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Removing Data from MongoDB

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Removing Data from MongoDB

Removing existing data from a MongoDB is accomplished using a Process Task and the Procedure.Mongo Remove element.

In the example above, a Process Task has been defined that includes a Procedure.Mongo Remove element and its attributes have been set to delete any documents in the "Products" collection that include a UnitPrice equal to the value of a @Request token.

The Procedure.Mongo Remove element's attributes include:

AttributeDescription
Connection ID (Required) Specifies the ID of a Connection.MongoDB element in the application's _Settings definition.
ID (Required) A unique element ID.
Mongo Collection (Required) Specifies the name of the document collection to open. This value is case-sensitive.
Mongo Query Document Specifies a Mongo "find" document to identify one or more documents. Examples:
Find all documents with "type" equal to "snacks".
{ type: "snacks" }

Find all documents with "type" equal to "food" or "snacks"
{ type: { $in: [ 'food', 'snacks' ] } }
To vary the document content based on user or other input, use tokens, such as @Request, inside the document.
Mongo Write ConcernSpecifies whether the procedure should wait for acknowledgement of the write operation.
The default value is Acknowledged, meaning wait for acknowledgement.
Multiple DocumentsSpecifies whether this command should affect multiple documents. The default value is False.

After a remove procedure runs, you can use the special token @Procedure.myProcMongoRemoveID.DocumentsAffected~ to report the number of documents actually removed by the operation.

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