Spring Framework example source code file (EntityManagerHolder.java)

This example Spring Framework source code file (EntityManagerHolder.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Spring Framework tags/keywords

entitymanager, entitymanager, entitymanagerholder, entitymanagerholder, resourceholdersupport, resourceholdersupport, savepointmanager, savepointmanager

The Spring Framework EntityManagerHolder.java source code

/*
 * Copyright 2002-2007 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 org.springframework.orm.jpa;

import javax.persistence.EntityManager;

import org.springframework.transaction.SavepointManager;
import org.springframework.transaction.support.ResourceHolderSupport;
import org.springframework.util.Assert;

/**
 * Holder wrapping a JPA EntityManager.
 * JpaTransactionManager binds instances of this class to the thread,
 * for a given EntityManagerFactory.
 *
 * <p>Note: This is an SPI class, not intended to be used by applications.
 *
 * @author Juergen Hoeller
 * @since 2.0
 * @see JpaTransactionManager
 * @see EntityManagerFactoryUtils
 */
public class EntityManagerHolder extends ResourceHolderSupport {

	private final EntityManager entityManager;

	private boolean transactionActive;

	private SavepointManager savepointManager;


	public EntityManagerHolder(EntityManager entityManager) {
		Assert.notNull(entityManager, "EntityManager must not be null");
		this.entityManager = entityManager;
	}


	public EntityManager getEntityManager() {
		return this.entityManager;
	}

	protected void setTransactionActive(boolean transactionActive) {
		this.transactionActive = transactionActive;
	}

	protected boolean isTransactionActive() {
		return this.transactionActive;
	}

	protected void setSavepointManager(SavepointManager savepointManager) {
		this.savepointManager = savepointManager;
	}

	protected SavepointManager getSavepointManager() {
		return this.savepointManager;
	}

	public void clear() {
		super.clear();
		this.transactionActive = false;
		this.savepointManager = null;
	}

}