$elemMatch equivalent in spring data mongodb

问题

I need to know the equivalent code in spring data mongo db to the code below:-

db.inventory.find( {
                     qty: { $all: [
                                    { "$elemMatch" : { size: "M", num: { $gt: 50} } },
                                    { "$elemMatch" : { num : 100, color: "green" } }
                                  ] }
                   } )

回答1:

I am able to get the answer. This can be done in Spring data mongodb using following code

Query query = new Query();      
query.addCriteria(Criteria.where("qty").elemMatch(Criteria.where("size").is("M").and("num").gt(50).elemMatch(Criteria.where("num").is(100).and("color").is("green"))));

回答2:

I think query in your answer generated below query

{ "qty" : { "$elemMatch" : { "num" : 100 , "color" : "green"}}}

I think thats not you need.

Its only check last elemMatch expression not all.

Try with this.

query = new Query();
Criteria first = Criteria.where("qty").elemMatch(Criteria.where("size").is("M").and("num").gt(50));
Criteria two = Criteria.where("qty").elemMatch(Criteria.where("num").is(100).and("color").is("green"));
query.addCriteria(new Criteria().andOperator(first, two));

来源：https://stackoverflow.com/questions/28874941/elemmatch-equivalent-in-spring-data-mongodb