sofya.mutator.selectors
Class RandomOperatorMutationSelector

java.lang.Object
  sofya.mutator.selectors.RandomOperatorMutationSelector

All Implemented Interfaces:

MutationSelector

public class RandomOperatorMutationSelector
extends java.lang.Object
implements MutationSelector

Mutation selector that randomly selects by mutation operator.

Version:

05/12/2006

Author:

Alex Kinneer

Constructor Summary

RandomOperatorMutationSelector(java.util.List opChoices, int num)
Creates a new mutation selector to select a given number of mutation operators randomly; mutations corresponding to selected operators will be selected.

RandomOperatorMutationSelector(java.lang.String[] opChoices, int num)
Creates a new mutation selector to select a given number of mutation operators randomly; mutations corresponding to selected operators will be selected.

Method Summary

Mutation.Variant	getVariant(Mutation mutation) Gets the selected variant.
boolean	isSelected(Mutation mutation) Reports whether a mutation is selected.
void	setMutationCount(int count) Sets the total number of mutations that may be passed to this selector (typically the number of mutations in a mutation table).

Methods inherited from class java.lang.Object

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

Constructor Detail

RandomOperatorMutationSelector

public RandomOperatorMutationSelector(java.lang.String[] opChoices,
                                      int num)

Creates a new mutation selector to select a given number of mutation operators randomly; mutations corresponding to selected operators will be selected.

Parameters:

opChoices - Array of available mutation operators, as operator abbreviation strings (e.g. "AOC", "AOP", etc.).

num - Number of mutation operators to be randomly selected.

RandomOperatorMutationSelector

public RandomOperatorMutationSelector(java.util.List opChoices,
                                      int num)

Creates a new mutation selector to select a given number of mutation operators randomly; mutations corresponding to selected operators will be selected.

Parameters:

opChoices - List of selected mutation operators, as operator abbreviation strings (e.g. "AOC", "AOP", etc.). For best efficiency, the list should support random access.

num - Number of mutation operators to be randomly selected.

Method Detail

isSelected

public boolean isSelected(Mutation mutation)

Description copied from interface: MutationSelector

Reports whether a mutation is selected.

Specified by:

isSelected in interface MutationSelector

Parameters:

mutation - Mutation to be checked for selection.

Returns:

true if this selector implements a selection criteria that the given mutation meets, false otherwise.

getVariant

public Mutation.Variant getVariant(Mutation mutation)

Description copied from interface: MutationSelector

Gets the selected variant.

Some mutation operators, such as the arithmetic operator change (AOP), generate multiple variants at a single location.

Specified by:

getVariant in interface MutationSelector

Parameters:

mutation - Mutation for which to retrieve the selected variant.

Returns:

The selected mutation variant.

setMutationCount

public void setMutationCount(int count)

Description copied from interface: MutationSelector

Sets the total number of mutations that may be passed to this selector (typically the number of mutations in a mutation table).

This is useful for some selectors, such as those that implement random selection criteria.

Specified by:

setMutationCount in interface MutationSelector

Parameters:

count - Total number of mutations from which this selector may select.