kennknowles commented on a change in pull request #14155:
URL: https://github.com/apache/beam/pull/14155#discussion_r596201351
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File path: sdks/java/core/src/main/java/org/apache/beam/sdk/transforms/DoFn.java
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@@ -91,6 +91,16 @@
*/
public abstract class DoFn<InputT extends @Nullable Object, OutputT extends
@Nullable Object>
implements Serializable, HasDisplayData {
+ /** Information accessible while within the {@link Setup} method. */
+ @SuppressWarnings("ClassCanBeStatic") // Converting class to static is an
API change.
+ public abstract class SetupContext {
Review comment:
I mean you would call `invokeSetup` with an `ArgumentProvider` that
provides the options (this already exists). Then the job of the invoker
(generated bytecode) is to pass the right arguments to the DoFn.
Basically: no more contexts passed to annotation-style `DoFn`s. In fact, we
should deprecate the existing ones. Instead, `ArgumentProvider` is basically
the same thing, but only passed to `DoFnInvoker` and the invoker passes just
the arguments needed to the `DoFn`.
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