[Geoserver-users] [SPAM] How to use gs:Query in sld??

[????????]

Hi:
   I want to use gs:Query in sld to cropCoverage.  
   Below sld  is not work;
   SLD:
   <?xml version="1.0" encoding="ISO-8859-1"?>
<StyledLayerDescriptor version="1.0.0"
     xsi:schemaLocation="http://www.opengis.net/sld StyledLayerDescriptor.xsd"
     xmlns="http://www.opengis.net/sld";
     xmlns:ogc="http://www.opengis.net/ogc";
     xmlns:xlink="http://www.w3.org/1999/xlink";
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";>
  <NamedLayer>
    <Name>CropCoverage</Name>
    <UserStyle>
      <Title>Crop Coverage</Title>
      <FeatureTypeStyle>
        <Transformation>
          <ogc:Function name="gs:CropCoverage">


            <ogc:Function name="parameter">
              <ogc:Literal>coverage</ogc:Literal>
            </ogc:Function>


             <ogc:Function name="parameter">
              <ogc:Literal>cropShape</ogc:Literal>
              <ogc:Function name="gs:CollectGeometries">
                <ogc:Function name="gs:Query">
                  <ogc:Literal>BpGeo:city</ogc:Literal>
                   <ogc:Literal>geom</ogc:Literal>
                   <ogc:Literal>INCLUDE</ogc:Literal>
                </ogc:Function>
               </ogc:Function>
             </ogc:Function>
            
          </ogc:Function>
        </Transformation>
        <Rule>
          <Name>rule1</Name>
          <RasterSymbolizer>
        </RasterSymbolizer>
      </Rule>
    </FeatureTypeStyle>
  </UserStyle>
</NamedLayer>
</StyledLayerDescriptor>
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