eejbyfeldt opened a new pull request, #37837:
URL: https://github.com/apache/spark/pull/37837
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### What changes were proposed in this pull request?
Fixes encoding of classes that uses companion object constructors in the
interpreted path. Without this change the that is added in this change would
fail with
```
...
Cause: java.lang.RuntimeException: Error while decoding:
java.lang.RuntimeException: Couldn't find a valid constructor on interface
org.apache.spark.sql.catalyst.ScroogeLikeExample
newInstance(interface org.apache.spark.sql.catalyst.ScroogeLikeExample)
at
org.apache.spark.sql.errors.QueryExecutionErrors$.expressionDecodingError(QueryExecutionErrors.scala:1199)
...
```
As far as I can tell this bug has existed since the initial implementation
in SPARK-8288 https://github.com/apache/spark/pull/23062
The existing spec that tested this part of the code incorrectly provided an
outerPointer which hid the bug from that test.
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### Why are the changes needed?
Fixes a bug, the new spec in the ExpressionsEncoderSuite shows that this is
in fact a bug.
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### Does this PR introduce _any_ user-facing change?
Yes, it fixes a bug.
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### How was this patch tested?
New and existing specs in ExpressionEncoderSuite and ObjectExpressionsSuite.
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