| [geomesa-users] GeoServer SLD style filter problem with latest GeoMesa |
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Hi, We just installed the latest GeoMesa earlier this week and we have noticed a new GeoServer/WMS related problem that did not exist in either the mid-June version of GeoMesa or the January version of GeoMesa. We are using GeoServer 2.5 and
GeoTools 11.0. I am using an SLD style for generating choropleth images (similar to a heat map) based upon GeoMesa-indexed data. I want all null data to be ignored when I create my choropleth images, and prior to the most recent GeoMesa, I could successfully
ignore null data if I did something analogous to the following in my SLD file: <?xml version="1.0" encoding="UTF-8"?><sld:StyledLayerDescriptor xmlns="http://www.opengis.net/sld" xmlns:sld="http://www.opengis.net/sld" xmlns:ogc="http://www.opengis.net/ogc" xmlns:gml="http://www.opengis.net/gml" version="1.0.0"> <sld:NamedLayer> <sld:Name>Default Styler</sld:Name> <sld:UserStyle> <sld:Name>Default Styler</sld:Name> <sld:Title>Example Title</sld:Title> <sld:FeatureTypeStyle> <sld:Name>name</sld:Name> <sld:Rule> <sld:Name>ExampleName</sld:Name> <ogc:Filter> <ogc:PropertyIsEqualTo> <ogc:Function name="isNull"> <ogc:Function name="property"> <ogc:Function name="env"> <ogc:Literal>attribute</ogc:Literal> <ogc:Literal>SpecificAttribute</ogc:Literal> </ogc:Function> </ogc:Function> </ogc:Function> <ogc:Literal>false</ogc:Literal> </ogc:PropertyIsEqualTo> </ogc:Filter> <sld:MaxScaleDenominator>1000000.0</sld:MaxScaleDenominator> <sld:PolygonSymbolizer> … I should note that I am using SLD variable substitution for the “attribute” so that I can use the same SLD style for generating choropleth images based on different attributes (using separate WMS calls).
When I use the above style, GeoServer does not produce an image. It seems to have a problem with the <ogc:Filter> portion of the style. If I remove the <ogc:Filter> portion of the SLD style, the style works on attributes that do not have
null data. Is this problem a GeoMesa-related bug? Or have we integrated the latest GeoMesa incorrectly with GeoServer? What changes have been made since mid-June that could cause this problem? In case it helps, the following SLD filter worked in the January version of GeoMesa, but did not work in the mid-June version. I assumed that it was due to the GeoServer version changing, but now I am not so sure it wasn’t GeoMesa-related.
When I noticed that this did not work in the mid-June version, I removed the “equalTo” portion of the filter and instead created two SLD styles (my preference was to have one style, which is what I had when I used the January version). <ogc:Filter> <ogc:And> <ogc:PropertyIsEqualTo> <ogc:Function name="equalTo"> <ogc:Function name="env"> <ogc:Literal>attribute</ogc:Literal> <ogc:Literal>SpecificAttribute</ogc:Literal> </ogc:Function> <ogc:Literal>SpecificAttribute</ogc:Literal>
</ogc:Function> <ogc:Literal>false</ogc:Literal> </ogc:PropertyIsEqualTo> <ogc:PropertyIsEqualTo> <ogc:Function name="isNull"> <ogc:Function name="property"> <ogc:Function name="env"> <ogc:Literal>attribute</ogc:Literal> <ogc:Literal>SpecificAttribute</ogc:Literal> </ogc:Function> </ogc:Function> </ogc:Function> <ogc:Literal>false</ogc:Literal> </ogc:PropertyIsEqualTo> </ogc:And> </ogc:Filter> Any ideas? Thanks, Beau |