1 files changed, 64 insertions, 0 deletions
diff --git a/framework/src/maven/apache-maven-3.3.3/maven-core/src/main/java/org/apache/maven/execution/ProjectDependencyGraph.java b/framework/src/maven/apache-maven-3.3.3/maven-core/src/main/java/org/apache/maven/execution/ProjectDependencyGraph.java
new file mode 100644
index 00000000..1db277db
--- /dev/null
+++ b/framework/src/maven/apache-maven-3.3.3/maven-core/src/main/java/org/apache/maven/execution/ProjectDependencyGraph.java
@@ -0,0 +1,64 @@
+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 );
+
+}