Add flow type to the execution response

[ThaminduR]

Issue

wso2/product-is#25509

This pull request introduces support for handling and exposing the flow type in the flow execution API. The main changes include adding the flowType property to the flow execution response model, ensuring it is included in API responses and error DTOs, and updating related utility methods and OpenAPI documentation.

Flow Execution Response Model Updates

• Added the flowType property to the FlowExecutionResponse class, including its getter/setter, builder method, and validation annotations. Updated equals, hashCode, and toString methods to account for flowType. [1] [2] [3] [4]
• Updated the flow execution service logic to set the flowType property in the response object.

Error Handling Enhancements

• Introduced a new FlowExecutionErrorDTO class extending ErrorDTO, with a flowType property for error responses.
• Updated utility methods in Utils.java to include flowType when constructing error DTOs and API error responses, and propagated flowType from exceptions. [1] [2] [3] [4] [5]

API Documentation

• Modified the OpenAPI YAML (flow-execution.yaml) to require flowType in the flow execution response schema and documented its purpose.

[Copilot]

Pull Request Overview

This PR adds flow type support to the flow execution API by introducing the flowType property to both success and error responses, enabling better identification and categorization of different flow types.

Key changes:

• Added flowType property to FlowExecutionResponse model with validation annotations
• Created new FlowExecutionErrorDTO class extending ErrorDTO to include flow type in error responses
• Updated utility methods to propagate flow type from exceptions to error responses

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
flow-execution.yaml	Added flowType as required property in OpenAPI schema with description and example
Utils.java	Updated error handling methods to accept and propagate flowType parameter
FlowExecutionErrorDTO.java	New error DTO class extending ErrorDTO with flowType property
FlowExecutionServiceCore.java	Set flowType in response object during flow execution
FlowExecutionResponse.java	Added flowType property with validation, updated equals/hashCode/toString methods

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