Hi Taz, If you are relying on the RelMetadataQuery [1] API then you may need to set your provided into THREAD_PROVIDERS in a similar way that it is done in RelMetadataTest [2].
Best, Stamatis [1] https://github.com/apache/calcite/blob/7a462f2b2f78aa12068b691c1e423ea4c8a825e4/core/src/main/java/org/apache/calcite/rel/metadata/RelMetadataQuery.java#L75 [2] https://github.com/apache/calcite/blob/7a462f2b2f78aa12068b691c1e423ea4c8a825e4/core/src/test/java/org/apache/calcite/test/RelMetadataTest.java#L893 On Mon, Jul 20, 2020 at 6:15 PM Tal Glanzman <talglanz...@gmail.com> wrote: > hi, > > I am trying to figure out how to add custom logic for providing metadata to > nodes inside my adapter with no luck. > > I have an implementation of my own RelMetadataProvider, as described in the > docs. > > After looking around, i still couldn't find a way to use this provider in > the planning phase > - no property in the jdbc connection string > - tried to invoke setMetadataProvider(provider) on the cluster of the > initial nodes of the tree > > drilling a bit, i notice that the provider in use is > JaninoRelMetadataProvider with provider=DefaultRelMetadataProvider. > > Is there a way to do such a thing using the standard execution? > > any guidance will be much appreciated, thanks! >
