the Schema.
The at-risk feature Trivial Embedding was removed from this document (and from the XQuery 1.0 document) before requesting the Director's permission to advance to Proposed Recommendation because of insufficient implementation experience.