moduleitemservice.java

HR系统模拟企业对内部职员的管理

/*$Id: ModuleItemService.java,v 1.1 2008/07/15 03:38:23 liqi Exp $
 *--------------------------------------
 * Apusic (Kingdee Middleware)
 *---------------------------------------
 * Copyright By Apusic ,All right Reserved
 * author   date   comment
 * chenhongxin  2008-4-14  Created
*/
package org.operamasks.example.ejb.hr.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.hr.entity.ModuleItem;

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

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

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

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

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

	public List<ModuleItem> findByIds(List<String> ids) {
		if(ids == null || ids.size() == 0) {
			//取消使用Collections.emptyList()，因为
			//它是不可克隆的，如果使用这个List进行持久化
			//则会出现CloneNotSupportedException
			//return Collections.emptyList();
			return new ArrayList<ModuleItem>(0);
		}
		
		StringBuilder querySb = new StringBuilder("SELECT o FROM ModuleItem o where ");
		for(String id : ids) {
			querySb.append("o.id='");
			querySb.append(id);
			querySb.append("' or ");
		}
		int pos = querySb.lastIndexOf("or");
		querySb.delete(pos, pos + 2);
		
		Query q = _innerDao.createQuery(querySb.toString());
		return q.getResultList();
	}
}