PipelineInference creates invalid JSON

[justinormont]

Currently, PipelineInference creates an EntryPoint JSON graph beginning with:

{'Nodes' : [{
  "Name": "TextAnalytics.TextTransform",
  "Inputs": {
    "Column": {
      "Name": "text_tf",
      "Source": [
        "text"
      ]
    },
    
}}]}

The initial 'Nodes' should have double-quotes like "Nodes". JSON spec requires double quotes on keys.

As is, this fails a JSON.parse(), which makes the created JSON difficult to work with in NodeJS.

Source of the issue:

machinelearning/src/Microsoft.ML.PipelineInference/PipelinePattern.cs

Line 276 in 9d19d0e

return new PipelineResultRow($"{{'Nodes' : [{graphDef.Graph.ToJsonString()}]}}",

[jwood803]

@justinormont I added PR #516. I'm going to see about adding a test for this, but if there's anything else I need to add to it, just let me know.

[justinormont]

Closed by #516