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.geom.jts.coerce;

import org.apache.commons.lang3.StringUtils;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.GeometryLocator;

import org.gvsig.fmap.geom.GeometryManager;

import org.gvsig.tools.dataTypes.AbstractCoercion;

import org.gvsig.tools.dataTypes.CoercionException;

import org.gvsig.tools.dataTypes.CoercionContext;

/**

 * Convert a object to Geometry.

 *

 * Support convert: - Geometry to Geometry (do nothing) - WKB (byte[]) to

 * Geometry - WKT (String/toString) to Geometry

 *

 *

 * @author gvSIG Team

 * @version $Id$

 *

 */

@SuppressWarnings("UseSpecificCatch")

public class CoerceToGeometry extends AbstractCoercion {

  @Override

  public Object coerce(Object value, CoercionContext context) throws CoercionException {

    if (value == null || value instanceof Geometry) {

      return value;

    }

    try {

      Geometry geom;

      GeometryManager manager = GeometryLocator.getGeometryManager();

      if (value instanceof byte[]) {

        geom = manager.createFrom((byte[]) value);

      } else {

        String wkt = value.toString();

        if( StringUtils.isBlank(wkt) ) {

            return null;

        }

        geom = manager.createFrom(value.toString());

      }

      if (geom == null) {

        throw new CoercionException();

      }

      return geom;

    } catch (Exception e) {

      throw new CoercionException(e);

    }

  }

}