Anton Kedin created BEAM-5921:
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Summary: [SQL] Support Joda types for UDF arguments
Key: BEAM-5921
URL: https://issues.apache.org/jira/browse/BEAM-5921
Project: Beam
Issue Type: Bug
Components: dsl-sql
Reporter: Anton Kedin
We call ScalarFunctionImpl.create() to register a UDF with Calcite schema in
BeamSqlEnv. Internally it uses Calcite's internal mapping
(JavaToSqlTypeConversionRules) to map Java types to SQL types to create a
function signature that gets registered in the schema. Problem is that this
logic is not extensible and doesn't include Joda types support (maybe others as
well).
We can work around this by constructing our own subclass of Function that gets
registered in the schema instead of calling ScalarFunctionImpl.create(). This
logic can use our own custom mapping (or fall back to Calcite implementation if
needed).
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