ApplicationContextWrapper.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.framework.context;

import java.util.prefs.Preferences;

import org.eclipse.persistence.tools.workbench.framework.Application;
import org.eclipse.persistence.tools.workbench.framework.NodeManager;
import org.eclipse.persistence.tools.workbench.framework.help.HelpManager;
import org.eclipse.persistence.tools.workbench.framework.resources.ResourceRepository;


/**
 * This class wraps another context and delegates most of
 * the behavior to it. (The #build__() methods are NOT delegated -
 * they must return a wrapped version of THIS object, NOT the delegate.)
 * Subclasses can simply override the method(s) that should not be delegated.
 */
public class ApplicationContextWrapper extends AbstractApplicationContext {

    private ApplicationContext delegate;


    // ********** constructor/initialization **********

    /**
     * Construct an wrapper for the specified context.
     */
    public ApplicationContextWrapper(ApplicationContext delegate) {
        super();
        if (delegate == null) {
            throw new NullPointerException();
        }
        this.delegate = delegate;
    }


    // ********** ApplicationContext implementation **********

    /**
     * @see ApplicationContext#getApplication()
     */
    public Application getApplication() {
        return this.delegate.getApplication();
    }

    /**
     * @see ApplicationContext#getPreferences()
     */
    public Preferences getPreferences() {
        return this.delegate.getPreferences();
    }

    /**
     * @see ApplicationContext#getResourceRepository()
     */
    public ResourceRepository getResourceRepository() {
        return this.delegate.getResourceRepository();
    }

    /**
     * @see ApplicationContext#getNodeManager()
     */
    public NodeManager getNodeManager() {
        return this.delegate.getNodeManager();
    }

    /**
     * @see ApplicationContext#getHelpManager()
     */
    public HelpManager getHelpManager() {
        return this.delegate.getHelpManager();
    }


    // ********** additional behavior **********

    /**
     * Allow access to the delegate.
     */
    public ApplicationContext getDelegate() {
        return this.delegate;
    }

}