json to json transformation in apigee

[#1]

I want to know how to do json to json transformation in apigee.

We can try javascript.But I guess transformation through javascript is going to be performance overhead.

Gone through this link http://stackoverflow.com/questions/13068267/json-to-json-transformer.And I wanted to know if there is any possibility of using any policy or library to do it in better way.

[DChiesa]

> We can try javascript.But I guess transformation through javascript is going to be performance overhead.

I think you should test your hypothesis. Using JS to transform JSON is ... an ideal use of Javascript.

If you have a specific scenario, a specific kind of transform, let me know, I may be able to help build an illustration.

[#3]

In apigee best practices doc,its adviced not to prefer javascript.

"JavaScript is preferred over Python and Java. However, if performance is the primary requirement, Java should be used over JavaScript."

I have hundreds of elements from the consumer that needs to be transformed to another json message with changes in attribute names.

For eg,

{
  "OldStudent": {
    "Id": 1,
    "Name": "Std1",
    "Class": 1,
    "School": "ABC"
  }
}

This has to be transformed into,
{
  "NewStudent": {
    "Id1": 1,
    "Name1": "Std1",
    "Class1": 1,
    "School1": "ABC"
  }
}

I just gave the above as an example.Basically most of the json attributes will undergo a change.My usecase is complex json with hundreds of attributes.The json object is a complex one.I like to know if anything similar to xslt here.

[DChiesa]

There is no JS equivalent to XSLT.

I think you should test your hypothesis.

If it performs poorly, we can work something out with Java. But first measure it.

[#5]

Sure Dino..I told that based upon the apigee bestpractices doc.It says java performs better than javascript

[Former Community Member]

You could consider something like this: https://github.com/joelvh/json2json