Question

你好，我有一个像这样的集合“”_id“：ObjectId（”55dabba974cd60712be24443“），

    "entityType" : "1",
    "entityCreatedDate" : "08/24/2015 12:07:20 PM",
    "nameIdentity" : [
            {
                    "givenNameOne" : "JOY",
                    "givenNameThree" : "BRAKEL",
                    "lastName" : "BRAKEL",
                    "createdDate" : "08/24/2015 12:07:20 PM",
                    "sourceId" : [
                            {
                                    "sourceId" : "55dabba974cd60712be24441"
                            }
                    ]
            },

    ],

Here name identity is a list as well as sourceId. I am trying to update sourceId list in nameIdentityList if it matches the names. My java code is :

Document sourceDocument=new Document("sourceId",sourceId);
mongoDatabase.getCollection("entity").updateOne(new Document("entityId", entityId).append("nameIdentity.givenNameOne","JOY"),
                                new Document("$push", new Document("nameIdentity.sourceId", sourceDocument)));

`但是我得到的异常就像java.lang.RuntimeException：com.mongodb.MongoWriteException：不能使用part（nameIdentity of nameIdentity.sourceId）来遍历元素（{nameIdentity。

如果我的情况满意，我期待这样：

`"_id" : ObjectId("55dabba974cd60712be24443"),

        "entityType" : "1",
        "entityCreatedDate" : "08/24/2015 12:07:20 PM",
        "nameIdentity" : [
                {
                        "givenNameOne" : "JOY",
                        "givenNameThree" : "BRAKEL",
                        "lastName" : "BRAKEL",
                        "createdDate" : "08/24/2015 12:07:20 PM",
                        "sourceId" : [
                                {
                                        "sourceId" : "55dabba974cd60712be24441"
                                },
                                {
                                        "sourceId" : "55dabba974cd60712be24435"
                                }
                        ]
                },

        ],`

。我有什么错误吗？我的nameIdentity中有多个名称，即使匹配的文档是第二个或第三个，sourceId也始终被添加到第一个文档中。如何更新到特定的匹配文档。

Answer 1

在＆＃34; nameIdentity＆＃34;之后，您错过了positional $运营商$push中的字段：

Document sourceDocument=new Document("sourceId",sourceId);
mongoDatabase.getCollection("entity").updateOne(
  new Document("entityId", entityId).append("nameIdentity.givenNameOne","JOY"),
  new Document("$push", new Document("nameIdentity.$.sourceId", sourceDocument))
);

与其他更新操作修饰符一样的$push操作需要知道＆＃34;索引＆＃34;要处理的匹配数组元素。否则会报告您报告的错误。

更新mongodb java中的嵌套数组列表

1 个答案: