DefaultStorageFactory.java

/*
############################################################################
##
## Copyright (C) 2006-2009 University of Utah. All rights reserved.
##
## This file is part of DeepPeep.
##
## This file may be used under the terms of the GNU General Public
## License version 2.0 as published by the Free Software Foundation
## and appearing in the file LICENSE.GPL included in the packaging of
## this file.  Please review the following to ensure GNU General Public
## Licensing requirements will be met:
## http://www.opensource.org/licenses/gpl-license.php
##
## If you are unsure which license is appropriate for your use (for
## instance, you are interested in developing a commercial derivative
## of DeepPeep), please contact us at deeppeep@sci.utah.edu.
##
## This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
## WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
##
############################################################################
*/
/*

 * StorageFactory.java

 *

 */
package focusedCrawler.util.storage;

import focusedCrawler.util.storage.AbstractStorageFactory;
import focusedCrawler.util.storage.Storage;
import focusedCrawler.util.storage.StorageFactory;
import focusedCrawler.util.storage.StorageFactoryException;


/**
 *
 * @author  Marcelo Fernandes
 * @version
 */
public class DefaultStorageFactory extends AbstractStorageFactory {

    private StorageFactory factory;

    private String factoryClassName;

    public DefaultStorageFactory() {

        super();

    } //StorageFactory


    public DefaultStorageFactory(StorageConfig config) {
        super(config);
    } //StorageFactory

    public StorageFactory getFactory() {
        return factory;
    } //main

    public void checkFactory() throws StorageFactoryException {

        if (factory == null) {

            if ((getConfig() == null) && (factoryClassName == null)) {

                throw new StorageFactoryException("config not set!");

            } //if

            if ((getConfig() != null) && (factoryClassName == null)) {

                factoryClassName = getConfig().getFactoryClassname();

            } //if

            try {

                factory = (StorageFactory) Class.forName(factoryClassName).newInstance();

                factory.setConfig(getConfig());

            } //try

            catch(ClassNotFoundException error) {

                throw new StorageFactoryException(error);

            } //catch

            catch(IllegalAccessException error) {

                throw new StorageFactoryException(error);

            } //catch

            catch(InstantiationException error) {

                throw new StorageFactoryException(error);

            } //catch

        } //if

    }

    public Storage produce() throws StorageFactoryException {
        checkFactory();
        return factory.produce();
    }

}