Application: gvSIG desktop

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program 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 General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 */

/*

 * AUTHORS (In addition to CIT):

 * 2009 {Iver T.I.}   {Task}

 */

package org.gvsig.fmap.dal.store.gpe;

import java.util.HashMap;

import java.util.Iterator;

import org.gvsig.fmap.dal.exception.DataException;

import org.gvsig.fmap.dal.exception.ReadRuntimeException;

import org.gvsig.fmap.dal.feature.Feature;

import org.gvsig.fmap.dal.feature.FeatureQuery;

import org.gvsig.fmap.dal.feature.FeatureType;

import org.gvsig.fmap.dal.feature.impl.DefaultFeature;

import org.gvsig.fmap.dal.feature.spi.FeatureData;

import org.gvsig.fmap.dal.feature.spi.FeatureSetProvider;

import org.gvsig.fmap.dal.store.gpe.handlers.FmapContentHandler;

import org.gvsig.gpe.GPEFactory;

/**

 * @author <a href="mailto:jpiera@gvsig.org">Jorge Piera</a>

 */

public class GPESetProvider implements FeatureSetProvider {

        private GPEStoreProvider store;

        private FeatureQuery query;

        private FeatureType featureType;

        public GPESetProvider(GPEStoreProvider store,

                        FeatureQuery query) {

                this.store = store;

                this.query = query;

        }

        public GPESetProvider(GPEStoreProvider store,

                        FeatureQuery query, FeatureType featureType) {

                this.store = store;

                this.query = query;

                this.featureType = featureType;

        }

        /* (non-Javadoc)

         * @see org.gvsig.fmap.dal.feature.spi.FeatureSetProvider#canFilter()

         */

        public boolean canFilter() {

                // TODO Auto-generated method stub

                return false;

        }

        /* (non-Javadoc)

         * @see org.gvsig.fmap.dal.feature.spi.FeatureSetProvider#canIterateFromIndex()

         */

        public boolean canIterateFromIndex() {

                // TODO Auto-generated method stub

                return false;

        }

        /* (non-Javadoc)

         * @see org.gvsig.fmap.dal.feature.spi.FeatureSetProvider#canOrder()

         */

        public boolean canOrder() {

                // TODO Auto-generated method stub

                return false;

        }

        /* (non-Javadoc)

         * @see org.gvsig.fmap.dal.feature.spi.FeatureSetProvider#fastIterator(long)

         */

        public Iterator fastIterator(long index) throws DataException {

                return new GPEFastIterator(this.store, this.featureType);

        }

        /* (non-Javadoc)

         * @see org.gvsig.fmap.dal.feature.spi.FeatureSetProvider#fastIterator()

         */

        public Iterator fastIterator() throws DataException {

                return fastIterator(0);

        }

        /* (non-Javadoc)

         * @see org.gvsig.fmap.dal.feature.spi.FeatureSetProvider#getSize()

         */

        public long getSize() throws DataException {

                return store.getFeatureCount();

        }

        /* (non-Javadoc)

         * @see org.gvsig.fmap.dal.feature.spi.FeatureSetProvider#isEmpty()

         */

        public boolean isEmpty() throws DataException {

                // TODO Auto-generated method stub

                return false;

        }

        /* (non-Javadoc)

         * @see org.gvsig.fmap.dal.feature.spi.FeatureSetProvider#iterator()

         */

        public Iterator iterator() throws DataException {

                return this.iterator(0);

        }

        /* (non-Javadoc)

         * @see org.gvsig.fmap.dal.feature.spi.FeatureSetProvider#iterator(long)

         */

        public Iterator iterator(long index) throws DataException {

                return new GPEIterator(this.store, this.featureType);

        }

        protected class GPEIterator implements Iterator {

                protected GPEStoreProvider store;

                protected FeatureType type;

                Iterator keys = null;

                HashMap<String, Feature> features = null;

                public GPEIterator(GPEStoreProvider store, FeatureType type) throws DataException {

                        this.store = store;

                        this.type = type;

                        features = ((FmapContentHandler)store.getParser().getContentHandler())

                                        .getFeatureSet();

                        keys = features.keySet().iterator();

                }

                /*

                 * (non-Javadoc)

                 * @see java.util.Iterator#hasNext()

                 */

                public boolean hasNext() {

                        return keys.hasNext();

                }

                /*

                 * (non-Javadoc)

                 * @see java.util.Iterator#next()

                 */

                public Object next() {

                        return ((DefaultFeature)features.get(keys.next())).getData();

                }

                /*

                 * (non-Javadoc)

                 * @see java.util.Iterator#remove()

                 */

                public void remove() {

                        throw new UnsupportedOperationException();

                }

        }

        protected class GPEFastIterator extends GPEIterator {

                public GPEFastIterator(GPEStoreProvider store, FeatureType type) throws DataException {

                        super(store, type);

                }

        }

}