functionexpression.html

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<TD><CODE><A HREF="../../../org/geotools/filter/ExpressionType.html#ATTRIBUTE">ATTRIBUTE</A>, <A HREF="../../../org/geotools/filter/ExpressionType.html#ATTRIBUTE_DOUBLE">ATTRIBUTE_DOUBLE</A>, <A HREF="../../../org/geotools/filter/ExpressionType.html#ATTRIBUTE_GEOMETRY">ATTRIBUTE_GEOMETRY</A>, <A HREF="../../../org/geotools/filter/ExpressionType.html#ATTRIBUTE_INTEGER">ATTRIBUTE_INTEGER</A>, <A HREF="../../../org/geotools/filter/ExpressionType.html#ATTRIBUTE_STRING">ATTRIBUTE_STRING</A>, <A HREF="../../../org/geotools/filter/ExpressionType.html#ATTRIBUTE_UNDECLARED">ATTRIBUTE_UNDECLARED</A>, <A HREF="../../../org/geotools/filter/ExpressionType.html#FUNCTION">FUNCTION</A>, <A HREF="../../../org/geotools/filter/ExpressionType.html#LITERAL_BOOLEAN">LITERAL_BOOLEAN</A>, <A HREF="../../../org/geotools/filter/ExpressionType.html#LITERAL_DATE">LITERAL_DATE</A>, <A HREF="../../../org/geotools/filter/ExpressionType.html#LITERAL_DOUBLE">LITERAL_DOUBLE</A>, <A HREF="../../../org/geotools/filter/ExpressionType.html#LITERAL_GEOMETRY">LITERAL_GEOMETRY</A>, <A HREF="../../../org/geotools/filter/ExpressionType.html#LITERAL_INTEGER">LITERAL_INTEGER</A>, <A HREF="../../../org/geotools/filter/ExpressionType.html#LITERAL_LONG">LITERAL_LONG</A>, <A HREF="../../../org/geotools/filter/ExpressionType.html#LITERAL_STRING">LITERAL_STRING</A>, <A HREF="../../../org/geotools/filter/ExpressionType.html#MATH_ADD">MATH_ADD</A>, <A HREF="../../../org/geotools/filter/ExpressionType.html#MATH_DIVIDE">MATH_DIVIDE</A>, <A HREF="../../../org/geotools/filter/ExpressionType.html#MATH_MULTIPLY">MATH_MULTIPLY</A>, <A HREF="../../../org/geotools/filter/ExpressionType.html#MATH_SUBTRACT">MATH_SUBTRACT</A></CODE></TD>
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<!-- ======== CONSTRUCTOR SUMMARY ======== -->


<!-- ========== METHOD SUMMARY =========== -->

<A NAME="method_summary"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TD COLSPAN=2><FONT SIZE="+2">
<B>Method Summary</B></FONT></TD>
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<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/geotools/filter/FunctionExpression.html#getArgCount()">getArgCount</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;Returns the number of arguments this <Function> requires.

   </TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A>[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/filter/FunctionExpression.html#getArgs()">getArgs</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>use <CODE>Function.getParameters()</CODE></I></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/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/filter/FunctionExpression.html#getName()">getName</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;Gets the name of this function.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;short</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/filter/FunctionExpression.html#getType()">getType</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;Gets the type of this expression.</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/geotools/filter/FunctionExpression.html#setArgs(org.geotools.filter.Expression[])">setArgs</A></B>(<A HREF="../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A>[]&nbsp;args)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>use <CODE>Function#setParameters(List)</CODE></I></TD>
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&nbsp;<A NAME="methods_inherited_from_class_Expression"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TD><B>Methods inherited from interface <A HREF="../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../org/geotools/filter/Expression.html#accept(org.geotools.filter.FilterVisitor)">accept</A>, <A HREF="../../../org/geotools/filter/Expression.html#evaluate(org.geotools.feature.Feature)">evaluate</A>, <A HREF="../../../org/geotools/filter/Expression.html#getValue(org.geotools.feature.Feature)">getValue</A></CODE></TD>
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&nbsp;<A NAME="methods_inherited_from_class_Expression"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TD><B>Methods inherited from interface Expression</B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>accept, evaluate</CODE></TD>
</TR>
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&nbsp;<A NAME="methods_inherited_from_class_Factory"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from interface <A HREF="../../../org/geotools/factory/Factory.html" title="interface in org.geotools.factory">Factory</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../org/geotools/factory/Factory.html#getImplementationHints()">getImplementationHints</A></CODE></TD>
</TR>
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&nbsp;<A NAME="methods_inherited_from_class_Function"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from interface Function</B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>getParameters</CODE></TD>
</TR>
</TABLE>
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<P>

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


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


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

<A NAME="method_detail"><!-- --></A>
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<B>Method Detail</B></FONT></TD>
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<A NAME="getArgCount()"><!-- --></A><H3>
getArgCount</H3>
<PRE>
public int <B>getArgCount</B>()</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<DD>Returns the number of arguments this <Function> requires.

   For example <Function name="strCat"> [arg1][arg2]</Function>.
   This function must have EXACTLY 2 arguments, so this function
   would return 2.

   The parser might use this information to ensure validity,
   and its also for reporting <Function> capabilities.

  NOTE: this was previously javadoc-ed incorrectly, please note
        the new definition.
  NOTE: you cannot have a function with a variable number of
        arguments.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the number of args required by this function.</DL>