Class AbstractELExpression

java.lang.Object
  |
  +--AbstractELExpression

All Implemented Interfaces:

java.lang.Cloneable, ELExpression

Direct Known Subclasses:

ELCall, ELMorphInterpolator, ELScalar, ELVector

public abstract class AbstractELExpression

extends java.lang.Object

implements ELExpression

Some common implementation code for ELExpressions.

Constructor Summary

AbstractELExpression()

Method Summary

abstract java.lang.Object	clone()
protected ELExpression	cloneSiblingMutation(ELCall parent, GeneticParameters gp) Returns the genetic clone of one of this expression's siblings.
protected ELExpression	cloneWithChildMutations(GeneticParameters gp) Clone, genetically cloning children but perfectly cloning this expression itself.
ELExpression	cloneWithReplacement(ELExpression e, int p) default is only appropriate when cloneWithChildMutations has no children.
protected ELExpression	encloseInNewCallMutation(GeneticParameters gp) Returns a clone of this expression with the children genetically cloned, surrounded by another randomly generated expression.
ELExpression	getNestedSubexpression(int targetNumber) returns this.
boolean	hasExternalInfluences() Returns true if the output is influenced by the environment.
int	numNestedSubexpressions() Returns 1.
ELExpression	randomNestedSubexpression() Returns this.
boolean	sameExpression(ELExpression other) Return true if this and other are equivalent expressions (unparse to the same value).

Methods inherited from class java.lang.Object

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

Methods inherited from interface ELExpression

evaluate, geneticClone, unparse

Constructor Detail

AbstractELExpression

public AbstractELExpression()

Method Detail

numNestedSubexpressions

public int numNestedSubexpressions()

Returns 1.

Specified by:

numNestedSubexpressions in interface ELExpression

randomNestedSubexpression

public ELExpression randomNestedSubexpression()

Returns this.

Specified by:

randomNestedSubexpression in interface ELExpression

hasExternalInfluences

public boolean hasExternalInfluences()

Description copied from interface: ELExpression

Returns true if the output is influenced by the environment.

Specified by:

hasExternalInfluences in interface ELExpression

getNestedSubexpression

public ELExpression getNestedSubexpression(int targetNumber)

returns this.

Specified by:

getNestedSubexpression in interface ELExpression

cloneWithReplacement

public ELExpression cloneWithReplacement(ELExpression e,
                                         int p)

default is only appropriate when cloneWithChildMutations has no children.

Specified by:

cloneWithReplacement in interface ELExpression

Following copied from interface: ELExpression

Parameters:

expression - Is not cloned.

cloneSiblingMutation

protected ELExpression cloneSiblingMutation(ELCall parent,
                                            GeneticParameters gp)

Returns the genetic clone of one of this expression's siblings. This is convenient to call when implementing geneticClone().

encloseInNewCallMutation

protected ELExpression encloseInNewCallMutation(GeneticParameters gp)

Returns a clone of this expression with the children genetically cloned, surrounded by another randomly generated expression. It may be convenient to call this when implementing geneticClone().

cloneWithChildMutations

protected ELExpression cloneWithChildMutations(GeneticParameters gp)

Clone, genetically cloning children but perfectly cloning this expression itself. The default implementation of encloseInNewCallMutation calls this method.

sameExpression

public boolean sameExpression(ELExpression other)

Description copied from interface: ELExpression

Return true if this and other are equivalent expressions (unparse to the same value).

Specified by:

sameExpression in interface ELExpression

clone

public abstract java.lang.Object clone()

Specified by:

clone in interface ELExpression

Overrides:

clone in class java.lang.Object