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Posted to issues@beam.apache.org by "Kyle Weaver (Jira)" <ji...@apache.org> on 2021/05/07 03:15:00 UTC
[jira] [Assigned] (BEAM-12106) Support ARRAY type in
BeamJavaUdfCalcRule.
[ https://issues.apache.org/jira/browse/BEAM-12106?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Kyle Weaver reassigned BEAM-12106:
----------------------------------
Assignee: Kyle Weaver
> Support ARRAY type in BeamJavaUdfCalcRule.
> ------------------------------------------
>
> Key: BEAM-12106
> URL: https://issues.apache.org/jira/browse/BEAM-12106
> Project: Beam
> Issue Type: New Feature
> Components: dsl-sql-zetasql
> Reporter: Kyle Weaver
> Assignee: Kyle Weaver
> Priority: P2
> Labels: zetasql-java-udf
>
> There are at least a couple reasons why this doesn't work yet:
> # Type inference. Returning a List seems to work okay because we preserve the return element type [1], but taking a List as an input doesn't work because we lose the parameters' element type(s) [2].
> # The current matching logic rejects the Calcite ARRAY operator. We can probably make it less strict. [3]
> [1] [https://github.com/apache/beam/blob/ffb00911b5d5579544fc4c699f186dd3e1cd2b83/sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/impl/ScalarFunctionImpl.java#L129]
> [2] [https://github.com/apache/beam/blob/0c01636fc8610414859d946cb93eabc904123fc8/sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/impl/UdfImplReflectiveFunctionBase.java#L61]
> [3] https://github.com/apache/beam/blob/315386cdfec6803b95f0b881d699e674f63d48ad/sdks/java/extensions/sql/zetasql/src/main/java/org/apache/beam/sdk/extensions/sql/zetasql/BeamJavaUdfCalcRule.java#L88-L89
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