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JRegexIterator
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<FONT SIZE="-1">
net.sf.saxon.functions.regex</FONT>
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Class JRegexIterator</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.functions.regex.JRegexIterator</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../../net/sf/saxon/functions/regex/RegexIterator.html" title="interface in net.sf.saxon.functions.regex">RegexIterator</A>, <A HREF="../../../../../net/sf/saxon/om/SequenceIterator.html" title="interface in net.sf.saxon.om">SequenceIterator</A></DD>
</DL>
<HR>
<DL>
<DT><PRE>public class <B>JRegexIterator</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><DT>implements <A HREF="../../../../../net/sf/saxon/functions/regex/RegexIterator.html" title="interface in net.sf.saxon.functions.regex">RegexIterator</A></DL>
</PRE>
<P>
Class JRegexIterator - provides an iterator over matched and unmatched substrings.
This implementation of RegexIterator uses the JDK regular expression engine.
<P>
<P>
<HR>
<P>
<!-- ======== NESTED CLASS SUMMARY ======== -->
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<A NAME="nested_classes_inherited_from_class_net.sf.saxon.functions.regex.RegexIterator"><!-- --></A>
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<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Nested classes/interfaces inherited from interface net.sf.saxon.functions.regex.<A HREF="../../../../../net/sf/saxon/functions/regex/RegexIterator.html" title="interface in net.sf.saxon.functions.regex">RegexIterator</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../../net/sf/saxon/functions/regex/RegexIterator.OnGroup.html" title="interface in net.sf.saxon.functions.regex">RegexIterator.OnGroup</A></CODE></TD>
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<A NAME="fields_inherited_from_class_net.sf.saxon.om.SequenceIterator"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TH ALIGN="left"><B>Fields inherited from interface net.sf.saxon.om.<A HREF="../../../../../net/sf/saxon/om/SequenceIterator.html" title="interface in net.sf.saxon.om">SequenceIterator</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../../net/sf/saxon/om/SequenceIterator.html#GROUNDED">GROUNDED</A>, <A HREF="../../../../../net/sf/saxon/om/SequenceIterator.html#LAST_POSITION_FINDER">LAST_POSITION_FINDER</A>, <A HREF="../../../../../net/sf/saxon/om/SequenceIterator.html#LOOKAHEAD">LOOKAHEAD</A></CODE></TD>
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<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../../net/sf/saxon/functions/regex/JRegexIterator.html#JRegexIterator(java.lang.String, java.util.regex.Pattern)">JRegexIterator</A></B>(<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> string,
<A HREF="http://download.oracle.com/javase/6/docs/api/java/util/regex/Pattern.html?is-external=true" title="class or interface in java.util.regex">Pattern</A> pattern)</CODE>
<BR>
Construct a RegexIterator.</TD>
</TR>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../net/sf/saxon/functions/regex/JRegexIterator.html#close()">close</A></B>()</CODE>
<BR>
Close the iterator.</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/functions/regex/JRegexIterator.html#current()">current</A></B>()</CODE>
<BR>
Get the current item in the sequence</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../../net/sf/saxon/om/SequenceIterator.html" title="interface in net.sf.saxon.om">SequenceIterator</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../net/sf/saxon/functions/regex/JRegexIterator.html#getAnother()">getAnother</A></B>()</CODE>
<BR>
Get another iterator over the same items</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../net/sf/saxon/functions/regex/JRegexIterator.html#getProperties()">getProperties</A></B>()</CODE>
<BR>
Get properties of this iterator, as a bit-significant integer.</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/functions/regex/JRegexIterator.html#getRegexGroup(int)">getRegexGroup</A></B>(int number)</CODE>
<BR>
Get a substring that matches a parenthesised group within the regular expression</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../../net/sf/saxon/om/SequenceIterator.html" title="interface in net.sf.saxon.om">SequenceIterator</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../net/sf/saxon/functions/regex/JRegexIterator.html#getRegexGroupIterator()">getRegexGroupIterator</A></B>()</CODE>
<BR>
Get a sequence containing all the regex groups (except group 0, because we want to use indexing from 1).</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/functions/regex/JRegexIterator.html#isMatching()">isMatching</A></B>()</CODE>
<BR>
Determine whether the current item is a matching item or a non-matching item</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/functions/regex/JRegexIterator.html#next()">next</A></B>()</CODE>
<BR>
Get the next item in the sequence</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../net/sf/saxon/functions/regex/JRegexIterator.html#position()">position</A></B>()</CODE>
<BR>
Get the position of the current item in the sequence</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/functions/regex/JRegexIterator.html#processMatchingSubstring(net.sf.saxon.expr.XPathContext, net.sf.saxon.functions.regex.RegexIterator.OnGroup)">processMatchingSubstring</A></B>(<A HREF="../../../../../net/sf/saxon/expr/XPathContext.html" title="interface in net.sf.saxon.expr">XPathContext</A> context,
<A HREF="../../../../../net/sf/saxon/functions/regex/RegexIterator.OnGroup.html" title="interface in net.sf.saxon.functions.regex">RegexIterator.OnGroup</A> action)</CODE>
<BR>
Process a matching substring, performing specified actions at the start and end of each captured
subgroup.</TD>
</TR>
</TABLE>
<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<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>
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<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>
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<P>
<!-- ========= CONSTRUCTOR DETAIL ======== -->
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<A NAME="JRegexIterator(java.lang.String, java.util.regex.Pattern)"><!-- --></A><H3>
JRegexIterator</H3>
<PRE>
public <B>JRegexIterator</B>(<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> string,
<A HREF="http://download.oracle.com/javase/6/docs/api/java/util/regex/Pattern.html?is-external=true" title="class or interface in java.util.regex">Pattern</A> pattern)</PRE>
<DL>
<DD>Construct a RegexIterator. Note that the underlying matcher.find() method is called once
to obtain each matching substring. But the iterator also returns non-matching substrings
if these appear between the matching substrings.
<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>string</CODE> - the string to be analysed<DD><CODE>pattern</CODE> - the regular expression</DL>
</DL>
<!-- ============ METHOD DETAIL ========== -->
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<B>Method Detail</B></FONT></TH>
</TR>
</TABLE>
<A NAME="next()"><!-- --></A><H3>
next</H3>
<PRE>
public <A HREF="../../../../../net/sf/saxon/om/Item.html" title="interface in net.sf.saxon.om">Item</A> <B>next</B>()</PRE>
<DL>
<DD>Get the next item in the sequence
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../net/sf/saxon/om/SequenceIterator.html#next()">next</A></CODE> in interface <CODE><A HREF="../../../../../net/sf/saxon/om/SequenceIterator.html" title="interface in net.sf.saxon.om">SequenceIterator</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the next item in the sequence</DL>
</DD>
</DL>
<HR>
<A NAME="current()"><!-- --></A><H3>
current</H3>
<PRE>
public <A HREF="../../../../../net/sf/saxon/om/Item.html" title="interface in net.sf.saxon.om">Item</A> <B>current</B>()</PRE>
<DL>
<DD>Get the current item in the sequence
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../net/sf/saxon/om/SequenceIterator.html#current()">current</A></CODE> in interface <CODE><A HREF="../../../../../net/sf/saxon/om/SequenceIterator.html" title="interface in net.sf.saxon.om">SequenceIterator</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the item most recently returned by next()</DL>
</DD>
</DL>
<HR>
<A NAME="position()"><!-- --></A><H3>
position</H3>
<PRE>
public int <B>position</B>()</PRE>
<DL>
<DD>Get the position of the current item in the sequence
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../net/sf/saxon/om/SequenceIterator.html#position()">position</A></CODE> in interface <CODE><A HREF="../../../../../net/sf/saxon/om/SequenceIterator.html" title="interface in net.sf.saxon.om">SequenceIterator</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the position of the item most recently returned by next(), starting at 1</DL>
</DD>
</DL>
<HR>
<A NAME="close()"><!-- --></A><H3>
close</H3>
<PRE>
public void <B>close</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../../net/sf/saxon/om/SequenceIterator.html#close()">SequenceIterator</A></CODE></B></DD>
<DD>Close the iterator. This indicates to the supplier of the data that the client
does not require any more items to be delivered by the iterator. This may enable the
supplier to release resources. After calling close(), no further calls on the
iterator should be made; if further calls are made, the effect of such calls is undefined.
<p>(Currently, closing an iterator is important only when the data is being "pushed" in
another thread. Closing the iterator terminates that thread and means that it needs to do
no additional work. Indeed, failing to close the iterator may cause the push thread to hang
waiting for the buffer to be emptied.)</p>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../net/sf/saxon/om/SequenceIterator.html#close()">close</A></CODE> in interface <CODE><A HREF="../../../../../net/sf/saxon/om/SequenceIterator.html" title="interface in net.sf.saxon.om">SequenceIterator</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getAnother()"><!-- --></A><H3>
getAnother</H3>
<PRE>
public <A HREF="../../../../../net/sf/saxon/om/SequenceIterator.html" title="interface in net.sf.saxon.om">SequenceIterator</A> <B>getAnother</B>()</PRE>
<DL>
<DD>Get another iterator over the same items
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../net/sf/saxon/om/SequenceIterator.html#getAnother()">getAnother</A></CODE> in interface <CODE><A HREF="../../../../../net/sf/saxon/om/SequenceIterator.html" title="interface in net.sf.saxon.om">SequenceIterator</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>a new iterator, positioned before the first item</DL>
</DD>
</DL>
<HR>
<A NAME="getProperties()"><!-- --></A><H3>
getProperties</H3>
<PRE>
public int <B>getProperties</B>()</PRE>
<DL>
<DD>Get properties of this iterator, as a bit-significant integer.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../net/sf/saxon/om/SequenceIterator.html#getProperties()">getProperties</A></CODE> in interface <CODE><A HREF="../../../../../net/sf/saxon/om/SequenceIterator.html" title="interface in net.sf.saxon.om">SequenceIterator</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the properties of this iterator. This will be some combination of
properties such as <A HREF="../../../../../net/sf/saxon/om/SequenceIterator.html#GROUNDED"><CODE>SequenceIterator.GROUNDED</CODE></A>, <A HREF="../../../../../net/sf/saxon/om/SequenceIterator.html#LAST_POSITION_FINDER"><CODE>SequenceIterator.LAST_POSITION_FINDER</CODE></A>,
and <A HREF="../../../../../net/sf/saxon/om/SequenceIterator.html#LOOKAHEAD"><CODE>SequenceIterator.LOOKAHEAD</CODE></A>. It is always
acceptable to return the value zero, indicating that there are no known special properties.
It is acceptable for the properties of the iterator to change depending on its state.</DL>
</DD>
</DL>
<HR>
<A NAME="isMatching()"><!-- --></A><H3>
isMatching</H3>
<PRE>
public boolean <B>isMatching</B>()</PRE>
<DL>
<DD>Determine whether the current item is a matching item or a non-matching item
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../net/sf/saxon/functions/regex/RegexIterator.html#isMatching()">isMatching</A></CODE> in interface <CODE><A HREF="../../../../../net/sf/saxon/functions/regex/RegexIterator.html" title="interface in net.sf.saxon.functions.regex">RegexIterator</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>true if the current item (the one most recently returned by next()) is
an item that matches the regular expression, or false if it is an item that
does not match</DL>
</DD>
</DL>
<HR>
<A NAME="getRegexGroup(int)"><!-- --></A><H3>
getRegexGroup</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>getRegexGroup</B>(int number)</PRE>
<DL>
<DD>Get a substring that matches a parenthesised group within the regular expression
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../net/sf/saxon/functions/regex/RegexIterator.html#getRegexGroup(int)">getRegexGroup</A></CODE> in interface <CODE><A HREF="../../../../../net/sf/saxon/functions/regex/RegexIterator.html" title="interface in net.sf.saxon.functions.regex">RegexIterator</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>number</CODE> - the number of the group to be obtained
<DT><B>Returns:</B><DD>the substring of the current item that matches the n'th parenthesized group
within the regular expression</DL>
</DD>
</DL>
<HR>
<A NAME="getRegexGroupIterator()"><!-- --></A><H3>
getRegexGroupIterator</H3>
<PRE>
public <A HREF="../../../../../net/sf/saxon/om/SequenceIterator.html" title="interface in net.sf.saxon.om">SequenceIterator</A> <B>getRegexGroupIterator</B>()</PRE>
<DL>
<DD>Get a sequence containing all the regex groups (except group 0, because we want to use indexing from 1).
This is used by the saxon:analyze-string() higher-order extension function.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../net/sf/saxon/functions/regex/RegexIterator.html#getRegexGroupIterator()">getRegexGroupIterator</A></CODE> in interface <CODE><A HREF="../../../../../net/sf/saxon/functions/regex/RegexIterator.html" title="interface in net.sf.saxon.functions.regex">RegexIterator</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="processMatchingSubstring(net.sf.saxon.expr.XPathContext, net.sf.saxon.functions.regex.RegexIterator.OnGroup)"><!-- --></A><H3>
processMatchingSubstring</H3>
<PRE>
public void <B>processMatchingSubstring</B>(<A HREF="../../../../../net/sf/saxon/expr/XPathContext.html" title="interface in net.sf.saxon.expr">XPathContext</A> context,
<A HREF="../../../../../net/sf/saxon/functions/regex/RegexIterator.OnGroup.html" title="interface in net.sf.saxon.functions.regex">RegexIterator.OnGroup</A> action)
throws <A HREF="../../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></PRE>
<DL>
<DD>Process a matching substring, performing specified actions at the start and end of each captured
subgroup. This method will always be called when operating in "push" mode; it writes its
result to context.getReceiver(). The matching substring text is all written to the receiver,
interspersed with calls to the <A HREF="../../../../../net/sf/saxon/functions/regex/RegexIterator.OnGroup.html" title="interface in net.sf.saxon.functions.regex"><CODE>RegexIterator.OnGroup</CODE></A> methods onGroupStart() and onGroupEnd().
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../net/sf/saxon/functions/regex/RegexIterator.html#processMatchingSubstring(net.sf.saxon.expr.XPathContext, net.sf.saxon.functions.regex.RegexIterator.OnGroup)">processMatchingSubstring</A></CODE> in interface <CODE><A HREF="../../../../../net/sf/saxon/functions/regex/RegexIterator.html" title="interface in net.sf.saxon.functions.regex">RegexIterator</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>context</CODE> - the dynamic evaluation context<DD><CODE>action</CODE> - defines the processing to be performed at the start and end of a group
<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>
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