Package org.apache.flink.table.planner.plan.metadata

Interface Summary

Interface	Description
FlinkMetadata.ColumnInterval	Metadata about the interval of given column from a specified relational expression.
FlinkMetadata.ColumnInterval.Handler	Handler API.
FlinkMetadata.ColumnNullCount	Metadata about the null count of given column from a specified relational expression.
FlinkMetadata.ColumnNullCount.Handler	Handler API.
FlinkMetadata.ColumnOriginNullCount	Origin null count, looking until source.
FlinkMetadata.ColumnOriginNullCount.Handler	Handler API.
FlinkMetadata.FilteredColumnInterval	Metadata about the interval of given column under the given filter argument from a specified relational expression.
FlinkMetadata.FilteredColumnInterval.Handler	Handler API.
FlinkMetadata.FlinkDistribution	Metadata about how a relational expression is distributed.
FlinkMetadata.FlinkDistribution.Handler	Handler API.
FlinkMetadata.ModifiedMonotonicity	Metadata about the modified property of a RelNode.
FlinkMetadata.ModifiedMonotonicity.Handler	Handler API.
FlinkMetadata.UniqueGroups	Metadata about the (minimum) unique groups of the given columns from a specified relational expression.
FlinkMetadata.UniqueGroups.Handler	Handler API.
FlinkMetadata.UpsertKeys	Metadata about which combinations of columns are upsert identifiers.
FlinkMetadata.UpsertKeys.Handler	Handler API.
FlinkMetadata.WindowProperties	Metadata about the window properties of a RelNode.
FlinkMetadata.WindowProperties.Handler	Handler API.

Class Summary

Class	Description
FlinkMetadata	Contains the interfaces for several specified metadata of flink.
FlinkRelMdCollation	FlinkRelMdCollation supplies a default implementation of RelMetadataQuery.collations(org.apache.calcite.rel.RelNode) for the standard logical algebra.
FlinkRelMetadataQuery	A RelMetadataQuery that defines extended metadata handler in Flink, e.g ColumnInterval, ColumnNullCount.