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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.4.2_13) on Tue Jun 05 11:36:26 GMT-05:00 2007 --><META http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><TITLE>MathExpression (Geotools 2.3.x 2.3.2 API)</TITLE><META NAME="keywords" CONTENT="org.geotools.filter.MathExpression interface"><META NAME="keywords" CONTENT="getValue()"><META NAME="keywords" CONTENT="addRightValue()"><META NAME="keywords" CONTENT="getType()"><META NAME="keywords" CONTENT="getLeftValue()"><META NAME="keywords" CONTENT="getRightValue()"><META NAME="keywords" CONTENT="addLeftValue()"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="MathExpression (Geotools 2.3.x 2.3.2 API)";}</SCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=3 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/MathExpression.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../org/geotools/filter/MapScaleDenominator.html" title="interface in org.geotools.filter"><B>PREV CLASS</B></A> <A HREF="../../../org/geotools/filter/NullFilter.html" title="interface in org.geotools.filter"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../index.html" target="_top"><B>FRAMES</B></A> <A HREF="MathExpression.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">org.geotools.filter</FONT><BR>Interface MathExpression</H2><DL><DT><B>All Superinterfaces:</B> <DD>BinaryExpression, Expression, <A HREF="../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A>, <A HREF="../../../org/geotools/filter/ExpressionType.html" title="interface in org.geotools.filter">ExpressionType</A></DD></DL><DL><DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../org/geotools/filter/MathExpressionImpl.html" title="class in org.geotools.filter">MathExpressionImpl</A></DD></DL><HR><B>Deprecated.</B> <I>use <CODE>BinaryExpression</CODE></I><P><DL><DT>public interface <B>MathExpression</B><DT>extends <A HREF="../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A>, BinaryExpression</DL><P>Holds a mathematical relationship between two expressions. Note that the sub expressions must be math expressions. In other words, they must be a math literal, another math expression, or a feature attribute with a declared math type. You may create math expressions of arbitrary complexity by nesting other math expressions as sub expressions in one or more math expressions. This filter defines left and right values to clarify the sub expression precedence for non-associative operations, such as subtraction and division. For example, the left value is the numerator and the right is the denominator in an ExpressionMath division operation.<P><P><DL><DT><B>Author:</B></DT> <DD>Rob Hranac, Vision for New York</DD><DT><B>Module:</B></DT><DD><CODE><B>module/api</B></CODE> (<A HREF="http://maven.geotools.fr/repository/org/geotools/gt2-api/"><CODE>gt2-api.jar</CODE></A>) (<A HREF="http://maven.geotools.fr/reports/api/index.html">Maven report</A>) (<A HREF="http://svn.geotools.org/geotools/tags/2.3.2/module/api/src/org/geotools/filter/MathExpression.java">SVN head</A>)</DD></DL><HR><P><!-- ======== NESTED CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><A NAME="field_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Field Summary</B></FONT></TD></TR></TABLE> <A NAME="fields_inherited_from_class_ExpressionType"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Fields inherited from interface <A HREF="../../../org/geotools/filter/ExpressionType.html" title="interface in org.geotools.filter">ExpressionType</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><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></TR></TABLE> <!-- ======== 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></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/geotools/filter/MathExpression.html#addLeftValue(org.geotools.filter.Expression)">addLeftValue</A></B>(<A HREF="../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A> leftValue)</CODE><BR> <B>Deprecated.</B> <I>use <CODE>BinaryExpression#setExpression1(Expression)</CODE></I></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/geotools/filter/MathExpression.html#addRightValue(org.geotools.filter.Expression)">addRightValue</A></B>(<A HREF="../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A> rightValue)</CODE><BR> <B>Deprecated.</B> <I>use <CODE>BinaryExpression#setExpression2(Expression)</CODE></I></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <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/MathExpression.html#getLeftValue()">getLeftValue</A></B>()</CODE><BR> <B>Deprecated.</B> <I>use <CODE>BinaryExpression.getExpression1()</CODE>.</I></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <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/MathExpression.html#getRightValue()">getRightValue</A></B>()</CODE><BR> <B>Deprecated.</B> <I>use <CODE>BinaryExpression.getExpression2()</CODE>.</I></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> short</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/geotools/filter/MathExpression.html#getType()">getType</A></B>()</CODE><BR> <B>Deprecated.</B> <I>The expression type system has been replaced by an actual class type system.</I></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/geotools/filter/MathExpression.html#getValue(org.geotools.feature.Feature)">getValue</A></B>(<A HREF="../../../org/geotools/feature/Feature.html" title="interface in org.geotools.feature">Feature</A> feature)</CODE><BR> <B>Deprecated.</B> <I>use <A HREF="../../../org/geotools/filter/Expression.html#evaluate(org.geotools.feature.Feature)"><CODE>Expression.evaluate(Feature)</CODE></A>.</I></TD></TR></TABLE> <A NAME="methods_inherited_from_class_Expression"><!-- --></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/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></CODE></TD></TR>⌨️ 快捷键说明
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