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/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright ? 2007-2016 gvSIG Association

 *

 * 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.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.lidar.prov;

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.fmap.dal.feature.spi.AbstractFeatureStoreProvider;

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

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

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.exception.BaseException;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

 * 

 * @author <a href="mailto:cmartinez@scolab.es">Cesar Martinez Izquierdo</a>

 *

 */

public class LASFetureSetProvider extends AbstractFeatureSetProvider implements FeatureSetProvider {

    private static final Logger LOG = LoggerFactory.getLogger(LASFetureSetProvider.class);

    private static final String regularExpresion =

        "\\s*ST_intersects[(]\\s*ST_GeomFromText[(]\\s*'([^']*)'\\s*,\\s*'([^']*)'\\s*[)],\\s*(?s).*";

    /**

     * @param store

     *            Source of this feature set

     * @param query

     *            Query

     * @param featureType

     *            Featuretype requested

     */

    public LASFetureSetProvider(AbstractFeatureStoreProvider store, FeatureQuery query,

        FeatureType featureType) {

        super(store, query, featureType);

    }

    @Override

    public boolean canFilter() {

        return false;

    }

    @Override

    public boolean canOrder() {

        return false;

    }

    @Override

    public boolean canIterateFromIndex() {

        return true;

    }

    @Override

    public long getSize() throws DataException {

        return getStore().getFeatureCount(); // FIXME

    }

    @Override

    public boolean isEmpty() throws DataException {

        return getSize() == 0;

    }

    @Override

    protected AbstractFeatureProviderIterator createIterator(long index) throws DataException {

        return createFastIterator(index);

    }

    @Override

    protected AbstractFeatureProviderIterator createFastIterator(long index) throws DataException {

        return new LASFastIterator(getStore(), index);

    }

    @Override

    protected void doDispose() throws BaseException {

    }

    class LASFastIterator extends AbstractFeatureProviderIterator {

        private long index;

        public LASFastIterator(FeatureStoreProvider storeProvider, long index)

            throws LASUnsupportedFormatException {

            super(storeProvider);

            ToolsLocator.getDisposableManager().bind(storeProvider);

            this.index = index;

        }

        @Override

        public void remove() {

                throw new UnsupportedOperationException();

        }

        @Override

        protected Object internalNext() {

                try {

                                return ((LASDataStoreProvider)this.getDataStoreProvider()).internalGetFeatureProviderByIndex(index++, getFeatureType());

                        } catch (DataException e) {

                                // TODO Auto-generated catch block

                                e.printStackTrace();

                        }

                return null;

        }

        @Override

        protected boolean internalHasNext() {

            try {

                                return index < ((LASDataStoreProvider)this.getDataStoreProvider()).getFeatureCount() ? true : false;

                        } catch (DataException e) {

                                e.printStackTrace();

                        }

            return false;

        }

        @Override

        protected void doDispose() throws BaseException {

            ToolsLocator.getDisposableManager().release(getStore());

        }

    }

}