Application: gvSIG desktop » Library: org.gvsig.tools

/**

 * 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 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.tools.dataTypes.impl.coercion;

import org.gvsig.tools.dataTypes.AbstractCoercion;

import org.gvsig.tools.dataTypes.CoercionException;

import org.gvsig.tools.dataTypes.CoercionContext;

public class CoerceToBoolean extends AbstractCoercion {

  @Override

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

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

      return value;

    }

    try {

      if (value instanceof Number) {

        if (((Number) value).intValue() == 1) {

          value = Boolean.TRUE;

        } else {

          value = Boolean.FALSE;

        }

      } else {

        String s = value.toString();

        if (s == null) {

          return null;

        }

        s = s.trim().toLowerCase();

        if (s.length() == 0) {

          return null;

        }

        value = Boolean.valueOf(s);

      }

      return value;

    } catch (Exception e) {

      throw new CoercionException(e);

    }

  }

}