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AnchorPattern
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net.sf.saxon.pattern</FONT>
<BR>
Class AnchorPattern</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 "><A HREF="../../../../net/sf/saxon/pattern/Pattern.html" title="class in net.sf.saxon.pattern">net.sf.saxon.pattern.Pattern</A>
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>net.sf.saxon.pattern.AnchorPattern</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD><A HREF="http://download.oracle.com/javase/6/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/javax/xml/transform/SourceLocator.html?is-external=true" title="class or interface in javax.xml.transform">SourceLocator</A>, <A HREF="../../../../net/sf/saxon/expr/Container.html" title="interface in net.sf.saxon.expr">Container</A>, <A HREF="../../../../net/sf/saxon/pattern/PatternFinder.html" title="interface in net.sf.saxon.pattern">PatternFinder</A></DD>
</DL>
<HR>
<DL>
<DT><PRE>public class <B>AnchorPattern</B><DT>extends <A HREF="../../../../net/sf/saxon/pattern/Pattern.html" title="class in net.sf.saxon.pattern">Pattern</A></DL>
</PRE>
<P>
This is a special pattern that matches the "anchor node"; it is not used for XSLT patterns,
but for the selectors that arise when evaluating XPath expressions in streaming mode; the anchor
node is the context node for the streamed XPath evaluation.
<P>
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../serialized-form.html#net.sf.saxon.pattern.AnchorPattern">Serialized Form</A></DL>
<HR>
<P>
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<B>Constructor Summary</B></FONT></TH>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../net/sf/saxon/pattern/AnchorPattern.html#AnchorPattern()">AnchorPattern</A></B>()</CODE>
<BR>
</TD>
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<!-- ========== METHOD SUMMARY =========== -->
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<B>Method Summary</B></FONT></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../net/sf/saxon/pattern/Pattern.html" title="class in net.sf.saxon.pattern">Pattern</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/pattern/AnchorPattern.html#analyze(net.sf.saxon.expr.parser.ExpressionVisitor, net.sf.saxon.expr.parser.ExpressionVisitor.ContextItemType)">analyze</A></B>(<A HREF="../../../../net/sf/saxon/expr/parser/ExpressionVisitor.html" title="class in net.sf.saxon.expr.parser">ExpressionVisitor</A> visitor,
<A HREF="../../../../net/sf/saxon/expr/parser/ExpressionVisitor.ContextItemType.html" title="class in net.sf.saxon.expr.parser">ExpressionVisitor.ContextItemType</A> contextItemType)</CODE>
<BR>
Type-check the pattern.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../net/sf/saxon/type/ItemType.html" title="interface in net.sf.saxon.type">ItemType</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/pattern/AnchorPattern.html#getItemType()">getItemType</A></B>()</CODE>
<BR>
Get a NodeTest that all the nodes matching this pattern must satisfy</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/pattern/AnchorPattern.html#internalMatches(net.sf.saxon.om.NodeInfo, net.sf.saxon.om.NodeInfo, net.sf.saxon.expr.XPathContext)">internalMatches</A></B>(<A HREF="../../../../net/sf/saxon/om/NodeInfo.html" title="interface in net.sf.saxon.om">NodeInfo</A> node,
<A HREF="../../../../net/sf/saxon/om/NodeInfo.html" title="interface in net.sf.saxon.om">NodeInfo</A> anchor,
<A HREF="../../../../net/sf/saxon/expr/XPathContext.html" title="interface in net.sf.saxon.expr">XPathContext</A> context)</CODE>
<BR>
Determine whether this Pattern matches the given Node.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/pattern/AnchorPattern.html#matches(net.sf.saxon.om.Item, net.sf.saxon.expr.XPathContext)">matches</A></B>(<A HREF="../../../../net/sf/saxon/om/Item.html" title="interface in net.sf.saxon.om">Item</A> item,
<A HREF="../../../../net/sf/saxon/expr/XPathContext.html" title="interface in net.sf.saxon.expr">XPathContext</A> context)</CODE>
<BR>
Determine whether this Pattern matches the given Node.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/pattern/AnchorPattern.html#matchesBeneathAnchor(net.sf.saxon.om.NodeInfo, net.sf.saxon.om.NodeInfo, net.sf.saxon.expr.XPathContext)">matchesBeneathAnchor</A></B>(<A HREF="../../../../net/sf/saxon/om/NodeInfo.html" title="interface in net.sf.saxon.om">NodeInfo</A> node,
<A HREF="../../../../net/sf/saxon/om/NodeInfo.html" title="interface in net.sf.saxon.om">NodeInfo</A> anchor,
<A HREF="../../../../net/sf/saxon/expr/XPathContext.html" title="interface in net.sf.saxon.expr">XPathContext</A> context)</CODE>
<BR>
Determine whether this pattern matches a given Node within the subtree rooted at a given
anchor node.</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/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/pattern/AnchorPattern.html#toString()">toString</A></B>()</CODE>
<BR>
Get the original pattern text</TD>
</TR>
</TABLE>
<A NAME="methods_inherited_from_class_net.sf.saxon.pattern.Pattern"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class net.sf.saxon.pattern.<A HREF="../../../../net/sf/saxon/pattern/Pattern.html" title="class in net.sf.saxon.pattern">Pattern</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../net/sf/saxon/pattern/Pattern.html#allocateSlots(net.sf.saxon.expr.StaticContext, net.sf.saxon.expr.instruct.SlotManager, int)">allocateSlots</A>, <A HREF="../../../../net/sf/saxon/pattern/Pattern.html#getColumnNumber()">getColumnNumber</A>, <A HREF="../../../../net/sf/saxon/pattern/Pattern.html#getContainerGranularity()">getContainerGranularity</A>, <A HREF="../../../../net/sf/saxon/pattern/Pattern.html#getDefaultPriority()">getDefaultPriority</A>, <A HREF="../../../../net/sf/saxon/pattern/Pattern.html#getDependencies()">getDependencies</A>, <A HREF="../../../../net/sf/saxon/pattern/Pattern.html#getExecutable()">getExecutable</A>, <A HREF="../../../../net/sf/saxon/pattern/Pattern.html#getFingerprint()">getFingerprint</A>, <A HREF="../../../../net/sf/saxon/pattern/Pattern.html#getHostLanguage()">getHostLanguage</A>, <A HREF="../../../../net/sf/saxon/pattern/Pattern.html#getLineNumber()">getLineNumber</A>, <A HREF="../../../../net/sf/saxon/pattern/Pattern.html#getLocationProvider()">getLocationProvider</A>, <A HREF="../../../../net/sf/saxon/pattern/Pattern.html#getNodeKind()">getNodeKind</A>, <A HREF="../../../../net/sf/saxon/pattern/Pattern.html#getPublicId()">getPublicId</A>, <A HREF="../../../../net/sf/saxon/pattern/Pattern.html#getSystemId()">getSystemId</A>, <A HREF="../../../../net/sf/saxon/pattern/Pattern.html#iterateSubExpressions()">iterateSubExpressions</A>, <A HREF="../../../../net/sf/saxon/pattern/Pattern.html#make(java.lang.String, net.sf.saxon.expr.StaticContext, net.sf.saxon.expr.instruct.Executable)">make</A>, <A HREF="../../../../net/sf/saxon/pattern/Pattern.html#promote(net.sf.saxon.expr.parser.PromotionOffer, net.sf.saxon.expr.Expression)">promote</A>, <A HREF="../../../../net/sf/saxon/pattern/Pattern.html#replaceSubExpression(net.sf.saxon.expr.Expression, net.sf.saxon.expr.Expression)">replaceSubExpression</A>, <A HREF="../../../../net/sf/saxon/pattern/Pattern.html#resolveCurrent(net.sf.saxon.expr.LetExpression, net.sf.saxon.expr.parser.PromotionOffer, boolean)">resolveCurrent</A>, <A HREF="../../../../net/sf/saxon/pattern/Pattern.html#selectNodes(net.sf.saxon.om.DocumentInfo, net.sf.saxon.expr.XPathContext)">selectNodes</A>, <A HREF="../../../../net/sf/saxon/pattern/Pattern.html#setExecutable(net.sf.saxon.expr.instruct.Executable)">setExecutable</A>, <A HREF="../../../../net/sf/saxon/pattern/Pattern.html#setLineNumber(int)">setLineNumber</A>, <A HREF="../../../../net/sf/saxon/pattern/Pattern.html#setOriginalText(java.lang.String)">setOriginalText</A>, <A HREF="../../../../net/sf/saxon/pattern/Pattern.html#setSystemId(java.lang.String)">setSystemId</A>, <A HREF="../../../../net/sf/saxon/pattern/Pattern.html#simplify(net.sf.saxon.expr.parser.ExpressionVisitor)">simplify</A></CODE></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#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 ======== -->
<A NAME="constructor_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
<B>Constructor Detail</B></FONT></TH>
</TR>
</TABLE>
<A NAME="AnchorPattern()"><!-- --></A><H3>
AnchorPattern</H3>
<PRE>
public <B>AnchorPattern</B>()</PRE>
<DL>
</DL>
<!-- ============ METHOD DETAIL ========== -->
<A NAME="method_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<B>Method Detail</B></FONT></TH>
</TR>
</TABLE>
<A NAME="analyze(net.sf.saxon.expr.parser.ExpressionVisitor, net.sf.saxon.expr.parser.ExpressionVisitor.ContextItemType)"><!-- --></A><H3>
analyze</H3>
<PRE>
public <A HREF="../../../../net/sf/saxon/pattern/Pattern.html" title="class in net.sf.saxon.pattern">Pattern</A> <B>analyze</B>(<A HREF="../../../../net/sf/saxon/expr/parser/ExpressionVisitor.html" title="class in net.sf.saxon.expr.parser">ExpressionVisitor</A> visitor,
<A HREF="../../../../net/sf/saxon/expr/parser/ExpressionVisitor.ContextItemType.html" title="class in net.sf.saxon.expr.parser">ExpressionVisitor.ContextItemType</A> contextItemType)
throws <A HREF="../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></PRE>
<DL>
<DD>Type-check the pattern.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../net/sf/saxon/pattern/Pattern.html#analyze(net.sf.saxon.expr.parser.ExpressionVisitor, net.sf.saxon.expr.parser.ExpressionVisitor.ContextItemType)">analyze</A></CODE> in class <CODE><A HREF="../../../../net/sf/saxon/pattern/Pattern.html" title="class in net.sf.saxon.pattern">Pattern</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>visitor</CODE> - the expression visitor<DD><CODE>contextItemType</CODE> - the type of the context item at the point where the pattern
is defined. Set to null if it is known that the context item is undefined.
<DT><B>Returns:</B><DD>the optimised Pattern
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="matchesBeneathAnchor(net.sf.saxon.om.NodeInfo, net.sf.saxon.om.NodeInfo, net.sf.saxon.expr.XPathContext)"><!-- --></A><H3>
matchesBeneathAnchor</H3>
<PRE>
public boolean <B>matchesBeneathAnchor</B>(<A HREF="../../../../net/sf/saxon/om/NodeInfo.html" title="interface in net.sf.saxon.om">NodeInfo</A> node,
<A HREF="../../../../net/sf/saxon/om/NodeInfo.html" title="interface in net.sf.saxon.om">NodeInfo</A> anchor,
<A HREF="../../../../net/sf/saxon/expr/XPathContext.html" title="interface in net.sf.saxon.expr">XPathContext</A> context)
throws <A HREF="../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></PRE>
<DL>
<DD>Determine whether this pattern matches a given Node within the subtree rooted at a given
anchor node. This method is used when the pattern is used for streaming.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../net/sf/saxon/pattern/Pattern.html#matchesBeneathAnchor(net.sf.saxon.om.NodeInfo, net.sf.saxon.om.NodeInfo, net.sf.saxon.expr.XPathContext)">matchesBeneathAnchor</A></CODE> in class <CODE><A HREF="../../../../net/sf/saxon/pattern/Pattern.html" title="class in net.sf.saxon.pattern">Pattern</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>node</CODE> - The NodeInfo representing the Element or other node to be tested against the Pattern<DD><CODE>anchor</CODE> - The anchor node, which must match any AnchorPattern subpattern<DD><CODE>context</CODE> - The dynamic context. Only relevant if the pattern
uses variables, or contains calls on functions such as document() or key().
<DT><B>Returns:</B><DD>true if the node matches the Pattern, false otherwise
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="matches(net.sf.saxon.om.Item, net.sf.saxon.expr.XPathContext)"><!-- --></A><H3>
matches</H3>
<PRE>
public boolean <B>matches</B>(<A HREF="../../../../net/sf/saxon/om/Item.html" title="interface in net.sf.saxon.om">Item</A> item,
<A HREF="../../../../net/sf/saxon/expr/XPathContext.html" title="interface in net.sf.saxon.expr">XPathContext</A> context)
throws <A HREF="../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></PRE>
<DL>
<DD>Determine whether this Pattern matches the given Node. This is the main external interface
for matching patterns: it sets current() to the node being tested
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../net/sf/saxon/pattern/Pattern.html#matches(net.sf.saxon.om.Item, net.sf.saxon.expr.XPathContext)">matches</A></CODE> in class <CODE><A HREF="../../../../net/sf/saxon/pattern/Pattern.html" title="class in net.sf.saxon.pattern">Pattern</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>item</CODE> - The NodeInfo representing the Element or other node to be tested against the Pattern<DD><CODE>context</CODE> - The dynamic context. Only relevant if the pattern
uses variables, or contains calls on functions such as document() or key().
<DT><B>Returns:</B><DD>true if the node matches the Pattern, false otherwise
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="internalMatches(net.sf.saxon.om.NodeInfo, net.sf.saxon.om.NodeInfo, net.sf.saxon.expr.XPathContext)"><!-- --></A><H3>
internalMatches</H3>
<PRE>
protected boolean <B>internalMatches</B>(<A HREF="../../../../net/sf/saxon/om/NodeInfo.html" title="interface in net.sf.saxon.om">NodeInfo</A> node,
<A HREF="../../../../net/sf/saxon/om/NodeInfo.html" title="interface in net.sf.saxon.om">NodeInfo</A> anchor,
<A HREF="../../../../net/sf/saxon/expr/XPathContext.html" title="interface in net.sf.saxon.expr">XPathContext</A> context)
throws <A HREF="../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></PRE>
<DL>
<DD>Determine whether this Pattern matches the given Node. This is an internal interface used
for matching sub-patterns; it does not alter the value of current(). The default implementation
is identical to matches().
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../net/sf/saxon/pattern/Pattern.html#internalMatches(net.sf.saxon.om.NodeInfo, net.sf.saxon.om.NodeInfo, net.sf.saxon.expr.XPathContext)">internalMatches</A></CODE> in class <CODE><A HREF="../../../../net/sf/saxon/pattern/Pattern.html" title="class in net.sf.saxon.pattern">Pattern</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>node</CODE> - The NodeInfo representing the Element or other node to be tested against the Pattern<DD><CODE>anchor</CODE> - <DD><CODE>context</CODE> - The dynamic context. Only relevant if the pattern
uses variables, or contains calls on functions such as document() or key().
<DT><B>Returns:</B><DD>true if the node matches the Pattern, false otherwise
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="getItemType()"><!-- --></A><H3>
getItemType</H3>
<PRE>
public <A HREF="../../../../net/sf/saxon/type/ItemType.html" title="interface in net.sf.saxon.type">ItemType</A> <B>getItemType</B>()</PRE>
<DL>
<DD>Get a NodeTest that all the nodes matching this pattern must satisfy
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../net/sf/saxon/pattern/Pattern.html#getItemType()">getItemType</A></CODE> in class <CODE><A HREF="../../../../net/sf/saxon/pattern/Pattern.html" title="class in net.sf.saxon.pattern">Pattern</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>a NodeTest, as specific as possible, which all the matching nodes satisfy</DL>
</DD>
</DL>
<HR>
<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>toString</B>()</PRE>
<DL>
<DD><B>Description copied from class: <CODE><A HREF="../../../../net/sf/saxon/pattern/Pattern.html#toString()">Pattern</A></CODE></B></DD>
<DD>Get the original pattern text
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../net/sf/saxon/pattern/Pattern.html#toString()">toString</A></CODE> in class <CODE><A HREF="../../../../net/sf/saxon/pattern/Pattern.html" title="class in net.sf.saxon.pattern">Pattern</A></CODE></DL>
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