XQueryX Example

	for $b in document("bib.xml")//book
	  where $b/publisher = "Morgan Kaufmann" AND $b/year = "1998"
		return $b/title
   

becomes:

  <q:flwr>
	<q:forAssignment variable="$b">
	  <q:step axis="slashslash">
		<q:function name="document">
		  <q:constant datatype="charstring">bib.xml</q:constant>
		</q:function>
		<q:identifier>book</q:identifier>
	  </q:step>
	</q:forAssignment>
	<q:where>
	  <q:function name="and">
		<q:function name="equals">
		  <q:step axis="child">
			<q:variable>$b</q:variable>
			<q:identifier>publisher</q:identifier>
		  </q:step>
		  <q:constant datatype="charstring">Morgan Kaufmann</q:constant>
		</q:function>
		<q:function name="equals">
		  <q:step axis="child">
			<q:variable>$b</q:variable>
			<q:identifier>year</q:identifier>
		  </q:step>
		  <q:constant datatype="charstring">1998</q:constant>
		</q:function>
	  </q:function>
	</q:where>
	<q:return>
	  <q:step axis="child">
		<q:variable>$b</q:variable>
		<q:identifier>title</q:identifier>
	  </q:step>
	</q:return>
  </q:flwr>