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This provides database support (JPA + migrations) for ninja. This package exists for compatibility reasons and likely you want to use ninja-db as replacement.

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/**
 * Copyright (C) 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.jpa;

import ninja.lifecycle.Dispose;
import ninja.lifecycle.Start;

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

/**
 * Initializes the guice-persist JPA support.
 * 
 * Please note that we are using @Start annotation of Ninja
 * to start up the service.
 * 
 * @author ra
 *
 */
@Singleton
public class JpaInitializer {
    
    private PersistService persistService;


    @Inject
    JpaInitializer(PersistService persistService) {
        
        this.persistService = persistService;     

    }
    
    
    @Start(order = 10)
    public void start() {
        
        persistService.start();        
        // At this point JPA is started and ready.
        
    }
    
    @Dispose(order = 10)
    public void stop() {
        // We are nice and stop the persist service at the end...
        persistService.stop();        

    }

}