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: Class NodeSetValue
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SUMMARY: INNER | <A HREF="#fields_inherited_from_class_com.icl.saxon.expr.Value">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD>
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com.icl.saxon.expr</FONT>
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Class NodeSetValue</H2>
<PRE>
java.lang.Object
|
+--<A HREF="../../../../com/icl/saxon/expr/Expression.html">com.icl.saxon.expr.Expression</A>
|
+--<A HREF="../../../../com/icl/saxon/expr/Value.html">com.icl.saxon.expr.Value</A>
|
+--<B>com.icl.saxon.expr.NodeSetValue</B>
</PRE>
<DL>
<DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../com/icl/saxon/expr/EmptyNodeSet.html">EmptyNodeSet</A>, <A HREF="../../../../com/icl/saxon/expr/NodeSetExtent.html">NodeSetExtent</A>, <A HREF="../../../../com/icl/saxon/expr/NodeSetIntent.html">NodeSetIntent</A>, <A HREF="../../../../com/icl/saxon/expr/SingletonNodeSet.html">SingletonNodeSet</A></DD>
</DL>
<HR>
<DL>
<DT>public abstract class <B>NodeSetValue</B><DT>extends <A HREF="../../../../com/icl/saxon/expr/Value.html">Value</A></DL>
<P>
A node-set value. We use this both for node-sets and node-lists. The node set will only
be sorted into document order when requested (using sort() or evaluate()). This is an abstract
class with a number of concrete implementations including NodeSetExtent (for extensional node-sets)
and NodeSetIntent (for intensional node-sets).
<P>
<HR>
<P>
<!-- ======== INNER CLASS SUMMARY ======== -->
<!-- =========== FIELD SUMMARY =========== -->
<A NAME="fields_inherited_from_class_com.icl.saxon.expr.Value"><!-- --></A>
<TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Fields inherited from class com.icl.saxon.expr.<A HREF="../../../../com/icl/saxon/expr/Value.html">Value</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../com/icl/saxon/expr/Value.html#ANY">ANY</A>, <A HREF="../../../../com/icl/saxon/expr/Value.html#BOOLEAN">BOOLEAN</A>, <A HREF="../../../../com/icl/saxon/expr/Value.html#NODESET">NODESET</A>, <A HREF="../../../../com/icl/saxon/expr/Value.html#NUMBER">NUMBER</A>, <A HREF="../../../../com/icl/saxon/expr/Value.html#OBJECT">OBJECT</A>, <A HREF="../../../../com/icl/saxon/expr/Value.html#STRING">STRING</A></CODE></TD>
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</TABLE>
<A NAME="fields_inherited_from_class_com.icl.saxon.expr.Expression"><!-- --></A>
<TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Fields inherited from class com.icl.saxon.expr.<A HREF="../../../../com/icl/saxon/expr/Expression.html">Expression</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../com/icl/saxon/expr/Expression.html#staticContext">staticContext</A></CODE></TD>
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<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<B>Constructor Summary</B></FONT></TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../com/icl/saxon/expr/NodeSetValue.html#NodeSetValue()">NodeSetValue</A></B>()</CODE>
<BR>
</TD>
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<!-- ========== METHOD SUMMARY =========== -->
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/icl/saxon/expr/NodeSetValue.html#asBoolean()">asBoolean</A></B>()</CODE>
<BR>
Evaluate as a boolean.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/icl/saxon/expr/NodeSetValue.html#asNumber()">asNumber</A></B>()</CODE>
<BR>
Evaluate as a number.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/icl/saxon/expr/NodeSetValue.html#asString()">asString</A></B>()</CODE>
<BR>
Convert to string value</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="../../../../com/icl/saxon/expr/NodeSetValue.html#compare(int, com.icl.saxon.expr.Value)">compare</A></B>(int operator,
<A HREF="../../../../com/icl/saxon/expr/Value.html">Value</A> other)</CODE>
<BR>
Test how a nodeset compares to another Value under a relational comparison</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="../../../../com/icl/saxon/expr/NodeSetValue.html#conversionPreference(java.lang.Class)">conversionPreference</A></B>(java.lang.Class required)</CODE>
<BR>
Get conversion preference for this value to a Java class.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.lang.Object</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/icl/saxon/expr/NodeSetValue.html#convertToJava(java.lang.Class)">convertToJava</A></B>(java.lang.Class target)</CODE>
<BR>
Convert to Java object (for passing to external functions)</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="../../../../com/icl/saxon/expr/NodeSetValue.html#display(int)">display</A></B>(int level)</CODE>
<BR>
Diagnostic print of expression structure</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract <A HREF="../../../../com/icl/saxon/om/NodeEnumeration.html">NodeEnumeration</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/icl/saxon/expr/NodeSetValue.html#enumerate()">enumerate</A></B>()</CODE>
<BR>
Return an enumeration of this nodeset value.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../com/icl/saxon/om/NodeEnumeration.html">NodeEnumeration</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/icl/saxon/expr/NodeSetValue.html#enumerate(com.icl.saxon.Context, boolean)">enumerate</A></B>(<A HREF="../../../../com/icl/saxon/Context.html">Context</A> c,
boolean sorted)</CODE>
<BR>
Return an enumeration of this nodeset value.</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="../../../../com/icl/saxon/expr/NodeSetValue.html#equals(com.icl.saxon.expr.Value)">equals</A></B>(<A HREF="../../../../com/icl/saxon/expr/Value.html">Value</A> other)</CODE>
<BR>
Test whether a nodeset "equals" another Value</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../com/icl/saxon/expr/Value.html">Value</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/icl/saxon/expr/NodeSetValue.html#evaluate(com.icl.saxon.Context)">evaluate</A></B>(<A HREF="../../../../com/icl/saxon/Context.html">Context</A> context)</CODE>
<BR>
Evaluate the Node Set.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../com/icl/saxon/expr/NodeSetValue.html">NodeSetValue</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/icl/saxon/expr/NodeSetValue.html#evaluateAsNodeSet(com.icl.saxon.Context)">evaluateAsNodeSet</A></B>(<A HREF="../../../../com/icl/saxon/Context.html">Context</A> context)</CODE>
<BR>
Evaluate an expression as a NodeSet.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/icl/saxon/expr/NodeSetValue.html#getCount()">getCount</A></B>()</CODE>
<BR>
Count the nodes in the node-set.</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="../../../../com/icl/saxon/expr/NodeSetValue.html#getDataType()">getDataType</A></B>()</CODE>
<BR>
Determine the data type of the expression</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract <A HREF="../../../../com/icl/saxon/om/NodeInfo.html">NodeInfo</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/icl/saxon/expr/NodeSetValue.html#getFirst()">getFirst</A></B>()</CODE>
<BR>
Get the first node in the nodeset (in document order)</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/icl/saxon/expr/NodeSetValue.html#isSorted()">isSorted</A></B>()</CODE>
<BR>
Test whether the value is known to be sorted</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="../../../../com/icl/saxon/expr/NodeSetValue.html#notEquals(com.icl.saxon.expr.Value)">notEquals</A></B>(<A HREF="../../../../com/icl/saxon/expr/Value.html">Value</A> other)</CODE>
<BR>
Test whether a nodeset "not-equals" another Value</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/icl/saxon/expr/NodeSetValue.html#setSorted(boolean)">setSorted</A></B>(boolean isSorted)</CODE>
<BR>
Set a flag to indicate whether the nodes are sorted.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract <A HREF="../../../../com/icl/saxon/expr/NodeSetValue.html">NodeSetValue</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/icl/saxon/expr/NodeSetValue.html#sort()">sort</A></B>()</CODE>
<BR>
Sort the nodes into document order.</TD>
</TR>
</TABLE>
<A NAME="methods_inherited_from_class_com.icl.saxon.expr.Value"><!-- --></A>
<TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class com.icl.saxon.expr.<A HREF="../../../../com/icl/saxon/expr/Value.html">Value</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../com/icl/saxon/expr/Value.html#getDependencies()">getDependencies</A>, <A HREF="../../../../com/icl/saxon/expr/Value.html#inverse(int)">inverse</A>, <A HREF="../../../../com/icl/saxon/expr/Value.html#numericCompare(int, double, double)">numericCompare</A>, <A HREF="../../../../com/icl/saxon/expr/Value.html#reduce(int, com.icl.saxon.Context)">reduce</A>, <A HREF="../../../../com/icl/saxon/expr/Value.html#simplify()">simplify</A>, <A HREF="../../../../com/icl/saxon/expr/Value.html#stringToNumber(java.lang.String)">stringToNumber</A></CODE></TD>
</TR>
</TABLE>
<A NAME="methods_inherited_from_class_com.icl.saxon.expr.Expression"><!-- --></A>
<TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class com.icl.saxon.expr.<A HREF="../../../../com/icl/saxon/expr/Expression.html">Expression</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../com/icl/saxon/expr/Expression.html#containsReferences()">containsReferences</A>, <A HREF="../../../../com/icl/saxon/expr/Expression.html#evaluateAsBoolean(com.icl.saxon.Context)">evaluateAsBoolean</A>, <A HREF="../../../../com/icl/saxon/expr/Expression.html#evaluateAsNumber(com.icl.saxon.Context)">evaluateAsNumber</A>, <A HREF="../../../../com/icl/saxon/expr/Expression.html#evaluateAsString(com.icl.saxon.Context)">evaluateAsString</A>, <A HREF="../../../../com/icl/saxon/expr/Expression.html#getStaticContext()">getStaticContext</A>, <A HREF="../../../../com/icl/saxon/expr/Expression.html#indent(int)">indent</A>, <A HREF="../../../../com/icl/saxon/expr/Expression.html#isContextDocumentNodeSet()">isContextDocumentNodeSet</A>, <A HREF="../../../../com/icl/saxon/expr/Expression.html#make(java.lang.String, com.icl.saxon.expr.StaticContext)">make</A>, <A HREF="../../../../com/icl/saxon/expr/Expression.html#outputStringValue(com.icl.saxon.output.Outputter, com.icl.saxon.Context)">outputStringValue</A>, <A HREF="../../../../com/icl/saxon/expr/Expression.html#setStaticContext(com.icl.saxon.expr.StaticContext)">setStaticContext</A>, <A HREF="../../../../com/icl/saxon/expr/Expression.html#usesCurrent()">usesCurrent</A></CODE></TD>
</TR>
</TABLE>
<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class java.lang.Object</B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
</TR>
</TABLE>
<P>
<!-- ============ FIELD DETAIL =========== -->
<!-- ========= CONSTRUCTOR DETAIL ======== -->
<A NAME="constructor_detail"><!-- --></A>
<TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
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<B>Constructor Detail</B></FONT></TD>
</TR>
</TABLE>
<A NAME="NodeSetValue()"><!-- --></A><H3>
NodeSetValue</H3>
<PRE>
public <B>NodeSetValue</B>()</PRE>
<DL>
</DL>
<!-- ============ METHOD DETAIL ========== -->
<A NAME="method_detail"><!-- --></A>
<TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
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<B>Method Detail</B></FONT></TD>
</TR>
</TABLE>
<A NAME="getDataType()"><!-- --></A><H3>
getDataType</H3>
<PRE>
public int <B>getDataType</B>()</PRE>
<DL>
<DD>Determine the data type of the expression<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../com/icl/saxon/expr/Expression.html#getDataType()">getDataType</A></CODE> in class <CODE><A HREF="../../../../com/icl/saxon/expr/Expression.html">Expression</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>Value.NODESET</DL>
</DD>
</DL>
<HR>
<A NAME="evaluate(com.icl.saxon.Context)"><!-- --></A><H3>
evaluate</H3>
<PRE>
public <A HREF="../../../../com/icl/saxon/expr/Value.html">Value</A> <B>evaluate</B>(<A HREF="../../../../com/icl/saxon/Context.html">Context</A> context)
throws <A HREF="../../../../com/icl/saxon/expr/XPathException.html">XPathException</A></PRE>
<DL>
<DD>Evaluate the Node Set. This guarantees to return the result in sorted order.<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../com/icl/saxon/expr/Value.html#evaluate(com.icl.saxon.Context)">evaluate</A></CODE> in class <CODE><A HREF="../../../../com/icl/saxon/expr/Value.html">Value</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>context</CODE> - The context for evaluation (not used)</DL>
</DD>
</DL>
<HR>
<A NAME="evaluateAsNodeSet(com.icl.saxon.Context)"><!-- --></A><H3>
evaluateAsNodeSet</H3>
<PRE>
public <A HREF="../../../../com/icl/saxon/expr/NodeSetValue.html">NodeSetValue</A> <B>evaluateAsNodeSet</B>(<A HREF="../../../../com/icl/saxon/Context.html">Context</A> context)
throws <A HREF="../../../../com/icl/saxon/expr/XPathException.html">XPathException</A></PRE>
<DL>
<DD>Evaluate an expression as a NodeSet.<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../com/icl/saxon/expr/Expression.html#evaluateAsNodeSet(com.icl.saxon.Context)">evaluateAsNodeSet</A></CODE> in class <CODE><A HREF="../../../../com/icl/saxon/expr/Expression.html">Expression</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>context</CODE> - The context in which the expression is to be evaluated<DT><B>Returns:</B><DD>the value of the expression, evaluated in the current context</DL>
</DD>
</DL>
<HR>
<A NAME="enumerate()"><!-- --></A><H3>
enumerate</H3>
<PRE>
public abstract <A HREF="../../../../com/icl/saxon/om/NodeEnumeration.html">NodeEnumeration</A> <B>enumerate</B>()
throws <A HREF="../../../../com/icl/saxon/expr/XPathException.html">XPathException</A></PRE>
<DL>
<DD>Return an enumeration of this nodeset value. Unless sort() has been called
the nodes can be in any order.</DL>
<HR>
<A NAME="enumerate(com.icl.saxon.Context, boolean)"><!-- --></A><H3>
enumerate</H3>
<PRE>
public <A HREF="../../../../com/icl/saxon/om/NodeEnumeration.html">NodeEnumeration</A> <B>enumerate</B>(<A HREF="../../../../com/icl/saxon/Context.html">Context</A> c,
boolean sorted)
throws <A HREF="../../../../com/icl/saxon/expr/XPathException.html">XPathException</A></PRE>
<DL>
<DD>Return an enumeration of this nodeset value. This is to satisfy the interface for
Expression.<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../com/icl/saxon/expr/Expression.html#enumerate(com.icl.saxon.Context, boolean)">enumerate</A></CODE> in class <CODE><A HREF="../../../../com/icl/saxon/expr/Expression.html">Expression</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>context</CODE> - The context is ignored.<DD><CODE>sorted</CODE> - Indicates that the result must be in document order</DL>
</DD>
</DL>
<HR>
<A NAME="setSorted(boolean)"><!-- --></A><H3>
setSorted</H3>
<PRE>
public abstract void <B>setSorted</B>(boolean isSorted)</PRE>
<DL>
<DD>Set a flag to indicate whether the nodes are sorted. Used when the creator of the
node-set knows that they are already in document order.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>isSorted</CODE> - true if the caller wishes to assert that the nodes are in document order
and do not need to be further sorted</DL>
</DD>
</DL>
<HR>
<A NAME="isSorted()"><!-- --></A><H3>
isSorted</H3>
<PRE>
public abstract boolean <B>isSorted</B>()
throws <A HREF="../../../../com/icl/saxon/expr/XPathException.html">XPathException</A></PRE>
<DL>
<DD>Test whether the value is known to be sorted<DD><DL>
<DT><B>Returns:</B><DD>true if the value is known to be sorted in document order, false if it is not
known whether it is sorted.</DL>
</DD>
</DL>
<HR>
<A NAME="asString()"><!-- --></A><H3>
asString</H3>
<PRE>
public abstract java.lang.String <B>asString</B>()
throws <A HREF="../../../../com/icl/saxon/expr/XPathException.html">XPathException</A></PRE>
<DL>
<DD>Convert to string value<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../com/icl/saxon/expr/Value.html#asString()">asString</A></CODE> in class <CODE><A HREF="../../../../com/icl/saxon/expr/Value.html">Value</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the value of the first node in the node-set if there
is one, otherwise an empty string</DL>
</DD>
</DL>
<HR>
<A NAME="asNumber()"><!-- --></A><H3>
asNumber</H3>
<PRE>
public double <B>asNumber</B>()
throws <A HREF="../../../../com/icl/saxon/expr/XPathException.html">XPathException</A></PRE>
<DL>
<DD>Evaluate as a number.<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../com/icl/saxon/expr/Value.html#asNumber()">asNumber</A></CODE> in class <CODE><A HREF="../../../../com/icl/saxon/expr/Value.html">Value</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the number obtained by evaluating as a String and converting the string to a number</DL>
</DD>
</DL>
<HR>
<A NAME="asBoolean()"><!-- --></A><H3>
asBoolean</H3>
<PRE>
public abstract boolean <B>asBoolean</B>()
throws <A HREF="../../../../com/icl/saxon/expr/XPathException.html">XPathException</A></PRE>
<DL>
<DD>Evaluate as a boolean.<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../com/icl/saxon/expr/Value.html#asBoolean()">asBoolean</A></CODE> in class <CODE><A HREF="../../../../com/icl/saxon/expr/Value.html">Value</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>true if the node set is not empty</DL>
</DD>
</DL>
<HR>
<A NAME="getCount()"><!-- --></A><H3>
getCount</H3>
<PRE>
public abstract int <B>getCount</B>()
throws <A HREF="../../../../com/icl/saxon/expr/XPathException.html">XPathException</A></PRE>
<DL>
<DD>Count the nodes in the node-set. Note this will sort the node set if necessary, to
make sure there are no duplicates.</DL>
<HR>
<A NAME="sort()"><!-- --></A><H3>
sort</H3>
<PRE>
public abstract <A HREF="../../../../com/icl/saxon/expr/NodeSetValue.html">NodeSetValue</A> <B>sort</B>()
throws <A HREF="../../../../com/icl/saxon/expr/XPathException.html">XPathException</A></PRE>
<DL>
<DD>Sort the nodes into document order.
This does nothing if the nodes are already known to be sorted; to force a sort,
call setSorted(false)<DD><DL>
<DT><B>Parameters:</B><DD><CODE>controller</CODE> - The controller used to sort nodes into document order<DT><B>Returns:</B><DD>the same NodeSetValue, after sorting. (The reason for returning this is that
it makes life easier for the XSL compiler).</DL>
</DD>
</DL>
<HR>
<A NAME="getFirst()"><!-- --></A><H3>
getFirst</H3>
<PRE>
public abstract <A HREF="../../../../com/icl/saxon/om/NodeInfo.html">NodeInfo</A> <B>getFirst</B>()
throws <A HREF="../../../../com/icl/saxon/expr/XPathException.html">XPathException</A></PRE>
<DL>
<DD>Get the first node in the nodeset (in document order)<DD><DL>
<DT><B>Returns:</B><DD>the first node</DL>
</DD>
</DL>
<HR>
<A NAME="equals(com.icl.saxon.expr.Value)"><!-- --></A><H3>
equals</H3>
<PRE>
public boolean <B>equals</B>(<A HREF="../../../../com/icl/saxon/expr/Value.html">Value</A> other)
throws <A HREF="../../../../com/icl/saxon/expr/XPathException.html">XPathException</A></PRE>
<DL>
<DD>Test whether a nodeset "equals" another Value<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../com/icl/saxon/expr/Value.html#equals(com.icl.saxon.expr.Value)">equals</A></CODE> in class <CODE><A HREF="../../../../com/icl/saxon/expr/Value.html">Value</A></CODE></DL>
</DD>
<DD>Following copied from class: <CODE>com.icl.saxon.expr.Value</CODE></DD>
<DD><DL>
<DT><B>Returns:</B><DD>a boolean giving the value of the expression, evaluated in the current context</DL>
</DD>
</DL>
<HR>
<A NAME="notEquals(com.icl.saxon.expr.Value)"><!-- --></A><H3>
notEquals</H3>
<PRE>
public boolean <B>notEquals</B>(<A HREF="../../../../com/icl/saxon/expr/Value.html">Value</A> other)
throws <A HREF="../../../../com/icl/saxon/expr/XPathException.html">XPathException</A></PRE>
<DL>
<DD>Test whether a nodeset "not-equals" another Value<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../com/icl/saxon/expr/Value.html#notEquals(com.icl.saxon.expr.Value)">notEquals</A></CODE> in class <CODE><A HREF="../../../../com/icl/saxon/expr/Value.html">Value</A></CODE></DL>
</DD>
<DD>Following copied from class: <CODE>com.icl.saxon.expr.Value</CODE></DD>
<DD><DL>
<DT><B>Returns:</B><DD>a boolean giving the value of the expression, evaluated in the current context</DL>
</DD>
</DL>
<HR>
<A NAME="compare(int, com.icl.saxon.expr.Value)"><!-- --></A><H3>
compare</H3>
<PRE>
public boolean <B>compare</B>(int operator,
<A HREF="../../../../com/icl/saxon/expr/Value.html">Value</A> other)
throws <A HREF="../../../../com/icl/saxon/expr/XPathException.html">XPathException</A></PRE>
<DL>
<DD>Test how a nodeset compares to another Value under a relational comparison<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../com/icl/saxon/expr/Value.html#compare(int, com.icl.saxon.expr.Value)">compare</A></CODE> in class <CODE><A HREF="../../../../com/icl/saxon/expr/Value.html">Value</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>operator</CODE> - The comparison operator, one of Tokenizer.LE, Tokenizer.LT,
Tokenizer.GE, Tokenizer.GT,</DL>
</DD>
</DL>
<HR>
<A NAME="display(int)"><!-- --></A><H3>
display</H3>
<PRE>
public void <B>display</B>(int level)</PRE>
<DL>
<DD>Diagnostic print of expression structure<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../com/icl/saxon/expr/Expression.html#display(int)">display</A></CODE> in class <CODE><A HREF="../../../../com/icl/saxon/expr/Expression.html">Expression</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="conversionPreference(java.lang.Class)"><!-- --></A><H3>
conversionPreference</H3>
<PRE>
public int <B>conversionPreference</B>(java.lang.Class required)</PRE>
<DL>
<DD>Get conversion preference for this value to a Java class. A low result
indicates higher preference.<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../com/icl/saxon/expr/Value.html#conversionPreference(java.lang.Class)">conversionPreference</A></CODE> in class <CODE><A HREF="../../../../com/icl/saxon/expr/Value.html">Value</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="convertToJava(java.lang.Class)"><!-- --></A><H3>
convertToJava</H3>
<PRE>
public java.lang.Object <B>convertToJava</B>(java.lang.Class target)
throws <A HREF="../../../../com/icl/saxon/expr/XPathException.html">XPathException</A></PRE>
<DL>
<DD>Convert to Java object (for passing to external functions)<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../com/icl/saxon/expr/Value.html#convertToJava(java.lang.Class)">convertToJava</A></CODE> in class <CODE><A HREF="../../../../com/icl/saxon/expr/Value.html">Value</A></CODE></DL>
</DD>
<DD>Following copied from class: <CODE>com.icl.saxon.expr.Value</CODE></DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>target</CODE> - The class required by the external function<DT><B>Returns:</B><DD>an object of the target class</DL>
</DD>
</DL>
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