gabrywu opened a new issue, #27465:
URL: https://github.com/apache/beam/issues/27465
### What would you like to happen?
I want to create a new UDF which supports a lambda parameter, for example
```java
static class LambdaUDFA implements BeamSqlUdf {
public static List<Row> eval(@Parameter(name = "rows") List<Row>
rows,
@Parameter(name = "filter")
Predicate1<Row> filter) {
return
rows.stream().filter(filter::apply).collect(Collectors.toList());
}
}
```
But beam SQL throws an exception like this
`sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl cannot be cast
to java.lang.Class`
### Issue Priority
Priority: 2 (default / most feature requests should be filed as P2)
### Issue Components
- [ ] Component: Python SDK
- [X] Component: Java SDK
- [ ] Component: Go SDK
- [ ] Component: Typescript SDK
- [ ] Component: IO connector
- [ ] Component: Beam examples
- [ ] Component: Beam playground
- [ ] Component: Beam katas
- [ ] Component: Website
- [ ] Component: Spark Runner
- [ ] Component: Flink Runner
- [ ] Component: Samza Runner
- [ ] Component: Twister2 Runner
- [ ] Component: Hazelcast Jet Runner
- [ ] Component: Google Cloud Dataflow Runner
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