Generic JOLT spec for multiple input JSON

[Kannan998]

I am new to JOLT. I have 2 different set of input json of same structure except one object inside differs based on the decider value like below.

Eg: Input json 1

{
    "input": {
        "decider": 1,
        "object1": {
            "object1Info": 1,
            "obj1SpecificObj2": {
                "obj2info": "data"
            }
        },
        "doc": {
            "docId": "DOC100"
        }
    }
}

Eg: Input json 2

{
    "input": {
        "decider": 2,
        "object2": {
            "object2Info": 2,
            "obj2SpecificObj3": {
                "obj3info1": "data1",
                "obj3info2": "data2",
                "other": {
                    "otherData": "data3"
                }
            }
        },
        "doc": {
            "docId": "DOC100"
        }
    }
}

output expectation if decider : 1

{
    "out" : {
        "object" : {
            "info" : 1,
            "subObject" : {
                "subInfo" : "data"
            }
        },
        "doc": {
            "docId": "DOC100"
        }
    }
}

output expectation if decider : 2

{
    "out": {
        "object": {
            "info": 1,
            "subObject": {
                "subInfo1": "data1",
                "subInfo2": "data2",
                "other": {
                    "otherData": "data3"
                }
            }
        },
        "doc": {
            "docId": "DOC100"
        }
    }
}

I want to write a generic single conditional jolt spec which based on "decider" value output should be generated. Is there a way to write a conditional statement inside spec file....??

[milosimpson]

Look at examples
http://jolt-demo.appspot.com/#andrewkcarter1
http://jolt-demo.appspot.com/#andrewkcarter2

In your case you need to do two shifts.

1. to pivot the data based on the Decider
2. then you can write a spec that has specific parts to handle each type of doc

Example Spec

[
  {
    "operation": "shift",
    "spec": {
      "input": {
        "decider": {
          "*": {
            // match down to the "value" of the decider
            // Then "grab" the whole from 3 levels up the tree
            //  and write it to the output with a path that
            //  contains the decider value
            "@3": "docType.&"
          }
        }
      }
    }
  },
  {
    "operation": "shift",
    "spec": {
      "docType": {
        "1": {
          // Do docType 1 stuff
          "input": "out"
        },
        "2": {
          // Do docType 2 stuff
          "input": "out"
        }
      }
    }
  }
]

[Kannan998]

Thanks a lot.