Nadav Samet created SPARK-23511:
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Summary: Catalyst: Implement GetField
Key: SPARK-23511
URL: https://issues.apache.org/jira/browse/SPARK-23511
Project: Spark
Issue Type: New Feature
Components: SQL
Affects Versions: 2.2.1
Reporter: Nadav Samet
Similar to Invoke, InvokeStatic and NewInstance, it would be nice to have
GetStaticField(expression, fieldName).
My use case is invoking a method on a companion object given the class of the
companion object itself - it turns out they are not static. I'd like to be able
to do something like this:
Invoke(GetStaticField(cls, "MODULE$", ...), "someMethod", ...)
My workaround is passing the companion to Invoke() directly to
Literal.fromObject but I think having a general solution to call method on
companion objects would be better.
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