/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *    http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.magma.database.openjpa;

import org.apache.magma.database.Database;
import org.apache.magma.basics.startup.Cycle;

/**
 * Makes the JPADatabase the default database returned when new Database is called.
 * @author Simone Gianni
 */
public aspect InstallJPADatabase {

	JPADatabase Cycle.currentDb = null;
	
	public pointcut databaseCreation() : call(Database.new(..));
	
	public void Cycle.teardownJPADatabase() {
		if (this.currentDb == null) return;
		if (isInError() || !this.currentDb.hasBeenWritten) {
			currentDb.rollback();
		} else {
			currentDb.commit();
		}
		currentDb = null;
	}

	Database around() : databaseCreation() {
		Cycle cycle = Cycle.get();
		if (cycle.currentDb == null) {
			cycle.currentDb = new JPADatabase();
		}
		return cycle.currentDb;
	}
}