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EJBQLExpression (Cayenne Documentation 3.0.2 API)
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org.apache.cayenne.ejbql</FONT>
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Interface EJBQLExpression</H2>
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<DT><B>All Known Subinterfaces:</B> <DD><A HREF="../../../../org/apache/cayenne/ejbql/parser/Node.html" title="interface in org.apache.cayenne.ejbql.parser">Node</A></DD>
</DL>
<DL>
<DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../../org/apache/cayenne/ejbql/parser/AggregateConditionNode.html" title="class in org.apache.cayenne.ejbql.parser">AggregateConditionNode</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLAbs.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLAbs</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLAbstractSchemaName.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLAbstractSchemaName</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLAdd.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLAdd</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLAggregate.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLAggregate</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLAggregateColumn.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLAggregateColumn</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLAll.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLAll</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLAnd.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLAnd</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLAny.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLAny</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLAscending.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLAscending</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLAverage.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLAverage</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLBetween.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLBetween</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLBooleanLiteral.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLBooleanLiteral</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLClassName.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLClassName</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLConcat.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLConcat</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLConstructor.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLConstructor</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLConstructorParameter.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLConstructorParameter</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLConstructorParameters.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLConstructorParameters</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLCount.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLCount</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLCurrentDate.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLCurrentDate</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLCurrentTime.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLCurrentTime</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLCurrentTimestamp.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLCurrentTimestamp</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLDbPath.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLDbPath</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLDecimalLiteral.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLDecimalLiteral</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLDelete.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLDelete</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLDescending.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLDescending</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLDistinct.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLDistinct</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLDivide.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLDivide</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLEquals.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLEquals</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLEscapeCharacter.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLEscapeCharacter</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLExists.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLExists</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLFrom.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLFrom</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLFromItem.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLFromItem</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLGreaterOrEqual.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLGreaterOrEqual</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLGreaterThan.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLGreaterThan</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLGroupBy.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLGroupBy</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLHaving.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLHaving</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLIdentificationVariable.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLIdentificationVariable</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLIdentifier.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLIdentifier</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLIn.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLIn</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLInnerFetchJoin.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLInnerFetchJoin</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLInnerJoin.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLInnerJoin</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLIntegerLiteral.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLIntegerLiteral</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLIsEmpty.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLIsEmpty</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLIsNull.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLIsNull</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLJoin.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLJoin</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLLength.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLLength</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLLessOrEqual.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLLessOrEqual</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLLessThan.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLLessThan</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLLike.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLLike</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLLocate.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLLocate</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLLower.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLLower</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLMax.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLMax</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLMemberOf.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLMemberOf</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLMin.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLMin</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLMod.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLMod</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLMultiply.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLMultiply</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLNamedInputParameter.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLNamedInputParameter</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLNegative.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLNegative</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLNot.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLNot</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLNotEquals.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLNotEquals</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLOr.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLOr</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLOrderBy.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLOrderBy</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLOrderByItem.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLOrderByItem</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLOuterFetchJoin.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLOuterFetchJoin</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLOuterJoin.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLOuterJoin</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLPath.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLPath</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLPatternValue.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLPatternValue</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLPositionalInputParameter.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLPositionalInputParameter</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLSelect.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLSelect</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLSelectClause.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLSelectClause</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLSelectExpression.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLSelectExpression</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLSelectExpressions.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLSelectExpressions</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLSize.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLSize</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLSqrt.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLSqrt</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLStringLiteral.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLStringLiteral</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLSubselect.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLSubselect</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLSubstring.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLSubstring</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLSubtract.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLSubtract</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLSum.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLSum</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLTok.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLTok</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLTrim.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLTrim</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLTrimBoth.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLTrimBoth</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLTrimCharacter.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLTrimCharacter</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLTrimLeading.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLTrimLeading</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLTrimSpecification.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLTrimSpecification</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLTrimTrailing.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLTrimTrailing</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLUpdate.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLUpdate</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLUpdateField.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLUpdateField</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLUpdateItem.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLUpdateItem</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLUpdateValue.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLUpdateValue</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLUpper.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLUpper</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/EJBQLWhere.html" title="class in org.apache.cayenne.ejbql.parser">EJBQLWhere</A>, <A HREF="../../../../org/apache/cayenne/ejbql/parser/SimpleNode.html" title="class in org.apache.cayenne.ejbql.parser">SimpleNode</A></DD>
</DL>
<HR>
<DL>
<DT><PRE>public interface <B>EJBQLExpression</B></DL>
</PRE>
<P>
An abstract EJBQL expression interface.
<P>
<P>
<DL>
<DT><B>Since:</B></DT>
<DD>3.0</DD>
</DL>
<HR>
<P>
<!-- ========== METHOD SUMMARY =========== -->
<A NAME="method_summary"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
<B>Method Summary</B></FONT></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../org/apache/cayenne/ejbql/EJBQLExpression.html" title="interface in org.apache.cayenne.ejbql">EJBQLExpression</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/cayenne/ejbql/EJBQLExpression.html#getChild(int)">getChild</A></B>(int&nbsp;index)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns a child expression node at the specified index.</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="../../../../org/apache/cayenne/ejbql/EJBQLExpression.html#getChildrenCount()">getChildrenCount</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns a number of child operands of this expression node.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="http://java.sun.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="../../../../org/apache/cayenne/ejbql/EJBQLExpression.html#getText()">getText</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns a text property of the node.</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="../../../../org/apache/cayenne/ejbql/EJBQLExpression.html#isNegated()">isNegated</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns an optional boolean flag that negates the value of the expression.</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="../../../../org/apache/cayenne/ejbql/EJBQLExpression.html#visit(org.apache.cayenne.ejbql.EJBQLExpressionVisitor)">visit</A></B>(<A HREF="../../../../org/apache/cayenne/ejbql/EJBQLExpressionVisitor.html" title="interface in org.apache.cayenne.ejbql">EJBQLExpressionVisitor</A>&nbsp;visitor)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accepts a visitor, calling appropriate visitor method.</TD>
</TR>
</TABLE>
&nbsp;
<P>
<!-- ============ 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="visit(org.apache.cayenne.ejbql.EJBQLExpressionVisitor)"><!-- --></A><H3>
visit</H3>
<PRE>
void <B>visit</B>(<A HREF="../../../../org/apache/cayenne/ejbql/EJBQLExpressionVisitor.html" title="interface in org.apache.cayenne.ejbql">EJBQLExpressionVisitor</A>&nbsp;visitor)</PRE>
<DL>
<DD>Accepts a visitor, calling appropriate visitor method. If the visitor method
returns true, visits all children, otherwise stops.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getChildrenCount()"><!-- --></A><H3>
getChildrenCount</H3>
<PRE>
int <B>getChildrenCount</B>()</PRE>
<DL>
<DD>Returns a number of child operands of this expression node.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getChild(int)"><!-- --></A><H3>
getChild</H3>
<PRE>
<A HREF="../../../../org/apache/cayenne/ejbql/EJBQLExpression.html" title="interface in org.apache.cayenne.ejbql">EJBQLExpression</A> <B>getChild</B>(int&nbsp;index)</PRE>
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<DD>Returns a child expression node at the specified index.
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<A NAME="getText()"><!-- --></A><H3>
getText</H3>
<PRE>
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>getText</B>()</PRE>
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<DD>Returns a text property of the node.
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<A NAME="isNegated()"><!-- --></A><H3>
isNegated</H3>
<PRE>
boolean <B>isNegated</B>()</PRE>
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<DD>Returns an optional boolean flag that negates the value of the expression.
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