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

<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#getLeftGeometry()">getLeftGeometry</A></B>()</CODE>

<BR>
&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>MathExpression.</B><B><A HREF="../../../../org/geotools/filter/MathExpression.html#getLeftValue()">getLeftValue</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<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>&nbsp;<A HREF="../../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A></CODE></FONT></TD>
<TD><CODE><B>MathExpression.</B><B><A HREF="../../../../org/geotools/filter/MathExpression.html#getRightValue()">getRightValue</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>use <CODE>BinaryExpression.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>FunctionExpression.</B><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>
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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>CompareFilter.</B><B><A HREF="../../../../org/geotools/filter/CompareFilter.html#getLeftValue()">getLeftValue</A></B>()</CODE>

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

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>use <CODE>BinaryComparisonOperator.getExpression2()</CODE></I></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>LikeFilter.</B><B><A HREF="../../../../org/geotools/filter/LikeFilter.html#getValue()">getValue</A></B>()</CODE>

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

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>use <CODE>PropertyIsNull.getExpression()</CODE></I></TD>
</TR>
</TABLE>
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<P>

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<TR BGCOLOR="#CCCCFF" CLASS="TableSubHeadingColor">
<TD COLSPAN=2>Methods in <A HREF="../../../../org/geotools/filter/package-summary.html">org.geotools.filter</A> with parameters of type <A HREF="../../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A></FONT></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>IsBetweenImpl.</B><B><A HREF="../../../../org/geotools/filter/IsBetweenImpl.html#addMiddleValue(org.geotools.filter.Expression)">addMiddleValue</A></B>(<A HREF="../../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A>&nbsp;middleValue)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>use <A HREF="../../../../org/geotools/filter/IsBetweenImpl.html#setExpression(org.opengis.filter.expression.Expression)"><CODE>IsBetweenImpl.setExpression(Expression)</CODE></A></I></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>FilterAbstract.</B><B><A HREF="../../../../org/geotools/filter/FilterAbstract.html#eval(org.geotools.filter.Expression, org.geotools.feature.Feature)">eval</A></B>(<A HREF="../../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A>&nbsp;expression,
     <A HREF="../../../../org/geotools/feature/Feature.html" title="interface in org.geotools.feature">Feature</A>&nbsp;feature)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Helper method for subclasses to reduce null checks</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>LikeFilterImpl.</B><B><A HREF="../../../../org/geotools/filter/LikeFilterImpl.html#setValue(org.geotools.filter.Expression)">setValue</A></B>(<A HREF="../../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A>&nbsp;attribute)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the expression to be evalutated as being like the pattern</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>LikeFilterImpl.</B><B><A HREF="../../../../org/geotools/filter/LikeFilterImpl.html#setPattern(org.geotools.filter.Expression, java.lang.String, java.lang.String, java.lang.String)">setPattern</A></B>(<A HREF="../../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A>&nbsp;p,
           <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;wildcardMulti,
           <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;wildcardSingle,
           <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;escape)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>use one of 
 	<CODE>PropertyIsLike#setExpression(Expression)</CODE>
 	<CODE>PropertyIsLike#setWildCard(String)</CODE>
 	<CODE>PropertyIsLike#setSingleChar(String)</CODE>
 	<CODE>PropertyIsLike#setEscape(String)</CODE></I></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B>BetweenFilterImpl.</B><B><A HREF="../../../../org/geotools/filter/BetweenFilterImpl.html#addMiddleValue(org.geotools.filter.Expression)">addMiddleValue</A></B>(<A HREF="../../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A>&nbsp;middleValue)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>use <A HREF="../../../../org/geotools/filter/BetweenFilterImpl.html#setExpression(org.opengis.filter.expression.Expression)"><CODE>BetweenFilterImpl.setExpression(org.opengis.filter.expression.Expression)</CODE></A></I></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B>FilterTransformer.FilterTranslator.</B><B><A HREF="../../../../org/geotools/filter/FilterTransformer.FilterTranslator.html#visit(org.geotools.filter.Expression)">visit</A></B>(<A HREF="../../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A>&nbsp;expression)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</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>FilterTransformer.FilterTranslator.</B><B><A HREF="../../../../org/geotools/filter/FilterTransformer.FilterTranslator.html#encode(org.geotools.filter.Expression)">encode</A></B>(<A HREF="../../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A>&nbsp;e)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</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>MaxFunction.</B><B><A HREF="../../../../org/geotools/filter/MaxFunction.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;Sets 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;void</CODE></FONT></TD>
<TD><CODE><B>MathExpressionImpl.</B><B><A HREF="../../../../org/geotools/filter/MathExpressionImpl.html#addLeftValue(org.geotools.filter.Expression)">addLeftValue</A></B>(<A HREF="../../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A>&nbsp;leftValue)</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#setExpression1(org.opengis.filter.expression.Expression)"><CODE>MathExpressionImpl.setExpression1(org.opengis.filter.expression.Expression)</CODE></A></I></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B>MathExpressionImpl.</B><B><A HREF="../../../../org/geotools/filter/MathExpressionImpl.html#addRightValue(org.geotools.filter.Expression)">addRightValue</A></B>(<A HREF="../../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A>&nbsp;rightValue)</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#setExpression2(org.opengis.filter.expression.Expression)"><CODE>MathExpressionImpl.setExpression2(org.opengis.filter.expression.Expression)</CODE></A></I></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B>SQLEncoder.</B><B><A HREF="../../../../org/geotools/filter/SQLEncoder.html#visit(org.geotools.filter.Expression)">visit</A></B>(<A HREF="../../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A>&nbsp;expression)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Writes the SQL for the attribute Expression.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B>FilterSAXParser.</B><B><A HREF="../../../../org/geotools/filter/FilterSAXParser.html#expression(org.geotools.filter.Expression)">expression</A></B>(<A HREF="../../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A>&nbsp;expression)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Adds the passed in expression to the current filter.  </TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B>IsNullImpl.</B><B><A HREF="../../../../org/geotools/filter/IsNullImpl.html#nullCheckValue(org.geotools.filter.Expression)">nullCheckValue</A></B>(<A HREF="../../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A>&nbsp;nullCheck)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B>MinFunction.</B><B><A HREF="../../../../org/geotools/filter/MinFunction.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;Sets the arguments to be evaluated by this function.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B>GeometryFilterImpl.</B><B><A HREF="../../../../org/geotools/filter/GeometryFilterImpl.html#addLeftGeometry(org.geotools.filter.Expression)">addLeftGeometry</A></B>(<A HREF="../../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A>&nbsp;leftGeometry)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>use <A HREF="../../../../org/geotools/filter/GeometryFilterImpl.html#setExpression1(org.opengis.filter.expression.Expression)"><CODE>GeometryFilterImpl.setExpression1(org.opengis.filter.expression.Expression)</CODE></A></I></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B>GeometryFilterImpl.</B><B><A HREF="../../../../org/geotools/filter/GeometryFilterImpl.html#addRightGeometry(org.geotools.filter.Expression)">addRightGeometry</A></B>(<A HREF="../../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A>&nbsp;rightGeometry)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>use <CODE>#set</CODE></I></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B>FunctionExpressionImpl.</B><B><A HREF="../../../../org/geotools/filter/FunctionExpressionImpl.html#setArgs(org.geotools.filter.Expression[])">setArgs</A></B>(<A HREF="../../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Exp