CLExternalClassRepositoryFactory.java

/*******************************************************************************
 * Copyright (c) 1998, 2015 Oracle and/or its affiliates. All rights reserved.
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
 * which accompanies this distribution.
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * Contributors:
 *     Oracle - initial API and implementation from Oracle TopLink
******************************************************************************/
package org.eclipse.persistence.tools.workbench.mappingsmodel.spi.meta.classloader;

import java.io.File;

import org.eclipse.persistence.tools.workbench.mappingsmodel.spi.meta.ExternalClassRepository;
import org.eclipse.persistence.tools.workbench.mappingsmodel.spi.meta.ExternalClassRepositoryFactory;


/**
 * Not much to say here: This is a factory for generating instances of
 * the "classloader" implementation of ExternalClassRepository, which uses a
 * URLClassLoader for generating ExternalClasses etc.
 */
public final class CLExternalClassRepositoryFactory
    implements ExternalClassRepositoryFactory
{

    /** the singleton */
    private static ExternalClassRepositoryFactory INSTANCE;        // pseudo-final


    /**
     * Singleton support.
     */
    public static synchronized ExternalClassRepositoryFactory instance() {
        if (INSTANCE == null) {
            INSTANCE = new CLExternalClassRepositoryFactory();
        }
        return INSTANCE;
    }

    /**
     * Private constructor - use the singleton.
     */
    private CLExternalClassRepositoryFactory() {
        super();
    }

    /**
     * @see org.eclipse.persistence.tools.workbench.mappingsmodel.spi.meta.ExternalClassRepositoryFactory#buildExternalClassRepository(java.io.File[])
     */
    public ExternalClassRepository buildClassRepository(File[] classpath) {
        return new URLCLExternalClassRepository(classpath);
    }

}