Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 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 3

 * 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.fmap.dal.store.dbf;

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

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

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

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

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

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.primitive.Envelope;

public class DBFFeatureProvider extends DefaultFeatureProvider {

        protected DBFStoreProvider store;

        protected boolean loading;

        protected boolean loaded;

        public DBFFeatureProvider(DBFStoreProvider store, FeatureType type) {

                super(type);

                this.store = store;

                loading = false;

                loaded = false;

        }

        protected void load() {

                if (loading || loaded || this.isNew()) {

                        return;

                }

                loading = true;

                try {

                        this.store.loadFeatureProviderByIndex(this);

                } catch (DataException e) {

                        throw new ReadRuntimeException(getNameForMessages(), this.getOID(), e);

                } finally {

                        loading = false;

                        loaded = true;

                }

        }

        protected String getNameForMessages() {

            // Solo con proposito de mostrar en mensajes de error.

            try {

                return this.store.getName();

            } catch(Exception ex) {

                return "unknown";

            }

        }

        public void set(int i, Object value) {

                this.load();

                super.set(i, value);

        }

        public void set(String name, Object value) {

                this.load();

                super.set(featureType.getIndex(name), value);

        }

        public Object get(int i) {

                this.load();

                return super.get(i);

        }

        public Object get(String name) {

                this.load();

                return super.get(name);

        }

        public Geometry getDefaultGeometry() {

                return null;

        }

        public Envelope getDefaultEnvelope() {

                return null;

        }

        public void setOID(Object oid) {

                this.loaded = false;

                super.setOID(oid);

        }

        public FeatureProvider getCopy() {

                this.load();

                return super.getCopy();

        }

}