jacques-n opened a new pull request #2624:
URL: https://github.com/apache/calcite/pull/2624
This is a precursor to implementing CALCITE-4879. It tries to better
encapsulate
separate the consumption side of RelMetaDataQuery from the production side.
This
includes:
- Mark the public fields in RelMetadataQueryBase as INTERNAL fields
- Deprecate the static initialHandler method and replace it with a class
level createInitialHandler
- Deprecate the public constructor of RelMetadataQuery to avoid direct
extension
- Introduce a new HandlerBasedRelMetdataQuery that will house the handler
specific
concepts in a future release.
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