jpa/plugins/org.eclipse.jpt.jpa.db/src/org/eclipse/jpt/jpa/db/internal/vendor/NoCatalogStrategy.java

/*******************************************************************************
 * Copyright (c) 2009 Oracle. 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:
 *     Oracle - initial API and implementation
 ******************************************************************************/
package org.eclipse.jpt.jpa.db.internal.vendor;

import java.util.Collections;
import java.util.List;

import org.eclipse.datatools.modelbase.sql.schema.Catalog;
import org.eclipse.datatools.modelbase.sql.schema.Database;
import org.eclipse.datatools.modelbase.sql.schema.Schema;

/**
 * Catalog strategy for DTP databases that do not have catalogs
 * (e.g. MySQL see bug 249013).
 */
class NoCatalogStrategy
	implements CatalogStrategy
{
	// singleton
	private static final CatalogStrategy INSTANCE = new NoCatalogStrategy();

	/**
	 * Return the singleton.
	 */
	static CatalogStrategy instance() {
		return INSTANCE;
	}

	/**
	 * Ensure single instance.
	 */
	private NoCatalogStrategy() {
		super();
	}

	public boolean supportsCatalogs(Database database) {
		return false;
	}

	public List<Catalog> getCatalogs(Database database) {
		return Collections.emptyList();
	}

	@SuppressWarnings("unchecked")
	public List<Schema> getSchemas(Database database) {
		return database.getSchemas();
	}

}