voucherservice.java

模拟简单的会计信息录入管理应用

package org.operamasks.example.ejb.gl.service;

import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.ejb.TransactionAttribute;
import javax.ejb.TransactionAttributeType;
import javax.persistence.Query;
import java.util.*;

import org.operamasks.example.ejb.gl.entity.Voucher;

/**
 * @generated
 */
@Stateless
@SuppressWarnings("unchecked")
public class VoucherService implements IVoucherService {
	/**
	 * @generated default persist manager
	 */
	@PersistenceContext
	private EntityManager _innerDao;

	/**
	 * @generated default persist method
	 */
	@TransactionAttribute(value = TransactionAttributeType.REQUIRED)
	public void createVoucher(Voucher vo) {
		_innerDao.persist(_innerDao.merge(vo));
	}

	/**
	 * @generated default persist method
	 */
	@TransactionAttribute(value = TransactionAttributeType.REQUIRED)
	public void modifyVoucher(Voucher vo) {
		_innerDao.merge(vo);
	}

	/**
	 * @generated default remove method
	 */
	@TransactionAttribute(value = TransactionAttributeType.REQUIRED)
	public void removeVoucher(Voucher vo) {
		Voucher managed = _innerDao.merge(vo);
		_innerDao.remove(managed);
	}

	/**
	 * @generated default query method
	 */
	@TransactionAttribute(value = TransactionAttributeType.REQUIRED)
	public List<Voucher> listVoucher() {
		Query q = _innerDao.createQuery("SELECT o FROM Voucher o ");
		return q.getResultList();
	}

	/**
	 * @generated default persist method
	 */
	@TransactionAttribute(value = TransactionAttributeType.REQUIRED)
	public Voucher getVoucher(String pk) {
		Query q = _innerDao
				.createQuery("SELECT o FROM Voucher o WHERE o.id = '" + pk
						+ "'");
		List<Voucher> result = q.getResultList();
		if (result.size() == 1)
			return result.get(0);
		return null;
	}

	public List<Voucher> getVouchers(int pageSize, int firstResultIndex) {
		Query q = _innerDao.createQuery("SELECT o FROM Voucher o ");
		q.setMaxResults(pageSize);
		q.setFirstResult(firstResultIndex);
		return q.getResultList();
	}

	public int getVouchersCount() {
		Query q = _innerDao.createQuery("SELECT COUNT(o) FROM Voucher o ");
		int count = ((Long) q.getSingleResult()).intValue();
		return count;
	}
}