/*
* Copyright 2004-2015 the Seasar Foundation and the Others.
*
* 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 org.seasar.framework.jpa.impl;
import javax.persistence.EntityManager;
import javax.persistence.EntityTransaction;
import javax.persistence.FlushModeType;
import javax.persistence.LockModeType;
import javax.persistence.Query;
import org.seasar.framework.container.annotation.tiger.Binding;
import org.seasar.framework.container.annotation.tiger.BindingType;
import org.seasar.framework.container.annotation.tiger.Component;
import org.seasar.framework.exception.EmptyRuntimeException;
import org.seasar.framework.jpa.EntityManagerProvider;
import org.seasar.framework.util.StringUtil;
/**
* 複数の{@link EntityManager}から任意の{@link EntityManager}を選択し処理を委譲するプロキシです。
* <p>
* 委譲先の{@link EntityManager}は{@link EntityManagerProvider}から取得します。
* </p>
*
* @author koichik
*/
@Component
public class SelectableEntityManagerProxy implements EntityManager {
/** {@link EntityManagerProvider}のインスタンス */
@Binding(bindingType = BindingType.MUST)
protected EntityManagerProvider entityManagerProvider;
/**
* インスタンスを構築します。
*/
public SelectableEntityManagerProxy() {
}
/**
* {@link EntityManager}のコンポーネントを返します。
*
* @return {@link EntityManager}のコンポーネント
*/
protected EntityManager getEntityManager() {
final String prefix = entityManagerProvider
.getSelectableEntityManagerPrefix();
if (StringUtil.isEmpty(prefix)) {
throw new EmptyRuntimeException("entityManagerName");
}
return entityManagerProvider.getEntityManger(prefix);
}
public void clear() {
final EntityManager em = getEntityManager();
em.clear();
}
public void close() {
final EntityManager em = getEntityManager();
em.close();
}
public boolean contains(final Object entity) {
final EntityManager em = getEntityManager();
return em.contains(entity);
}
public Query createNamedQuery(final String name) {
final EntityManager em = getEntityManager();
return em.createNamedQuery(name);
}
public Query createNativeQuery(final String sqlString) {
final EntityManager em = getEntityManager();
return em.createNativeQuery(sqlString);
}
@SuppressWarnings("unchecked")
public Query createNativeQuery(final String sqlString,
final Class resultClass) {
final EntityManager em = getEntityManager();
return em.createNativeQuery(sqlString, resultClass);
}
public Query createNativeQuery(final String sqlString,
final String resultSetMapping) {
final EntityManager em = getEntityManager();
return em.createNativeQuery(sqlString, resultSetMapping);
}
public Query createQuery(final String qlString) {
final EntityManager em = getEntityManager();
return em.createQuery(qlString);
}
public <T> T find(final Class<T> entityClass, final Object primaryKey) {
final EntityManager em = getEntityManager();
return em.find(entityClass, primaryKey);
}
public void flush() {
final EntityManager em = getEntityManager();
em.flush();
}
public Object getDelegate() {
final EntityManager em = getEntityManager();
return em.getDelegate();
}
public FlushModeType getFlushMode() {
final EntityManager em = getEntityManager();
return em.getFlushMode();
}
public <T> T getReference(final Class<T> entityClass,
final Object primaryKey) {
final EntityManager em = getEntityManager();
return em.getReference(entityClass, primaryKey);
}
public EntityTransaction getTransaction() {
final EntityManager em = getEntityManager();
return em.getTransaction();
}
public boolean isOpen() {
final EntityManager em = getEntityManager();
return em.isOpen();
}
public void joinTransaction() {
final EntityManager em = getEntityManager();
em.joinTransaction();
}
public void lock(final Object entity, final LockModeType lockMode) {
final EntityManager em = getEntityManager();
em.lock(entity, lockMode);
}
public <T> T merge(final T entity) {
final EntityManager em = getEntityManager();
return em.merge(entity);
}
public void persist(final Object entity) {
final EntityManager em = getEntityManager();
em.persist(entity);
}
public void refresh(final Object entity) {
final EntityManager em = getEntityManager();
em.refresh(entity);
}
public void remove(final Object entity) {
final EntityManager em = getEntityManager();
em.remove(entity);
}
public void setFlushMode(final FlushModeType flushMode) {
final EntityManager em = getEntityManager();
em.setFlushMode(flushMode);
}
}