mongodb criteria查询

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http://blog.csdn.net/ni_hao_ya/article/details/26384467

//is相当于等于
//in相当于sql中的in
//ne相当于不等于
//orOperator接受多个条件，组成or逻辑

 

query.addCriteria(Criteria.where("modelId").ne("").ne(null));
query.with(new Sort(new Order(Direction.DESC, "ct")));

 

 

Query query=new Query();
Criteria criteria=Criteria.where("name").is("tom")
                           .and("studentNum").in(numberList);
query.addCriteria(criteria);

或new Query(criteria);

Criteria criteria=Criteria.where("indexWarnGrade").ne("0")
                           .orOperator(Criteria.where("resId")
                           .is(channelId),
Criteria.where("resBelongChannelId").is(channelId));
query.addCriteria(criteria);
query.with(new Sort(Direction.DESC, "indexWarnLatelyDate"));

//分页
int currentPage = (initPagingBean.getStart()/initPagingBean.getPageSize())+1;
Query query=new Query();
        //查询通道和通道下属的设备告警信息
        Criteria criteria=Criteria.where("indexWarnGrade").ne("0")
              .orOperator(Criteria.where("resId")
              .is(channelId)
  Criteria.where("resBelongChannelId").is(channelId));
        query.addCriteria(criteria);
        query.with(new Sort(Direction.DESC, "indexWarnLatelyDate"));
        int total = (int) this.realMongodbServiceImpl.
              findCount(MonitorObject.class, query);
        initPagingBean.setTotalItems(total);
 //查询mo集合
 List moList=this.realMongodbServiceImpl.
findList(MonitorObject.class, query, currentPage, initPagingBean.getPageSize());

initPagingBean.setDataList(wvList);
return  initPagingBean;

 

 

多个字段排序：第一排序按照sort降序，第二排序按照ct降序

query.with(new Sort(new Order(Direction.DESC, "sort"))
             .and(new Sort(Direction.DESC,"ct")));
//query.sort().on("xxx", Order.DESCENDING);
//query.sort().on("xxx", Order.ASCENDING);