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

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AtomicValue
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net.sf.saxon.value</FONT>
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Class AtomicValue</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/value/Value.html" title="class in net.sf.saxon.value">net.sf.saxon.value.Value</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;
      <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>net.sf.saxon.value.AtomicValue</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../net/sf/saxon/evpull/PullEvent.html" title="interface in net.sf.saxon.evpull">PullEvent</A>, <A HREF="../../../../net/sf/saxon/om/GroundedValue.html" title="interface in net.sf.saxon.om">GroundedValue</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;, <A HREF="../../../../net/sf/saxon/om/Item.html" title="interface in net.sf.saxon.om">Item</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;, <A HREF="../../../../net/sf/saxon/om/ValueRepresentation.html" title="interface in net.sf.saxon.om">ValueRepresentation</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;, <A HREF="../../../../net/sf/saxon/type/ConversionResult.html" title="interface in net.sf.saxon.type">ConversionResult</A></DD>
</DL>
<DL>
<DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../net/sf/saxon/value/Base64BinaryValue.html" title="class in net.sf.saxon.value">Base64BinaryValue</A>, <A HREF="../../../../net/sf/saxon/value/BooleanValue.html" title="class in net.sf.saxon.value">BooleanValue</A>, <A HREF="../../../../net/sf/saxon/value/CalendarValue.html" title="class in net.sf.saxon.value">CalendarValue</A>, <A HREF="../../../../net/sf/saxon/value/DurationValue.html" title="class in net.sf.saxon.value">DurationValue</A>, <A HREF="../../../../net/sf/saxon/value/HexBinaryValue.html" title="class in net.sf.saxon.value">HexBinaryValue</A>, <A HREF="../../../../net/sf/saxon/value/NumericValue.html" title="class in net.sf.saxon.value">NumericValue</A>, <A HREF="../../../../net/sf/saxon/value/ObjectValue.html" title="class in net.sf.saxon.value">ObjectValue</A>, <A HREF="../../../../net/sf/saxon/value/QualifiedNameValue.html" title="class in net.sf.saxon.value">QualifiedNameValue</A>, <A HREF="../../../../net/sf/saxon/value/StringValue.html" title="class in net.sf.saxon.value">StringValue</A></DD>
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<DL>
<DT><PRE>public abstract class <B>AtomicValue</B><DT>extends <A HREF="../../../../net/sf/saxon/value/Value.html" title="class in net.sf.saxon.value">Value</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;<DT>implements <A HREF="../../../../net/sf/saxon/om/Item.html" title="interface in net.sf.saxon.om">Item</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;, <A HREF="../../../../net/sf/saxon/om/GroundedValue.html" title="interface in net.sf.saxon.om">GroundedValue</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;, <A HREF="../../../../net/sf/saxon/type/ConversionResult.html" title="interface in net.sf.saxon.type">ConversionResult</A></DL>
</PRE>

<P>
The AtomicValue class corresponds to the concept of an atomic value in the
 XPath 2.0 data model. Atomic values belong to one of the 19 primitive types
 defined in XML Schema; or they are of type xs:untypedAtomic; or they are
 "external objects", representing a Saxon extension to the XPath 2.0 type system.
 <p/>
 The AtomicValue class contains some methods that are suitable for applications
 to use, and many others that are designed for internal use by Saxon itself.
 These have not been fully classified. At present, therefore, none of the methods on this
 class should be considered to be part of the public Saxon API.
 <p/>
<P>

<P>
<DL>
<DT><B>Author:</B></DT>
  <DD>Michael H. Kay</DD>
</DL>
<HR>

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

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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;<A HREF="../../../../net/sf/saxon/type/AtomicType.html" title="interface in net.sf.saxon.type">AtomicType</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/value/AtomicValue.html#typeLabel">typeLabel</A></B></CODE>

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<TD><CODE><A HREF="../../../../net/sf/saxon/value/Value.html#INDETERMINATE_ORDERING">INDETERMINATE_ORDERING</A></CODE></TD>
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<TH ALIGN="left"><B>Fields inherited from interface net.sf.saxon.om.<A HREF="../../../../net/sf/saxon/om/ValueRepresentation.html" title="interface in net.sf.saxon.om">ValueRepresentation</A></B></TH>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../net/sf/saxon/om/ValueRepresentation.html#EMPTY_VALUE_ARRAY">EMPTY_VALUE_ARRAY</A></CODE></TD>
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&nbsp;
<!-- ======== CONSTRUCTOR SUMMARY ======== -->

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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../net/sf/saxon/value/AtomicValue.html#AtomicValue()">AtomicValue</A></B>()</CODE>

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

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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/value/AtomicValue.html#asAtomic()">asAtomic</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Calling this method on a ConversionResult returns the AtomicValue that results
 from the conversion if the conversion was successful, and throws a ValidationException
 explaining the conversion error otherwise.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/value/AtomicValue.html#checkPermittedContents(net.sf.saxon.type.SchemaType, net.sf.saxon.expr.StaticContext, boolean)">checkPermittedContents</A></B>(<A HREF="../../../../net/sf/saxon/type/SchemaType.html" title="interface in net.sf.saxon.type">SchemaType</A>&nbsp;parentType,
                       <A HREF="../../../../net/sf/saxon/expr/StaticContext.html" title="interface in net.sf.saxon.expr">StaticContext</A>&nbsp;env,
                       boolean&nbsp;whole)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Check statically that the results of the expression are capable of constructing the content
 of a given schema type.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract &nbsp;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/value/AtomicValue.html#copyAsSubType(net.sf.saxon.type.AtomicType)">copyAsSubType</A></B>(<A HREF="../../../../net/sf/saxon/type/AtomicType.html" title="interface in net.sf.saxon.type">AtomicType</A>&nbsp;typeLabel)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Create a copy of this atomic value, with a different type label</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/value/AtomicValue.html#effectiveBooleanValue()">effectiveBooleanValue</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the effective boolean value of the value</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract &nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/value/AtomicValue.html#equals(java.lang.Object)">equals</A></B>(<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>&nbsp;o)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The equals() methods on atomic values is defined to follow the semantics of eq when applied
 to two atomic values.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/value/AtomicValue.html#getCardinality()">getCardinality</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Determine the static cardinality</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/value/AtomicValue.html#getComponent(int)">getComponent</A></B>(int&nbsp;component)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Method to extract components of a 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/type/ItemType.html" title="interface in net.sf.saxon.type">ItemType</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/value/AtomicValue.html#getItemType(net.sf.saxon.type.TypeHierarchy)">getItemType</A></B>(<A HREF="../../../../net/sf/saxon/type/TypeHierarchy.html" title="class in net.sf.saxon.type">TypeHierarchy</A>&nbsp;th)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Determine the data type of the items in the expression, if possible</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/value/AtomicValue.html#getLength()">getLength</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the length of the sequence</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected abstract &nbsp;<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></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/value/AtomicValue.html#getPrimitiveStringValue()">getPrimitiveStringValue</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Convert the value to a string, using the serialization rules for the primitive type.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract &nbsp;<A HREF="../../../../net/sf/saxon/type/BuiltInAtomicType.html" title="class in net.sf.saxon.type">BuiltInAtomicType</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/value/AtomicValue.html#getPrimitiveType()">getPrimitiveType</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Determine the primitive type of the value.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract &nbsp;<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Comparable.html?is-external=true" title="class or interface in java.lang">Comparable</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/value/AtomicValue.html#getSchemaComparable()">getSchemaComparable</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get a Comparable value that implements the XML Schema ordering comparison semantics for this value.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<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/value/AtomicValue.html#getStringValue()">getStringValue</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Convert the value to a string, using the serialization rules.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<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></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/value/AtomicValue.html#getStringValueCS()">getStringValueCS</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the value of the item as a CharSequence.</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/SequenceIterator.html" title="interface in net.sf.saxon.om">SequenceIterator</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/value/AtomicValue.html#getTypedValue()">getTypedValue</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the typed value of this item</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../net/sf/saxon/type/AtomicType.html" title="interface in net.sf.saxon.type">AtomicType</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/value/AtomicValue.html#getTypeLabel()">getTypeLabel</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Determine the data type of the value.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract &nbsp;<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></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/value/AtomicValue.html#getXPathComparable(boolean, net.sf.saxon.lib.StringCollator, net.sf.saxon.expr.XPathContext)">getXPathComparable</A></B>(boolean&nbsp;ordered,
                   <A HREF="../../../../net/sf/saxon/lib/StringCollator.html" title="interface in net.sf.saxon.lib">StringCollator</A>&nbsp;collator,
                   <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;Get an object value that implements the XPath equality and ordering comparison semantics for this value.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/value/AtomicValue.html#isIdentical(net.sf.saxon.value.Value)">isIdentical</A></B>(<A HREF="../../../../net/sf/saxon/value/Value.html" title="class in net.sf.saxon.value">Value</A>&nbsp;v)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Determine whether two atomic values are identical, as determined by XML Schema rules.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/value/AtomicValue.html#isNaN()">isNaN</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Test whether the value is the special value NaN</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/value/AtomicValue.html#itemAt(int)">itemAt</A></B>(int&nbsp;n)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the n'th item in the sequence (starting from 0).</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/SequenceIterator.html" title="interface in net.sf.saxon.om">SequenceIterator</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/value/AtomicValue.html#iterate()">iterate</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Iterate over the (single) item in the sequence</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/value/AtomicValue.html#process(net.sf.saxon.expr.XPathContext)">process</A></B>(<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;Process the instruction, without returning any tail calls</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/value/AtomicValue.html#setTypeLabel(net.sf.saxon.type.AtomicType)">setTypeLabel</A></B>(<A HREF="../../../../net/sf/saxon/type/AtomicType.html" title="interface in net.sf.saxon.type">AtomicType</A>&nbsp;type)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the type label on this atomic 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/om/GroundedValue.html" title="interface in net.sf.saxon.om">GroundedValue</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/value/AtomicValue.html#subsequence(int, int)">subsequence</A></B>(int&nbsp;start,
            int&nbsp;length)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get a subsequence of the value</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<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/value/AtomicValue.html#toString()">toString</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get string value.</TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_net.sf.saxon.value.Value"><!-- --></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.value.<A HREF="../../../../net/sf/saxon/value/Value.html" title="class in net.sf.saxon.value">Value</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../net/sf/saxon/value/Value.html#asItem()">asItem</A>, <A HREF="../../../../net/sf/saxon/value/Value.html#asItem(net.sf.saxon.om.ValueRepresentation)">asItem</A>, <A HREF="../../../../net/sf/saxon/value/Value.html#asIterator(net.sf.saxon.om.ValueRepresentation)">asIterator</A>, <A HREF="../../../../net/sf/saxon/value/Value.html#asValue(net.sf.saxon.om.ValueRepresentation)">asValue</A>, <A HREF="../../../../net/sf/saxon/value/Value.html#convertToJava(net.sf.saxon.om.Item)">convertToJava</A>, <A HREF="../../../../net/sf/saxon/value/Value.html#fromItem(net.sf.saxon.om.Item)">fromItem</A>, <A HREF="../../../../net/sf/saxon/value/Value.html#getCanonicalLexicalRepresentation()">getCanonicalLexicalRepresentation</A>, <A HREF="../../../../net/sf/saxon/value/Value.html#getIterator(net.sf.saxon.om.ValueRepresentation)">getIterator</A>, <A HREF="../../../../net/sf/saxon/value/Value.html#getSequenceLength(net.sf.saxon.om.ValueRepresentation)">getSequenceLength</A>, <A HREF="../../../../net/sf/saxon/value/Value.html#hashCode()">hashCode</A>, <A HREF="../../../../net/sf/saxon/value/Value.html#reduce()">reduce</A></CODE></TD>
</TR>
</TABLE>
&nbsp;<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#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#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>
&nbsp;
<P>

<!-- ============ FIELD DETAIL =========== -->

<A NAME="field_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
<B>Field Detail</B></FONT></TH>
</TR>
</TABLE>

<A NAME="typeLabel"><!-- --></A><H3>
typeLabel</H3>
<PRE>
protected <A HREF="../../../../net/sf/saxon/type/AtomicType.html" title="interface in net.sf.saxon.type">AtomicType</A> <B>typeLabel</B></PRE>
<DL>
<DL>
</DL>
</DL>

<!-- ========= CONSTRUCTOR DETAIL ======== -->

<A NAME="constructor_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
<B>Constructor Detail</B></FONT></TH>
</TR>
</TABLE>

<A NAME="AtomicValue()"><!-- --></A><H3>
AtomicValue</H3>
<PRE>
public <B>AtomicValue</B>()</PRE>
<DL>
</DL>

<!-- ============ METHOD DETAIL ========== -->

<A NAME="method_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
<B>Method Detail</B></FONT></TH>
</TR>
</TABLE>

<A NAME="setTypeLabel(net.sf.saxon.type.AtomicType)"><!-- --></A><H3>
setTypeLabel</H3>
<PRE>
public void <B>setTypeLabel</B>(<A HREF="../../../../net/sf/saxon/type/AtomicType.html" title="interface in net.sf.saxon.type">AtomicType</A>&nbsp;type)</PRE>
<DL>
<DD>Set the type label on this atomic value. Note that this modifies the value, so it must only called
 if the caller is confident that the value is not shared. In other cases,
 use <A HREF="../../../../net/sf/saxon/value/AtomicValue.html#copyAsSubType(net.sf.saxon.type.AtomicType)"><CODE>copyAsSubType(net.sf.saxon.type.AtomicType)</CODE></A>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>type</CODE> - the type label to be set</DL>
</DD>
</DL>
<HR>

<A NAME="getSchemaComparable()"><!-- --></A><H3>
getSchemaComparable</H3>
<PRE>
public abstract <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Comparable.html?is-external=true" title="class or interface in java.lang">Comparable</A> <B>getSchemaComparable</B>()</PRE>
<DL>
<DD>Get a Comparable value that implements the XML Schema ordering comparison semantics for this value.
 An implementation must be provided for all atomic types.
 <p/>
 <p>In the case of data types that are partially ordered, the returned Comparable extends the standard
 semantics of the compareTo() method by returning the value <A HREF="../../../../net/sf/saxon/value/Value.html#INDETERMINATE_ORDERING"><CODE>Value.INDETERMINATE_ORDERING</CODE></A> when there
 is no defined order relationship between two given values. This value is also returned when two values
 of different types are compared.</p>
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../net/sf/saxon/value/Value.html#getSchemaComparable()">getSchemaComparable</A></CODE> in class <CODE><A HREF="../../../../net/sf/saxon/value/Value.html" title="class in net.sf.saxon.value">Value</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;</CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>a Comparable that follows XML Schema comparison rules</DL>
</DD>
</DL>
<HR>

<A NAME="getXPathComparable(boolean, net.sf.saxon.lib.StringCollator, net.sf.saxon.expr.XPathContext)"><!-- --></A><H3>
getXPathComparable</H3>
<PRE>
public abstract <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>getXPathComparable</B>(boolean&nbsp;ordered,
                                          <A HREF="../../../../net/sf/saxon/lib/StringCollator.html" title="interface in net.sf.saxon.lib">StringCollator</A>&nbsp;collator,
                                          <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/NoDynamicContextException.html" title="class in net.sf.saxon.trans">NoDynamicContextException</A></PRE>
<DL>
<DD>Get an object value that implements the XPath equality and ordering comparison semantics for this value.
 If the ordered parameter is set to true, the result will be a Comparable and will support a compareTo()
 method with the semantics of the XPath lt/gt operator, provided that the other operand is also obtained
 using the getXPathComparable() method. In all cases the result will support equals() and hashCode() methods
 that support the semantics of the XPath eq operator, again provided that the other operand is also obtained
 using the getXPathComparable() method. A context argument is supplied for use in cases where the comparison
 semantics are context-sensitive, for example where they depend on the implicit timezone or the default
 collation.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>ordered</CODE> - true if an ordered comparison is required. In this case the result is null if the
 type is unordered; in other cases the returned value will be a Comparable.<DD><CODE>collator</CODE> - the collation to be used when comparing strings<DD><CODE>context</CODE> - the XPath dynamic evaluation context, used in cases where the comparison is context
 sensitive
<DT><B>Returns:</B><DD>an Object whose equals() and hashCode() methods implement the XPath comparison semantics
         with respect to this atomic value. If ordered is specified, the result will either be null if
         no ordering is defined, or will be a Comparable
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../net/sf/saxon/trans/NoDynamicContextException.html" title="class in net.sf.saxon.trans">NoDynamicContextException</A></CODE> - if the comparison depends on dynamic context information that
 is not available, for example implicit timezone</DL>
</DD>
</DL>
<HR>

<A NAME="equals(java.lang.Object)"><!-- --></A><H3>
equals</H3>
<PRE>
public abstract boolean <B>equals</B>(<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>&nbsp;o)</PRE>
<DL>
<DD>The equals() methods on atomic values is defined to follow the semantics of eq when applied
 to two atomic values. When the other operand is not an atomic value, the result is undefined
 (may be false, may be an exception). When the other operand is an atomic value that cannot be
 compared with this one, the method must throw a ClassCastException.

 <p>The hashCode() method is consistent with equals().</p>
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../net/sf/saxon/value/Value.html#equals(java.lang.Object)">equals</A></CODE> in class <CODE><A HREF="../../../../net/sf/saxon/value/Value.html" title="class in net.sf.saxon.value">Value</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;</CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>o</CODE> - the other value
<DT><B>Returns:</B><DD>true if the other operand is an atomic value and the two values are equal as defined
 by the XPath eq operator</DL>
</DD>
</DL>
<HR>

<A NAME="isIdentical(net.sf.saxon.value.Value)"><!-- --></A><H3>
isIdentical</H3>
<PRE>
public boolean <B>isIdentical</B>(<A HREF="../../../../net/sf/saxon/value/Value.html" title="class in net.sf.saxon.value">Value</A>&nbsp;v)</PRE>
<DL>
<DD>Determine whether two atomic values are identical, as determined by XML Schema rules. This is a stronger
 test than equality (even schema-equality); for example two dateTime values are not identical unless
 they are in the same timezone.
 <p>Note that even this check ignores the type annotation of the value. The integer 3 and the short 3
 are considered identical, even though they are not fully interchangeable. "Identical" means the
 same point in the value space, regardless of type annotation.</p>
 <p>NaN is identical to itself.</p>
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../net/sf/saxon/value/Value.html#isIdentical(net.sf.saxon.value.Value)">isIdentical</A></CODE> in class <CODE><A HREF="../../../../net/sf/saxon/value/Value.html" title="class in net.sf.saxon.value">Value</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;</CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>v</CODE> - the other value to be compared with this one
<DT><B>Returns:</B><DD>true if the two values are identical, false otherwise.</DL>
</DD>
</DL>
<HR>

<A NAME="getStringValueCS()"><!-- --></A><H3>
getStringValueCS</H3>
<PRE>
public final <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> <B>getStringValueCS</B>()</PRE>
<DL>
<DD>Get the value of the item as a CharSequence. This is in some cases more efficient than
 the version of the method that returns a String.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../net/sf/saxon/om/Item.html#getStringValueCS()">getStringValueCS</A></CODE> in interface <CODE><A HREF="../../../../net/sf/saxon/om/Item.html" title="interface in net.sf.saxon.om">Item</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;</CODE><DT><B>Specified by:</B><DD><CODE><A HREF="../../../../net/sf/saxon/om/ValueRepresentation.html#getStringValueCS()">getStringValueCS</A></CODE> in interface <CODE><A HREF="../../../../net/sf/saxon/om/ValueRepresentation.html" title="interface in net.sf.saxon.om">ValueRepresentation</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;</CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../../net/sf/saxon/value/Value.html#getStringValueCS()">getStringValueCS</A></CODE> in class <CODE><A HREF="../../../../net/sf/saxon/value/Value.html" title="class in net.sf.saxon.value">Value</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;</CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the result of converting the value to a string<DT><B>See Also:</B><DD><A HREF="../../../../net/sf/saxon/om/Item.html#getStringValue()"><CODE>Item.getStringValue()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="process(net.sf.saxon.expr.XPathContext)"><!-- --></A><H3>
process</H3>
<PRE>
public void <B>process</B>(<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>Process the instruction, without returning any tail calls
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../net/sf/saxon/value/Value.html#process(net.sf.saxon.expr.XPathContext)">process</A></CODE> in class <CODE><A HREF="../../../../net/sf/saxon/value/Value.html" title="class in net.sf.saxon.value">Value</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;</CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>context</CODE> - The dynamic context, giving access to the current node,
                the current variables, etc.
<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 occurs (for example if the value is
 a closure that needs to be evaluated)</DL>
</DD>
</DL>
<HR>

<A NAME="itemAt(int)"><!-- --></A><H3>
itemAt</H3>
<PRE>
public final <A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A> <B>itemAt</B>(int&nbsp;n)</PRE>
<DL>
<DD>Get the n'th item in the sequence (starting from 0). This is defined for all
 Values, but its real benefits come for a sequence Value stored extensionally
 (or for a MemoClosure, once all the values have been read)
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../net/sf/saxon/om/GroundedValue.html#itemAt(int)">itemAt</A></CODE> in interface <CODE><A HREF="../../../../net/sf/saxon/om/GroundedValue.html" title="interface in net.sf.saxon.om">GroundedValue</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;</CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../../net/sf/saxon/value/Value.html#itemAt(int)">itemAt</A></CODE> in class <CODE><A HREF="../../../../net/sf/saxon/value/Value.html" title="class in net.sf.saxon.value">Value</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;</CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>n</CODE> - position of the required item, counting from zero.
<DT><B>Returns:</B><DD>the n'th item in the sequence, where the first item in the sequence is
         numbered zero. If n is negative or >= the length of the sequence, returns null.</DL>
</DD>
</DL>
<HR>

<A NAME="getItemType(net.sf.saxon.type.TypeHierarchy)"><!-- --></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>(<A HREF="../../../../net/sf/saxon/type/TypeHierarchy.html" title="class in net.sf.saxon.type">TypeHierarchy</A>&nbsp;th)</PRE>
<DL>
<DD>Determine the data type of the items in the expression, if possible
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../net/sf/saxon/value/Value.html#getItemType(net.sf.saxon.type.TypeHierarchy)">getItemType</A></CODE> in class <CODE><A HREF="../../../../net/sf/saxon/value/Value.html" title="class in net.sf.saxon.value">Value</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;</CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>th</CODE> - The TypeHierarchy. Can be null if the target is an AtomicValue,
           except in the case where it is an external ObjectValue.
<DT><B>Returns:</B><DD>for the default implementation: AnyItemType (not known)</DL>
</DD>
</DL>
<HR>

<A NAME="getTypeLabel()"><!-- --></A><H3>
getTypeLabel</H3>
<PRE>
public <A HREF="../../../../net/sf/saxon/type/AtomicType.html" title="interface in net.sf.saxon.type">AtomicType</A> <B>getTypeLabel</B>()</PRE>
<DL>
<DD>Determine the data type of the value. This
 delivers the same answer as <A HREF="../../../../net/sf/saxon/value/AtomicValue.html#getItemType(net.sf.saxon.type.TypeHierarchy)"><CODE>getItemType(net.sf.saxon.type.TypeHierarchy)</CODE></A>, except in the case of external objects
 (instances of <A HREF="../../../../net/sf/saxon/value/ObjectValue.html" title="class in net.sf.saxon.value"><CODE>ObjectValue</CODE></A>, where the method may deliver a less specific type.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>for the default implementation: AnyItemType (not known)</DL>
</DD>
</DL>
<HR>

<A NAME="getPrimitiveType()"><!-- --></A><H3>
getPrimitiveType</H3>
<PRE>
public abstract <A HREF="../../../../net/sf/saxon/type/BuiltInAtomicType.html" title="class in net.sf.saxon.type">BuiltInAtomicType</A> <B>getPrimitiveType</B>()</PRE>
<DL>
<DD>Determine the primitive type of the value. This delivers the same answer as
 getItemType().getPrimitiveItemType(). The primitive types are
 the 19 primitive types of XML Schema, plus xs:integer, xs:dayTimeDuration and xs:yearMonthDuration,
 and xs:untypedAtomic. For external objects, the result is xs:anyAtomicType.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the primitive type</DL>
</DD>
</DL>
<HR>

<A NAME="getCardinality()"><!-- --></A><H3>
getCardinality</H3>
<PRE>
public final int <B>getCardinality</B>()</PRE>
<DL>
<DD>Determine the static cardinality
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../net/sf/saxon/value/Value.html#getCardinality()">getCardinality</A></CODE> in class <CODE><A HREF="../../../../net/sf/saxon/value/Value.html" title="class in net.sf.saxon.value">Value</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;</CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>code identifying the cardinality<DT><B>See Also:</B><DD><A HREF="../../../../net/sf/saxon/value/Cardinality.html" title="class in net.sf.saxon.value"><CODE>Cardinality</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="copyAsSubType(net.sf.saxon.type.AtomicType)"><!-- --></A><H3>
copyAsSubType</H3>
<PRE>
public abstract <A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A> <B>copyAsSubType</B>(<A HREF="../../../../net/sf/saxon/type/AtomicType.html" title="interface in net.sf.saxon.type">AtomicType</A>&nbsp;typeLabel)</PRE>
<DL>
<DD>Create a copy of this atomic value, with a different type label
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>typeLabel</CODE> - the type label of the new copy. The caller is responsible for checking that
                  the value actually conforms to this type.
<DT><B>Returns:</B><DD>the copied value</DL>
</DD>
</DL>
<HR>

<A NAME="isNaN()"><!-- --></A><H3>
isNaN</H3>
<PRE>
public boolean <B>isNaN</B>()</PRE>
<DL>
<DD>Test whether the value is the special value NaN
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>true if the value is float NaN or double NaN or precisionDecimal NaN; otherwise false</DL>
</DD>
</DL>
<HR>

<A NAME="getLength()"><!-- --></A><H3>
getLength</H3>
<PRE>
public final int <B>getLength</B>()</PRE>
<DL>
<DD>Get the length of the sequence
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../net/sf/saxon/om/GroundedValue.html#getLength()">getLength</A></CODE> in interface <CODE><A HREF="../../../../net/sf/saxon/om/GroundedValue.html" title="interface in net.sf.saxon.om">GroundedValue</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;</CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../../net/sf/saxon/value/Value.html#getLength()">getLength</A></CODE> in class <CODE><A HREF="../../../../net/sf/saxon/value/Value.html" title="class in net.sf.saxon.value">Value</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;</CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>always 1 for an atomic value</DL>
</DD>
</DL>
<HR>

<A NAME="iterate()"><!-- --></A><H3>
iterate</H3>
<PRE>
public final <A HREF="../../../../net/sf/saxon/om/SequenceIterator.html" title="interface in net.sf.saxon.om">SequenceIterator</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt; <B>iterate</B>()</PRE>
<DL>
<DD>Iterate over the (single) item in the sequence
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../net/sf/saxon/value/Value.html#iterate()">iterate</A></CODE> in class <CODE><A HREF="../../../../net/sf/saxon/value/Value.html" title="class in net.sf.saxon.value">Value</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;</CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>a SequenceIterator that iterates over the single item in this
         value</DL>
</DD>
</DL>
<HR>

<A NAME="getStringValue()"><!-- --></A><H3>
getStringValue</H3>
<PRE>
public final <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>getStringValue</B>()</PRE>
<DL>
<DD>Convert the value to a string, using the serialization rules.
 For atomic values this is the same as a cast; for sequence values
 it gives a space-separated list. This method is refined for AtomicValues
 so that it never throws an Exception.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../net/sf/saxon/om/Item.html#getStringValue()">getStringValue</A></CODE> in interface <CODE><A HREF="../../../../net/sf/saxon/om/Item.html" title="interface in net.sf.saxon.om">Item</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;</CODE><DT><B>Specified by:</B><DD><CODE><A HREF="../../../../net/sf/saxon/om/ValueRepresentation.html#getStringValue()">getStringValue</A></CODE> in interface <CODE><A HREF="../../../../net/sf/saxon/om/ValueRepresentation.html" title="interface in net.sf.saxon.om">ValueRepresentation</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;</CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../../net/sf/saxon/value/Value.html#getStringValue()">getStringValue</A></CODE> in class <CODE><A HREF="../../../../net/sf/saxon/value/Value.html" title="class in net.sf.saxon.value">Value</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;</CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the result of converting the value to a string<DT><B>See Also:</B><DD><A HREF="../../../../net/sf/saxon/om/Item.html#getStringValueCS()"><CODE>Item.getStringValueCS()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getPrimitiveStringValue()"><!-- --></A><H3>
getPrimitiveStringValue</H3>
<PRE>
protected abstract <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> <B>getPrimitiveStringValue</B>()</PRE>
<DL>
<DD>Convert the value to a string, using the serialization rules for the primitive type.
 This is the result of conversion to a string except that postprocessing defined by the
 saxon:preprocess facet is not (yet) applied.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the value converted to a string according to the rules for the primitive type</DL>
</DD>
</DL>
<HR>

<A NAME="getTypedValue()"><!-- --></A><H3>
getTypedValue</H3>
<PRE>
public final <A HREF="../../../../net/sf/saxon/om/SequenceIterator.html" title="interface in net.sf.saxon.om">SequenceIterator</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt; <B>getTypedValue</B>()</PRE>
<DL>
<DD>Get the typed value of this item
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../net/sf/saxon/om/Item.html#getTypedValue()">getTypedValue</A></CODE> in interface <CODE><A HREF="../../../../net/sf/saxon/om/Item.html" title="interface in net.sf.saxon.om">Item</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;</CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the typed value of the expression (which is this value)</DL>
</DD>
</DL>
<HR>

<A NAME="effectiveBooleanValue()"><!-- --></A><H3>
effectiveBooleanValue</H3>
<PRE>
public boolean <B>effectiveBooleanValue</B>()
                              throws <A HREF="../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></PRE>
<DL>
<DD>Get the effective boolean value of the value
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../net/sf/saxon/value/Value.html#effectiveBooleanValue()">effectiveBooleanValue</A></CODE> in class <CODE><A HREF="../../../../net/sf/saxon/value/Value.html" title="class in net.sf.saxon.value">Value</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;</CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>true, unless the value is boolean false, numeric zero, or
         zero-length string
<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 dynamic error occurs evaluating the
     expression</DL>
</DD>
</DL>
<HR>

<A NAME="getComponent(int)"><!-- --></A><H3>
getComponent</H3>
<PRE>
public <A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A> <B>getComponent</B>(int&nbsp;component)
                         throws <A HREF="../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></PRE>
<DL>
<DD>Method to extract components of a value. Implemented by some subclasses,
 but defined at this level for convenience
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>component</CODE> - identifies the required component, as a constant defined in class
                  <A HREF="../../../../net/sf/saxon/functions/Component.html" title="class in net.sf.saxon.functions"><CODE>Component</CODE></A>, for example <A HREF="../../../../net/sf/saxon/functions/Component.html#HOURS"><CODE>Component.HOURS</CODE></A>
<DT><B>Returns:</B><DD>the value of the requested component of this value
<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 a dynamic error occurs
<DD><CODE><A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/UnsupportedOperationException.html?is-external=true" title="class or interface in java.lang">UnsupportedOperationException</A></CODE> - if applied to a value of a type that has no components</DL>
</DD>
</DL>
<HR>

<A NAME="checkPermittedContents(net.sf.saxon.type.SchemaType, net.sf.saxon.expr.StaticContext, boolean)"><!-- --></A><H3>
checkPermittedContents</H3>
<PRE>
public void <B>checkPermittedContents</B>(<A HREF="../../../../net/sf/saxon/type/SchemaType.html" title="interface in net.sf.saxon.type">SchemaType</A>&nbsp;parentType,
                                   <A HREF="../../../../net/sf/saxon/expr/StaticContext.html" title="interface in net.sf.saxon.expr">StaticContext</A>&nbsp;env,
                                   boolean&nbsp;whole)
                            throws <A HREF="../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></PRE>
<DL>
<DD>Check statically that the results of the expression are capable of constructing the content
 of a given schema type.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../net/sf/saxon/value/Value.html#checkPermittedContents(net.sf.saxon.type.SchemaType, net.sf.saxon.expr.StaticContext, boolean)">checkPermittedContents</A></CODE> in class <CODE><A HREF="../../../../net/sf/saxon/value/Value.html" title="class in net.sf.saxon.value">Value</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;</CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>parentType</CODE> - The schema type<DD><CODE>env</CODE> - the static context<DD><CODE>whole</CODE> - true if this atomic value accounts for the entire content of the containing node
<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 the expression doesn't match the required content type</DL>
</DD>
</DL>
<HR>

<A NAME="asAtomic()"><!-- --></A><H3>
asAtomic</H3>
<PRE>
public <A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A> <B>asAtomic</B>()</PRE>
<DL>
<DD>Calling this method on a ConversionResult returns the AtomicValue that results
 from the conversion if the conversion was successful, and throws a ValidationException
 explaining the conversion error otherwise.
 <p/>
 <p>Use this method if you are calling a conversion method that returns a ConversionResult,
 and if you want to throw an exception if the conversion fails.</p>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../net/sf/saxon/type/ConversionResult.html#asAtomic()">asAtomic</A></CODE> in interface <CODE><A HREF="../../../../net/sf/saxon/type/ConversionResult.html" title="interface in net.sf.saxon.type">ConversionResult</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the atomic value that results from the conversion if the conversion was successful</DL>
</DD>
</DL>
<HR>

<A NAME="subsequence(int, int)"><!-- --></A><H3>
subsequence</H3>
<PRE>
public <A HREF="../../../../net/sf/saxon/om/GroundedValue.html" title="interface in net.sf.saxon.om">GroundedValue</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt; <B>subsequence</B>(int&nbsp;start,
                                              int&nbsp;length)</PRE>
<DL>
<DD>Get a subsequence of the value
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../net/sf/saxon/om/GroundedValue.html#subsequence(int, int)">subsequence</A></CODE> in interface <CODE><A HREF="../../../../net/sf/saxon/om/GroundedValue.html" title="interface in net.sf.saxon.om">GroundedValue</A>&lt;<A HREF="../../../../net/sf/saxon/value/AtomicValue.html" title="class in net.sf.saxon.value">AtomicValue</A>&gt;</CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>start</CODE> - the index of the first item to be included in the result, counting from zero.
               A negative value is taken as zero. If the value is beyond the end of the sequence, an empty
               sequence is returned<DD><CODE>length</CODE> - the number of items to be included in the result. Specify Integer.MAX_VALUE to
               get the subsequence up to the end of the base sequence. If the value is negative, an empty sequence
               is returned. If the value goes off the end of the sequence, the result returns items up to the end
               of the sequence
<DT><B>Returns:</B><DD>the required subsequence. If min is</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>Get string value. In general toString() for an atomic value displays the value as it would be
 written in XPath: that is, as a literal if available, or as a call on a constructor function
 otherwise.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><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></CODE> in class <CODE><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></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
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