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This operator can be used to translate an object (e.g.  key-value/json object) to a tuple. In KeyValue case Names are JSON-Path Exceptions. If names contains special chars like ".", "*", etc. the chars will be replaced by "_".  To define own names you ['Path','Name','Type'] in the schema.

Parameter

  • schema: The list of requested attributes (keys) and their data type.
  • type: The type of the output tuple
  • dateFormat: Can be used to format the timestamp. To create a timestamp an attribute of data type STARTTIMESTAMP or ENDTIMESTAMP has to be added to schema.

Example 1

Example
out = TOTUPLE({
          schema=[['Name', 'Double']],
          type='Measurement'
        },
        in
      )

Example 2

Assume that a data source in sends key-value-pairs about persons in the following (JSON-)format: 

{person.name="Max", person.age=22, timestamp=11123}

Then, reading the name (and timestamp) is as follows:

Example
out = TOTUPLE({
          schema=[['person.name', 'String'], ['timestamp', 'STARTTIMESTAMP']],
          type='Measurement'
        },
        in
      )