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Value (OpenJPA Parent POM 2.0.1 API)
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org.apache.openjpa.kernel.exps</FONT>
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Interface Value</H2>
<DL>
<DT><B>All Superinterfaces:</B> <DD><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</A></DD>
</DL>
<DL>
<DT><B>All Known Subinterfaces:</B> <DD><A HREF="../../../../../org/apache/openjpa/kernel/exps/Arguments.html" title="interface in org.apache.openjpa.kernel.exps">Arguments</A>, <A HREF="../../../../../org/apache/openjpa/jdbc/kernel/exps/JDBCPath.html" title="interface in org.apache.openjpa.jdbc.kernel.exps">JDBCPath</A>, <A HREF="../../../../../org/apache/openjpa/kernel/exps/Literal.html" title="interface in org.apache.openjpa.kernel.exps">Literal</A>, <A HREF="../../../../../org/apache/openjpa/kernel/exps/Parameter.html" title="interface in org.apache.openjpa.kernel.exps">Parameter</A>, <A HREF="../../../../../org/apache/openjpa/kernel/exps/Path.html" title="interface in org.apache.openjpa.kernel.exps">Path</A>, <A HREF="../../../../../org/apache/openjpa/kernel/exps/Subquery.html" title="interface in org.apache.openjpa.kernel.exps">Subquery</A>, <A HREF="../../../../../org/apache/openjpa/jdbc/kernel/exps/Val.html" title="interface in org.apache.openjpa.jdbc.kernel.exps">Val</A></DD>
</DL>
<DL>
<DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../../../org/apache/openjpa/kernel/exps/Abs.html" title="class in org.apache.openjpa.kernel.exps">Abs</A>, <A HREF="../../../../../org/apache/openjpa/jdbc/kernel/exps/Abs.html" title="class in org.apache.openjpa.jdbc.kernel.exps">Abs</A>, <A HREF="../../../../../org/apache/openjpa/jdbc/kernel/exps/AbstractVal.html" title="class in org.apache.openjpa.jdbc.kernel.exps">AbstractVal</A>, <A HREF="../../../../../org/apache/openjpa/kernel/exps/Add.html" title="class in org.apache.openjpa.kernel.exps">Add</A>, <A HREF="../../../../../org/apache/openjpa/kernel/exps/Aggregate.html" title="class in org.apache.openjpa.kernel.exps">Aggregate</A>, <A HREF="../../../../../org/apache/openjpa/jdbc/kernel/exps/Aggregate.html" title="class in org.apache.openjpa.jdbc.kernel.exps">Aggregate</A>, <A HREF="../../../../../org/apache/openjpa/kernel/exps/AggregateVal.html" title="class in org.apache.openjpa.kernel.exps">AggregateVal</A>, <A HREF="../../../../../org/apache/openjpa/kernel/exps/All.html" title="class in org.apache.openjpa.kernel.exps">All</A>, <A HREF="../../../../../org/apache/openjpa/jdbc/kernel/exps/All.html" title="class in org.apache.openjpa.jdbc.kernel.exps">All</A>, <A HREF="../../../../../org/apache/openjpa/kernel/exps/Any.html" title="class in org.apache.openjpa.kernel.exps">Any</A>, <A HREF="../../../../../org/apache/openjpa/jdbc/kernel/exps/Any.html" title="class in org.apache.openjpa.jdbc.kernel.exps">Any</A>, <A HREF="../../../../../org/apache/openjpa/kernel/exps/Args.html" title="class in org.apache.openjpa.kernel.exps">Args</A>, <A HREF="../../../../../org/apache/openjpa/jdbc/kernel/exps/Args.html" title="class in org.apache.openjpa.jdbc.kernel.exps">Args</A>, <A HREF="../../../../../org/apache/openjpa/kernel/exps/Avg.html" title="class in org.apache.openjpa.kernel.exps">Avg</A>, <A HREF="../../../../../org/apache/openjpa/jdbc/kernel/exps/Avg.html" title="class in org.apache.openjpa.jdbc.kernel.exps">Avg</A>, <A HREF="../../../../../org/apache/openjpa/kernel/exps/BoundVariable.html" title="class in org.apache.openjpa.kernel.exps">BoundVariable</A>, <A HREF="../../../../../org/apache/openjpa/kernel/exps/CandidatePath.html" title="class in org.apache.openjpa.kernel.exps">CandidatePath</A>, <A HREF="../../../../../org/apache/openjpa/kernel/exps/Cast.html" title="class in org.apache.openjpa.kernel.exps">Cast</A>, <A HREF="../../../../../org/apache/openjpa/kernel/exps/Coalesce.html" title="class in org.apache.openjpa.kernel.exps">Coalesce</A>, <A HREF="../../../../../org/apache/openjpa/jdbc/kernel/exps/CoalesceExpression.html" title="class in org.apache.openjpa.jdbc.kernel.exps">CoalesceExpression</A>, <A HREF="../../../../../org/apache/openjpa/kernel/exps/CollectionParam.html" title="class in org.apache.openjpa.kernel.exps">CollectionParam</A>, <A HREF="../../../../../org/apache/openjpa/jdbc/kernel/exps/CollectionParam.html" title="class in 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title="class in org.apache.openjpa.jdbc.kernel.exps">GetObjectId</A>, <A HREF="../../../../../org/apache/openjpa/kernel/exps/Index.html" title="class in org.apache.openjpa.kernel.exps">Index</A>, <A HREF="../../../../../org/apache/openjpa/jdbc/kernel/exps/Index.html" title="class in org.apache.openjpa.jdbc.kernel.exps">Index</A>, <A HREF="../../../../../org/apache/openjpa/kernel/exps/IndexOf.html" title="class in org.apache.openjpa.kernel.exps">IndexOf</A>, <A HREF="../../../../../org/apache/openjpa/jdbc/kernel/exps/IndexOf.html" title="class in org.apache.openjpa.jdbc.kernel.exps">IndexOf</A>, <A HREF="../../../../../org/apache/openjpa/kernel/exps/Lit.html" title="class in org.apache.openjpa.kernel.exps">Lit</A>, <A HREF="../../../../../org/apache/openjpa/jdbc/kernel/exps/Lit.html" title="class in org.apache.openjpa.jdbc.kernel.exps">Lit</A>, <A HREF="../../../../../org/apache/openjpa/jdbc/kernel/exps/MapEntry.html" title="class in org.apache.openjpa.jdbc.kernel.exps">MapEntry</A>, <A 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</DL>
<HR>
<DL>
<DT><PRE>public interface <B>Value</B><DT>extends <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</A></DL>
</PRE>
<P>
Interface for any non-operator in a query filter, including
constants, variables, and object fields.
<P>
<P>
<DL>
<DT><B>Author:</B></DT>
<DD>Abe White</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;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/openjpa/kernel/exps/Value.html#acceptVisit(org.apache.openjpa.kernel.exps.ExpressionVisitor)">acceptVisit</A></B>(<A HREF="../../../../../org/apache/openjpa/kernel/exps/ExpressionVisitor.html" title="interface in org.apache.openjpa.kernel.exps">ExpressionVisitor</A>&nbsp;visitor)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accept a visit from a tree visitor.</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/j2se/1.5.0/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/openjpa/kernel/exps/Value.html#getAlias()">getAlias</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Return select item alias</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../../org/apache/openjpa/meta/ClassMetaData.html" title="class in org.apache.openjpa.meta">ClassMetaData</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/openjpa/kernel/exps/Value.html#getMetaData()">getMetaData</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Return any associated persistent type.</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/j2se/1.5.0/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/openjpa/kernel/exps/Value.html#getName()">getName</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../../org/apache/openjpa/kernel/exps/Path.html" title="interface in org.apache.openjpa.kernel.exps">Path</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/openjpa/kernel/exps/Value.html#getPath()">getPath</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../../org/apache/openjpa/kernel/exps/Value.html" title="interface in org.apache.openjpa.kernel.exps">Value</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/openjpa/kernel/exps/Value.html#getSelectAs()">getSelectAs</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Return 'this' concrete class if alias is set, otherwise null</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/j2se/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/openjpa/kernel/exps/Value.html#getType()">getType</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Return the expected type for this value, or <code>Object</code> if
the type is unknown.</TD>
</TR>
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<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/openjpa/kernel/exps/Value.html#isAggregate()">isAggregate</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Return true if this value is an aggregate.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/openjpa/kernel/exps/Value.html#isVariable()">isVariable</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Return true if this value is a variable.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/openjpa/kernel/exps/Value.html#isXPath()">isXPath</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Return true if this value is an XML Path.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/openjpa/kernel/exps/Value.html#setAlias(java.lang.String)">setAlias</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;alias)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set select item alias</TD>
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<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/openjpa/kernel/exps/Value.html#setImplicitType(java.lang.Class)">setImplicitType</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A>&nbsp;type)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the implicit type of the value, based on how it is used in the
filter.</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/openjpa/kernel/exps/Value.html#setMetaData(org.apache.openjpa.meta.ClassMetaData)">setMetaData</A></B>(<A HREF="../../../../../org/apache/openjpa/meta/ClassMetaData.html" title="class in org.apache.openjpa.meta">ClassMetaData</A>&nbsp;meta)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Associate a persistent type with this value.</TD>
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<A NAME="getType()"><!-- --></A><H3>
getType</H3>
<PRE>
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A> <B>getType</B>()</PRE>
<DL>
<DD>Return the expected type for this value, or <code>Object</code> if
the type is unknown.
<P>
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</DL>
</DD>
<DD><DL>
</DL>
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<A NAME="setImplicitType(java.lang.Class)"><!-- --></A><H3>
setImplicitType</H3>
<PRE>
void <B>setImplicitType</B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A>&nbsp;type)</PRE>
<DL>
<DD>Set the implicit type of the value, based on how it is used in the
filter. This method is only called on values who return
<code>Object</code> from <A HREF="../../../../../org/apache/openjpa/kernel/exps/Value.html#getType()"><CODE>getType()</CODE></A>.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="isVariable()"><!-- --></A><H3>
isVariable</H3>
<PRE>
boolean <B>isVariable</B>()</PRE>
<DL>
<DD>Return true if this value is a variable.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="isAggregate()"><!-- --></A><H3>
isAggregate</H3>
<PRE>
boolean <B>isAggregate</B>()</PRE>
<DL>
<DD>Return true if this value is an aggregate.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="isXPath()"><!-- --></A><H3>
isXPath</H3>
<PRE>
boolean <B>isXPath</B>()</PRE>
<DL>
<DD>Return true if this value is an XML Path.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getMetaData()"><!-- --></A><H3>
getMetaData</H3>
<PRE>
<A HREF="../../../../../org/apache/openjpa/meta/ClassMetaData.html" title="class in org.apache.openjpa.meta">ClassMetaData</A> <B>getMetaData</B>()</PRE>
<DL>
<DD>Return any associated persistent type.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="setMetaData(org.apache.openjpa.meta.ClassMetaData)"><!-- --></A><H3>
setMetaData</H3>
<PRE>
void <B>setMetaData</B>(<A HREF="../../../../../org/apache/openjpa/meta/ClassMetaData.html" title="class in org.apache.openjpa.meta">ClassMetaData</A>&nbsp;meta)</PRE>
<DL>
<DD>Associate a persistent type with this value.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="acceptVisit(org.apache.openjpa.kernel.exps.ExpressionVisitor)"><!-- --></A><H3>
acceptVisit</H3>
<PRE>
void <B>acceptVisit</B>(<A HREF="../../../../../org/apache/openjpa/kernel/exps/ExpressionVisitor.html" title="interface in org.apache.openjpa.kernel.exps">ExpressionVisitor</A>&nbsp;visitor)</PRE>
<DL>
<DD>Accept a visit from a tree visitor.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getAlias()"><!-- --></A><H3>
getAlias</H3>
<PRE>
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>getAlias</B>()</PRE>
<DL>
<DD>Return select item alias
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="setAlias(java.lang.String)"><!-- --></A><H3>
setAlias</H3>
<PRE>
void <B>setAlias</B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;alias)</PRE>
<DL>
<DD>Set select item alias
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getSelectAs()"><!-- --></A><H3>
getSelectAs</H3>
<PRE>
<A HREF="../../../../../org/apache/openjpa/kernel/exps/Value.html" title="interface in org.apache.openjpa.kernel.exps">Value</A> <B>getSelectAs</B>()</PRE>
<DL>
<DD>Return 'this' concrete class if alias is set, otherwise null
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getPath()"><!-- --></A><H3>
getPath</H3>
<PRE>
<A HREF="../../../../../org/apache/openjpa/kernel/exps/Path.html" title="interface in org.apache.openjpa.kernel.exps">Path</A> <B>getPath</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getName()"><!-- --></A><H3>
getName</H3>
<PRE>
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>getName</B>()</PRE>
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