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XPathDynamicContext
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net.sf.saxon.sxpath</FONT>
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Class XPathDynamicContext</H2>
<PRE>
<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A>
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>net.sf.saxon.sxpath.XPathDynamicContext</B>
</PRE>
<HR>
<DL>
<DT><PRE>public class <B>XPathDynamicContext</B><DT>extends <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></DL>
</PRE>
<P>
This object represents the dynamic XPath execution context for use in the free-standing Saxon XPath API.
The dynamic context holds the context item and the values of external variables used by the XPath expression.
<p>This object is always created via the method
<A HREF="../../../../net/sf/saxon/sxpath/XPathExpression.html#createDynamicContext(net.sf.saxon.om.Item)"><CODE>XPathExpression.createDynamicContext(net.sf.saxon.om.Item)</CODE></A></p>
<P>
<P>
<HR>
<P>
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected </CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/sxpath/XPathDynamicContext.html#XPathDynamicContext(net.sf.saxon.type.ItemType, net.sf.saxon.expr.XPathContextMajor, net.sf.saxon.expr.instruct.SlotManager)">XPathDynamicContext</A></B>(<A HREF="../../../../net/sf/saxon/type/ItemType.html" title="interface in net.sf.saxon.type">ItemType</A> contextItemType,
<A HREF="../../../../net/sf/saxon/expr/XPathContextMajor.html" title="class in net.sf.saxon.expr">XPathContextMajor</A> contextObject,
<A HREF="../../../../net/sf/saxon/expr/instruct/SlotManager.html" title="class in net.sf.saxon.expr.instruct">SlotManager</A> stackFrameMap)</CODE>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/sxpath/XPathDynamicContext.html#checkExternalVariables(net.sf.saxon.expr.instruct.SlotManager, int)">checkExternalVariables</A></B>(<A HREF="../../../../net/sf/saxon/expr/instruct/SlotManager.html" title="class in net.sf.saxon.expr.instruct">SlotManager</A> stackFrameMap,
int numberOfExternals)</CODE>
<BR>
Check that all external variables have been given a value</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../net/sf/saxon/lib/CollectionURIResolver.html" title="interface in net.sf.saxon.lib">CollectionURIResolver</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/sxpath/XPathDynamicContext.html#getCollectionURIResolver()">getCollectionURIResolver</A></B>()</CODE>
<BR>
Get the CollectionURIResolver used for resolving references to collections.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../net/sf/saxon/om/Item.html" title="interface in net.sf.saxon.om">Item</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/sxpath/XPathDynamicContext.html#getContextItem()">getContextItem</A></B>()</CODE>
<BR>
Get the context item</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="http://download.oracle.com/javase/6/docs/api/javax/xml/transform/ErrorListener.html?is-external=true" title="class or interface in javax.xml.transform">ErrorListener</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/sxpath/XPathDynamicContext.html#getErrorListener()">getErrorListener</A></B>()</CODE>
<BR>
Get the error listener.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="http://download.oracle.com/javase/6/docs/api/javax/xml/transform/URIResolver.html?is-external=true" title="class or interface in javax.xml.transform">URIResolver</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/sxpath/XPathDynamicContext.html#getURIResolver()">getURIResolver</A></B>()</CODE>
<BR>
Get the URI resolver.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../net/sf/saxon/expr/XPathContext.html" title="interface in net.sf.saxon.expr">XPathContext</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/sxpath/XPathDynamicContext.html#getXPathContextObject()">getXPathContextObject</A></B>()</CODE>
<BR>
For system use: get the wrapped XPathContext object</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/sxpath/XPathDynamicContext.html#setCollectionURIResolver(net.sf.saxon.lib.CollectionURIResolver)">setCollectionURIResolver</A></B>(<A HREF="../../../../net/sf/saxon/lib/CollectionURIResolver.html" title="interface in net.sf.saxon.lib">CollectionURIResolver</A> resolver)</CODE>
<BR>
Set the CollectionURIResolver used for resolving collection URIs.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/sxpath/XPathDynamicContext.html#setContextItem(net.sf.saxon.om.Item)">setContextItem</A></B>(<A HREF="../../../../net/sf/saxon/om/Item.html" title="interface in net.sf.saxon.om">Item</A> item)</CODE>
<BR>
Set the context item for evaluation of the XPath Expression</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/sxpath/XPathDynamicContext.html#setContextNode(javax.xml.transform.Source)">setContextNode</A></B>(<A HREF="http://download.oracle.com/javase/6/docs/api/javax/xml/transform/Source.html?is-external=true" title="class or interface in javax.xml.transform">Source</A> source)</CODE>
<BR>
Set the context item to a node derived from a supplied Source object.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/sxpath/XPathDynamicContext.html#setErrorListener(javax.xml.transform.ErrorListener)">setErrorListener</A></B>(<A HREF="http://download.oracle.com/javase/6/docs/api/javax/xml/transform/ErrorListener.html?is-external=true" title="class or interface in javax.xml.transform">ErrorListener</A> listener)</CODE>
<BR>
Set the error listener.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/sxpath/XPathDynamicContext.html#setURIResolver(javax.xml.transform.URIResolver)">setURIResolver</A></B>(<A HREF="http://download.oracle.com/javase/6/docs/api/javax/xml/transform/URIResolver.html?is-external=true" title="class or interface in javax.xml.transform">URIResolver</A> resolver)</CODE>
<BR>
Set an object that will be used to resolve URIs used in
document(), etc.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/sxpath/XPathDynamicContext.html#setVariable(net.sf.saxon.sxpath.XPathVariable, net.sf.saxon.om.ValueRepresentation)">setVariable</A></B>(<A HREF="../../../../net/sf/saxon/sxpath/XPathVariable.html" title="class in net.sf.saxon.sxpath">XPathVariable</A> variable,
<A HREF="../../../../net/sf/saxon/om/ValueRepresentation.html" title="interface in net.sf.saxon.om">ValueRepresentation</A> value)</CODE>
<BR>
Set the value of an external variable used within the XPath expression</TD>
</TR>
</TABLE>
<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
</TR>
</TABLE>
<P>
<!-- ========= CONSTRUCTOR DETAIL ======== -->
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<B>Constructor Detail</B></FONT></TH>
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<A NAME="XPathDynamicContext(net.sf.saxon.type.ItemType, net.sf.saxon.expr.XPathContextMajor, net.sf.saxon.expr.instruct.SlotManager)"><!-- --></A><H3>
XPathDynamicContext</H3>
<PRE>
protected <B>XPathDynamicContext</B>(<A HREF="../../../../net/sf/saxon/type/ItemType.html" title="interface in net.sf.saxon.type">ItemType</A> contextItemType,
<A HREF="../../../../net/sf/saxon/expr/XPathContextMajor.html" title="class in net.sf.saxon.expr">XPathContextMajor</A> contextObject,
<A HREF="../../../../net/sf/saxon/expr/instruct/SlotManager.html" title="class in net.sf.saxon.expr.instruct">SlotManager</A> stackFrameMap)</PRE>
<DL>
</DL>
<!-- ============ METHOD DETAIL ========== -->
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<B>Method Detail</B></FONT></TH>
</TR>
</TABLE>
<A NAME="setContextNode(javax.xml.transform.Source)"><!-- --></A><H3>
setContextNode</H3>
<PRE>
public void <B>setContextNode</B>(<A HREF="http://download.oracle.com/javase/6/docs/api/javax/xml/transform/Source.html?is-external=true" title="class or interface in javax.xml.transform">Source</A> source)
throws <A HREF="../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></PRE>
<DL>
<DD>Set the context item to a node derived from a supplied Source object. This may be
any implementation of the Source interface recognized by Saxon. Note that the
Saxon <A HREF="../../../../net/sf/saxon/om/NodeInfo.html" title="interface in net.sf.saxon.om"><CODE>NodeInfo</CODE></A> interface, representing a node in a tree, is one such
implementation; others include <A HREF="http://download.oracle.com/javase/6/docs/api/javax/xml/transform/stream/StreamSource.html?is-external=true" title="class or interface in javax.xml.transform.stream"><CODE>StreamSource</CODE></A>,
<A HREF="http://download.oracle.com/javase/6/docs/api/javax/xml/transform/sax/SAXSource.html?is-external=true" title="class or interface in javax.xml.transform.sax"><CODE>SAXSource</CODE></A>, and <A HREF="http://download.oracle.com/javase/6/docs/api/javax/xml/transform/dom/DOMSource.html?is-external=true" title="class or interface in javax.xml.transform.dom"><CODE>DOMSource</CODE></A>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>source</CODE> - The source object representing the node that will be used as the context item
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></CODE> - if a failure occurs reading or parsing a Source object to build an input tree,
or if the source is a document that was built under the wrong configuration</DL>
</DD>
</DL>
<HR>
<A NAME="setContextItem(net.sf.saxon.om.Item)"><!-- --></A><H3>
setContextItem</H3>
<PRE>
public void <B>setContextItem</B>(<A HREF="../../../../net/sf/saxon/om/Item.html" title="interface in net.sf.saxon.om">Item</A> item)
throws <A HREF="../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></PRE>
<DL>
<DD>Set the context item for evaluation of the XPath Expression
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>item</CODE> - the context item
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></CODE> - if the node is in a document that was built under the wrong configuration</DL>
</DD>
</DL>
<HR>
<A NAME="getContextItem()"><!-- --></A><H3>
getContextItem</H3>
<PRE>
public <A HREF="../../../../net/sf/saxon/om/Item.html" title="interface in net.sf.saxon.om">Item</A> <B>getContextItem</B>()</PRE>
<DL>
<DD>Get the context item
<P>
<DD><DL>
<DT><B>Returns:</B><DD>the context item if there is one, or null otherwise</DL>
</DD>
</DL>
<HR>
<A NAME="setVariable(net.sf.saxon.sxpath.XPathVariable, net.sf.saxon.om.ValueRepresentation)"><!-- --></A><H3>
setVariable</H3>
<PRE>
public void <B>setVariable</B>(<A HREF="../../../../net/sf/saxon/sxpath/XPathVariable.html" title="class in net.sf.saxon.sxpath">XPathVariable</A> variable,
<A HREF="../../../../net/sf/saxon/om/ValueRepresentation.html" title="interface in net.sf.saxon.om">ValueRepresentation</A> value)
throws <A HREF="../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></PRE>
<DL>
<DD>Set the value of an external variable used within the XPath expression
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>variable</CODE> - the object representing the variable, as returned by the
<A HREF="../../../../net/sf/saxon/sxpath/XPathEvaluator.html#declareVariable(java.lang.String, java.lang.String)"><CODE>XPathEvaluator.declareVariable(String, String)</CODE></A> method.
Note that setting the value of a variable does not modify the <A HREF="../../../../net/sf/saxon/sxpath/XPathVariable.html" title="class in net.sf.saxon.sxpath"><CODE>XPathVariable</CODE></A>
object itself, which means that this method is thread-safe.<DD><CODE>value</CODE> - The value of the variable.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></CODE> - if the supplied value does not conform to the required type of the
variable; or if the supplied value contains a node that does not belong to this Configuration
(or another Configuration that shares the same namePool)</DL>
</DD>
</DL>
<HR>
<A NAME="setURIResolver(javax.xml.transform.URIResolver)"><!-- --></A><H3>
setURIResolver</H3>
<PRE>
public void <B>setURIResolver</B>(<A HREF="http://download.oracle.com/javase/6/docs/api/javax/xml/transform/URIResolver.html?is-external=true" title="class or interface in javax.xml.transform">URIResolver</A> resolver)</PRE>
<DL>
<DD>Set an object that will be used to resolve URIs used in
document(), etc.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>resolver</CODE> - An object that implements the URIResolver interface, or
null.<DT><B>Since:</B></DT>
<DD>9.2</DD>
</DL>
</DD>
</DL>
<HR>
<A NAME="getURIResolver()"><!-- --></A><H3>
getURIResolver</H3>
<PRE>
public <A HREF="http://download.oracle.com/javase/6/docs/api/javax/xml/transform/URIResolver.html?is-external=true" title="class or interface in javax.xml.transform">URIResolver</A> <B>getURIResolver</B>()</PRE>
<DL>
<DD>Get the URI resolver.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>the user-supplied URI resolver if there is one, or null otherwise.<DT><B>Since:</B></DT>
<DD>9.2</DD>
</DL>
</DD>
</DL>
<HR>
<A NAME="setCollectionURIResolver(net.sf.saxon.lib.CollectionURIResolver)"><!-- --></A><H3>
setCollectionURIResolver</H3>
<PRE>
public void <B>setCollectionURIResolver</B>(<A HREF="../../../../net/sf/saxon/lib/CollectionURIResolver.html" title="interface in net.sf.saxon.lib">CollectionURIResolver</A> resolver)</PRE>
<DL>
<DD>Set the CollectionURIResolver used for resolving collection URIs.
Defaults to the CollectionURIResolver registered with the Configuration
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>resolver</CODE> - the resolver for references to collections<DT><B>Since:</B></DT>
<DD>9.4</DD>
</DL>
</DD>
</DL>
<HR>
<A NAME="getCollectionURIResolver()"><!-- --></A><H3>
getCollectionURIResolver</H3>
<PRE>
public <A HREF="../../../../net/sf/saxon/lib/CollectionURIResolver.html" title="interface in net.sf.saxon.lib">CollectionURIResolver</A> <B>getCollectionURIResolver</B>()</PRE>
<DL>
<DD>Get the CollectionURIResolver used for resolving references to collections.
If none has been set on the Controller, returns the
CollectionURIResolver registered with the Configuration
<P>
<DD><DL>
<DT><B>Returns:</B><DD>the resolver for references to collections<DT><B>Since:</B></DT>
<DD>9.4</DD>
</DL>
</DD>
</DL>
<HR>
<A NAME="setErrorListener(javax.xml.transform.ErrorListener)"><!-- --></A><H3>
setErrorListener</H3>
<PRE>
public void <B>setErrorListener</B>(<A HREF="http://download.oracle.com/javase/6/docs/api/javax/xml/transform/ErrorListener.html?is-external=true" title="class or interface in javax.xml.transform">ErrorListener</A> listener)</PRE>
<DL>
<DD>Set the error listener.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>listener</CODE> - the ErrorListener to be used<DT><B>Since:</B></DT>
<DD>9.2</DD>
</DL>
</DD>
</DL>
<HR>
<A NAME="getErrorListener()"><!-- --></A><H3>
getErrorListener</H3>
<PRE>
public <A HREF="http://download.oracle.com/javase/6/docs/api/javax/xml/transform/ErrorListener.html?is-external=true" title="class or interface in javax.xml.transform">ErrorListener</A> <B>getErrorListener</B>()</PRE>
<DL>
<DD>Get the error listener.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>the ErrorListener in use<DT><B>Since:</B></DT>
<DD>9.2</DD>
</DL>
</DD>
</DL>
<HR>
<A NAME="getXPathContextObject()"><!-- --></A><H3>
getXPathContextObject</H3>
<PRE>
public <A HREF="../../../../net/sf/saxon/expr/XPathContext.html" title="interface in net.sf.saxon.expr">XPathContext</A> <B>getXPathContextObject</B>()</PRE>
<DL>
<DD>For system use: get the wrapped XPathContext object
<P>
<DD><DL>
<DT><B>Returns:</B><DD>the underlying XPathContext object</DL>
</DD>
</DL>
<HR>
<A NAME="checkExternalVariables(net.sf.saxon.expr.instruct.SlotManager, int)"><!-- --></A><H3>
checkExternalVariables</H3>
<PRE>
protected void <B>checkExternalVariables</B>(<A HREF="../../../../net/sf/saxon/expr/instruct/SlotManager.html" title="class in net.sf.saxon.expr.instruct">SlotManager</A> stackFrameMap,
int numberOfExternals)
throws <A HREF="../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></PRE>
<DL>
<DD>Check that all external variables have been given a value
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>stackFrameMap</CODE> - describes the stack frame<DD><CODE>numberOfExternals</CODE> - the number of variables that need to be supplied
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></CODE> - if required variables have not been given a value</DL>
</DD>
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