Yura Atamanchuk created BEAM-8785:
-------------------------------------
Summary: Default value for enum runtime option doesn't work
Key: BEAM-8785
URL: https://issues.apache.org/jira/browse/BEAM-8785
Project: Beam
Issue Type: Bug
Components: sdk-java-core
Affects Versions: 2.15.0
Reporter: Yura Atamanchuk
Combination of ValueProvider, enums, @Default and missing option throws
exception.
It can be reproduced with:
```
public enum E \{ A }
public interface Options extends PipelineOptions {
@Default.Enum("A")
ValueProvider<E> getE();
void setE(ValueProvider<E> e);
}
public static void main(String[] args) {
Options options =
PipelineOptionsFactory.fromArgs("").withValidation().as(Options.class);
options.getE().get();
}
```
Which fails with exception:
```
Exception in thread "main" java.lang.IllegalArgumentException:
org.apache.beam.sdk.options.ValueProvider is not an enum typeException in
thread "main" java.lang.IllegalArgumentException:
org.apache.beam.sdk.options.ValueProvider is not an enum type at
java.lang.Class.enumConstantDirectory(Class.java:3344) at
java.lang.Enum.valueOf(Enum.java:232) at
org.apache.beam.sdk.options.ProxyInvocationHandler.returnDefaultHelper(ProxyInvocationHandler.java:587)
at
org.apache.beam.sdk.options.ProxyInvocationHandler.getDefault(ProxyInvocationHandler.java:533)
at
org.apache.beam.sdk.options.ProxyInvocationHandler.invoke(ProxyInvocationHandler.java:158)
```
It seems like to get enum class of a value getter return type is directly
casted into Class<Enum>, though in this case it is Class<ValueProvider<Enum>>.
Probably it can be fixed - method return generic type is accessible via
reflection
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
