apache / apache/beam

@DefaultCoder(MyCoder.class) should work if MyCoder has .of()

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core java new feature P3
Dominant language
Java
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Description

CC [~kenn]

Imported from Jira [BEAM-936](https://issues.apache.org/jira/browse/BEAM-936). Original Jira may contain additional context.
Reported by: dhalperi.

Contributor guide

Open the contributing guide

Research direction

Start by locating the Java implementation of @DefaultCoder and the existing tests for coder selection. Trace how a coder class is instantiated and determine the expected behavior for a MyCoder.of() factory, then add coverage showing that the annotation accepts it. The issue is an imported, unanswered report, so confirm the intended API before starting.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
data-engineering
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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