org.moeaframework.util.tree
Class Get

java.lang.Object
  org.moeaframework.util.tree.Node
      org.moeaframework.util.tree.Get

public class Get
extends Node

The node for reading the value stored in a named variable within the current scope. See Set for details on scoping. The inputs and outputs to this node are shown below:

If the named variable has not yet been set, a default value is returned depending on the return type. For numeric values, the default is 0. For boolean values, the default is false. For objects, the default is null.

Name	Type	Description
Return Value	User-Defined	The valued stored in the named variable

See Also:

Set

Constructor Summary

Get(Class<?> type, String name)
Constructs a new node for reading the value stored in a named variable within the current scope.

Method Summary

Get	copyNode() Returns a copy of this node, but without any children or parents assigned.
Object	evaluate(Environment environment) Evaluates this node in the context of the specified environment.
Object	getDefaultValue() Returns the default value for the return type of this node.
String	toString() Returns a string representation of the object.

Methods inherited from class org.moeaframework.util.tree.Node

copyTree, getArgument, getArgumentType, getDepth, getFunctionAt, getFunctionAt, getMaximumHeight, getMinimumHeight, getNodeAt, getNodeAt, getNodeAt, getNumberOfArguments, getNumberOfFunctions, getNumberOfFunctions, getNumberOfNodes, getNumberOfNodes, getNumberOfNodes, getNumberOfTerminals, getNumberOfTerminals, getParent, getReturnType, getTerminalAt, getTerminalAt, isFixed, isTerminal, isValid, setArgument, setFixed, setFixedTree, size

Methods inherited from class java.lang.Object

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

Constructor Detail

Get

public Get(Class<?> type,
           String name)

Constructs a new node for reading the value stored in a named variable within the current scope.

Parameters:

type - the type of the variable

name - the name of the variable

Method Detail

copyNode

public Get copyNode()

Description copied from class: Node

Returns a copy of this node, but without any children or parents assigned.

Specified by:

copyNode in class Node

Returns:

a copy of this node, but without any children or parents assigned

evaluate

public Object evaluate(Environment environment)

Description copied from class: Node

Evaluates this node in the context of the specified environment.

Specified by:

evaluate in class Node

Parameters:

environment - the execution environment

Returns:

the result of evaluating this node

getDefaultValue

public Object getDefaultValue()

Returns the default value for the return type of this node.

Returns:

the default value for the return type of this node

toString

public String toString()

Description copied from class: java.lang.Object

Returns a string representation of the object. In general, the toString method returns a string that "textually represents" this object. The result should be a concise but informative representation that is easy for a person to read. It is recommended that all subclasses override this method.

The toString method for class Object returns a string consisting of the name of the class of which the object is an instance, the at-sign character `@', and the unsigned hexadecimal representation of the hash code of the object. In other words, this method returns a string equal to the value of:

 getClass().getName() + '@' + Integer.toHexString(hashCode())
 

Overrides:

toString in class Node

Returns:

a string representation of the object.