org.sonatype.aether.collection.DependencyGraphTransformer 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.RepositoryException;
import org.sonatype.aether.graph.DependencyNode;
/**
* Transforms a given dependency graph. Note: Dependency graphs may contain cycles, as such a graph transformer
* needs to gracefully handle cyclic graphs, e.g. guard against infinite recursion.
*
* @author Benjamin Bentmann
* @see org.sonatype.aether.RepositorySystemSession#getDependencyGraphTransformer()
*/
public interface DependencyGraphTransformer
{
/**
* Transforms the dependency graph denoted by the specified root node. The transformer may directly change the
* provided input graph or create a new graph.
*
* @param node The root node of the (possibly cyclic!) graph to transform, must not be {@code null}.
* @param context The graph transformation context, must not be {@code null}.
* @return The result graph of the transformation, never {@code null}.
* @throws RepositoryException If the transformation failed.
*/
DependencyNode transformGraph( DependencyNode node, DependencyGraphTransformationContext context )
throws RepositoryException;
}