Utilities.java

/*
 * Copyright (C) 2016 maartenl
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package awesomeness.vaadin.utils;

import com.vaadin.addon.jpacontainer.JPAContainer;
import com.vaadin.addon.jpacontainer.JPAContainerFactory;
import com.vaadin.server.Sizeable;
import com.vaadin.ui.Table;
import javax.persistence.EntityManager;

/**
 *
 * @author maartenl
 */
public class Utilities
{

  private Utilities()
  {
  }

  /**
   * Creates a {@link JPAContainer} via JNDI.
   *
   * @param <T> the entity to retrieve the JPAContainer for.
   * @param clazz the Class of the entity.
   * @return a JPAContainer if all is well.
   */
  public static <T> JPAContainer<T> getJPAContainer(Class<T> clazz)
  {
    final JPAContainer<T> container = JPAContainerFactory.makeJndi(clazz);
    EntityManager entityManager = container.getEntityProvider().getEntityManager();
    return container;
  }

  public static void setTableSize(Table table)
  {
    table.setWidth(95, Sizeable.Unit.PERCENTAGE);
    table.setHeight(100, Sizeable.Unit.PERCENTAGE);
  }

}