| gvSIG desktop 1

/* 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.feature.FeatureQuery;

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

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

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

import org.gvsig.tools.exception.BaseException;

/**

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

 */

public class GPESetProvider extends AbstractFeatureSetProvider {

        public GPESetProvider(GPEStoreProvider store,

                        FeatureQuery query) {

                super(store, query, null);

        }

        public GPESetProvider(GPEStoreProvider store,

                        FeatureQuery query, FeatureType featureType) {

                super(store, query, 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#getSize()

         */

        public long getSize() throws DataException {

                return getStore().getFeatureCount();

        }

        /* (non-Javadoc)

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

         */

        public boolean isEmpty() throws DataException {

                // TODO Auto-generated method stub

                return false;

        }

        protected AbstractFeatureProviderIterator createFastIterator(long index)

                        throws DataException {

                return new GPEFastIterator((GPEStoreProvider) getStore(),

                                getFeatureType());

        }

        protected AbstractFeatureProviderIterator createIterator(long index)

                        throws DataException {

                return new GPEIterator((GPEStoreProvider) getStore(), getFeatureType());

        }

        protected class GPEIterator extends AbstractFeatureProviderIterator {

                protected FeatureType type;

                Iterator keys = null;

                HashMap features = null;

                public GPEIterator(GPEStoreProvider store, FeatureType type)

                                throws DataException {

                        super(store);

                        this.type = type;

                        features = store.getContentHandler().getFeatureSet();

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

                }

                protected boolean internalHasNext() {

                        return keys.hasNext();

                }

                protected Object internalNext() {

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

                }

                /*

                 * (non-Javadoc)

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

                 */

                public void remove() {

                        throw new UnsupportedOperationException();

                }

                protected void doDispose() throws BaseException {

                }

        }

        protected class GPEFastIterator extends GPEIterator {

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

                        super(store, type);

                }

        }

        protected void doDispose() throws BaseException {

                // Nothing to do

        }

}