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Normalize the data in JSON [closed]

asked 2018-12-02 16:50:16 -0500

srinath_222 gravatar image

updated 2018-12-02 17:17:16 -0500


I have the input data in below format: { "kind": "insert", "table": "test", "columnnames": ["col1", "description"], "columntypes": ["integer", "character varying"], "columnvalues": [5, "test5"] }

I need the target data as: { "kind":"insert", "table":"test", "col1":"5", "description":"test5" }

I need to normalize the data getting key and value pairs from different arrays. I am trying with processors Field Pivoter, Field Merger and Field Flattener. But did not give the required results.

Please suggest me approach to normalize the data and load into MongoDB

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Closed for the following reason the question is answered, right answer was accepted by srinath_222
close date 2018-12-06 14:11:16.384252

2 Answers

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answered 2018-12-03 10:55:08 -0500

iamontheinet gravatar image


Use one of the scripting processors. For example, in Jython you'd write the following code:

for record in records:
    #Loop through column names array & create root level fields for each column with respective values from column values list 
    for index,col in enumerate(record.value['columnnames']):
      record.value[col] = record.value['columnvalues'][index]

    #Optionally delete original lists
    del record.value['columnnames']
    del record.value['columntypes']
    del record.value['columnvalues']

    # Write record to processor output
  except Exception as e:
    # Send record to error
    error.write(record, str(e))

This code will result in the following:

image description

Hope this helps.

Cheers, Dash

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answered 2018-12-03 12:07:09 -0500

srinath_222 gravatar image

Cheers. That worked and I am able to transform the data.

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Asked: 2018-12-02 16:50:16 -0500

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Last updated: Dec 03 '18