How to use

org.geotools.data.store.FilteringFeatureCollection

constructor

/**
 * Convenience implementation that just wraps this collection into a {@link
 * FilteringFeatureCollection}. Subclasses might want to override this in case the filter can be
 * cascaded to their data sources.
 *
 * @param filter
 * @return
 */
public FeatureCollection<T, F> subCollection(Filter filter) {
  if (filter == Filter.INCLUDE) {
    return this;
  }
  return new FilteringFeatureCollection<T, F>(this, filter);
}
/**

    new FilteringFeatureCollection<T, F>(collection, writeQuery.getFilter());
if (filtered.size() < collection.size()) {
  String typeName = getSchema().getName().getLocalPart();

/**
 * Creates a new instance of FilteringIteration
 *
 * @param filter DOCUMENT ME!
 * @param collection DOCUMENT ME!
 */
public FilteringIteration(
    org.opengis.filter.Filter filter, FeatureCollection<?, ?> collection) {
  super(new FilterHandler(filter), new FilteringFeatureCollection(collection, filter));
}

/**
 * Convenience implementation that just wraps this collection into a
 * {@link FilteringFeatureCollection}. Subclasses might want to override this in case the filter
 * can be cascaded to their data sources.
 * 
 * @param filter
 * @return
 */
@Override
public FeatureCollection<T, F> subCollection(Filter filter) {
  return new FilteringFeatureCollection<T, F>(this, filter);
}

@Override
public FeatureCollection<FeatureType, Feature> subCollection(Filter filter) {
  return new FilteringFeatureCollection<FeatureType, Feature>(this, filter);
}

@Override
public FeatureCollection<FeatureType, Feature> subCollection(Filter filter) {
  return new FilteringFeatureCollection<FeatureType, Feature>(this, filter);
}

@Override
public FeatureCollection<FeatureType, Feature> subCollection(Filter filter) {
  return new FilteringFeatureCollection<FeatureType, Feature>(this, filter);
}

@Override
public FeatureCollection<FeatureType, Feature> subCollection(Filter filter) {
  return new FilteringFeatureCollection<FeatureType, Feature>(this, filter);
}

public FeatureCollection getFeatures(Filter filter) throws IOException {
  //filter
  if ( filter != null && !filter.equals( Filter.INCLUDE ) ) {
    return new FilteringFeatureCollection( getFeatures() , filter );
  }
  
  return getFeatures();
}

Filter expanded = (Filter) filter.accept(expander, null);
records = new FilteringFeatureCollection<FeatureType, Feature>(records, expanded);

Filter expanded = (Filter) filter.accept(expander, null);
records = new FilteringFeatureCollection<FeatureType, Feature>(records, expanded);

match = new FilteringFeatureCollection(match, postFilter);