Manager-service-之Hibernate几种查询方式

Manager-service-之Hibernate几种查询方式,在需要情况下配合使用。


如果要用到：普通sql语句

public String getAllSubDepId(Long depId){
		String sql="select t.departmentid as id from department t start with   t.departmentid="+depId+" connect by   prior   t.departmentid=t.fatherdepartmentid";
		Session session = dao.getSessionFactory().getCurrentSession();
		List<Long> list=session.createSQLQuery(sql).addScalar("id",Hibernate.LONG).list();
		String ids="";
		for(int i=0;i<list.size();i++){
			ids=ids+list.get(i);
			if(i<list.size()-1)
				ids=ids+",";
		}
		return ids;
	}

带分页用HQL查询时候：

public Page<IdentityInfo> getViewObjectsNew(Page<IdentityInfo> page,IdentityInfo entity) {
		String hql="from IdentityInfo t where t.delFlag=0 ";
		if(entity.getDepartmentEntity()!=null&&entity.getDepartmentEntity().getDepartmentId()!=null && entity.getDepartmentEntity().getDepartmentId().compareTo(0l)>0){
				hql=hql+" and t.departmentEntity.id="+entity.getDepartmentEntity().getDepartmentId();			
		}else{
			User user=SessionManager.getUserSession();
			String hasAdminRole=roleManager.hasRole(user.getId(), 104l);
			if(hasAdminRole.equals("YES"))
				hql=hql+" ";
			else{
				String ids=departmentManager.getAllSubDepId(user.getDepartment().getId());
				hql=hql+"and t.departmentEntity.id in("+ids+") ";
			}
		}
		hql=hql+" order by t.priority,t.id";
		return dao.find(page, hql,null);
		
	}

用Criterion对象查询方式：

@Transactional(readOnly = true)
	public List<IdentityInfo> getAllIdentityInfo(Page<IdentityInfo> page,IdentityInfo entity) {
		List<Criterion> list = new ArrayList<Criterion>();
		if (entity.getName() != null && entity.getName().trim().length() > 0)
			list.add(Restrictions.like("name", '%' + entity.getName() + '%'));
		
		if (entity.getDepartmentEntity() != null && entity.getDepartmentEntity().getDepartmentId() != null &&entity.getDepartmentEntity().getDepartmentId().compareTo(0l)>0)
			list.add(Restrictions.eq("departmentEntity.departmentId", entity.getDepartmentEntity().getDepartmentId()));
		
		if (list.size() > 0)
			return dao.findByCriteria( list.toArray(new Criterion[list.size()]));
		
		else
			return dao.findAll();
	}
	

用对象的第2种形式：

public Page<ResTeam> getObjects(Page<ResTeam> page, ResTeam entity) {
		Criteria critera = dao.getSession().createCriteria(ResTeam.class);
		
		if (entity.getType()!= null && !entity.getType().equals("all")) {
			critera.add(Restrictions.like("type", '%' + StrUtils
					.removedPercent(entity.getType().trim()) + '%'));
		}
		if (entity.getName() != null && entity.getName().trim().length() > 0)
			critera.add(Restrictions.like("name", '%' + StrUtils
					.removedPercent(entity.getName().trim()) + '%'));
		if (entity.getStationInfo() != null) {
			String stationName = entity.getStationInfo().getStationName();
			if (stationName != null && stationName.trim().length() > 0) {
				critera.createAlias("stationInfo", "st");
				critera.add(Restrictions.like("st.stationName", '%' + StrUtils
						.removedPercent(stationName.trim()) + '%'));
			}
		}
		
		if (entity.getBaseOrg() != null && entity.getBaseOrg().getId()!=null)
		{
			critera.createAlias("baseOrg", "base");
			critera.add(Restrictions.eq("base.id", entity.getBaseOrg().getId()));
		}
		
		critera.add(Restrictions.not(Restrictions.eq("delflag", 1)));
		critera.addOrder(Order.desc("createDate"));
		
		return dao.findByCriteria(page, critera);
	}

3种方式对比：

public Page<GroupMember> getViewObjectsNew(Page<GroupMember> page,GroupMember entity) {
		*//********** 这里判断多个,首先部门对象不为空,然后部门对象的ID不为空  **********//*
		//法1：
			if(entity.getDepartmentEntity()!=null&&entity.getDepartmentEntity().getDepartmentId()!=null && entity.getDepartmentEntity().getDepartmentId().compareTo(0l)>0){
				String hql = "from GroupMember t where  t.departmentEntity.departmentId=?";
				return dao.find(page, hql, new Object[]{entity.getDepartmentEntity().getDepartmentId() });
		}else{
			return dao.findAll(page);
		}
		if(entity.getGpsEntity()!=null && entity.getGpsEntity().getId()!=null && entity.getGpsEntity().getId().compareTo(0l)>0){
			String hql="from GroupMember m where m.gpsEntity.id=?";
			return dao.find(page, hql, new Object[]{entity.getGpsEntity().getId()});
		}else{
			return dao.findAll(page);
		}
		
		//法2：
		Criteria criteria=dao.getSession().createCriteria(GroupMember.class);
		if(entity.getGpsEntity()!=null && entity.getGpsEntity().getId()!=null && entity.getGpsEntity().getId().compareTo(0l)>0){
			System.out.println(entity.getGpsEntity().getId()+"   ============manage id");
			criteria.add(Restrictions.eq("gpsEntity.id", entity.getGpsEntity().getId()));
		
		}
		return dao.findByCriteria(page, criteria);
		
	}
	
//法3：
	public Page<GroupMember> getMemberByGroup(Page<GroupMember> page,Long groupId) {
		String hql="from GroupMember t where t.gpsEntity.id=? and t.infoEntity.delFlag=0 order by infoEntity.departmentEntity.parent.divNum,infoEntity.departmentEntity.priority,infoEntity.priority,t.priority";
		//String hql="from GroupMember t where t.gpsEntity.id=? order by t.priority";
		
		return dao.find(page, hql, new Object[]{groupId});
	}