ninja.migrations.MigrationInitializer Maven / Gradle / Ivy

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/**
 * Copyright (C) 2012-2014 the original author or authors.
 *
 * Licensed 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 ninja.migrations;

import ninja.lifecycle.Start;

import com.google.inject.Inject;
import com.google.inject.Singleton;

/**
 * This class must be bound in a Guice module so that
 * @Start annotation works
 * 
 * It starts migrations by the registered migration engine.
 * 
 * @author ra
 *
 */
@Singleton
public class MigrationInitializer {

    private MigrationEngine migrationEngine;

    @Inject
    public MigrationInitializer(MigrationEngine migrationEngine) {
        this.migrationEngine = migrationEngine;
      

    }
    
    /**
     * We start it at order 9 which is below order 10 (where JPA is started)
     */
    @Start(order=9)
    public void start() {
        
        migrationEngine.migrate();
        
    }

}