Updating the logic of fetching the graphQL Operation for SP

[severussundar]

Why make this change?

• Closes CLI - Update command resulting in loss of fields within graphql properties #1181
• The type of GraphQL is different before and after starting the engine.
• Issue:

1. Setup a stored procedure entity using add command
   dab add sptest --source "sptest" --source.type "stored-procedure" --permissions "anonymous:execute" --rest.methods "get,post" --graphql.operation "query"

Config after running this command:

 "rest": {
        "methods": [
          "get",
          "post"
        ]
      },
      "graphql": {
        "operation": "Query"
      }

2. Update REST properties using update command
   dab update sptest --rest false

      "rest": false,

The graphql elements are lost. The correct config should've been as shown below

Expected config:

  "rest": false,
      "graphql": {
        "operation": "Query"
      }

• When trying to fetch the operations configured for stored procedure, it was coming out as null since the type of GraphQL object was not resolved correctly. Due to this, during the execution of CLI update command, the operations property inside graphql was becoming null while it should've been what was configured earlier using add command.

What is this change?

• Introduces a new method FetchGraphQLOperation which can be utilized when the type of the GraphQL is JsonElement. At the moment, CLI makes use of this.
• Renamed existing method to fetch the graphQLOperation as FetchConfiguredGraphQLOperation. This is utilized when the GraphQL is completely deserialized to a concrete object. Currently, utilized by engine components such as QueryBuilder, MutationBuilder etc.
• Includes a check for JsonValueKind.Arrary type for Rest. This is possible when --rest.methods is configured but nothing is specified for rest option.
• Added more tests that check for the exact JSON generated for add/update commands.

How was this tested?

• Existing Integration Tests
• Unit Tests
• Manually

Manual Testing

Config after running
dab add sptest --source "sptest" --source.type "stored-procedure" --permissions "anonymous:execute" --rest.methods "get,post" --graphql.operation "query"

Config after running
dab update sptest --rest false

[Aniruddh25]

The type of GraphQL is different before and after starting the engine.

Sorry, I am not clear with what the issue here is that requires this fix.

[severussundar]

The type of GraphQL is different before and after starting the engine.

Sorry, I am not clear with what the issue here is that requires this fix.

I've updated the PR description and linked an issue outlining the problem

[ayush3797]

Some questions/suggestions. LGTM otherwise.