pavibhai opened a new pull request #647:
URL: https://github.com/apache/orc/pull/647
* Change the filter from Consumer<VectorizedRowBatch> to
Consumer<OrcFilterContext>
* OrcFilterContext has findVector method that allows cached determination of
ColumnVectors from name
* OrcFilterContext offers utility methods for null determination on the
vector branch
* Refactors ParserUtils to introduce TypeWalker and VectorWalker to
centralize the walk logic
* Tests have been modified to support the new interface
### What changes were proposed in this pull request?
* Change the filter from Consumer<VectorizedRowBatch> to
Consumer<OrcFilterContext>
* Add the following convenience methods
* OrcFilterContext has findVector method that allows cached determination
of ColumnVectors from name
* OrcFilterContext offers utility methods for null determination on the
vector branch
* Refactors ParserUtils to introduce TypeWalker and VectorWalker to
centralize the walk logic
### Why are the changes needed?
The changes are needed to allow easy access to ColumnVectors by name as part
of [ORC-744]
### How was this patch tested?
Unit tests were added to the project.
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