org.eclipse.smila.binarystorage.persistence.BinaryPersistenceFactory.java Source code

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Here is the source code for org.eclipse.smila.binarystorage.persistence.BinaryPersistenceFactory.java

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/***********************************************************************************************************************
 * Copyright (c) 2008 empolis GmbH and brox IT Solutions GmbH. All rights reserved. This program and the accompanying
 * materials are made available under the terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors: Marius Cimpean (brox IT Solutions GmbH) - initial creator
 **********************************************************************************************************************/
package org.eclipse.smila.binarystorage.persistence;

import java.lang.reflect.Constructor;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.eclipse.smila.binarystorage.BinaryStorageException;
import org.eclipse.smila.binarystorage.config.BinaryStorageConfiguration;

/**
 * Factory class providing with appropriate implementation of binary storage : file system or binary object persistence.
 * 
 * @author mcimpean
 */
public class BinaryPersistenceFactory {

    /**
     * Creates concrete BinaryPersistence implementation.
     * 
     * @param configuration
     * @return BinaryPersistence
     * @throws BinaryStorageException -
     *           in case BinaryPersistence implementation is not configured
     */
    @SuppressWarnings("unchecked")
    public static BinaryPersistence newImplInstance(BinaryStorageConfiguration configuration)
            throws BinaryStorageException {
        try {
            final Class clazz = Class.forName(configuration.getImplementationClass());
            final Constructor implConstructor = clazz
                    .getConstructor(new Class[] { BinaryStorageConfiguration.class });

            return (BinaryPersistence) implConstructor.newInstance(new Object[] { configuration });
        } catch (final Exception exception) {
            throw new IllegalArgumentException("Invalid BinaryPersistence configuration", exception);
        } finally {
            final Log log = LogFactory.getLog(BinaryPersistenceFactory.class);
            if (log.isInfoEnabled()) {
                log.info("Created new BinaryPersistence implementation instance :"
                        + configuration.getImplementationClass());
            }
        }
    }

    /**
     * Prevent instantiation outside of this class.
     */
    private BinaryPersistenceFactory() {
    }
}