Package org.moeaframework.util.tree

Class Get

java.lang.Object

org.moeaframework.util.tree.Node

org.moeaframework.util.tree.Get

All Implemented Interfaces:

Serializable

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.

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.

Node signature:

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

See Also:

• Set
• Serialized Form

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
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()

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 Details

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 Details

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()

Overrides:

toString in class Node