How to convert json response to CDT

RE: How to convert json response to CDT

Peter Lewis — Wed, 27 May 2020 20:58:20 GMT

If the names are exactly the same in your CDT as the JSON, you can also cast them rather than having to re-write each parameter name. The only downside is you might have to create several nested CDTs to match the data structure. Once you do that though, you could just do this to cast to the correct type:

a!localVariables(
  local!result: rule!YourIntegrationRule(),
  cast(
    type!YourTypeName,
    a!fromJson(local!result)
  )
)

RE: How to convert json response to CDT

davel001150 — Wed, 27 May 2020 14:00:50 GMT

Once you get the dictionary going, you can use a helper rule you write to accept the dictionary, and use type() function to output your CDT.

You would literally just write:

type!yourCDTName(

lon: ri!input.lon,

lat: ri!input.lat,

...

)

Every field has to be typed twice per line for every field, assuming your CDT and the JSON have exactly the same names for every field. It will be tedious, so very good if your CDT structure is very solid and clearly not changing in the future. I'd hate for you to have to go through that tedium twice.

RE: How to convert json response to CDT

Stewart Burchell — Wed, 27 May 2020 11:46:34 GMT

Hi Varsha - I think you may have pasted the wrong text here, or pasted the right text but in the wrong place...

RE: How to convert json response to CDT

varsha sri — Wed, 27 May 2020 11:35:27 GMT

[deleted]

RE: How to convert json response to CDT

Stewart Burchell — Wed, 27 May 2020 11:32:49 GMT

If you take the JSON you've provided and use the fn!fromJson() this will convert it to an Appian Dictionary (essentially a set of name/value pairs):

What specific need do you have in order to place this into a CDT?