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/*
 *    GeoTools - The Open Source Java GIS Toolkit
 *    http://geotools.org
 *
 *    (C) 2003-2008, Open Source Geospatial Foundation (OSGeo)
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License as published by the Free Software Foundation;
 *    version 2.1 of the License.
 *
 *    This library is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *    Lesser General Public License for more details.
 */
package org.geotools.data;

import java.io.IOException;
import java.util.Collection;
import java.util.NoSuchElementException;
import org.geotools.data.simple.SimpleFeatureCollection;
import org.geotools.data.simple.SimpleFeatureIterator;
import org.geotools.feature.FeatureCollection;
import org.geotools.feature.FeatureIterator;
import org.geotools.geometry.jts.ReferencedEnvelope;
import org.opengis.feature.FeatureVisitor;
import org.opengis.feature.simple.SimpleFeature;
import org.opengis.feature.simple.SimpleFeatureType;
import org.opengis.filter.Filter;
import org.opengis.filter.sort.SortBy;
import org.opengis.util.ProgressListener;

/**
 * This class is a bridge between a FeatureCollection and the
 * SimpleFeatureCollection interface.
 *
 * 

This class is package visbile and can only be created by DataUtilities.simple( * featureCollection ); it is under lock and key so that we can safely do an instance of check and * not get multiple wrappers piling up. * * @author Jody * @since 2.7 */ class SimpleFeatureCollectionBridge implements SimpleFeatureCollection { private FeatureCollection collection; public SimpleFeatureCollectionBridge( FeatureCollection featureCollection) { if (featureCollection == null) { throw new NullPointerException("FeatureCollection required"); } if (featureCollection instanceof SimpleFeatureCollection) { throw new IllegalArgumentException("Already a SimpleFeatureCollection"); } this.collection = featureCollection; } @SuppressWarnings("PMD.CloseResource") // closed in the wrapper public SimpleFeatureIterator features() { final FeatureIterator features = collection.features(); return new SimpleFeatureIterator() { public SimpleFeature next() throws NoSuchElementException { return features.next(); } public boolean hasNext() { return features.hasNext(); } public void close() { features.close(); } }; } public SimpleFeatureCollection sort(SortBy order) { return new SimpleFeatureCollectionBridge(collection.sort(order)); } public SimpleFeatureCollection subCollection(Filter filter) { return new SimpleFeatureCollectionBridge(collection.subCollection(filter)); } public void accepts(FeatureVisitor visitor, ProgressListener progress) throws IOException { collection.accepts(visitor, progress); } public boolean contains(Object o) { return collection.contains(o); } public boolean containsAll(Collection o) { return collection.containsAll(o); } public ReferencedEnvelope getBounds() { return collection.getBounds(); } public String getID() { return collection.getID(); } public SimpleFeatureType getSchema() { return collection.getSchema(); } public boolean isEmpty() { return collection.isEmpty(); } public int size() { return collection.size(); } public Object[] toArray() { return collection.toArray(); } public O[] toArray(O[] a) { return collection.toArray(a); } }





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