nz.co.senanque.sandbox.CustomerJPAImpl.java Source code

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Here is the source code for nz.co.senanque.sandbox.CustomerJPAImpl.java

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/*******************************************************************************
 * Copyright (c)2014 Prometheus Consulting
 *
 * 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 nz.co.senanque.sandbox;

import javax.persistence.EntityManager;
import javax.persistence.LockModeType;
import javax.persistence.PersistenceContext;

import nz.co.senanque.madura.sandbox.Customer;
import nz.co.senanque.madura.sandbox.ObjectFactory;

import org.springframework.transaction.annotation.Transactional;

/**
 * 
 * Customer DAO which uses JPA
 * 
 * @author Roger Parkinson
 * @version $Revision: 1.4 $
 */
public class CustomerJPAImpl implements CustomerDAO {
    @PersistenceContext
    private EntityManager m_entityManager;
    private transient ObjectFactory m_objectFactory;

    public Customer createCustomer() {
        return getObjectFactory().createCustomer();

    }

    @Transactional
    public long save(final Customer customer) {
        m_entityManager.merge(customer);
        m_entityManager.flush();
        return customer.getId();
    }

    public ObjectFactory getObjectFactory() {
        return m_objectFactory;
    }

    public void setObjectFactory(final ObjectFactory objectFactory) {
        m_objectFactory = objectFactory;
    }

    @Transactional(readOnly = true)
    public Customer getCustomer(long id) {
        Customer ret = null;
        try {
            ret = m_entityManager.find(Customer.class, id, LockModeType.PESSIMISTIC_WRITE);
            if (ret == null) {
                throw new RuntimeException("Could not find customer " + id);
            }
            ret.getInvoices().size();
        } catch (Exception e) {
            throw e;
        }
        return ret;
    }
}