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Super User
Super User

Strategy for handling multiple JSON schemas

Hello!

I'm a day and a half into this Flow at this point! Wow. Learning a LOT! Feel like I'm down to one final problem to solve (yeah right 🙂 ). Hoping someone can assist here.

Scenario:

  • Multiple Sharepoint lists (12) need to be migrated to flat files (for processing)
  • Some are > 5k items
  • Using the 'Send an HTTP request to Sharepoint' Action to query the lists
  • Parse the JSON response of each
  • Create a .json file of data on file system

Problem:

  • Because there are 12 lists, there are 12 JSON schemas to parse
  • I need a method for making the Parse JSON action dynamic so I can populate the schema based on the parsed list

Ideas for this one?

5 REPLIES 5
Dual Super User
Dual Super User

Re: Strategy for handling multiple JSON schemas

I don't think there is a way to make the schemas dynamic.  But you could use a Switch statement on some defining value to select which Parse Json action to use in your stream. 



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Super User
Super User

Re: Strategy for handling multiple JSON schemas

Thanks for the reply @Pstork1 . I appreciate you thinking about this. Feels like it would be VERY valuable to be able to add Dynamic Content to the Parse JSON action to accommodate this. 

Example:

  • Send an HTTP request to Sharepoint List 1 (to obtain schema)
  • Parse JSON 1 and save output as a varSchema
  • Later in the Flow...
    • Send an HTTP request to Sharepoint List 1 with full query
    • Parse JSON 2 and pass varSchema
    • Create file/etc.

No need for a Switch statement with 12 (or more!) options. 

Or even more ideal, specify a URL where the schema is stored and have Flow fetch it.

@TopShelf-MSFT @RezaDorrani@ScottShearer , @yashag2255 ... thoughts on this one?

Dual Super User
Dual Super User

Re: Strategy for handling multiple JSON schemas

I agree it would be useful, but it doesn't exist today and I don't think you will see it anytime soon.



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Super User
Super User

Re: Strategy for handling multiple JSON schemas

Well lets not get pessimistic! 🙂

Dual Super User
Dual Super User

Re: Strategy for handling multiple JSON schemas

Hi @ericonline 

 

Switch action for 12 defined parse json actions as suggested by @Pstork1 will work

 

It can be made dynamic but would involve a lot of work with expressions

For example - when you query the list and get the response

You can run a for loop on the response results using expression:-

body('action_name')?['d']?['results'] - This will point to the array response of items

 

Next within the for loop to read each item,

use expression item()?['columninternalname']

 

To make columninternalname - dynamic - you would need to first query the column names and store them also in a collection

so within the loop for the items array

 

run another loop on the collection(array) of internal names and then use expression

items('Main_loop_name')?[item()]  

Main_loop_name - is the name of the main for loop (body('action_name')?['d']?['results'])

item() - will give you the current column name from the columns array

 

Regards,

Reza Dorrani

 

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly

 

 

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