Summary

Resolves #1217

Here's a summary of the changes made:

Changes

Problem: Legacy evaluators had duplicated target_output_key resolution logic scattered across individual evaluators, and the pattern wasn't consistently applied.

Solution: Added a centralized get_targeted_field(self, obj) method to BaseLegacyEvaluator and refactored all three evaluators that use target output key resolution to call it.

Files changed (4 files, +20/-61 lines):

1. base_legacy_evaluator.py — Added get_targeted_field() method that resolves target_output_key via resolve_output_path, returning the original object on failure. Added the resolve_output_path import.

2. legacy_llm_as_judge_evaluator.py — Replaced 13 lines of inline resolution with 2 calls to self.get_targeted_field(). Removed unused resolve_output_path import.

3. legacy_exact_match_evaluator.py — Replaced 20 lines of inline resolution (with special coupled failure handling) with 2 calls to self.get_targeted_field(). Removed unused import.

4. legacy_json_similarity_evaluator.py — Replaced 12 lines of inline resolution with 2 calls to self.get_targeted_field(). Removed unused import.

All 148 existing tests pass and lint/format checks are clean.

Changes

 .../eval/evaluators/base_legacy_evaluator.py       | 14 +++++++++++
 .../evaluators/legacy_exact_match_evaluator.py     | 27 ++--------------------
 .../evaluators/legacy_json_similarity_evaluator.py | 20 ++--------------
 .../evaluators/legacy_llm_as_judge_evaluator.py    | 20 ++--------------
 4 files changed, 20 insertions(+), 61 deletions(-)

packages/uipath/src/uipath/eval/evaluators/base_legacy_evaluator.py
packages/uipath/src/uipath/eval/evaluators/legacy_exact_match_evaluator.py
packages/uipath/src/uipath/eval/evaluators/legacy_json_similarity_evaluator.py
packages/uipath/src/uipath/eval/evaluators/legacy_llm_as_judge_evaluator.py

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