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package org.apache.maven.execution;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
import java.util.List;
import org.apache.maven.project.MavenProject;
/**
* Describes the inter-dependencies between projects in the reactor.
*
* @author Benjamin Bentmann
*/
public interface ProjectDependencyGraph
{
/**
* Gets all projects in their intended build order, i.e. after topologically sorting the projects according to their
* inter-dependencies.
*
* @return The projects in the build order, never {@code null}.
*/
List<MavenProject> getSortedProjects();
/**
* Gets the downstream projects of the specified project. A downstream project is a project that directly or
* indirectly depends on the given project.
*
* @param project The project whose downstream projects should be retrieved, must not be {@code null}.
* @param transitive A flag whether to retrieve all direct and indirect downstream projects or just the immediate
* downstream projects.
* @return The downstream projects in the build order, never {@code null}.
*/
List<MavenProject> getDownstreamProjects( MavenProject project, boolean transitive );
/**
* Gets the upstream projects of the specified project. An upstream project is a project that directly or indirectly
* is a prerequisite of the given project.
*
* @param project The project whose upstream projects should be retrieved, must not be {@code null}.
* @param transitive A flag whether to retrieve all direct and indirect upstream projects or just the immediate
* upstream projects.
* @return The upstream projects in the build order, never {@code null}.
*/
List<MavenProject> getUpstreamProjects( MavenProject project, boolean transitive );
}
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