struts2RestJpaBootstrap - book service

BookServices.java

package org.demo.business.service;

import java.util.List;

import org.demo.util.EntityManagerHelper;
import org.demo.vo.bean.Book;
import org.demo.vo.dao.JpaBookDAO;

import com.opensymphony.xwork2.util.logging.Logger;
import com.opensymphony.xwork2.util.logging.LoggerFactory;

public class BookServices implements IServices<Book, Integer> {

	protected final Logger LOG = LoggerFactory.getLogger(BookServices.class);

	public Book load(Integer id) {
		if (LOG.isDebugEnabled()) LOG.debug("load");
		EntityManagerHelper.beginTransaction();
		JpaBookDAO bookDAO = new JpaBookDAO();
		Book book = bookDAO.findById(id);
		EntityManagerHelper.commitAndCloseEntityManager();
		return book ;
	}

	public void save(Book entity) {
		if (LOG.isDebugEnabled()) LOG.debug("save");
		EntityManagerHelper.beginTransaction();
		JpaBookDAO bookDAO = new JpaBookDAO();
		bookDAO.update(entity);
		EntityManagerHelper.commitAndCloseEntityManager();
	}

	public void delete(Integer id) {
		if (LOG.isDebugEnabled()) LOG.debug("delete");
		EntityManagerHelper.beginTransaction();
		JpaBookDAO bookDAO = new JpaBookDAO();
		bookDAO.delete(id);
		EntityManagerHelper.commitAndCloseEntityManager();	
	}

	public List<Book> search(Book book) {
		if (LOG.isDebugEnabled()) LOG.debug("search");
		EntityManagerHelper.beginTransaction();
		JpaBookDAO bookDAO = new JpaBookDAO();
		List<Book> liste = bookDAO.search(book);
		EntityManagerHelper.commitAndCloseEntityManager();
		return liste;
	}

}