相关疑难解决方法(0)

我需要在MongoTemplate中拉一个子文档,但无法弄清楚如何做到这一点.

我保存的文件是:

{
    "_id" : "FooUser",
    "_class" : "com.domain.User",
    "tests" : [ 
        {
            "variant" : {
                "_id" : "C",
                "probability" : "0.5"
            },
            "experiment" : {
                "$ref" : "experiment",
                "$id" : "MyExperiment2"
            }
        }, 
        {
            "variant" : {
                "_id" : "B",
                "probability" : "0.5"
            },
            "experiment" : {
                "$ref" : "experiment",
                "$id" : "MyExperiment1"
            }
        }
    ]
}

我只需要删除具有MyExperiment1的测试.执行以下命令有效:

db.user.update( {}, {$pull: { "tests":{"experiment.$id":"MyExperiment1"}}}, {multi: true} )

我应该如何使用Spring MongoTemplate编写这个？

我尝试了以下,但不起作用:

this.mongoTemplate.updateMulti(new Query(), new Update().pull("tests", "{\"experiment.$id\":\"MyExperiment1\"}"), "user");

谢谢.

我有JSON喜欢:

{ 
    "_id" : "1",
    "_class" : "com.model.Test",
    "itemList" : [
        {
            "itemID" : "1",
            "itemName" : "Foo",
            "resources" : [ 
                { 
                    "resourceID" : "1",
                    "resourceName" : "Foo Test1"
                 }, {
                    "resourceID" : "2",
                    "resourceName" : "Foo Test2"
                 }
             ]
        }
    ]
}

我需要能够删除itemList的记录之一.我做了以下事情:

public void removeItemByID(String docID, String itemID) throws Exception {
    MongoOperations mongoOperations = mongoConfiguration.getMongoTemplate();
    Query query = new   Query(where("_id").is(docID).and("itemList.itemID").is(itemID));
    mongoOperations.remove(query, Item.class);

}

这种方法不起作用.但是,当我使用带有$ pull方法的BasicDBObject时,它工作正常!这些方法有什么区别!