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

Class PreorderDependencyNodeConsumerVisitor

java.lang.Object

org.eclipse.aether.util.graph.visitor.PreorderDependencyNodeConsumerVisitor

All Implemented Interfaces:

DependencyVisitor

public final class PreorderDependencyNodeConsumerVisitor
extends Object

Processes dependency graph by traversing the graph in preorder. 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.

Instances of this class cannot be embedded into FilteringDependencyVisitor, pass in the filter DependencyFilter into constructor instead.

Since:

2.0.0

See Also:

• NodeListGenerator

Field Summary

Fields

Modifier and Type	Field	Description
static final String	NAME

Constructor Summary

Constructors

Constructor	Description
PreorderDependencyNodeConsumerVisitor(Consumer<DependencyNode> nodeConsumer)	Creates a new preorder list generator.
PreorderDependencyNodeConsumerVisitor(Consumer<DependencyNode> nodeConsumer, DependencyFilter filter)	Creates a new preorder list generator.

Method Summary

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

Constructor Details

PreorderDependencyNodeConsumerVisitor

public PreorderDependencyNodeConsumerVisitor(Consumer<DependencyNode> nodeConsumer)

Creates a new preorder list generator.

PreorderDependencyNodeConsumerVisitor

public PreorderDependencyNodeConsumerVisitor(Consumer<DependencyNode> nodeConsumer,
 DependencyFilter filter)

Creates a new preorder list generator.

Since:

2.0.12

Method Details

doVisitEnter

protected boolean doVisitEnter(DependencyNode node)

doVisitLeave

protected boolean doVisitLeave(DependencyNode node)

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

visitEnter

public final 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 final 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.

acceptNode

protected boolean acceptNode(DependencyNode node)

consumeNode

protected void consumeNode(DependencyNode node)