currencyservice.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.Currency;

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

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

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

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

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

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