TargetEntity.java

/**
 * Copyright 2009-2013 Oy Vaadin Ltd
 *
 * 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 com.vaadin.addon.jpacontainer.itest.targetentity;

import javax.persistence.EntityManager;

import com.vaadin.addon.jpacontainer.JPAContainer;
import com.vaadin.addon.jpacontainer.JPAContainerFactory;
import com.vaadin.addon.jpacontainer.itest.targetentity.domain.AbstractEconomicObject;
import com.vaadin.addon.jpacontainer.itest.targetentity.domain.Data;
import com.vaadin.addon.jpacontainer.itest.targetentity.domain.EconomicObject;
import com.vaadin.addon.jpacontainer.util.HibernateLazyLoadingDelegate;
import com.vaadin.server.VaadinRequest;
import com.vaadin.v7.ui.Table;
import com.vaadin.ui.UI;

public class TargetEntity extends UI {

    static {
        EntityManager em = JPAContainerFactory
                .createEntityManagerForPersistenceUnit("targetentity");
        em.getTransaction().begin();
        for (int i = 0; i < 10; i++) {
            Data d = new Data();
            EconomicObject e = new AbstractEconomicObject();
            em.persist(e);
            d.setEconomicObject(e);
            em.persist(d);
        }
        em.getTransaction().commit();
    }

    @Override
    protected void init(VaadinRequest request) {
        JPAContainer<Data> container = JPAContainerFactory.make(Data.class,
                "targetentity");
        container.getEntityProvider().setLazyLoadingDelegate(
                new HibernateLazyLoadingDelegate());
        Table t = new Table(null, container);
        setContent(t);
    }

}