This plug-in can use the blueprint to operate the Mongo…
目录（Contents）
- 1. Node Description
- DT MongoDB | Client
- DT MongoDB | Collection
- DT MongoDB | Document
- Create Mongo DB Document
- To MongoDB Document (MongoDB Oid)
- To MongoDB Document (Json)
- To MongoDB Document (MongoDB View)
- To MongoDB Document (Map String)
- To MongoDB Document (Map Bool)
- To MongoDB Document (Map Int64)
- To MongoDB Document (Map Float)
- To MongoDB Document (Map Double)
- To MongoDB Document (Map MongoDB Document)
- To Map String (MongoDB Document)
- To Json (MongoDB Document)
- Add Bool
- Add String
- Add Int 32
- Add Int 64
- Add Float
- Add Double
- Add Document
- Add View
- Add Bool Array
- Add String Array
- Add Int 32 Array
- Add Int 64 Array
- Add Float Array
- Add Double Array
- Add Document Array
- DT MongoDB | View
- Is Empty
- Get Oid
- To Json String (MongoDB View)
- To Json Array String (MongoDB View Array)
- Get Element
- Is Undefined
- Is Max Key
- Is Min Key
- Is Double
- Is String
- Is View
- Is Array
- Is Binary
- Is Oid
- Is Bool
- Is Date
- Is Regex
- Is DB Pointer
- Is Code
- Is Symbol
- Is Code With Scope
- Is Int 32
- Is Timestamp
- Is Int 64
- Is Decimal 128
- Get Double
- Get String
- Get View
- Get Array
- Get Binary
- Get Object Id
- Get Bool
- Get Date
- Get Regex
- Get DB Pointer
- Get Code
- Get Symbol
- Get Code With Scope
- Get Int 32
- Get Timestamp
- Get Int 64
- Get Decimal 128
- DT MongoDB | Oid
- DT MongoDB | Element
- To String (MongoDB Element)
- To String (MongoDB Element Array)
- Is Empty
- Is Undefined
- Is Null
- Is Max Key
- Is Min Key
- Is Double
- Is String
- Is View
- Is Array
- Is Binary
- Is Oid
- Is Bool
- Is Date
- Is Regex
- Is DB Pointer
- Is Code
- Is Symbol
- Is Code With Scope
- Is Int 32
- Is Timestamp
- Is Int 64
- Is Decimal 128
- Get Double
- Get String
- Get View
- Get Array
- Get Binary
- Get Oid
- Get Bool
- Get Date
- Get Regex
- Get DB Pointer
- Get Code
- Get Symbol
- Get Code With Scope
- Get Int 32
- Get Timestamp
- Get Int 64
- Get Decimal 128
- 2. Case Presentation
- 3. Download Link
1. Node Description
DT MongoDB | Client
Create MongoDB Client
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-108.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Create an MongoDB client object
Connect By Url
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-110.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
ConnectB MongoDB server
Param Url : mongoDB://account:password@ip:port e.g. mongodb://admin:[email protected]:27017
or mongoDB://ip:port e.g. mongodb://127.0.0.1:27017
Get Collection
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-111.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Get MongoDB specifying collection
DT MongoDB | Collection
Insert One
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-113.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Inserts a single document into the collection. If the document is missing an identifier
(_id field) one will be generated for it.
Param MongoDB Document : The document to insert.
Insert Many
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-114.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Inserts multiple documents into the collection. If any of the documents are missing
identifiers the driver will generate them.
Warning This method uses the bulk insert command to execute the insertion as opposed to
the legacy OP_INSERT wire protocol message. As a result, using this method to insert many
documents on MongoDB < 2.6 will be slow.
Param MongoDB Documents : Array of a documents to insert.
Delete One
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-115.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Deletes a single matching document from the collection.
Param Filter : Document view representing the data to be deleted.
Delete Many
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-116.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Deletes all matching documents from the collection.
Param Filter : Document view representing the data to be deleted.
Replace One
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-117.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Replaces a single document matching the provided filter in this collection.
Param Filter : Document representing the match criteria.
Param MongoDB Document : The replacement document.
Update One
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-118.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Updates a single document matching the provided filter in this collection.
Param Filter : Document representing the match criteria.
Param MongoDB Document : Document representing the update to be applied to a matching document.
Update Many
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-119.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Updates multiple documents matching the provided filter in this collection.
Param Filter : Document representing the match criteria.
Param MongoDB Document : Document representing the update to be applied to matching documents.
Find
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-120.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Finds a single document in this collection that match the provided filter.
Param Filter : Document view representing a document that should match the query.
Find One
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-121.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Finds a single document in this collection that match the provided filter.
Param Filter : Document view representing a document that should match the query.
DT MongoDB | Document
Create Mongo DB Document
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-122.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Create an MongoDB document object
To MongoDB Document (MongoDB Oid)
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-123.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
MongoDB Oid to MongoDB document
To MongoDB Document (Json)
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-124.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Json String to MongoDB document
To MongoDB Document (MongoDB View)
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-125.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
DT MongoDB View to MongoDB document
To MongoDB Document (Map String)
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-126.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Map String to MongoDB document
To MongoDB Document (Map Bool)
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-127.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Map Bool to MongoDB document
To MongoDB Document (Map Int64)
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-128.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Map Int64 to MongoDB document
To MongoDB Document (Map Float)
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-129.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Map Float to MongoDB document
To MongoDB Document (Map Double)
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-130.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Map Double to MongoDB document
To MongoDB Document (Map MongoDB Document)
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-131.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Map MongoDB document to MongoDB document
To Map String (MongoDB Document)
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-132.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
MongoDB document to Map String
To Json (MongoDB Document)
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-133.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
MongoDB document to Json String
Add Bool
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-134.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Add bool data to document
Add String
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-135.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Add string data to document
Add Int 32
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-136.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Add int data to document
Add Int 64
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-137.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Add int64 data to document
Add Float
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-138.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Add float data to document
Add Double
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-139.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Add double data to document
Add Document
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-140.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Add document data to document
Add View
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-141.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Add MongoDB View data to document
Add Bool Array
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-142.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Add bool array data to document
Add String Array
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-143.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Add string array data to document
Add Int 32 Array
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-144.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Add int array data to document
Add Int 64 Array
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-145.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Add int64 array data to document
Add Float Array
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-146.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Add float array data to document
Add Double Array
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-147.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Add double array data to document
Add Document Array
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-149.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Add document array data to document
DT MongoDB | View
Is Empty
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-150.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Check if the view is empty
Get Oid
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-151.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Get the Oid of the view element
To Json String (MongoDB View)
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-152.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Convert the view to a Json string
To Json Array String (MongoDB View Array)
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-153.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
View array to Json string
Get Element
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-154.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Get the element specified by the view
Is Undefined
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-155.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the specified element is Undefined
Is Max Key
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-156.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the specified element is Max Key
Is Min Key
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-157.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the specified element is Min Key。
Is Double
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-158.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the specified element is a Double
Is String
Determine whether the specified element is a string
Is View
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-159.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the specified element is a view
Is Array
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-160.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the specified element is an array
Is Binary
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-161.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the specified element is Binary
Is Oid
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-162.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the specified element is an Oid
Is Bool
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-163.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the specified element is Bool
Is Date
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-164.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the specified element is a Date
Is Regex
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-165.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the specified element is a Regex
Is DB Pointer
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-166.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the specified element is a DB Pointer
Is Code
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-167.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the specified element is Code
Is Symbol
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-168.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the specified element is a Symbol
Is Code With Scope
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-169.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the specified element is Code With Scope
Is Int 32
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-170.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the specified element is an Int 32
Is Timestamp
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-171.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the specified element is a Timestamp
Is Int 64
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-172.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the specified element is an Int 64
Is Decimal 128
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-173.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the specified element is Decimal 128
Get Double
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-174.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Get the Double value of the specified element, or return 0.0 if the specified element type is incorrect.
Get String
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-175.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Get the string of the specified element, and return an empty string if the type of the specified element is wrong.
Get View
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-176.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Get the view of the specified element, or return an empty view if the specified element type is incorrect.
Get Array
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-177.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Get the element array of the specified element, and return an empty array if the specified element type is incorrect.
Get Binary
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-178.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Get the Binary of the specified element, if the type of the specified element is incorrect, return empty data.
Get Object Id
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-179.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Get the Oid of the specified element, if the specified element type is incorrect, return empty data.
Get Bool
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-180.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Get the Bool of the specified element, and return false if the specified element type is wrong.
Get Date
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-181.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Get the Date of the specified element, and return 0 if the specified element type is incorrect.
Get Regex
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-182.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Get the Regex of the specified element, if the specified element type is incorrect, return empty data.
Get DB Pointer
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-184.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Get the DB Pointer of the specified element, if the specified element type is wrong, return empty data.
Get Code
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-185.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Get the Code of the specified element, and return empty data if the specified element type is wrong.
Get Symbol
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-186.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Get the Symbol of the specified element, if the specified element type is incorrect, return empty data.
Get Code With Scope
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-187.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Get the Get Code With Scope of the specified element, and return empty data if the specified element type is wrong.
Get Int 32
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-188.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Get the Int 32 of the specified element, or return 0 if the specified element type is incorrect.
Get Timestamp
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-189.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Get the Timestamp of the specified element, and return 0 if the specified element type is wrong.
Get Int 64
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-190.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Get the Int 64 of the specified element, or return 0 if the specified element type is incorrect.
Get Decimal 128
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-191.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Get the Decimal 128 of the specified element, if the specified element type is incorrect, return empty data.
DT MongoDB | Oid
Make MongoDB Oid
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-192.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Create a DT MongoDB Oid object
To String (MongoDB Oid)
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-193.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Oid to string
DT MongoDB | Element
To String (MongoDB Element)
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-194.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
element to string
To String (MongoDB Element Array)
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-195.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Array elements converted to strings, split using the passed in symbols.
Is Empty
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-196.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Check if the current element is empty.
Is Undefined
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-197.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the current element is Undefined.
Is Null
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-198.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the current element is Null.
Is Max Key
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-199.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the current element is Max Key.
Is Min Key
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-200.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the current element is a Min Key.
Is Double
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-201.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the current element is a Double.
Is String
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-202.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Oid turns to judge whether the current element is a string.
Is View
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-203.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the current element is a view.
Is Array
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-204.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the current element is an array.
Is Binary
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-205.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the current element is Binary.
Is Oid
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-206.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the current element is an Oid.
Is Bool
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-207.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the current element is Bool.
Is Date
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-208.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the current element is a Date.
Is Regex
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-209.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the current element is a Regex.
Is DB Pointer
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-210.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the current element is a Pointer.
Is Code
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-211.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the current element is Code.
Is Symbol
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-212.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the current element is a Symbol.
Is Code With Scope
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-213.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the current element is Code With Scope.
Is Int 32
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-214.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the current element is an Int 32.
Is Timestamp
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-215.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the current element is a Timestamp.
Is Int 64
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-216.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the current element is an Int 64.
Is Decimal 128
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-217.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Determine whether the current element is Decimal 128.
Get Double
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-218.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Convert the current element to Double, and return 0 if the type is incorrect.
Get String
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-219.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Convert the current element to String, and return an empty string if the type is wrong.
Get View
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-220.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Convert the current element to a view, or return an empty view if the type is wrong.
Get Array
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-221.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
转换当前元素为 元素数组， 如果类型不对返回空数组。
Get Binary
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-222.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Convert the current element to Binary, and return empty data if the type is wrong.
Get Oid
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-223.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Convert the current element to Oid, and return empty data if the type is incorrect.
Get Bool
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-224.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Convert the current element to Bool, and return False if the type is wrong.
Get Date
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-225.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Convert the current element to Date, and return 0 if the type is wrong.
Get Regex
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-226.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Convert the current element to Regex, and return empty data if the type is wrong.
Get DB Pointer
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-227.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Convert the current element to DB Pointer, and return empty data if the type is wrong.
Get Code
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-228.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Convert the current element to Code, and return empty data if the type is incorrect.
Get Symbol
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-229.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Convert the current element to Symbol, and return empty data if the type is wrong.
Get Code With Scope
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-230.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Convert the current element to Code With Scope, and return empty data if the type is incorrect.
Get Int 32
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-231.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Convert the current element to Int 32, and return 0 if the type is wrong.
Get Timestamp
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-232.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Convert the current element to Timestamp, and return 0 if the type is wrong.
Get Int 64
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-233.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Convert the current element to Get Int 64, and return 0 if the type is wrong.
Get Decimal 128
![[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.](https://dt.cq.cn/wp-content/uploads/2023/07/image-234.png "[Unreal Engine MongoDB Client plug-in description] DTMongoDB MongoDB database connection plug-in, UE blueprint can operate MongoDB database addition, deletion, modification and query.")
Convert the current element to Get Decimal 128, and return empty data if the type is incorrect.
hope you can understand me, i believe one crucial feature is missing, a connections success, like you have in your mqtt one.
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