Uses of Package
org.apache.calcite.rel.metadata

Packages that use org.apache.calcite.rel.metadata

Package	Description
org.apache.calcite.adapter.elasticsearch	Base classes for a query provider based on an Elasticsearch DB.
org.apache.calcite.adapter.enumerable	Query optimizer rules for Java calling convention.
org.apache.calcite.adapter.jdbc	Query provider based on a JDBC data source.
org.apache.calcite.interpreter	Provides an implementation of relational expressions using an interpreter.
org.apache.calcite.plan	Defines interfaces for constructing rule-based optimizers of relational expressions.
org.apache.calcite.plan.hep	Provides a heuristic planner implementation for the interfaces in org.apache.calcite.plan.
org.apache.calcite.plan.volcano	Optimizes relational expressions.
org.apache.calcite.rel	Defines relational expressions.
org.apache.calcite.rel.convert	Defines relational expressions and rules for converting between calling conventions.
org.apache.calcite.rel.core	Defines core relational expressions.
org.apache.calcite.rel.logical	Defines logical relational expressions.
org.apache.calcite.rel.metadata	Defines metadata interfaces and utilities for relational expressions.
org.apache.calcite.rel.mutable	Defines mutable relational expressions.
org.apache.calcite.rel.rules	Provides a core set of planner rules.
org.apache.calcite.schema.impl	Utilities to help implement Calcite's SPIs.
org.apache.calcite.sql.type	SQL type system.
org.apache.calcite.sql2rel	Translates a SQL parse tree to relational expression.
org.apache.calcite.tools	Provides utility classes.

Classes in org.apache.calcite.rel.metadata used by org.apache.calcite.adapter.elasticsearch

Class and Description
RelMetadataQuery RelMetadataQuery provides a strongly-typed facade on top of RelMetadataProvider for the set of relational expression metadata queries defined as standard within Calcite.

Classes in org.apache.calcite.rel.metadata used by org.apache.calcite.adapter.enumerable

Class and Description
RelColumnMapping Mapping from an input column of a RelNode to one of its output columns.
RelMetadataQuery RelMetadataQuery provides a strongly-typed facade on top of RelMetadataProvider for the set of relational expression metadata queries defined as standard within Calcite.

Classes in org.apache.calcite.rel.metadata used by org.apache.calcite.adapter.jdbc

Class and Description
RelMetadataQuery RelMetadataQuery provides a strongly-typed facade on top of RelMetadataProvider for the set of relational expression metadata queries defined as standard within Calcite.

Classes in org.apache.calcite.rel.metadata used by org.apache.calcite.interpreter

Class and Description
RelMetadataQuery RelMetadataQuery provides a strongly-typed facade on top of RelMetadataProvider for the set of relational expression metadata queries defined as standard within Calcite.

Classes in org.apache.calcite.rel.metadata used by org.apache.calcite.plan

Class and Description
MetadataFactory Source of metadata about relational expressions.
RelMetadataProvider RelMetadataProvider defines an interface for obtaining metadata about relational expressions.
RelMetadataQuery RelMetadataQuery provides a strongly-typed facade on top of RelMetadataProvider for the set of relational expression metadata queries defined as standard within Calcite.

Classes in org.apache.calcite.rel.metadata used by org.apache.calcite.plan.hep

Class and Description
Metadata Metadata about a relational expression.
MetadataDef Definition of metadata.
MetadataHandler Marker interface for a handler of metadata.
RelMetadataProvider RelMetadataProvider defines an interface for obtaining metadata about relational expressions.
RelMetadataQuery RelMetadataQuery provides a strongly-typed facade on top of RelMetadataProvider for the set of relational expression metadata queries defined as standard within Calcite.
UnboundMetadata Metadata that needs to be bound to a RelNode and RelMetadataQuery before it can be used.

Classes in org.apache.calcite.rel.metadata used by org.apache.calcite.plan.volcano

Class and Description
Metadata Metadata about a relational expression.
MetadataDef Definition of metadata.
MetadataHandler Marker interface for a handler of metadata.
RelMetadataProvider RelMetadataProvider defines an interface for obtaining metadata about relational expressions.
RelMetadataQuery RelMetadataQuery provides a strongly-typed facade on top of RelMetadataProvider for the set of relational expression metadata queries defined as standard within Calcite.
UnboundMetadata Metadata that needs to be bound to a RelNode and RelMetadataQuery before it can be used.

Classes in org.apache.calcite.rel.metadata used by org.apache.calcite.rel

Class and Description
Metadata Metadata about a relational expression.
RelMetadataQuery RelMetadataQuery provides a strongly-typed facade on top of RelMetadataProvider for the set of relational expression metadata queries defined as standard within Calcite.

Classes in org.apache.calcite.rel.metadata used by org.apache.calcite.rel.convert

Class and Description
RelMetadataQuery RelMetadataQuery provides a strongly-typed facade on top of RelMetadataProvider for the set of relational expression metadata queries defined as standard within Calcite.

Classes in org.apache.calcite.rel.metadata used by org.apache.calcite.rel.core

Class and Description
RelColumnMapping Mapping from an input column of a RelNode to one of its output columns.
RelMetadataQuery RelMetadataQuery provides a strongly-typed facade on top of RelMetadataProvider for the set of relational expression metadata queries defined as standard within Calcite.

Classes in org.apache.calcite.rel.metadata used by org.apache.calcite.rel.logical

Class and Description
RelColumnMapping Mapping from an input column of a RelNode to one of its output columns.
RelMetadataQuery RelMetadataQuery provides a strongly-typed facade on top of RelMetadataProvider for the set of relational expression metadata queries defined as standard within Calcite.

Classes in org.apache.calcite.rel.metadata used by org.apache.calcite.rel.metadata

Class and Description
BuiltInMetadata.AllPredicates Metadata about the predicates that hold in the rows emitted from a relational expression.
BuiltInMetadata.AllPredicates.Handler Handler API.
BuiltInMetadata.Collation Metadata about which columns are sorted.
BuiltInMetadata.Collation.Handler Handler API.
BuiltInMetadata.ColumnOrigin Metadata about the origins of columns.
BuiltInMetadata.ColumnOrigin.Handler Handler API.
BuiltInMetadata.ColumnUniqueness Metadata about whether a set of columns uniquely identifies a row.
BuiltInMetadata.ColumnUniqueness.Handler Handler API.
BuiltInMetadata.CumulativeCost Metadata about the cost of evaluating a relational expression, including all of its inputs.
BuiltInMetadata.CumulativeCost.Handler Handler API.
BuiltInMetadata.DistinctRowCount Metadata about the number of distinct rows returned by a set of columns in a relational expression.
BuiltInMetadata.DistinctRowCount.Handler Handler API.
BuiltInMetadata.Distribution Metadata about how a relational expression is distributed.
BuiltInMetadata.Distribution.Handler Handler API.
BuiltInMetadata.ExplainVisibility Metadata about whether a relational expression should appear in a plan.
BuiltInMetadata.ExplainVisibility.Handler Handler API.
BuiltInMetadata.ExpressionLineage Metadata about the origins of expressions.
BuiltInMetadata.ExpressionLineage.Handler Handler API.
BuiltInMetadata.MaxRowCount Metadata about the maximum number of rows returned by a relational expression.
BuiltInMetadata.MaxRowCount.Handler Handler API.
BuiltInMetadata.Memory Metadata about the memory use of an operator.
BuiltInMetadata.Memory.Handler Handler API.
BuiltInMetadata.MinRowCount Metadata about the minimum number of rows returned by a relational expression.
BuiltInMetadata.MinRowCount.Handler Handler API.
BuiltInMetadata.NodeTypes Metadata about the node types in a relational expression.
BuiltInMetadata.NodeTypes.Handler Handler API.
BuiltInMetadata.NonCumulativeCost Metadata about the cost of evaluating a relational expression, not including its inputs.
BuiltInMetadata.NonCumulativeCost.Handler Handler API.
BuiltInMetadata.Parallelism Metadata about the degree of parallelism of a relational expression, and how its operators are assigned to processes with independent resource pools.
BuiltInMetadata.Parallelism.Handler Handler API.
BuiltInMetadata.PercentageOriginalRows Metadata about the proportion of original rows that remain in a relational expression.
BuiltInMetadata.PercentageOriginalRows.Handler Handler API.
BuiltInMetadata.PopulationSize Metadata about the number of distinct values in the original source of a column or set of columns.
BuiltInMetadata.PopulationSize.Handler Handler API.
BuiltInMetadata.Predicates Metadata about the predicates that hold in the rows emitted from a relational expression.
BuiltInMetadata.Predicates.Handler Handler API.
BuiltInMetadata.RowCount Metadata about the number of rows returned by a relational expression.
BuiltInMetadata.RowCount.Handler Handler API.
BuiltInMetadata.Selectivity Metadata about the selectivity of a predicate.
BuiltInMetadata.Selectivity.Handler Handler API.
BuiltInMetadata.Size Metadata about the size of rows and columns.
BuiltInMetadata.Size.Handler Handler API.
BuiltInMetadata.TableReferences Metadata to obtain references to tables used by a given expression.
BuiltInMetadata.TableReferences.Handler Handler API.
BuiltInMetadata.UniqueKeys Metadata about which combinations of columns are unique identifiers.
BuiltInMetadata.UniqueKeys.Handler Handler API.
CachingRelMetadataProvider.CacheEntry An entry in the cache.
ChainedRelMetadataProvider Implementation of the RelMetadataProvider interface via the Glossary.CHAIN_OF_RESPONSIBILITY_PATTERN.
CyclicMetadataException Exception that indicates that a cycle has been detected while computing metadata.
DefaultRelMetadataProvider DefaultRelMetadataProvider supplies a default implementation of the RelMetadataProvider interface.
JaninoRelMetadataProvider Implementation of the RelMetadataProvider interface that generates a class that dispatches to the underlying providers.
JaninoRelMetadataProvider.Key Key for the cache.
Metadata Metadata about a relational expression.
MetadataDef Definition of metadata.
MetadataFactory Source of metadata about relational expressions.
MetadataHandler Marker interface for a handler of metadata.
NullSentinel Placeholder for null values.
ReflectiveRelMetadataProvider.Space Workspace for computing which methods can act as handlers for given metadata methods.
ReflectiveRelMetadataProvider.Space2 Extended work space.
RelColumnOrigin RelColumnOrigin is a data structure describing one of the origins of an output column produced by a relational expression.
RelMdPercentageOriginalRows RelMdPercentageOriginalRows supplies a default implementation of RelMetadataQuery.getPercentageOriginalRows(org.apache.calcite.rel.RelNode) for the standard logical algebra.
RelMetadataProvider RelMetadataProvider defines an interface for obtaining metadata about relational expressions.
RelMetadataQuery RelMetadataQuery provides a strongly-typed facade on top of RelMetadataProvider for the set of relational expression metadata queries defined as standard within Calcite.
UnboundMetadata Metadata that needs to be bound to a RelNode and RelMetadataQuery before it can be used.

Classes in org.apache.calcite.rel.metadata used by org.apache.calcite.rel.mutable

Class and Description
RelColumnMapping Mapping from an input column of a RelNode to one of its output columns.

Classes in org.apache.calcite.rel.metadata used by org.apache.calcite.rel.rules

Class and Description
RelMetadataQuery RelMetadataQuery provides a strongly-typed facade on top of RelMetadataProvider for the set of relational expression metadata queries defined as standard within Calcite.

Classes in org.apache.calcite.rel.metadata used by org.apache.calcite.schema.impl

Class and Description
RelMetadataQuery RelMetadataQuery provides a strongly-typed facade on top of RelMetadataProvider for the set of relational expression metadata queries defined as standard within Calcite.

Classes in org.apache.calcite.rel.metadata used by org.apache.calcite.sql.type

Class and Description
RelColumnMapping Mapping from an input column of a RelNode to one of its output columns.

Classes in org.apache.calcite.rel.metadata used by org.apache.calcite.sql2rel

Class and Description
RelColumnMapping Mapping from an input column of a RelNode to one of its output columns.

Classes in org.apache.calcite.rel.metadata used by org.apache.calcite.tools

Class and Description
RelMetadataProvider RelMetadataProvider defines an interface for obtaining metadata about relational expressions.