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

Class FlinkMetadata

java.lang.Object

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

public abstract class FlinkMetadata
extends Object

Contains the interfaces for several specified metadata of flink.

Nested Class Summary

Nested Classes

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

Constructor Summary

Constructors

Constructor and Description
FlinkMetadata()

Method Summary

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FlinkMetadata

public FlinkMetadata()