expression.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

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This class is actualy a place holder.  </TD>
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<CODE>&nbsp;class</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/filter/MathExpressionImpl.html" title="class in org.geotools.filter">MathExpressionImpl</A></B></CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Holds a mathematical relationship between two expressions. </TD>
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<CODE>&nbsp;class</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/filter/MaxFunction.html" title="class in org.geotools.filter">MaxFunction</A></B></CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>- use org.geotools.filter.function.math.MinFunction instead</I></TD>
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<CODE>&nbsp;class</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/filter/MinFunction.html" title="class in org.geotools.filter">MinFunction</A></B></CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>- use org.geotools.filter.function.math.MinFunction instead</I></TD>
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<TD COLSPAN=2>Methods in <A HREF="../../../../org/geotools/filter/package-summary.html">org.geotools.filter</A> that return <A HREF="../../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A></FONT></TD>
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<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>IsBetweenImpl.</B><B><A HREF="../../../../org/geotools/filter/IsBetweenImpl.html#getMiddleValue()">getMiddleValue</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>use <A HREF="../../../../org/geotools/filter/IsBetweenImpl.html#getExpression()"><CODE>IsBetweenImpl.getExpression()</CODE></A></I></TD>
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<CODE>static&nbsp;<A HREF="../../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A></CODE></FONT></TD>
<TD><CODE><B>ExpressionDOMParser.</B><B><A HREF="../../../../org/geotools/filter/ExpressionDOMParser.html#parseExpression(org.w3c.dom.Node)">parseExpression</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/org/w3c/dom/Node.html" title="class or interface in org.w3c.dom">Node</A>&nbsp;root)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>Please use ExpressionDOMParser.expression</I></TD>
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<CODE>&nbsp;<A HREF="../../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A></CODE></FONT></TD>
<TD><CODE><B>ExpressionDOMParser.</B><B><A HREF="../../../../org/geotools/filter/ExpressionDOMParser.html#expression(org.w3c.dom.Node)">expression</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/org/w3c/dom/Node.html" title="class or interface in org.w3c.dom">Node</A>&nbsp;root)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;parses an expression for a filter.</TD>
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<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>LikeFilterImpl.</B><B><A HREF="../../../../org/geotools/filter/LikeFilterImpl.html#getValue()">getValue</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>use <A HREF="../../../../org/geotools/filter/LikeFilterImpl.html#getExpression()"><CODE>LikeFilterImpl.getExpression()</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>BetweenFilterImpl.</B><B><A HREF="../../../../org/geotools/filter/BetweenFilterImpl.html#getMiddleValue()">getMiddleValue</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>use <A HREF="../../../../org/geotools/filter/BetweenFilterImpl.html#getExpression()"><CODE>BetweenFilterImpl.getExpression()</CODE></A></I></TD>
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<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>MaxFunction.</B><B><A HREF="../../../../org/geotools/filter/MaxFunction.html#getArgs()">getArgs</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;Gets the arguments to be evaluated by this function.</TD>
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<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>MathExpressionImpl.</B><B><A HREF="../../../../org/geotools/filter/MathExpressionImpl.html#getLeftValue()">getLeftValue</A></B>()</CODE>

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&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>MathExpressionImpl.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>MathExpressionImpl.</B><B><A HREF="../../../../org/geotools/filter/MathExpressionImpl.html#getRightValue()">getRightValue</A></B>()</CODE>

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&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>MathExpressionImpl.getExpression2()</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>IsNullImpl.</B><B><A HREF="../../../../org/geotools/filter/IsNullImpl.html#getNullCheckValue()">getNullCheckValue</A></B>()</CODE>

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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>MinFunction.</B><B><A HREF="../../../../org/geotools/filter/MinFunction.html#getArgs()">getArgs</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;Gets the arguments to be evaluated by this function.</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>GeometryFilterImpl.</B><B><A HREF="../../../../org/geotools/filter/GeometryFilterImpl.html#getLeftGeometry()">getLeftGeometry</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>use <CODE>BinarySpatialOperator.getExpression1()</CODE></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>GeometryFilterImpl.</B><B><A HREF="../../../../org/geotools/filter/GeometryFilterImpl.html#getRightGeometry()">getRightGeometry</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>use <CODE>BinarySpatialOperator.getExpression2()</CODE></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>FunctionExpressionImpl.</B><B><A HREF="../../../../org/geotools/filter/FunctionExpressionImpl.html#getArgs()">getArgs</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>use <A HREF="../../../../org/geotools/filter/FunctionExpressionImpl.html#getParameters()"><CODE>FunctionExpressionImpl.getParameters()</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>LengthFunction.</B><B><A HREF="../../../../org/geotools/filter/LengthFunction.html#getArgs()">getArgs</A></B>()</CODE>

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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>ExpressionSAXParser.</B><B><A HREF="../../../../org/geotools/filter/ExpressionSAXParser.html#create()">create</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Creates and returns the 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>AreaFunction.</B><B><A HREF="../../../../org/geotools/filter/AreaFunction.html#getArgs()">getArgs</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Used by FilterVisitors to perform some action on this filter instance.
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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>CompareFilterImpl.</B><B><A HREF="../../../../org/geotools/filter/CompareFilterImpl.html#getLeftValue()">getLeftValue</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the left 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>CompareFilterImpl.</B><B><A HREF="../../../../org/geotools/filter/CompareFilterImpl.html#getRightValue()">getRightValue</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>use <A HREF="../../../../org/geotools/filter/BinaryComparisonAbstract.html#getExpression2()"><CODE>BinaryComparisonAbstract.getExpression2()</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>NullFilterImpl.</B><B><A HREF="../../../../org/geotools/filter/NullFilterImpl.html#getNullCheckValue()">getNullCheckValue</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>use <A HREF="../../../../org/geotools/filter/NullFilterImpl.html#getExpression()"><CODE>NullFilterImpl.getExpression()</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>SortBy2.</B><B><A HREF="../../../../org/geotools/filter/SortBy2.html#getExpression()">getExpression</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;GeoTools allows for more pervase use of Expression then is strictly
 supported by the specification.</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>BetweenFilter.</B><B><A HREF="../../../../org/geotools/filter/BetweenFilter.html#getMiddleValue()">getMiddleValue</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>use <CODE>PropertyIsBetween.getExpression()</CODE></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>GeometryFilter.</B><B><A HREF="../../../../org/geotools/filter/GeometryFilter.html#getRightGeometry()">getRightGeometry</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>use <CODE>BinarySpatialOperator.getExpression2()</CODE>.</I></TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">