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.apache.commons.lang3.BooleanUtils;

import org.gvsig.tools.dataTypes.AbstractCoercion;

import org.gvsig.tools.dataTypes.CoercionContext;

import org.gvsig.tools.dataTypes.CoercionException;

import org.gvsig.tools.dataTypes.DataTypesManager;

public class CoerceToByte extends AbstractCoercion {

    @Override

    @SuppressWarnings("UseSpecificCatch")

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

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

            return value;

        }

        Byte num;

        try {

            if (value instanceof Number) {

                num = ((Number) value).byteValue();

            } else if (value instanceof Boolean) {

                num = (byte) ((boolean) value ? 1 : 0);

            } else {

                String s = value.toString();

                if (s == null) {

                    return null;

                }

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

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

                    return null;

                }

                if (s.startsWith("0x")) {

                    num = Byte.valueOf(s.substring(2), 16);

                } else {

                    Boolean bool = BooleanUtils.toBooleanObject(s);

                    if (bool != null) {

                        num = ((boolean) bool ? (byte) 1 :(byte) 0);

                    } else {

                        num = Byte.valueOf(value.toString());

                    }

                }

            }

            return num;

        } catch (Exception e) {

            throw new CoercionException(e);

        }

    }

}