org.oakgp.node

Class ConstantNode

java.lang.Object

org.oakgp.node.ConstantNode

All Implemented Interfaces:

Node

public final class ConstantNode
extends Object

Represents a constant value.

Return the same value each time is it evaluated.

Constructor Summary

Constructors

Constructor and Description
ConstantNode(Object value, Type type) Constructs a new ConstantNode that represents the specified value.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
Object	evaluate(Assignments assignments) Returns the value specified when this ConstantNode was constructed.
int	getHeight() Returns the height of this Node.
int	getNodeCount() Returns the total number of nodes represented by this Node - including any child-nodes.
NodeType	getNodeType() Returns the NodeType of this Node.
Type	getType() Returns the Type of this Node.
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

ConstantNode

public ConstantNode(Object value,
                    Type type)

Constructs a new ConstantNode that represents the specified value.

Parameters:

value - the value to be represented by the ConstantNode

type - the Type that the value represented by this node is of

Method Detail

evaluate

public Object evaluate(Assignments assignments)

Returns the value specified when this ConstantNode was constructed.

Parameters:

assignments - represents the values to assign to any variables used in the evaluation of this Node

Returns:

the result of evaluating this Node using the values of the specified Assignments

getType

public Type getType()

Description copied from interface: Node

Returns the Type of this Node.

This indicates the type of the value returned when #evaluate(Assignments) is called on this Node.

getNodeType

public NodeType getNodeType()

Description copied from interface: Node

Returns the NodeType of this Node.

This can be used to determine if the node is a function, constant or variable node.

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object

getHeight

public final int getHeight()

Description copied from interface: Node

Returns the height of this Node.

The height of a node is the number of edges on the longest downward path between that node and a leaf.

Specified by:

getHeight in interface Node

getNodeCount

public final int getNodeCount()

Description copied from interface: Node

Returns the total number of nodes represented by this Node - including any child-nodes.

Specified by:

getNodeCount in interface Node