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ForExpression.EventMappingAction
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net.sf.saxon.expr</FONT>
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Class ForExpression.EventMappingAction</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.expr.ForExpression.EventMappingAction</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../net/sf/saxon/evpull/EventMappingFunction.html" title="interface in net.sf.saxon.evpull">EventMappingFunction</A></DD>
</DL>
<DL>
<DT><B>Enclosing class:</B><DD><A HREF="../../../../net/sf/saxon/expr/ForExpression.html" title="class in net.sf.saxon.expr">ForExpression</A></DD>
</DL>
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<DT><PRE>protected static class <B>ForExpression.EventMappingAction</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/evpull/EventMappingFunction.html" title="interface in net.sf.saxon.evpull">EventMappingFunction</A></DL>
</PRE>
<P>
The EventMappingAction represents the action to be taken for each item in the
source sequence. It acts as the EventMappingFunction for the mapping iterator, and
also provides the Binding of the position variable (at $n) in XQuery, if used.
<P>
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<TD><CODE><B><A HREF="../../../../net/sf/saxon/expr/ForExpression.EventMappingAction.html#ForExpression.EventMappingAction(net.sf.saxon.expr.XPathContext, int, net.sf.saxon.expr.PositionVariable, net.sf.saxon.expr.Expression)">ForExpression.EventMappingAction</A></B>(<A HREF="../../../../net/sf/saxon/expr/XPathContext.html" title="interface in net.sf.saxon.expr">XPathContext</A> context,
int slotNumber,
<A HREF="../../../../net/sf/saxon/expr/PositionVariable.html" title="class in net.sf.saxon.expr">PositionVariable</A> positionBinding,
<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> action)</CODE>
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<CODE> <A HREF="../../../../net/sf/saxon/evpull/EventIterator.html" title="interface in net.sf.saxon.evpull">EventIterator</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/expr/ForExpression.EventMappingAction.html#map(net.sf.saxon.om.Item)">map</A></B>(<A HREF="../../../../net/sf/saxon/om/Item.html" title="interface in net.sf.saxon.om">Item</A> item)</CODE>
<BR>
Map one item to a sequence of pull events.</TD>
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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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<A NAME="ForExpression.EventMappingAction(net.sf.saxon.expr.XPathContext, int, net.sf.saxon.expr.PositionVariable, net.sf.saxon.expr.Expression)"><!-- --></A><H3>
ForExpression.EventMappingAction</H3>
<PRE>
public <B>ForExpression.EventMappingAction</B>(<A HREF="../../../../net/sf/saxon/expr/XPathContext.html" title="interface in net.sf.saxon.expr">XPathContext</A> context,
int slotNumber,
<A HREF="../../../../net/sf/saxon/expr/PositionVariable.html" title="class in net.sf.saxon.expr">PositionVariable</A> positionBinding,
<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> action)</PRE>
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<A NAME="map(net.sf.saxon.om.Item)"><!-- --></A><H3>
map</H3>
<PRE>
public <A HREF="../../../../net/sf/saxon/evpull/EventIterator.html" title="interface in net.sf.saxon.evpull">EventIterator</A> <B>map</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><B>Description copied from interface: <CODE><A HREF="../../../../net/sf/saxon/evpull/EventMappingFunction.html#map(net.sf.saxon.om.Item)">EventMappingFunction</A></CODE></B></DD>
<DD>Map one item to a sequence of pull events.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../net/sf/saxon/evpull/EventMappingFunction.html#map(net.sf.saxon.om.Item)">map</A></CODE> in interface <CODE><A HREF="../../../../net/sf/saxon/evpull/EventMappingFunction.html" title="interface in net.sf.saxon.evpull">EventMappingFunction</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>item</CODE> - The item to be mapped.
<DT><B>Returns:</B><DD>one of the following: (a) an EventIterator over the sequence of items that the supplied input
item maps to, or (b) null if it maps to an 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></DL>
</DD>
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