org.jgap.gp.terminal

Class True

java.lang.Object

org.jgap.gp.CommandGene

org.jgap.gp.MathCommand

org.jgap.gp.terminal.True

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.lang.Comparable, IMutateable, ICloneable

public class True
extends MathCommand
implements IMutateable, ICloneable

The boolean value true.

Since:

3.0

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.jgap.gp.CommandGene

CommandGene.COMMAND_TYPE

Field Summary

Fields inherited from class org.jgap.gp.CommandGene

BooleanClass, CharacterClass, DELTA, DoubleClass, FloatClass, IntegerClass, LongClass, nodeIndex, VoidClass

Constructor Summary

Constructors

Constructor and Description
True(GPConfiguration a_conf)
True(GPConfiguration a_conf, java.lang.Class a_returnType)

Method Summary

Modifier and Type	Method and Description
CommandGene	applyMutation(int index, double a_percentage) Mutates a CommandGene.
java.lang.Object	clone() Clones the object.
boolean	execute_boolean(ProgramChromosome c, int n, java.lang.Object[] args) Executes this node as a boolean.
java.lang.Class	getChildType(IGPProgram a_ind, int a_index) Gets the type of node allowed from the given child number.
java.lang.String	getName()
java.lang.String	toString()

Methods inherited from class org.jgap.gp.CommandGene

cleanup, compareTo, dynamizeArity, ensureUniqueness, ensureUniqueness, ensureUniqueness2, equals, execute_double, execute_float, execute_int, execute_long, execute_object, execute_void, execute, getAllele, getApplicationData, getArity, getEnergy, getGPConfiguration, getPersistentRepresentation, getReturnType, getSubChildType, getSubChildTypes, getSubReturnType, hashCode, isAffectGlobalState, isCompareApplicationData, isFloatType, isIntegerType, isValid, isValid, setAllele, setApplicationData, setCompareApplicationData, setEnergy, setNoValidation, setReturnType, setToRandomValue, setValueFromPersistentRepresentation, size

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

True

public True(GPConfiguration a_conf)
     throws InvalidConfigurationException

Throws:

InvalidConfigurationException

True

public True(GPConfiguration a_conf,
            java.lang.Class a_returnType)
     throws InvalidConfigurationException

Throws:

InvalidConfigurationException

Method Detail

applyMutation

public CommandGene applyMutation(int index,
                                 double a_percentage)
                          throws InvalidConfigurationException

Description copied from interface: IMutateable

Mutates a CommandGene.

Specified by:

applyMutation in interface IMutateable

Parameters:

index - references the part of a multipart object, normally not relevant

a_percentage - the mutation rate (0.0 to 1.0)

Returns:

the mutant

Throws:

InvalidConfigurationException

clone

public java.lang.Object clone()

Clones the object. Simple and straight forward implementation here.

Specified by:

clone in interface ICloneable

Overrides:

clone in class java.lang.Object

Returns:

cloned instance of this object

Since:

3.4

toString

public java.lang.String toString()

Specified by:

toString in class CommandGene

Returns:

the string representation of the command. Especially usefull to output a resulting formula in human-readable form.

getName

public java.lang.String getName()

Overrides:

getName in class CommandGene

Returns:

textual name of this command

Since:

3.2

execute_boolean

public boolean execute_boolean(ProgramChromosome c,
                               int n,
                               java.lang.Object[] args)

Description copied from class: CommandGene

Executes this node as a boolean. Override to implement.

Overrides:

execute_boolean in class CommandGene

Parameters:

c - ignored here

n - ignored here

args - ignored here

Returns:

nothing but exception

getChildType

public java.lang.Class getChildType(IGPProgram a_ind,
                                    int a_index)

Description copied from class: CommandGene

Gets the type of node allowed from the given child number. Should be overridden in subclasses.

Overrides:

getChildType in class CommandGene

Parameters:

a_ind - the individual the child belongs to

a_index - the chromosome number

Returns:

the type of node allowed for that child, or null of no child exists