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Re: Antwort: [udig-devel] How to add a filter to a SLD rule?
Ack,  I had a response partially written for you but forgot to finish it.  Sorry about that.  If you could do me a favour.  I'd appreciate a little code snippet for this that I can put in our code snippets directory.  You can see the existing code snippets at:


Jesse

On 6-Mar-07, at 12:36 AM, tony.roth@xxxxxx wrote:

I found some useful hints on
 
sorry, next time I will first check the documentation :)
 
tony roth

Hi list,
I have a layer (geo resource based on a shape file) with point elements and I want them symbolized by different symbols. The grouping is based on an attribute (given by the db file). I have read how it looks like in the SLD xml with the ogc:filter elements and its children but I have no idea how to realize the right filter for <ogc: PropertyIsEqualTo>
I guess I have to do this: For every group I generate the org.geotools.styling.Rule with PointSymbolizer and perhaps TextSymbolizer and then I have to add a filter with rule.setFilter(Filter filter). The Filter I have to generate with FilterFactoryFinder.createFilterFactory().create... but which kind of filter? Is it an attributeExpression (since I want to filter one of the attributes) or a Logic Filter?
Finally I have one rule for each value and then I generate the FeatureTypeStyle based on these rules.
I need help with the filter. The attribute is called "objecttype" and the attribute values are characters.
Thank you!
tony roth
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