com.dautelle.math.functions
Class DiscreteFunction

java.lang.Object
  com.dautelle.realtime.RealtimeObject
      com.dautelle.math.functions.Function
          com.dautelle.math.functions.DiscreteFunction

All Implemented Interfaces:

Operable, Realtime, java.io.Serializable

public final class DiscreteFunction

extends Function

This class represents a function being actually defined from a mapping between two sets.

Version:

6.0, March 24, 2004

Author:

Jean-Marie Dautelle

See Also:

Serialized Form

Nested Class Summary

Nested classes inherited from class com.dautelle.math.functions.Function

Function.Variable

Nested classes inherited from class com.dautelle.realtime.RealtimeObject

RealtimeObject.Factory

Method Summary

Operable	evaluate() Evaluates this function by replacing its variables by their current (context-local) values.
java.lang.Object	export() Exports this object out of the current pool context.
java.util.Map	getMapping() Returns the mapping of this discrete function.
java.util.Set	getVariables() Returns a set containing this function variables.
java.lang.Object	toHeap() Moves this object to the heap.
static DiscreteFunction	valueOf(java.util.Map mapping, Function.Variable variable) Returns the DiscreteFunction defined from the specified mapping between two sets.

Methods inherited from class com.dautelle.math.functions.Function

appendTo, compose, differentiate, integrate, opposite, plus, pow, reciprocal, times, toString

Methods inherited from class com.dautelle.realtime.RealtimeObject

clone, isLocalObject, isPoolObject, recycle

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

valueOf

public static DiscreteFunction valueOf(java.util.Map mapping,
                                       Function.Variable variable)

Returns the DiscreteFunction defined from the specified mapping between two sets.

Parameters:

mapping - the index-value mapping of this function.

variable - this function variable.

Returns:

the corresponding function.

getMapping

public java.util.Map getMapping()

Returns the mapping of this discrete function.

Returns:

the map object as specified during construction.

See Also:

valueOf(java.util.Map, com.dautelle.math.functions.Function.Variable)

evaluate

public Operable evaluate()

Description copied from class: Function

Evaluates this function by replacing its variables by their current (context-local) values.

Specified by:

evaluate in class Function

Returns:

the evaluation of this function.

getVariables

public java.util.Set getVariables()

Description copied from class: Function

Returns a set containing this function variables.

Specified by:

getVariables in class Function

Returns:

the variables for this function.

export

public java.lang.Object export()

Description copied from interface: Realtime

Exports this object out of the current pool context. Realtime members are exported as well (recursion). This method affects only objects belonging to the current pool context. To avoid pool depletion, a "free" object from the outer pool is moved to replace the object being exported.

Specified by:

export in interface Realtime

Overrides:

export in class RealtimeObject

toHeap

public java.lang.Object toHeap()

Description copied from interface: Realtime

Moves this object to the heap. Realtime members are moved to the heap as well (recursion). This method affects only objects belonging to a pool context (current or not).

Specified by:

toHeap in interface Realtime

Overrides:

toHeap in class RealtimeObject