Package org.moeaframework.util.tree

Class Sequence

java.lang.Object

org.moeaframework.util.tree.Node

org.moeaframework.util.tree.Sequence

All Implemented Interfaces:

Serializable

public class Sequence
extends Node

The node for executing two or more expressions in sequence. The return value of the last expression is returned, and the return type should be specified using an appropriate constructor. Since the expressions are strongly typed, the type(s) specified in the constructor is important.

Node signature:

Name	Type	Description
Argument 1	User-Defined	The first expression
Argument 2	User-Defined	The second expression
Return Value	User-Defined	The return value of the last expression

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
Sequence()	Constructs a new node for executing two expressions in sequence.
Sequence(Class<?> type)	Constructs a new node for executing two expressions in sequence.
Sequence(Class<?>... types)	Constructs a new node for executing a specified number of expressions in sequence.
Sequence(Class<?> type1, Class<?> type2)	Constructs a new node for executing two expressions in sequence.

Method Summary

Modifier and Type	Method	Description
Sequence	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.

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, toString

Methods inherited from class java.lang.Object

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

Constructor Details

Sequence

public Sequence()

Constructs a new node for executing two expressions in sequence.

Sequence

public Sequence(Class<?> type)

Constructs a new node for executing two expressions in sequence.

Parameters:

type - the return type of the last expression to be executed

Sequence

public Sequence(Class<?> type1,
 Class<?> type2)

Constructs a new node for executing two expressions in sequence.

Parameters:

type1 - the return type of the first expression

type2 - the return type of the second expression, which is also the return type of this sequence

Sequence

public Sequence(Class<?>... types)

Constructs a new node for executing a specified number of expressions in sequence.

Parameters:

types - the types of each expression in this sequence

Method Details

copyNode

public Sequence 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