fix: Task.artifacts and Task.history null deserialization (fixes #257) #258
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Summary of Changes
Hello @Niravkumar-Patel, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!
This pull request addresses a deserialization issue in the Task class where artifacts and history fields could be null after JSON parsing, leading to potential NullPointerExceptions. The fix ensures these fields are always initialized to empty lists if not provided or explicitly null in the incoming data, thereby improving the robustness and type safety of the Task object.
Highlights
- Null Deserialization Fix: The Task class constructor now explicitly initializes artifacts and history fields to empty lists if they are null during deserialization, preventing NullPointerExceptions.
- Improved Type Safety: Ensures that optional array fields (artifacts and history) always maintain a non-null list type, aligning with A2A specification requirements for type safety.
- Comprehensive Unit Tests: New unit tests have been added to validate the deserialization behavior for Task objects, covering scenarios where artifacts and history fields are missing, explicitly null, or properly populated in the JSON input.
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Code Review
This pull request successfully addresses the null deserialization issue for Task.artifacts and Task.history by initializing them to empty lists when they are null. The addition of TaskDeserializationTest.java provides good test coverage for this fix, including cases with missing fields, explicit nulls, and populated arrays. My review includes a suggestion to further improve the immutability of the Task class by making defensive copies of the lists in the constructor, which would prevent potential side effects from mutable lists being passed in.
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…oject#257) - Initialize artifacts and history fields with empty lists when null - Update javadoc to clarify null-safety guarantees - Add comprehensive unit tests for deserialization scenarios - Ensures type safety for optional array fields per A2A specification Fixes a2aproject#257
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…roject#257) (a2aproject#258) # Description - Initialize artifacts and history fields with empty lists when null - Add comprehensive unit tests for deserialization scenarios - Ensures type safety for optional array fields per A2A specification Fixes a2aproject#257 Co-authored-by: nirav patel <nrv@Mac.attlocal.net>
Description
Fixes #257