Package org.eclipse.aether.util.graph.visitor

Class PostorderDependencyNodeConsumerVisitor

java.lang.Object

org.eclipse.aether.util.graph.visitor.PostorderDependencyNodeConsumerVisitor

All Implemented Interfaces:

DependencyVisitor

public final class PostorderDependencyNodeConsumerVisitor
extends Object

Processes dependency graph by traversing the graph in postorder. This visitor visits each node exactly once regardless how many paths within the dependency graph lead to the node such that the resulting node sequence is free of duplicates.

Since:

2.0.0

See Also:

• NodeListGenerator

Field Summary

Fields

Modifier and Type	Field	Description
static final String	NAME
protected final Consumer<DependencyNode>	nodeConsumer

Constructor Summary

Constructors

Constructor	Description
PostorderDependencyNodeConsumerVisitor(Consumer<DependencyNode> nodeConsumer)	Creates a new postorder list generator.

Method Summary

Modifier and Type	Method	Description
protected boolean	setVisited(DependencyNode node)	Marks the specified node as being visited and determines whether the node has been visited before.
boolean	visitEnter(DependencyNode node)	Notifies the visitor of a node visit before its children have been processed.
boolean	visitLeave(DependencyNode node)	Notifies the visitor of a node visit after its children have been processed.

Methods inherited from class java.lang.Object

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

Field Details

NAME

public static final String NAME

See Also:

• Constant Field Values

nodeConsumer

protected final Consumer<DependencyNode> nodeConsumer

Constructor Details

PostorderDependencyNodeConsumerVisitor

public PostorderDependencyNodeConsumerVisitor(Consumer<DependencyNode> nodeConsumer)

Creates a new postorder list generator.

Method Details

visitEnter

public boolean visitEnter(DependencyNode node)

Description copied from interface: DependencyVisitor

Notifies the visitor of a node visit before its children have been processed.

Specified by:

visitEnter in interface DependencyVisitor

Parameters:

node - The dependency node being visited, must not be null.

Returns:

true to visit child nodes of the specified node as well, false to skip children.

visitLeave

public boolean visitLeave(DependencyNode node)

Description copied from interface: DependencyVisitor

Notifies the visitor of a node visit after its children have been processed. Note that this method is always invoked regardless whether any children have actually been visited.

Specified by:

visitLeave in interface DependencyVisitor

Parameters:

node - The dependency node being visited, must not be null.

Returns:

true to visit siblings nodes of the specified node as well, false to skip siblings.

setVisited

protected boolean setVisited(DependencyNode node)

Marks the specified node as being visited and determines whether the node has been visited before.

Parameters:

node - The node being visited, must not be null.

Returns:

true if the node has not been visited before, false if the node was already visited.