org.apache.calcite.util.mapping

Interface Mappings.FunctionMapping

All Superinterfaces:

Iterable<IntPair>, Mappings.CoreMapping

All Known Subinterfaces:

Mapping, Mappings.TargetMapping

All Known Implementing Classes:

AbstractSourceMapping, AbstractTargetMapping, Mappings.AbstractMapping, Mappings.FiniteAbstractMapping, Mappings.IdentityMapping, Mappings.OverridingSourceMapping, Mappings.OverridingTargetMapping, Mappings.PartialMapping, Permutation

Enclosing class:

Mappings

public static interface Mappings.FunctionMapping
extends Mappings.CoreMapping

Mapping where every source has a target. But:

• A target may not have a source.
• May not be finite.

Method Summary

Methods

Modifier and Type	Method and Description
MappingType	getMappingType() Returns the mapping type.
int	getSourceCount()
int	getTarget(int source) Returns the target that a source maps to.
int	getTargetOpt(int source) Returns the target that a source maps to, or -1 if it is not mapped.

Methods inherited from interface org.apache.calcite.util.mapping.Mappings.CoreMapping

size

Methods inherited from interface java.lang.Iterable

iterator

Method Detail

getTargetOpt

int getTargetOpt(int source)

Returns the target that a source maps to, or -1 if it is not mapped.

getTarget

int getTarget(int source)

Returns the target that a source maps to.

Parameters:

source - source

Returns:

target

Throws:

Mappings.NoElementException - if source is not mapped

getMappingType

MappingType getMappingType()

Description copied from interface: Mappings.CoreMapping

Returns the mapping type.

Specified by:

getMappingType in interface Mappings.CoreMapping

Returns:

Mapping type

getSourceCount

int getSourceCount()