org.eigenbase.util.mapping
Interface Mappings.FunctionMapping

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.FunctionMapping

Mapping where every source has a target. But:

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

Method Summary

MappingType	getMappingType()
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.

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:

IndexOutOfBoundsException - if source is not mapped

getMappingType

MappingType getMappingType()

getSourceCount

int getSourceCount()