MongoTemplate拉子文档 [英] MongoTemplate pull subdocument

问题描述

我需要在MongoTemplate中提取子文档，但无法弄清楚该怎么做.

I need to pull a subdocument in MongoTemplate but cannot figure out how to do it.

我保存的文档是:

{
    "_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. 执行以下命令可以正常工作:

I need to remove only the test that has MyExperiment1. Executing the following command works:

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

我应该如何使用Spring MongoTemplate编写此代码?

How should I write this using Spring MongoTemplate?

我尝试了以下操作，但不起作用:

I have tried the following, but does not work:

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

谢谢.

推荐答案

似乎可行:

this.mongoTemplate.updateMulti(new Query(),
        new Update().pull("tests", Query.query(Criteria.where("experiment.$id").is("MyExperiment1"))), USERS_COLLECTION_NAME);

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