Discussion about disallowing usage of object/array param/result as a whole in format: results.result1 or params.param1 (without star reference)

[ywluogg]

Feature request

In TEP 75 and in the implementation tracker (#5056) we stated that we don't want to support referring objects/array params/results as a whole in format results.result1 or params.param1

Use case

As stated above

[ywluogg]

Offline discussion leads to conclusion that we want to be consistent for referring object and array params and results using [*] for consistency and syntax clearity. That said, currently array params are allowed to be referred using format params.param1, so we need to deprecate this reference format. After deprecation, array and object params and results can only be referenced using [*]. Examples:
results.array-result[*]
params.array-param[*]
results.object-result[*]
params.object-param[*]

[ywluogg]

Per https://github.com/tektoncd/pipeline/blob/main/api_compatibility_policy.md, we need to add a warning for reference format: params.array-param

[ywluogg]

After discussion, it seems better that we plan to deprecate the params.paramArray1 as a whole usage, but we don't enforce it in implementation. In doc, we will recommend the star reference to refer param arrays as a whole.

[tekton-robot]

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[tekton-robot]

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