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  1. Core Server
  2. SERVER-15245

findAndModify fail to addToSet a field, while querying by the same field.

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    • Type: Icon: Bug Bug
    • Resolution: Duplicate
    • Priority: Icon: Major - P3 Major - P3
    • None
    • Affects Version/s: 2.6.2
    • Component/s: None
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      1. create a new empty collection "users"
      2. Execute the following query, should fail

      > db.users.findAndModify({query: {emails:"test@gmail.com"}, update:{"$addToSet": {"emails": "test@gmail.com"}, "$set": {"name": "Tamer"}}, upsert: true})
2014-09-12T22:25:15.414+0300 findAndModifyFailed failed: {
	"value" : null,
	"errmsg" : "exception: Cannot apply $addToSet to a non-array field. Field named 'emails' has a non-array type String in the document INVALID-MUTABLE-ELEMENT",
	"code" : 16836,
	"ok" : 0
} at src/mongo/shell/collection.js:614

      3. Execute this query, should pass

      > db.users.findAndModify({query: {emails: {$elemMatch: { $regex: 'test@gmail.com', $options: 'i' }}}, update:{"$addToSet": {"emails": "test@gmail.com"}, "$set": {"name": "Tamer"}}, upsert: true})
null
> db.users.find()
{ "_id" : ObjectId("541349cd912259e2bc9c311b"), "emails" : [ "test@gmail.com" ], "name" : "Tamer" }
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      1. create a new empty collection "users" 2. Execute the following query, should fail > db.users.findAndModify({query: {emails: "test@gmail.com" }, update:{ "$addToSet" : { "emails" : "test@gmail.com" }, "$set" : { "name" : "Tamer" }}, upsert: true }) 2014-09-12T22:25:15.414+0300 findAndModifyFailed failed: { "value" : null , "errmsg" : "exception: Cannot apply $addToSet to a non-array field. Field named 'emails' has a non-array type String in the document INVALID-MUTABLE-ELEMENT" , "code" : 16836, "ok" : 0 } at src/mongo/shell/collection.js:614 3. Execute this query, should pass > db.users.findAndModify({query: {emails: {$elemMatch: { $regex: 'test@gmail.com' , $options: 'i' }}}, update:{ "$addToSet" : { "emails" : "test@gmail.com" }, "$set" : { "name" : "Tamer" }}, upsert: true }) null > db.users.find() { "_id" : ObjectId( "541349cd912259e2bc9c311b" ), "emails" : [ "test@gmail.com" ], "name" : "Tamer" }

      Read Steps To Reproduce first.
      I think findAndModify with upsert flag in case the object is not found, uses the query as the schema of the object. Query like:

      {emails:"test@gmail.com"}

      makes Mongodb thinks emails field contain string (although the collection is empty). While query like {$elemMatch: { $regex: 'test@gmail.com', $options: 'i' }} works just fine.

      I tested only on v2.6.2

      Note: Replacing $addToSet with $push, results in the same issues.

            Assignee:
            Unassigned Unassigned
            Reporter:
            tabdulradi Tamer Mohammed AbdulRadi
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              Created:
              Updated:
              Resolved: