Class CollectionFeatureSource.SubCollection

    • Method Detail

      • subCollection

        public SimpleFeatureCollection subCollection​(Filter filter)
        Description copied from interface: FeatureCollection
        SimpleFeatureCollection "view" indicated by provided filter.

        The contents of the returned SimpleFeatureCollection are determined by applying the provider Filter to the entire contents of this FeatureCollection. The result is "live" and modifications will be shared.

        This method is used cut down on the number of filter based methods required for a useful SimpleFeatureCollection construct. The FeatureCollections returned really should be considered as a temporary "view" used to control the range of a removeAll, or modify operation.

        Example Use:

        
         collection.subCollection( filter ).clear();
         
        The above recommended use is agreement with the Collections API precident of List.subList( start, end ).

        The results of subCollection:

        • are to be considered unordered
        • may be an ordered FeatureList if requested when sortBy is indicated
        Specified by:
        subCollection in interface FeatureCollection<SimpleFeatureType,​SimpleFeature>
        Specified by:
        subCollection in interface SimpleFeatureCollection
        Overrides:
        subCollection in class DecoratingSimpleFeatureCollection
        Returns:
        SimpleFeatureCollection identified as subset.
        See Also:
        FeatureList