James Taylor created PHOENIX-1826:
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Summary: Implement TrackOrderPreservingExpressionCompiler as
Expression visitor instead of ParseNode visitor
Key: PHOENIX-1826
URL: https://issues.apache.org/jira/browse/PHOENIX-1826
Project: Phoenix
Issue Type: Task
Reporter: James Taylor
We currently traverse the ORDER BY ParseNodes in
TrackOrderPreservingExpressionCompiler to determine if the rows will be ordered
in row key order. This complicates supporting ORDER BY expressions that are an
ordinal position (PHOENIX-1749), since it's a fair bit of code to manufacture a
ParseNode when wildcards are used in the select. We should consider writing
this visitor as an Expression instead and then using ordinal position would be
easy as we could index into the RowProjector to get an Expression.
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