mathexpressionimpl.html

Geotools是一个开源的Java GIS工具包,可利用它来开发符合标准的地理信息系统。Geotools提供了OGC(Open Geospatial Consortium)规范的一个实现来作为他们的

 set. </TD>
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<CODE>abstract &nbsp;<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/MathExpressionImpl.html#evaluate(org.geotools.feature.Feature)">evaluate</A></B>(<A HREF="../../../org/geotools/feature/Feature.html" title="interface in org.geotools.feature">Feature</A>&nbsp;feature)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the value for this expression.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;Expression</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/filter/MathExpressionImpl.html#getExpression1()">getExpression1</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the left or first expression.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;Expression</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/filter/MathExpressionImpl.html#getExpression2()">getExpression2</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the second expression.</TD>
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<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/MathExpressionImpl.html#getLeftValue()">getLeftValue</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>use <A HREF="../../../org/geotools/filter/MathExpressionImpl.html#getExpression1()"><CODE>getExpression1()</CODE></A>.</I></TD>
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<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/MathExpressionImpl.html#getRightValue()">getRightValue</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>use <A HREF="../../../org/geotools/filter/MathExpressionImpl.html#getExpression2()"><CODE>getExpression2()</CODE></A>.</I></TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;short</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/filter/MathExpressionImpl.html#getType()">getType</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&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>protected &nbsp;<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/MathExpressionImpl.html#number(double)">number</A></B>(double&nbsp;number)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</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/geotools/filter/MathExpressionImpl.html#setExpression1(org.opengis.filter.expression.Expression)">setExpression1</A></B>(Expression&nbsp;expression)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the left or first 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/MathExpressionImpl.html#setExpression2(org.opengis.filter.expression.Expression)">setExpression2</A></B>(Expression&nbsp;expression)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the second expression.</TD>
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&nbsp;<A NAME="methods_inherited_from_class_DefaultExpression"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class <A HREF="../../../org/geotools/filter/DefaultExpression.html" title="class in org.geotools.filter">DefaultExpression</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../org/geotools/filter/DefaultExpression.html#accept(org.geotools.filter.FilterVisitor)">accept</A>, <A HREF="../../../org/geotools/filter/DefaultExpression.html#evaluate(java.lang.Object)">evaluate</A>, <A HREF="../../../org/geotools/filter/DefaultExpression.html#getValue(org.geotools.feature.Feature)">getValue</A>, <A HREF="../../../org/geotools/filter/DefaultExpression.html#isAttributeExpression(short)">isAttributeExpression</A>, <A HREF="../../../org/geotools/filter/DefaultExpression.html#isExpression(short)">isExpression</A>, <A HREF="../../../org/geotools/filter/DefaultExpression.html#isFunctionExpression(short)">isFunctionExpression</A>, <A HREF="../../../org/geotools/filter/DefaultExpression.html#isGeometryExpression(short)">isGeometryExpression</A>, <A HREF="../../../org/geotools/filter/DefaultExpression.html#isLiteralExpression(short)">isLiteralExpression</A>, <A HREF="../../../org/geotools/filter/DefaultExpression.html#isMathExpression(org.opengis.filter.expression.Expression)">isMathExpression</A>, <A HREF="../../../org/geotools/filter/DefaultExpression.html#isMathExpression(short)">isMathExpression</A></CODE></TD>
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&nbsp;<A NAME="methods_inherited_from_class_ExpressionAbstract"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class <A HREF="../../../org/geotools/filter/expression/ExpressionAbstract.html" title="class in org.geotools.filter.expression">ExpressionAbstract</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../org/geotools/filter/expression/ExpressionAbstract.html#accept(org.opengis.filter.expression.ExpressionVisitor, java.lang.Object)">accept</A>, <A HREF="../../../org/geotools/filter/expression/ExpressionAbstract.html#eval(org.geotools.filter.Expression, org.geotools.feature.Feature)">eval</A></CODE></TD>
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&nbsp;<A NAME="methods_inherited_from_class_Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class <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></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
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&nbsp;<A NAME="methods_inherited_from_class_MathExpression"><!-- --></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/MathExpression.html" title="interface in org.geotools.filter">MathExpression</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../org/geotools/filter/MathExpression.html#getValue(org.geotools.feature.Feature)">getValue</A></CODE></TD>
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</TABLE>
&nbsp;<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></CODE></TD>
</TR>
</TABLE>
&nbsp;<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 Expression</B></TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>accept, evaluate</CODE></TD>
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<!-- ============ FIELD DETAIL =========== -->


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

<A NAME="constructor_detail"><!-- --></A>
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<B>Constructor Detail</B></FONT></TD>
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</TABLE>

<A NAME="MathExpressionImpl()"><!-- --></A><H3>
MathExpressionImpl</H3>
<PRE>
protected <B>MathExpressionImpl</B>()</PRE>
<DL>
<DD>No argument constructor.
<P>
</DL>
<HR>

<A NAME="MathExpressionImpl(org.opengis.filter.expression.Expression, org.opengis.filter.expression.Expression)"><!-- --></A><H3>
MathExpressionImpl</H3>
<PRE>
protected <B>MathExpressionImpl</B>(Expression&nbsp;e1,
                             Expression&nbsp;e2)</PRE>
<DL>
</DL>

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

<A NAME="method_detail"><!-- --></A>
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<B>Method Detail</B></FONT></TD>
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<A NAME="addLeftValue(org.geotools.filter.Expression)"><!-- --></A><H3>
addLeftValue</H3>
<PRE>
public final void <B>addLeftValue</B>(<A HREF="../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A>&nbsp;leftValue)
                        throws <A HREF="../../../org/geotools/filter/IllegalFilterException.html" title="class in org.geotools.filter">IllegalFilterException</A></PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<I>use <A HREF="../../../org/geotools/filter/MathExpressionImpl.html#setExpression1(org.opengis.filter.expression.Expression)"><CODE>setExpression1(org.opengis.filter.expression.Expression)</CODE></A></I>
<P>
<DD>Adds the 'left' value to this expression.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/filter/MathExpression.html#addLeftValue(org.geotools.filter.Expression)">addLeftValue</A></CODE> in interface <CODE><A HREF="../../../org/geotools/filter/MathExpression.html" title="interface in org.geotools.filter">MathExpression</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>leftValue</CODE> - Expression to add to this expression.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../org/geotools/filter/IllegalFilterException.html" title="class in org.geotools.filter">IllegalFilterException</A></CODE> - Attempting to add non-math expression.</DL>
</DD>
</DL>
<HR>

<A NAME="addRightValue(org.geotools.filter.Expression)"><!-- --></A><H3>
addRightValue</H3>
<PRE>
public final void <B>addRightValue</B>(<A HREF="../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A>&nbsp;rightValue)
                         throws <A HREF="../../../org/geotools/filter/IllegalFilterException.html" title="class in org.geotools.filter">IllegalFilterException</A></PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<I>use <A HREF="../../../org/geotools/filter/MathExpressionImpl.html#setExpression2(org.opengis.filter.expression.Expression)"><CODE>setExpression2(org.opengis.filter.expression.Expression)</CODE></A></I>
<P>
<DD>Adds the 'right' value to this expression.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/filter/MathExpression.html#addRightValue(org.geotools.filter.Expression)">addRightValue</A></CODE> in interface <CODE><A HREF="../../../org/geotools/filter/MathExpression.html" title="interface in org.geotools.filter">MathExpression</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>rightValue</CODE> - Expression to add to this expression.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../org/geotools/filter/IllegalFilterException.html" title="class in org.geotools.filter">IllegalFilterException</A></CODE> - Attempting to add non-math expression.</DL>
</DD>
</DL>
<HR>

<A NAME="getLeftValue()"><!-- --></A><H3>
getLeftValue</H3>
<PRE>
public final <A HREF="../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A> <B>getLeftValue</B>()</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<I>use <A HREF="../../../org/geotools/filter/MathExpressionImpl.html#getExpression1()"><CODE>getExpression1()</CODE></A>.</I>
<P>
<DD>Gets the left or first expression.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/filter/MathExpression.html#getLeftValue()">getLeftValue</A></CODE> in interface <CODE><A HREF="../../../org/geotools/filter/MathExpression.html" title="interface in org.geotools.filter">MathExpression</A></CODE></DL>
</DD>
<DD><DL>