tree 3abb5e777da598265327b8af5ac02b8d48c99441
parent 18503a642950cf109c52f6026730571aa41aeb2f
author Saavan Nanavati <66381097+saavannanavati@users.noreply.github.com> 1596732333 -0500
committer GitHub <noreply@github.com> 1596732333 -0700
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[BEAM-10258] Support type hint annotations on PTransform's expand() (#12009)

* [BEAM-10258] Support type hint annotations on PTransform's expand()

* Fixup: apply YAPF

* Moving PCollectionTypeConstraint to typehints.py

* Uses Generic[T] instead of PCollectionTypeConstraint

* Fixup: apply YAPF

* Remove unused imports

* Force user to wrap typehints in PCollections

* Add unit tests for various usages of typehints on PTransforms

* Add tests that use typehints on real pipelines

* Fixup: apply YAPF

* Fix bad merge

* Support PDone, PBegin, and better handling of error cases

* Fix test syntax

* Refactors strip_pcoll_input() and strip_pcoll_output() to a shared function

* Add unit tests

* Add more tests

* Add website documentation

* Fix linting issues

* Fix linting issue by using multi-line function annotations

* Fix more lint errors

* Fix import order, and other changes for PR

* Fix ungrouped-imports error

* Alphabetically order the imports

* Fixup: apply YAPF

* Fixes a bug where a type can have an empty __args__ attribute

* Fix bug in website snippet code

* Fixup: apply YAPF

* Fixup: apply YAPF

* Fix NoneType error

* Fix NoneType error part 2

* Use classes instead of strings during typecheck, and add tests

* Resolve circular import error and fix readability issues

* Fix lint errors

* Add back accidentally removed test

* Support None as an output annotation

* Show incorrect type in error message

Co-authored-by: Udi Meiri <udim@users.noreply.github.com>

* Allow Pipeline as an input

* Fix import bug

* Alphabetically order imports inside function (but really this is just to force re-run the tests)

* Display warning instead of throwing error for oddly formed type hints

* Convert to Beam types

* Add test for generic TypeVars

* Fix bug by skipping DoOutputsTuple

* Fix typo

* Add test for DoOutputsTuple

* Fix lint errors

Co-authored-by: Udi Meiri <udim@users.noreply.github.com>