org.eigenbase.util.mapping
Interface Mappings.SourceMapping

All Known Subinterfaces:

Mapping

All Known Implementing Classes:

Mappings.AbstractMapping, Mappings.FiniteAbstractMapping, Mappings.IdentityMapping, Mappings.InverseMapping, Mappings.OverridingSourceMapping, Mappings.OverridingTargetMapping, Mappings.PartialFunctionImpl, Mappings.PartialMapping, Mappings.SurjectionWithInverse, Permutation

Enclosing class:

Mappings

public static interface Mappings.SourceMapping

Mapping suitable for sourcing columns.

Properties:

• It has a finite number of sources and targets
• Each target has exactly one source
• Each source has at most one target

TODO: figure out which interfaces this should extend

Method Summary

MappingType	getMappingType()
int	getSource(int target)
int	getSourceCount()
int	getSourceOpt(int target)
int	getTargetCount()
int	getTargetOpt(int source)
Mapping	inverse()
boolean	isIdentity()

Method Detail

getSourceCount

int getSourceCount()

getSource

int getSource(int target)

getSourceOpt

int getSourceOpt(int target)

getTargetCount

int getTargetCount()

getTargetOpt

int getTargetOpt(int source)

getMappingType

MappingType getMappingType()

isIdentity

boolean isIdentity()

inverse

Mapping inverse()