public FeatureCollection<SimpleFeatureType, SimpleFeature> getVersionedFeatures(Query query)
throws IOException {
final SimpleFeatureType ft = getSchema();
// check the feature type is the right one
final String typeName = ft.getTypeName();
if (query.getTypeName() != null && !query.getTypeName().equals(typeName))
throw new IOException("Incompatible type, this class can access only " + typeName);
// make sure the view is around
if (!Arrays.asList(store.wrapped.getTypeNames()).contains(store.getVFCViewName(typeName)))
store.createVersionedFeatureCollectionView(typeName);
// we have to hit the view
DefaultQuery vq = new DefaultQuery(query);
vq.setTypeName(VersionedPostgisDataStore.getVFCViewName(typeName));
vq = store.buildVersionedQuery(vq);
FeatureCollection<SimpleFeatureType, SimpleFeature> fc =
store
.wrapped
.getFeatureSource(VersionedPostgisDataStore.getVFCViewName(typeName))
.getFeatures(vq);
final SimpleFeatureType fcSchema = fc.getSchema();
// build a renamed feature type with the same attributes as the feature collection
SimpleFeatureTypeBuilder builder = new SimpleFeatureTypeBuilder();
builder.init(ft);
builder.setAttributes(fc.getSchema().getAttributeDescriptors());
SimpleFeatureType renamedFt = builder.buildFeatureType();
return new ReTypingFeatureCollection(fc, renamedFt);
}
/**
* Clones the query and sets the proper type name into it
*
* @param query
* @return
*/
private Query getTypedQuery(Query query) {
DefaultQuery q = new DefaultQuery(query);
q.setTypeName(schema.getTypeName());
return q;
}