nz.co.testamation.hibernate.HibernateEntityTemplate Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of testamation-jdk7-hibernate-support Show documentation
There is a newer version: 1.2
Show newest version
/*
 * Copyright 2016 Ratha Long
 *
 * 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.testamation.hibernate;

import com.google.common.base.Predicate;
import com.google.common.collect.Iterables;
import nz.co.testamation.common.util.ReflectionUtil;
import nz.co.testamation.core.waiting.Task;
import nz.co.testamation.core.waiting.WaitFor;
import org.apache.commons.lang3.reflect.FieldUtils;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.springframework.orm.hibernate4.HibernateCallback;
import org.springframework.orm.hibernate4.HibernateTemplate;

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Id;
import java.io.Serializable;
import java.lang.reflect.Field;

public class HibernateEntityTemplate {

    private final SessionFactory sessionFactory;

    private final EntityManagerFactory entityManagerFactory;

    public HibernateEntityTemplate( SessionFactory sessionFactory, EntityManagerFactory entityManagerFactory ) {
        this.sessionFactory = sessionFactory;
        this.entityManagerFactory = entityManagerFactory;
    }


    public interface Work {
        T execute( Session session );
    }

    public interface WorkNoResult {
        void execute( Session session );
    }

    public interface EntityWork {
        void execute( EntityManager entityManager );
    }

    public void doWithNewEntity( EntityWork work ) {
        EntityManager entityManager = entityManagerFactory.createEntityManager();
        work.execute( entityManager );
        entityManager.close();
    }

    public  T doInHibernate( final Work work ) {
        return new HibernateTemplate( sessionFactory ).execute(
            new HibernateCallback() {
                @Override
                public T doInHibernate( Session session ) throws HibernateException {
                    Transaction transaction = session.beginTransaction();
                    T result = work.execute( session );
                    session.flush();
                    transaction.commit();
                    return result;
                }
            } );
    }

    public void doInHibernateNoResult( final WorkNoResult work ) {
        new HibernateTemplate( sessionFactory ).execute(
            new HibernateCallback