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MongoDB.CursorNext

Queries the next record as JSON.

Component Version macOS Windows Linux Server iOS SDK
MongoDB 12.3 ✅ Yes ✅ Yes ✅ Yes ✅ Yes ✅ Yes
MBS( "MongoDB.CursorNext"; MongoDBRef )   More

Parameters

Parameter Description Example
MongoDBRef The reference number for the mongo connection. $MongoDB

Result

Returns JSON, empty or error.

Description

Queries the next record as JSON.
This function returns a JSON document was read from the cursor.
Otherwise, "" is returned if the cursor was exhausted.
And it can return an error in other cases like a dropped connection.

Examples

Loop over cursor:

# get cursor for records describing collections
Set Variable [ $r ; Value: MBS( "MongoDB.FindCollections"; $Mongo) ]
# loop over records and show each
Loop
    Set Variable [ $json ; Value: MBS( "MongoDB.CursorNext"; $Mongo) ]
    Exit Loop If [ MBS("IsError") // some error like connection dropped ]
    Exit Loop If [ Length ( $json ) = 0 // end of cursor ]
    Show Custom Dialog [ "Record" ; $json ]
    Exit Loop If [ Get(LastMessageChoice) = 2 // cancel clicked ]
End Loop

See also

Example Databases

Created 22nd May 2022, last changed 20th June 2022


MongoDB.CursorMore - MongoDB.CursorSetBatchSize

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