Application: gvSIG desktop

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 *

 * 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.

 *

 */

/*

 * AUTHORS (In addition to CIT):

 * 2009 IVER T.I   {{Task}}

 */

/**

 *

 */

package org.gvsig.fmap.dal.resource.spi;

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

import org.gvsig.fmap.dal.resource.ResourceAction;

import org.gvsig.fmap.dal.resource.ResourceParameters;

import org.gvsig.fmap.dal.resource.exception.ResourceExecuteException;

/**

 * <p>

 * Abstract Implementation for Resource that allows the concurrent access.

 * </p>

 * 

 * @author jmvivo

 * 

 */

public abstract class AbstractNonBlockingResource extends AbstractResource {

        /**

         * @param parameters

         * @throws InitializeException

         */

        public AbstractNonBlockingResource(ResourceParameters parameters)

                        throws InitializeException {

                super(parameters);

        }

        public Object execute(ResourceAction action)

                        throws ResourceExecuteException {

                Object value = null;

                synchronized (lock) {

                        executeBegins();

                }

                try {

                        value = performExecution(action);

                } catch (Exception e) {

                        throw new ResourceExecuteException(this, e);

                } finally {

                        synchronized (lock) {

                                executeEnds();

                        }

                }

                return value;

        }

}