Victor Mauricio Pazos wrote:
> Hi Jody, I am not sure about if I understand exactly your question. But if
> the
> following code:
>
> //create the filter
> filter =filterFactory.createCompareFilter(CompareFilter.COMPARE_GREATER_THAN);
> FeatureType featureType = features.getFeatures().getSchema();
> filter.addLeftValue(filterFactory.createAttributeExpression("POP_2000"));
> filter.addRightValue(filterFactory.createLiteralExpression(100000));
>
> //count filtered features
> col = features.getFeatures(filter);
>
> it is going to replace by a nicer code using CQL like:
>
> col = features.getFeatures("POP_2000 > 100000");
>
> I see the filters creation problems will be hidden, then the name of modules
> responsible of creation will be part of the internal behavior, and we only
> must take into account the new class name (currently named FilterBuilder)
> as "CQL" or "CQLParser" (maybe others) into the internal documentation
> (important to geotools developer). On the other hand Demo/intro and the user
> docs should talk about "CQL" as language (consistent with OGC).
>
> I lost something?
>
Well what we lost was your input on the DataAccess API - so your example
is not going to happen just now.
Let's try this one:
// Option 1: CQL is a utility class with static method using default
factory
col = features.getFeatures( CQL.filter( "POP_2000 > 100000" ) );
// Option 2: Use with your own FilterFactory
CQL cql = new CQL( filterFactory );
col = features.getFeatures( cql.parse( "POP_2000 > 10000" ) );
If you want we can write up a proposal for FeatureSource.features(
String query, String queryLanguage ) again ... I would like
it so we can support SQL as in Gabriels community schema branch .... ie.
source.features( sql, "SFSQL" );
Jody
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