FilterableJpaRepositoryFactoryBean.java

/**
 *   GRANITE DATA SERVICES
 *   Copyright (C) 2006-2015 GRANITE DATA SERVICES S.A.S.
 *
 *   This file is part of the Granite Data Services Platform.
 *
 *   Granite Data Services is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU Lesser General Public
 *   License as published by the Free Software Foundation; either
 *   version 2.1 of the License, or (at your option) any later version.
 *
 *   Granite Data Services is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
 *   General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public
 *   License along with this library; if not, write to the Free Software
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
 *   USA, or see <http://www.gnu.org/licenses/>.
 */
package org.granite.tide.spring.data;

import java.io.Serializable;

import javax.persistence.EntityManager;

import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.support.JpaRepositoryFactory;
import org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean;
import org.springframework.data.repository.core.RepositoryInformation;
import org.springframework.data.repository.core.RepositoryMetadata;
import org.springframework.data.repository.core.support.RepositoryFactorySupport;

public class FilterableJpaRepositoryFactoryBean<R extends JpaRepository<T, I>, T, I extends Serializable> extends JpaRepositoryFactoryBean<R, T, I> {

	@Override
	protected RepositoryFactorySupport createRepositoryFactory(EntityManager entityManager) {
		return new FilterableJpaRepositoryFactory<T, I>(entityManager);
	}
	
	private static class FilterableJpaRepositoryFactory<T, I extends Serializable> extends JpaRepositoryFactory {

		private EntityManager entityManager;

		public FilterableJpaRepositoryFactory(EntityManager entityManager) {
			super(entityManager);

			this.entityManager = entityManager;
		}
		
		@SuppressWarnings({ "unchecked" })
		protected Object getTargetRepository(RepositoryMetadata metadata) {
			return new FilterableJpaRepositoryImpl<T, I>((Class<T>)metadata.getDomainType(), entityManager);
		}
		
		@SuppressWarnings({ "unchecked", "unused" })
		protected Object getTargetRepository(RepositoryInformation info) {
			return new FilterableJpaRepositoryImpl<T, I>((Class<T>)info.getDomainType(), entityManager);
		}

		@Override
		protected Class<?> getRepositoryBaseClass(RepositoryMetadata metadata) {
			return FilterableJpaRepository.class;
		}
	}
}