Luke Cwik created BEAM-2445:
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Summary: DSL SQL to use service locator pattern to automatically
register UDFs
Key: BEAM-2445
URL: https://issues.apache.org/jira/browse/BEAM-2445
Project: Beam
Issue Type: Improvement
Components: dsl-sql
Reporter: Luke Cwik
Assignee: Xu Mingmin
Priority: Minor
Use a service locator pattern to find UDFs that can be registered. The service
loader can be used to register UDFs for standard functions via DSL SQL,
additional UDFs registered by third party libraries, and end user created UDFs.
Example ServiceLoader usage within Apache Beam to find coder providers:
https://github.com/apache/beam/blob/7126fdc6ee5671e99a2dede3f25ba616aa0e8fa4/sdks/java/core/src/main/java/org/apache/beam/sdk/coders/CoderRegistry.java#L147
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