tree 48dc4b6d8f5a2c6a818fc7479dd8de14ce5468eb
parent 1438503310ff95d2f83d1d20b0783ca7661f771f
author James Starr <jamesstarr@gmail.com> 1628273219 -0700
committer Jesus Camacho Rodriguez <jesusca@microsoft.com> 1632436298 -0700

[CALCITE-4544] Deprecate Metadata API backed by Java Reflection (James Starr)

Deprecating:
* RelOptPlanner.registerMetadataProviders - Used to support custom nodes
  in reflection based rel metadata.  The generated code based rel
  metadata has tight couple so this is not needed.
* RelOptPlanner.getRelMetadataTimestamp - Used for cache invalidation in
  reflection based rel metadata.  The generated code based rel
  metadata has tight couple so this is not needed.
* RelOptCluster.metadataFactory - Exposing an api for reflection based
  rel metadata.
* RelNode.metadata - An api for accessing reflection based rel metadata.
* CachingRelMetadataProvider - Implements caching for reflection based
  rel metadata.  Generated code base rel metadata use a Table in
  RelMetadataQuery and tight coupling for caching.
* RelMetadataProvider.apply - The primary entry point reflection based
  rel metadata.
* MetadataFactory - An api for reflection based rel metadata.
* MockRelOptPlanner.setRelMetadataTimestamp - Used in testing reflection
  based rel metadata.
* ReflectiveRelMetadataProvider.{map, metadataClass0 - Used in the
  implementation reflection based rel metadata.
* VolcanoRelMetadataProvider - Supports custom volcanno rels in
  reflection based rel metadata.
* HepRelMetadataProvider - Supports custom hep rels in reflection based
  rel metadata.

Close apache/calcite#2475