Uses of Interface
org.apache.calcite.rel.metadata.Metadata

Packages that use Metadata

Package	Description
org.apache.calcite.plan.volcano	Optimizes relational expressions.
org.apache.calcite.rel	Defines relational expressions.
org.apache.calcite.rel.metadata	Defines metadata interfaces and utilities for relational expressions.

Uses of Metadata in org.apache.calcite.plan.volcano

Methods in org.apache.calcite.plan.volcano that return types with arguments of type Metadata

Modifier and Type	Method and Description
com.google.common.base.Function<RelNode,Metadata>	VolcanoRelMetadataProvider.apply(Class<? extends RelNode> relClass, Class<? extends Metadata> metadataClass)

Method parameters in org.apache.calcite.plan.volcano with type arguments of type Metadata

Modifier and Type	Method and Description
com.google.common.base.Function<RelNode,Metadata>	VolcanoRelMetadataProvider.apply(Class<? extends RelNode> relClass, Class<? extends Metadata> metadataClass)

Uses of Metadata in org.apache.calcite.rel

Methods in org.apache.calcite.rel with type parameters of type Metadata

Modifier and Type	Method and Description
<M extends Metadata> M	AbstractRelNode.metadata(Class<M> metadataClass)
<M extends Metadata> M	RelNode.metadata(Class<M> metadataClass) Returns a metadata interface.

Uses of Metadata in org.apache.calcite.rel.metadata

Subinterfaces of Metadata in org.apache.calcite.rel.metadata

Modifier and Type	Interface and Description
static interface	BuiltInMetadata.Collation Metadata about which columns are sorted.
static interface	BuiltInMetadata.ColumnOrigin Metadata about the origins of columns.
static interface	BuiltInMetadata.ColumnUniqueness Metadata about whether a set of columns uniquely identifies a row.
static interface	BuiltInMetadata.CumulativeCost Metadata about the cost of evaluating a relational expression, including all of its inputs.
static interface	BuiltInMetadata.DistinctRowCount Metadata about the number of distinct rows returned by a set of columns in a relational expression.
static interface	BuiltInMetadata.Distribution Metadata about how a relational expression is distributed.
static interface	BuiltInMetadata.ExplainVisibility Metadata about whether a relational expression should appear in a plan.
static interface	BuiltInMetadata.Memory Metadata about the memory use of an operator.
static interface	BuiltInMetadata.NonCumulativeCost Metadata about the cost of evaluating a relational expression, not including its inputs.
static interface	BuiltInMetadata.Parallelism Metadata about the degree of parallelism of a relational expression, and how its operators are assigned to processes with independent resource pools.
static interface	BuiltInMetadata.PercentageOriginalRows Metadata about the proportion of original rows that remain in a relational expression.
static interface	BuiltInMetadata.PopulationSize Metadata about the number of distinct values in the original source of a column or set of columns.
static interface	BuiltInMetadata.Predicates Metadata about the predicates that hold in the rows emitted from a relational expression.
static interface	BuiltInMetadata.RowCount Metadata about the number of rows returned by a relational expression.
static interface	BuiltInMetadata.Selectivity Metadata about the selectivity of a predicate.
static interface	BuiltInMetadata.Size Metadata about the size of rows and columns.
static interface	BuiltInMetadata.UniqueKeys Metadata about which combinations of columns are unique identifiers.

Fields in org.apache.calcite.rel.metadata with type parameters of type Metadata

Modifier and Type	Field and Description
static com.google.common.base.Function<RelNode,Metadata>	MetadataFactoryImpl.DUMMY

Methods in org.apache.calcite.rel.metadata with type parameters of type Metadata

Modifier and Type	Method and Description
<T extends Metadata> T	MetadataFactory.query(RelNode rel, Class<T> clazz) Returns a metadata interface to get a particular kind of metadata from a particular relational expression.
<T extends Metadata> T	MetadataFactoryImpl.query(RelNode rel, Class<T> clazz)

Methods in org.apache.calcite.rel.metadata that return types with arguments of type Metadata

Modifier and Type	Method and Description
com.google.common.base.Function<RelNode,Metadata>	CachingRelMetadataProvider.apply(Class<? extends RelNode> relClass, Class<? extends Metadata> metadataClass)
com.google.common.base.Function<RelNode,Metadata>	ReflectiveRelMetadataProvider.apply(Class<? extends RelNode> relClass, Class<? extends Metadata> metadataClass)
com.google.common.base.Function<RelNode,Metadata>	ChainedRelMetadataProvider.apply(Class<? extends RelNode> relClass, Class<? extends Metadata> metadataClass)
com.google.common.base.Function<RelNode,Metadata>	RelMetadataProvider.apply(Class<? extends RelNode> relClass, Class<? extends Metadata> metadataClass) Retrieves metadata of a particular type and for a particular sub-class of relational expression.

Method parameters in org.apache.calcite.rel.metadata with type arguments of type Metadata

Modifier and Type	Method and Description
com.google.common.base.Function<RelNode,Metadata>	CachingRelMetadataProvider.apply(Class<? extends RelNode> relClass, Class<? extends Metadata> metadataClass)
com.google.common.base.Function<RelNode,Metadata>	ReflectiveRelMetadataProvider.apply(Class<? extends RelNode> relClass, Class<? extends Metadata> metadataClass)
com.google.common.base.Function<RelNode,Metadata>	ChainedRelMetadataProvider.apply(Class<? extends RelNode> relClass, Class<? extends Metadata> metadataClass)
com.google.common.base.Function<RelNode,Metadata>	RelMetadataProvider.apply(Class<? extends RelNode> relClass, Class<? extends Metadata> metadataClass) Retrieves metadata of a particular type and for a particular sub-class of relational expression.

Constructor parameters in org.apache.calcite.rel.metadata with type arguments of type Metadata

Constructor and Description
ReflectiveRelMetadataProvider(Map<Class<RelNode>,com.google.common.base.Function<RelNode,Metadata>> map, Class<?> metadataClass0) Creates a ReflectiveRelMetadataProvider.