5380 2008-01-16 18:15:43 +0000 Clarify XSD vs. xsi:schemaLocation attribute 2008-01-22 12:47:41 +0000 1 1 1 Unclassified SML Interchange Format unspecified PC Windows XP RESOLVED FIXED P2 normal LC 1 kirk.wilson kumarp public-sml oldest_to_newest 18360 0 kirk.wilson 2008-01-16 18:15:43 +0000 Section 4: there is reference to xsi:schemaLocation occurring in Schema documents. I believe this is permitted, but this use of the schemaLocation attribute is rare and is not referred to again in the text. Section 4 should more explicitly recognize the distinction between the xsi:schemaLocation attributes that typically occurs in model instance documents (but must be address wherever it occurs) vs. the schemaLocation attribute in the XSDL <import> (which also has to be addressed). In particular, section 5.3.3 should address both the XSD schemaLocation attribute, which it does, and the second parameter of the xsi:schemaLocation attribute. 18366 1 sandygao 2008-01-16 20:07:00 +0000 > Section 4: there is reference to xsi:schemaLocation occurring in Schema > documents. I agree this sentence (in 4.0) is not optimal. Suggest to remove "xsi:". (Just went back and checked my proposal for this section, and it didn't have "xsi:". Some kind of copy/paste error must have happened when the proposal was incorporated.) > Section 4 should more explicitly recognize the distinction between the > xsi:schemaLocation attributes that typically occurs in model instance > documents (but must be address wherever it occurs) They are not required to be addressed. See the first bullet 3 in section 4.3.2 of http://www.w3.org/TR/xmlschema-1/ > vs. the schemaLocation attribute in the XSDL <import> (which also has to be > addressed). These are not required to be addressed either. See "Schema Document Location Strategy" in section 4.3.2 of http://www.w3.org/TR/xmlschema-1/. I agree that different schema location cases need to be distinguished. This is implicitly covered in section 5.3.3 and 5.5, where xsi:schemaLocation and schemaLocation on <xs:import> are ignored (only schemaLocation on <xs:include> and <xs:redefine> are used). Don't feel strongly about whether section 4 should give an informal statement about this situation. > In particular, section 5.3.3 should address ... the second parameter of the > xsi:schemaLocation attribute. I think the decision we made was to ignore xsi:schemaLocation attributes (and schemaLocation on <xs:import> elements), and use "namespace matching" to locate relevant schema documents. One reason we chose to do this is to improve inter-op, because how these attributes are handled almost completely depends on the schema processor. Are you suggesting that we should reopen that topic? 18394 2 virginia.smith 2008-01-17 19:19:28 +0000 In response to the final question in comment #1 - Kirk's answer is 'no'. 18452 3 kumarp 2008-01-22 12:45:59 +0000 updated section 4 to use the following sentence: Less obvious are such references as certain schemaLocation attributes in schema documents and xsi:schemaLocation attributes in instance documents. Section 4.4 Schema Document Bindings defines how schemaLocation is processed in these cases.