ExternalClassDescriptionClassDesciptionAdapter.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.mappingsplugin.ui.meta;

import org.eclipse.persistence.tools.workbench.framework.ui.chooser.ClassDescriptionAdapter;
import org.eclipse.persistence.tools.workbench.framework.ui.chooser.DefaultClassDescriptionAdapter;
import org.eclipse.persistence.tools.workbench.mappingsmodel.spi.meta.ExternalClassDescription;


/**
 * The "external" class adapter assumes that the user-supplied "class descriptions"
 * are a collection of "external" class descriptions, supplied by an "external" class repository.
 * The UI can use this in conjunction with ExternalClassDescriptionClassDescriptionRepository.
 */
public class ExternalClassDescriptionClassDesciptionAdapter
    extends DefaultClassDescriptionAdapter
{
    /**
     * provide a Singleton
     */
    private static ClassDescriptionAdapter INSTANCE;

    public static synchronized ClassDescriptionAdapter instance() {
        if (INSTANCE == null) {
            INSTANCE = new ExternalClassDescriptionClassDesciptionAdapter();
        }
        return INSTANCE;
    }

    /**
     * The "class description" is an ExternalClassDescription.
     */
    public String className(Object classDescription) {
        return ((ExternalClassDescription) classDescription).getName();
    }

    /**
     * The "class description" is an ExternalClassDescription.
     */
    public String additionalInfo(Object classDescription) {
        return ((ExternalClassDescription) classDescription).getAdditionalInfo();
    }

}