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saxon-manual-9.4.0.9-2.mga7.noarch.rpm

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Matches
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net.sf.saxon.functions</FONT>
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Class Matches</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/expr/Expression.html" title="class in net.sf.saxon.expr">net.sf.saxon.expr.Expression</A>
      <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../net/sf/saxon/expr/FunctionCall.html" title="class in net.sf.saxon.expr">net.sf.saxon.expr.FunctionCall</A>
          <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../net/sf/saxon/functions/SystemFunction.html" title="class in net.sf.saxon.functions">net.sf.saxon.functions.SystemFunction</A>
              <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>net.sf.saxon.functions.Matches</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/event/LocationProvider.html" title="interface in net.sf.saxon.event">LocationProvider</A>, <A HREF="../../../../net/sf/saxon/event/SaxonLocator.html" title="interface in net.sf.saxon.event">SaxonLocator</A>, <A HREF="../../../../net/sf/saxon/trace/InstructionInfo.html" title="interface in net.sf.saxon.trace">InstructionInfo</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/org/xml/sax/Locator.html?is-external=true" title="class or interface in org.xml.sax">Locator</A></DD>
</DL>
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<DL>
<DT><PRE>public class <B>Matches</B><DT>extends <A HREF="../../../../net/sf/saxon/functions/SystemFunction.html" title="class in net.sf.saxon.functions">SystemFunction</A></DL>
</PRE>

<P>
This class implements the matches() function for regular expression matching
<P>

<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../serialized-form.html#net.sf.saxon.functions.Matches">Serialized Form</A></DL>
<HR>

<P>
<!-- =========== FIELD SUMMARY =========== -->

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<B>Field Summary</B></FONT></TH>
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&nbsp;<A NAME="fields_inherited_from_class_net.sf.saxon.functions.SystemFunction"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TH ALIGN="left"><B>Fields inherited from class net.sf.saxon.functions.<A HREF="../../../../net/sf/saxon/functions/SystemFunction.html" title="class in net.sf.saxon.functions">SystemFunction</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../net/sf/saxon/functions/SystemFunction.html#operation">operation</A></CODE></TD>
</TR>
</TABLE>
&nbsp;<A NAME="fields_inherited_from_class_net.sf.saxon.expr.FunctionCall"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Fields inherited from class net.sf.saxon.expr.<A HREF="../../../../net/sf/saxon/expr/FunctionCall.html" title="class in net.sf.saxon.expr">FunctionCall</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../net/sf/saxon/expr/FunctionCall.html#argument">argument</A></CODE></TD>
</TR>
</TABLE>
&nbsp;<A NAME="fields_inherited_from_class_net.sf.saxon.expr.Expression"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Fields inherited from class net.sf.saxon.expr.<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../net/sf/saxon/expr/Expression.html#EFFECTIVE_BOOLEAN_VALUE">EFFECTIVE_BOOLEAN_VALUE</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#EVALUATE_METHOD">EVALUATE_METHOD</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#EVENT_FEED_METHOD">EVENT_FEED_METHOD</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#ITEM_FEED_METHOD">ITEM_FEED_METHOD</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#ITERATE_METHOD">ITERATE_METHOD</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#locationId">locationId</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#MAX_SEQUENCE_LENGTH">MAX_SEQUENCE_LENGTH</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#MAX_STRING_LENGTH">MAX_STRING_LENGTH</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#PROCESS_METHOD">PROCESS_METHOD</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#PUSH_SELECTION">PUSH_SELECTION</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#staticProperties">staticProperties</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#UNBOUNDED_LOWER">UNBOUNDED_LOWER</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#UNBOUNDED_UPPER">UNBOUNDED_UPPER</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#WATCH_METHOD">WATCH_METHOD</A></CODE></TD>
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<!-- ======== 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/functions/Matches.html#Matches()">Matches</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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&nbsp;
<!-- ========== METHOD SUMMARY =========== -->

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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/functions/Matches.html#evalMatches(net.sf.saxon.value.AtomicValue, net.sf.saxon.value.AtomicValue, java.lang.CharSequence, net.sf.saxon.expr.XPathContext)">evalMatches</A></B>(<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&nbsp;input,
            <A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&nbsp;regex,
            <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/CharSequence.html?is-external=true" title="class or interface in java.lang">CharSequence</A>&nbsp;flags,
            <A HREF="../../../../net/sf/saxon/expr/XPathContext.html" title="interface in net.sf.saxon.expr">XPathContext</A>&nbsp;context)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Interface used by compiled bytecode</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<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/functions/Matches.html#evaluateItem(net.sf.saxon.expr.XPathContext)">evaluateItem</A></B>(<A HREF="../../../../net/sf/saxon/expr/XPathContext.html" title="interface in net.sf.saxon.expr">XPathContext</A>&nbsp;c)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Evaluate the matches() function to give a Boolean value.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../net/sf/saxon/functions/regex/RegularExpression.html" title="interface in net.sf.saxon.functions.regex">RegularExpression</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/functions/Matches.html#getCompiledRegularExpression()">getCompiledRegularExpression</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the compiled regular expression, returning null if the regex has not been compiled</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/functions/Matches.html#optimize(net.sf.saxon.expr.parser.ExpressionVisitor, net.sf.saxon.expr.parser.ExpressionVisitor.ContextItemType)">optimize</A></B>(<A HREF="../../../../net/sf/saxon/expr/parser/ExpressionVisitor.html" title="class in net.sf.saxon.expr.parser">ExpressionVisitor</A>&nbsp;visitor,
         <A HREF="../../../../net/sf/saxon/expr/parser/ExpressionVisitor.ContextItemType.html" title="class in net.sf.saxon.expr.parser">ExpressionVisitor.ContextItemType</A>&nbsp;contextItemType)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Perform optimisation of an expression and its subexpressions.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/functions/Matches.html#simplify(net.sf.saxon.expr.parser.ExpressionVisitor)">simplify</A></B>(<A HREF="../../../../net/sf/saxon/expr/parser/ExpressionVisitor.html" title="class in net.sf.saxon.expr.parser">ExpressionVisitor</A>&nbsp;visitor)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Simplify and validate.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;<A HREF="../../../../net/sf/saxon/functions/regex/RegularExpression.html" title="interface in net.sf.saxon.functions.regex">RegularExpression</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/functions/Matches.html#tryToCompile(net.sf.saxon.expr.Expression[], int, int, net.sf.saxon.expr.StaticContext)">tryToCompile</A></B>(<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A>[]&nbsp;args,
             int&nbsp;patternArg,
             int&nbsp;flagsArg,
             <A HREF="../../../../net/sf/saxon/expr/StaticContext.html" title="interface in net.sf.saxon.expr">StaticContext</A>&nbsp;env)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Try to precompile the arguments to the function.</TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_net.sf.saxon.functions.SystemFunction"><!-- --></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.functions.<A HREF="../../../../net/sf/saxon/functions/SystemFunction.html" title="class in net.sf.saxon.functions">SystemFunction</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../net/sf/saxon/functions/SystemFunction.html#addContextDocumentArgument(int, java.lang.String)">addContextDocumentArgument</A>, <A HREF="../../../../net/sf/saxon/functions/SystemFunction.html#addDocToPathMap(net.sf.saxon.expr.parser.PathMap, net.sf.saxon.expr.parser.PathMap.PathMapNodeSet)">addDocToPathMap</A>, <A HREF="../../../../net/sf/saxon/functions/SystemFunction.html#checkArguments(net.sf.saxon.expr.parser.ExpressionVisitor)">checkArguments</A>, <A HREF="../../../../net/sf/saxon/functions/SystemFunction.html#computeCardinality()">computeCardinality</A>, <A HREF="../../../../net/sf/saxon/functions/SystemFunction.html#computeSpecialProperties()">computeSpecialProperties</A>, <A HREF="../../../../net/sf/saxon/functions/SystemFunction.html#copy()">copy</A>, <A HREF="../../../../net/sf/saxon/functions/SystemFunction.html#equals(java.lang.Object)">equals</A>, <A HREF="../../../../net/sf/saxon/functions/SystemFunction.html#getDetails()">getDetails</A>, <A HREF="../../../../net/sf/saxon/functions/SystemFunction.html#getErrorCodeForTypeErrors()">getErrorCodeForTypeErrors</A>, <A HREF="../../../../net/sf/saxon/functions/SystemFunction.html#getImplementationMethod()">getImplementationMethod</A>, <A HREF="../../../../net/sf/saxon/functions/SystemFunction.html#getItemType(net.sf.saxon.type.TypeHierarchy)">getItemType</A>, <A HREF="../../../../net/sf/saxon/functions/SystemFunction.html#getOperation()">getOperation</A>, <A HREF="../../../../net/sf/saxon/functions/SystemFunction.html#getRequiredType(int)">getRequiredType</A>, <A HREF="../../../../net/sf/saxon/functions/SystemFunction.html#makeSystemFunction(java.lang.String, net.sf.saxon.expr.Expression[])">makeSystemFunction</A>, <A HREF="../../../../net/sf/saxon/functions/SystemFunction.html#setDetails(net.sf.saxon.functions.StandardFunction.Entry)">setDetails</A>, <A HREF="../../../../net/sf/saxon/functions/SystemFunction.html#useContextItemAsDefault(net.sf.saxon.expr.parser.ExpressionVisitor)">useContextItemAsDefault</A></CODE></TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_net.sf.saxon.expr.FunctionCall"><!-- --></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.expr.<A HREF="../../../../net/sf/saxon/expr/FunctionCall.html" title="class in net.sf.saxon.expr">FunctionCall</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../net/sf/saxon/expr/FunctionCall.html#addExternalFunctionCallToPathMap(net.sf.saxon.expr.parser.PathMap, net.sf.saxon.expr.parser.PathMap.PathMapNodeSet)">addExternalFunctionCallToPathMap</A>, <A HREF="../../../../net/sf/saxon/expr/FunctionCall.html#checkArgumentCount(int, int)">checkArgumentCount</A>, <A HREF="../../../../net/sf/saxon/expr/FunctionCall.html#explain(net.sf.saxon.trace.ExpressionPresenter)">explain</A>, <A HREF="../../../../net/sf/saxon/expr/FunctionCall.html#getArguments()">getArguments</A>, <A HREF="../../../../net/sf/saxon/expr/FunctionCall.html#getDisplayName()">getDisplayName</A>, <A HREF="../../../../net/sf/saxon/expr/FunctionCall.html#getExpressionName()">getExpressionName</A>, <A HREF="../../../../net/sf/saxon/expr/FunctionCall.html#getFunctionName()">getFunctionName</A>, <A HREF="../../../../net/sf/saxon/expr/FunctionCall.html#getNumberOfArguments()">getNumberOfArguments</A>, <A HREF="../../../../net/sf/saxon/expr/FunctionCall.html#hashCode()">hashCode</A>, <A HREF="../../../../net/sf/saxon/expr/FunctionCall.html#iterateSubExpressions()">iterateSubExpressions</A>, <A HREF="../../../../net/sf/saxon/expr/FunctionCall.html#preEvaluate(net.sf.saxon.expr.parser.ExpressionVisitor)">preEvaluate</A>, <A HREF="../../../../net/sf/saxon/expr/FunctionCall.html#promote(net.sf.saxon.expr.parser.PromotionOffer, net.sf.saxon.expr.Expression)">promote</A>, <A HREF="../../../../net/sf/saxon/expr/FunctionCall.html#replaceSubExpression(net.sf.saxon.expr.Expression, net.sf.saxon.expr.Expression)">replaceSubExpression</A>, <A HREF="../../../../net/sf/saxon/expr/FunctionCall.html#setArguments(net.sf.saxon.expr.Expression[])">setArguments</A>, <A HREF="../../../../net/sf/saxon/expr/FunctionCall.html#setFunctionName(net.sf.saxon.om.StructuredQName)">setFunctionName</A>, <A HREF="../../../../net/sf/saxon/expr/FunctionCall.html#simplifyArguments(net.sf.saxon.expr.parser.ExpressionVisitor)">simplifyArguments</A>, <A HREF="../../../../net/sf/saxon/expr/FunctionCall.html#toString()">toString</A>, <A HREF="../../../../net/sf/saxon/expr/FunctionCall.html#typeCheck(net.sf.saxon.expr.parser.ExpressionVisitor, net.sf.saxon.expr.parser.ExpressionVisitor.ContextItemType)">typeCheck</A></CODE></TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_net.sf.saxon.expr.Expression"><!-- --></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.expr.<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../net/sf/saxon/expr/Expression.html#addToPathMap(net.sf.saxon.expr.parser.PathMap, net.sf.saxon.expr.parser.PathMap.PathMapNodeSet)">addToPathMap</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#adoptChildExpression(net.sf.saxon.expr.Expression)">adoptChildExpression</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#checkForUpdatingSubexpressions()">checkForUpdatingSubexpressions</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#checkPermittedContents(net.sf.saxon.type.SchemaType, net.sf.saxon.expr.StaticContext, boolean)">checkPermittedContents</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#computeDependencies()">computeDependencies</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#computeStaticProperties()">computeStaticProperties</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#doPromotion(net.sf.saxon.expr.Expression, net.sf.saxon.expr.parser.PromotionOffer)">doPromotion</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#dynamicError(java.lang.String, java.lang.String, net.sf.saxon.expr.XPathContext)">dynamicError</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#effectiveBooleanValue(net.sf.saxon.expr.XPathContext)">effectiveBooleanValue</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#evaluateAsString(net.sf.saxon.expr.XPathContext)">evaluateAsString</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#evaluatePendingUpdates(net.sf.saxon.expr.XPathContext, net.sf.saxon.expr.PendingUpdateList)">evaluatePendingUpdates</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#explain(java.io.OutputStream)">explain</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#getCardinality()">getCardinality</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#getColumnNumber()">getColumnNumber</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#getColumnNumber(long)">getColumnNumber</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#getConstructType()">getConstructType</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#getContainer()">getContainer</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#getDependencies()">getDependencies</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#getEvaluationMethod()">getEvaluationMethod</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#getExecutable()">getExecutable</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#getHostLanguage()">getHostLanguage</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#getIntegerBounds()">getIntegerBounds</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#getIntrinsicDependencies()">getIntrinsicDependencies</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#getLineNumber()">getLineNumber</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#getLineNumber(long)">getLineNumber</A>, <A 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HREF="../../../../net/sf/saxon/expr/Expression.html#iterateSameFocusSubExpressions()">iterateSameFocusSubExpressions</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#markTailFunctionCalls(net.sf.saxon.om.StructuredQName, int)">markTailFunctionCalls</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#process(net.sf.saxon.expr.XPathContext)">process</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#resetLocalStaticProperties()">resetLocalStaticProperties</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#setContainer(net.sf.saxon.expr.Container)">setContainer</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#setEvaluationMethod(int)">setEvaluationMethod</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#setFiltered(boolean)">setFiltered</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#setFlattened(boolean)">setFlattened</A>, <A HREF="../../../../net/sf/saxon/expr/Expression.html#setLocationId(int)">setLocationId</A>, <A 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<A NAME="Matches()"><!-- --></A><H3>
Matches</H3>
<PRE>
public <B>Matches</B>()</PRE>
<DL>
</DL>

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<A NAME="simplify(net.sf.saxon.expr.parser.ExpressionVisitor)"><!-- --></A><H3>
simplify</H3>
<PRE>
public <A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> <B>simplify</B>(<A HREF="../../../../net/sf/saxon/expr/parser/ExpressionVisitor.html" title="class in net.sf.saxon.expr.parser">ExpressionVisitor</A>&nbsp;visitor)
                    throws <A HREF="../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></PRE>
<DL>
<DD>Simplify and validate.
 This is a pure function so it can be simplified in advance if the arguments are known
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../net/sf/saxon/expr/FunctionCall.html#simplify(net.sf.saxon.expr.parser.ExpressionVisitor)">simplify</A></CODE> in class <CODE><A HREF="../../../../net/sf/saxon/expr/FunctionCall.html" title="class in net.sf.saxon.expr">FunctionCall</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>visitor</CODE> - an expression visitor
<DT><B>Returns:</B><DD>the simplified expression
<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 any error is found (e.g. invalid regular expression)</DL>
</DD>
</DL>
<HR>

<A NAME="optimize(net.sf.saxon.expr.parser.ExpressionVisitor, net.sf.saxon.expr.parser.ExpressionVisitor.ContextItemType)"><!-- --></A><H3>
optimize</H3>
<PRE>
public <A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> <B>optimize</B>(<A HREF="../../../../net/sf/saxon/expr/parser/ExpressionVisitor.html" title="class in net.sf.saxon.expr.parser">ExpressionVisitor</A>&nbsp;visitor,
                           <A HREF="../../../../net/sf/saxon/expr/parser/ExpressionVisitor.ContextItemType.html" title="class in net.sf.saxon.expr.parser">ExpressionVisitor.ContextItemType</A>&nbsp;contextItemType)
                    throws <A HREF="../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></PRE>
<DL>
<DD>Perform optimisation of an expression and its subexpressions.
 <p/>
 <p>This method is called after all references to functions and variables have been resolved
 to the declaration of the function or variable, and after all type checking has been done.</p>
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../net/sf/saxon/functions/SystemFunction.html#optimize(net.sf.saxon.expr.parser.ExpressionVisitor, net.sf.saxon.expr.parser.ExpressionVisitor.ContextItemType)">optimize</A></CODE> in class <CODE><A HREF="../../../../net/sf/saxon/functions/SystemFunction.html" title="class in net.sf.saxon.functions">SystemFunction</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>visitor</CODE> - an expression visitor<DD><CODE>contextItemType</CODE> - the static type of "." at the point where this expression is invoked.
                        The parameter is set to null if it is known statically that the context item will be undefined.
                        If the type of the context item is not known statically, the argument is set to
                        <A HREF="../../../../net/sf/saxon/type/Type.html#ITEM_TYPE"><CODE>Type.ITEM_TYPE</CODE></A>
<DT><B>Returns:</B><DD>the original expression, rewritten if appropriate to optimize execution
<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 an error is discovered during this phase
          (typically a type error)</DL>
</DD>
</DL>
<HR>

<A NAME="getCompiledRegularExpression()"><!-- --></A><H3>
getCompiledRegularExpression</H3>
<PRE>
public <A HREF="../../../../net/sf/saxon/functions/regex/RegularExpression.html" title="interface in net.sf.saxon.functions.regex">RegularExpression</A> <B>getCompiledRegularExpression</B>()</PRE>
<DL>
<DD>Get the compiled regular expression, returning null if the regex has not been compiled
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the compiled regular expression, or null</DL>
</DD>
</DL>
<HR>

<A NAME="evaluateItem(net.sf.saxon.expr.XPathContext)"><!-- --></A><H3>
evaluateItem</H3>
<PRE>
public <A HREF="../../../../net/sf/saxon/om/Item.html" title="interface in net.sf.saxon.om">Item</A> <B>evaluateItem</B>(<A HREF="../../../../net/sf/saxon/expr/XPathContext.html" title="interface in net.sf.saxon.expr">XPathContext</A>&nbsp;c)
                  throws <A HREF="../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></PRE>
<DL>
<DD>Evaluate the matches() function to give a Boolean value.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../net/sf/saxon/expr/Expression.html#evaluateItem(net.sf.saxon.expr.XPathContext)">evaluateItem</A></CODE> in class <CODE><A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>c</CODE> - The dynamic evaluation context
<DT><B>Returns:</B><DD>the result as a BooleanValue, or null to indicate the empty sequence
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></CODE> - on an error</DL>
</DD>
</DL>
<HR>

<A NAME="evalMatches(net.sf.saxon.value.AtomicValue, net.sf.saxon.value.AtomicValue, java.lang.CharSequence, net.sf.saxon.expr.XPathContext)"><!-- --></A><H3>
evalMatches</H3>
<PRE>
public boolean <B>evalMatches</B>(<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&nbsp;input,
                           <A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&nbsp;regex,
                           <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/CharSequence.html?is-external=true" title="class or interface in java.lang">CharSequence</A>&nbsp;flags,
                           <A HREF="../../../../net/sf/saxon/expr/XPathContext.html" title="interface in net.sf.saxon.expr">XPathContext</A>&nbsp;context)
                    throws <A HREF="../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></PRE>
<DL>
<DD>Interface used by compiled bytecode
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>input</CODE> - the value to be tested<DD><CODE>regex</CODE> - the regular expression<DD><CODE>flags</CODE> - the flags<DD><CODE>context</CODE> - the dynamic context
<DT><B>Returns:</B><DD>true if the string matches the regex
<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="tryToCompile(net.sf.saxon.expr.Expression[], int, int, net.sf.saxon.expr.StaticContext)"><!-- --></A><H3>
tryToCompile</H3>
<PRE>
public static <A HREF="../../../../net/sf/saxon/functions/regex/RegularExpression.html" title="interface in net.sf.saxon.functions.regex">RegularExpression</A> <B>tryToCompile</B>(<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A>[]&nbsp;args,
                                             int&nbsp;patternArg,
                                             int&nbsp;flagsArg,
                                             <A HREF="../../../../net/sf/saxon/expr/StaticContext.html" title="interface in net.sf.saxon.expr">StaticContext</A>&nbsp;env)
                                      throws <A HREF="../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></PRE>
<DL>
<DD>Try to precompile the arguments to the function. This method is shared by
 the implementations of the three XPath functions matches(), replace(), and
 tokenize().
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>args</CODE> - the supplied arguments to the function, as an array<DD><CODE>patternArg</CODE> - the position of the argument containing the regular expression<DD><CODE>flagsArg</CODE> - the position of the argument containing the flags<DD><CODE>env</CODE> - the static context
<DT><B>Returns:</B><DD>the compiled regular expression, or null indicating that the information
 is not available statically so it cannot be precompiled
<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 any failure occurs, in particular, if the regular
 expression is invalid</DL>
</DD>
</DL>
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