Excellent - good to hear you're in business Sergey.
Michael
On 6 July 2011 19:18, LSA <l...@ngs.ru> wrote:
> I used approach with EnvFunction.setGlobalValue("simple",
> simpleFeatureFilter ) and it worked like a charm.
>
> One small notice, I used GUIDs instead of "simple", because in our
> applications we have many renderers sometimes.
>
> Thank you very much,
> Sergey
>
> On 05.07.2011 18:28, Jody Garnett wrote:
>>
>> In your calling code you have a choice....
>>
>> static ISimpleFeatureFilter SIMPLE_FILTER = ....
>> Filter filter = ff.equals( ff.function( "wrapper", ff.literal(
>> SIMPLE_FILTER ) ), ff.literal( Boolean.TRUE ) );
>>
>> 1) Your ISimpleFeatureFilter is handed as an literal and thus can be
>> copied when Style needs to look at it
>> 2) It does not (and your original does not) indicate to the rendering
>> system what attributes it wants the feature to have; so they may not be
>> requested (and the feature could be full of empty null values at runtime).
>> Just so you know ...
>>
>> The other thing you could do is use an environment variable ...
>> http://docs.geotools.org/latest/javadocs/org/geotools/filter/function/EnvFunction.html
>>
>> This is a good choice if you want want to change the value over time
>> (perhaps as your user interacts?).
>>
>> EnvFunction.setGlobalValue("simple", simpleFeatureFilter );
>> Filter filter = ff.equals( ff.function( "wrapper", ff.function( "env",
>> "simple" ) ), ff.literal( Boolean.TRUE ) );
>>
>> .. later ...
>>
>> EnvFunction.setGlobalValue("simple", simpleFeatureFilter2 );
>>
>> Do you have a JIRA issue open on this topic? It would be good to record
>> some ideas and actually solve this; and it would be nice if you can tell me
>> if the above ideas work (perhaps I can get a blog post or a tutorial out of
>> this discussion).
>>
>> --
>> Jody Garnett
>
>
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