org.sonatype.aether.collection.DependencyManager Maven / Gradle / Ivy
package org.sonatype.aether.collection;
/*******************************************************************************
* Copyright (c) 2010-2011 Sonatype, Inc.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*******************************************************************************/
import org.sonatype.aether.graph.Dependency;
/**
* Applies dependency management to the dependencies of a dependency node. Note: For the sake of good
* performance during dependency collection, implementations should provide a semantic {@link Object#equals(Object)
* equals()} method.
*
* @author Benjamin Bentmann
* @see org.sonatype.aether.RepositorySystemSession#getDependencyManager()
* @see org.sonatype.aether.RepositorySystem#collectDependencies(org.sonatype.aether.RepositorySystemSession,
* CollectRequest)
*/
public interface DependencyManager
{
/**
* Applies dependency management to the specified dependency.
*
* @param dependency The dependency to manage, must not be {@code null}.
* @return The management update to apply to the dependency or {@code null} if the dependency is not managed at all.
*/
DependencyManagement manageDependency( Dependency dependency );
/**
* Derives a dependency manager for the specified collection context. When calculating the child manager,
* implementors are strongly advised to simply return the current instance if nothing changed to help save memory.
*
* @param context The dependency collection context, must not be {@code null}.
* @return The dependency manager for the dependencies of the target node, must not be {@code null}.
*/
DependencyManager deriveChildManager( DependencyCollectionContext context );
}