查找并更新 MongoDBRepository
我的任务是创建扩展 MongoDBRepository 的存储库，它允许我定义一种 findAndUpdate 方法。不允许 MongoOps 和模板方法。这就是我的 MongoDocument 的样子：
{"_id":"somedocumentId","attributetype1":{"class":"type1","value":"somevalue"},
"attributetype2":{"class":"type2","value":"somevalue"},
"attributetype3":{{"class":"type2","value":"somevalue"},{"class":"type2","value":"somevalue"},...,}
正如您所看到的，一些属性只是类值，而其他属性是列表。 这是我从消息传递子系统收到的更新请求：
{"documentId":"somedocumentIdValue","updatedata":{"class":"typeX","value":"somevalue"}
如果请求数据的类型只是一个类值（如 attributetype1 和 2），我需要更新它，如果更新数据的类型保存为列表，我需要附加它。
在这种情况下你有什么建议？
My task is to create repository extending MongoDBRepository that allows me to define kind of findAndUpdate method. MongoOps and template approach is not allowed. This is how my MongoDocument looks like:
{"_id":"somedocumentId","attributetype1":{"class":"type1","value":"somevalue"},
"attributetype2":{"class":"type2","value":"somevalue"},
"attributetype3":{{"class":"type2","value":"somevalue"},{"class":"type2","value":"somevalue"},...,}
As you can see some atributes are just class values, while others are lists.
Here is the update request I receive from my messaging subsystem:
{"documentId":"somedocumentIdValue","updatedata":{"class":"typeX","value":"somevalue"}
If type of request data is just a class value (like attributetype1 and 2) I need to update it, if update data is of type that is save as a list I need to append it.
What would you suggest in this case?
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您需要能够确定是否执行
$set或$push因此似乎有三种选择。更新消息传递子系统以包含操作员。
这可能不可行。
发出 findAndModify< /a> 与
$push。如果它不是数组，这将失败：
<块引用>
无法将 $push/$pushAll 修饰符应用于非数组
因此用
$set重新发出感觉像是黑客，但会起作用
执行一个返回文档的查询，并检查它，然后在更新查询中发出正确的运算符。
应用程序中需要更多代码
You need to be able to determine whether or not to do a
$setor a$pushso there seems to be three choices.Update the messaging subsystem to include the operator.
This may not be feasible..
Issue a findAndModify with a
$push.This will fail if its not an array:
So reissue with a
$setFeels like a hack but will work
Do a query that returns the document and inspect it and then issue the correct operator in an update query.
More code required in the application