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Adam Murdoch
committed
on 10 Oct 18
Finalize the value of any task `@Input` property whose getter returns a property instance, at the start of execution of the task.
This means… Show more
Finalize the value of any task `@Input` property whose getter returns a property instance, at the start of execution of the task.

This means that the property value will not change once the task has started execution, so that the same value is always used during fingerprinting, cache key calculation, validation, when queried by a task action, and so on.

This behaviour only applies to `@Input` properties in this commit. This was just a place to start. Other properties will be added in later commits.

Changes to the property are ignored once the value is finalized implicitly in this way and generate a deprecation warning instead of failing, as would happen after `finalizeValue()` is called. This allows a migration path for task types that can add a new property to represent some input and  keep their existing lenient (but now deprecated) behaviour for an existing property backed by the new property. It might prove better to flip this around, let's see.

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