mongo 过滤 分组查询

public List<Map<String,Object>> findHouseOneDetailGroupByResblockId() throws Exception {
		//返回一手楼盘信息
		List<Map<String,Object>> resblockOneIdList = new ArrayList<Map<String,Object>>();
		//设置分组函数，获取楼盘id、房源id、套均总价
		GroupBy groupBy = GroupBy
				.key("resblockOneId")
				.initialDocument("{resblockOneId:'0',houseHighPrice:0.0,houseOneId:'0'}")
				.reduceFunction(
					"function(doc, prev){ var houseHighPrice = (doc.totalprBegin+doc.totalprEnd)/2;if( houseHighPrice > prev.houseHighPrice){ prev.houseHighPrice=houseHighPrice;prev.resblockOneId = doc.resblockOneId;prev.houseOneId=doc._id;}}")
				;	
		//GroupByResults<MHouseOneDetail> result = mongoTemplate.group(MHouseOneDetail.collectionName, groupBy, MHouseOneDetail.class);

		/*Criteria criteria=Criteria.where("status").is(BusinessConstant.RESBLOCKONESTATUS)
				.andOperator(Criteria.where("isExhibition").is(BusinessConstant.ISEXHIBITION_YES));
		*/
		//过滤状态
		Criteria criteria=Criteria.where("status").is(BusinessConstant.RESBLOCK_ONE_STATUS)
				.and("isExhibition").is(BusinessConstant.ISEXHIBITION_YES);
		//执行查询	
		GroupByResults<MHouseOneDetail> result = mongoTemplate.group(criteria,MHouseOneDetail.collectionName, groupBy, MHouseOneDetail.class);
		BasicDBList list = (BasicDBList) result.getRawResults().get("retval");
		if(list==null){return null;}
		//遍历查询集合
		for (int i = 0; i < list.size(); i++) {
			BasicDBObject obj = (BasicDBObject) list.get(i);
			if(obj!=null){
				Map<String,Object> map = new HashMap<String, Object>();
				//一手楼盘id
				String resblockOneID = obj.get("resblockOneId").toString();
				//一手房源id
				String houseOneID= obj.get("houseOneId").toString();
				//最高房源套均总价
				Double houseHighPrice = (Double)obj.get("houseHighPrice");
				map.put("resblockOneID",resblockOneID );
				map.put("houseOneID",houseOneID);
				map.put("houseHighPrice", houseHighPrice);
				//添加到集合
				resblockOneIdList.add(map);
			}
		}
		return resblockOneIdList;
	}