expression.html

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<DD><B>Deprecated.</B>&nbsp;<DD>Evaluates the expression against an instance of <A HREF="../../../org/geotools/feature/Feature.html" title="interface in org.geotools.feature"><CODE>Feature</CODE></A>.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>feature</CODE> - The feature being evaluated.
<DT><B>Returns:</B><DD>The result.</DL>
</DD>
</DL>
<HR>

<A NAME="getValue(org.geotools.feature.Feature)"><!-- --></A><H3>
getValue</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <B>getValue</B>(<A HREF="../../../org/geotools/feature/Feature.html" title="interface in org.geotools.feature">Feature</A>&nbsp;feature)</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<I>use <CODE>org.opengis.filter.expression.Expression#evaluate(Feature)</CODE></I>
<P>
<DD>Returns a value for this expression.  The feature argument is used if a
 feature is needed to evaluate the expression, as in the case of an
 AttributeExpression.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>feature</CODE> - Specified feature to use when returning value.   Some
        expressions, such as LiteralExpressions, may ignore this as it
        does not affect their return value.
<DT><B>Returns:</B><DD>Value of the expression, evaluated with the feature object if
         necessary.</DL>
</DD>
</DL>
<HR>

<A NAME="accept(org.geotools.filter.FilterVisitor)"><!-- --></A><H3>
accept</H3>
<PRE>
public void <B>accept</B>(<A HREF="../../../org/geotools/filter/FilterVisitor.html" title="interface in org.geotools.filter">FilterVisitor</A>&nbsp;visitor)</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<I>use use <CODE>Expression.accept(ExpressionVisitor, Object)</CODE></I>
<P>
<DD>Used by FilterVisitors to perform some action on this filter instance.
 Typicaly used by Filter decoders, but may also be used by any thing
 which needs infomration from filter structure. Implementations should
 always call: visitor.visit(this); It is importatant that this is not
 left to a parent class unless the parents API is identical.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>visitor</CODE> - The visitor which requires access to this filter, the
        method must call visitor.visit(this);</DL>
</DD>
</DL>
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