diff --git a/src/main/java/org/apache/maven/shared/dependency/graph/DependencyNode.java b/src/main/java/org/apache/maven/shared/dependency/graph/DependencyNode.java
index 76b2177..9b6b4a3 100644
--- a/src/main/java/org/apache/maven/shared/dependency/graph/DependencyNode.java
+++ b/src/main/java/org/apache/maven/shared/dependency/graph/DependencyNode.java
@@ -45,4 +45,11 @@
      * @since 1.1
      */
     public boolean accept( DependencyNodeVisitor visitor );
+
+    /**
+     * Gets the parent dependency node of this dependency node.
+     * 
+     * @return the parent dependency node
+     */
+    public DependencyNode getParent();
 }
diff --git a/src/main/java/org/apache/maven/shared/dependency/graph/filter/AncestorOrSelfDependencyNodeFilter.java b/src/main/java/org/apache/maven/shared/dependency/graph/filter/AncestorOrSelfDependencyNodeFilter.java
new file mode 100644
index 0000000..fb2f631
--- /dev/null
+++ b/src/main/java/org/apache/maven/shared/dependency/graph/filter/AncestorOrSelfDependencyNodeFilter.java
@@ -0,0 +1,106 @@
+package org.apache.maven.shared.dependency.graph.filter;
+
+/*
+ * 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.Collections;
+import java.util.List;
+
+import org.apache.maven.shared.dependency.graph.DependencyNode;
+
+/**
+ * A dependency node filter than only accepts nodes that are ancestors of, or equal to, a given list of nodes.
+ * 
+ * @author <a href="mailto:markhobson@gmail.com">Mark Hobson</a>
+ * @version $Id$
+ * @since 1.1
+ */
+public class AncestorOrSelfDependencyNodeFilter
+    implements DependencyNodeFilter
+{
+    // fields -----------------------------------------------------------------
+
+    /**
+     * The list of nodes that this filter accepts ancestors-or-self of.
+     */
+    private final List<DependencyNode> descendantNodes;
+
+    // constructors -----------------------------------------------------------
+
+    public AncestorOrSelfDependencyNodeFilter( DependencyNode descendantNode )
+    {
+        this( Collections.singletonList( descendantNode ) );
+    }
+
+    /**
+     * Creates a dependency node filter that only accepts nodes that are ancestors of, or equal to, the specified list
+     * of nodes.
+     * 
+     * @param descendantNodes
+     *            the list of nodes to accept ancestors-or-self of
+     */
+    public AncestorOrSelfDependencyNodeFilter( List<DependencyNode> descendantNodes )
+    {
+        this.descendantNodes = descendantNodes;
+    }
+
+    // DependencyNodeFilter methods -------------------------------------------
+
+    /**
+     * {@inheritDoc}
+     */
+    public boolean accept( DependencyNode node )
+    {
+        for ( DependencyNode descendantNode : descendantNodes )
+        {
+            if ( isAncestorOrSelf( node, descendantNode ) )
+            {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    // private methods --------------------------------------------------------
+
+    /**
+     * Gets whether the first dependency node is an ancestor-or-self of the second.
+     * 
+     * @param ancestorNode
+     *            the ancestor-or-self dependency node
+     * @param descendantNode
+     *            the dependency node to test
+     * @return <code>true</code> if <code>ancestorNode</code> is an ancestor, or equal to,
+     *         <code>descendantNode</code>
+     */
+    private boolean isAncestorOrSelf( DependencyNode ancestorNode, DependencyNode descendantNode )
+    {
+        boolean ancestor = false;
+
+        while ( !ancestor && descendantNode != null )
+        {
+            ancestor = ancestorNode.equals( descendantNode );
+
+            descendantNode = descendantNode.getParent();
+        }
+
+        return ancestor;
+    }
+}
diff --git a/src/main/java/org/apache/maven/shared/dependency/graph/internal/Maven2DependencyGraphBuilder.java b/src/main/java/org/apache/maven/shared/dependency/graph/internal/Maven2DependencyGraphBuilder.java
index 63a03c2..d0fb71a 100644
--- a/src/main/java/org/apache/maven/shared/dependency/graph/internal/Maven2DependencyGraphBuilder.java
+++ b/src/main/java/org/apache/maven/shared/dependency/graph/internal/Maven2DependencyGraphBuilder.java
@@ -48,7 +48,7 @@
     {
         try
         {
-            return new Maven2DependencyNode( treeBuilder.buildDependencyTree( project ), filter );
+            return new Maven2DependencyNode( null, treeBuilder.buildDependencyTree( project ), filter );
         }
         catch ( DependencyTreeBuilderException e )
         {
diff --git a/src/main/java/org/apache/maven/shared/dependency/graph/internal/Maven2DependencyNode.java b/src/main/java/org/apache/maven/shared/dependency/graph/internal/Maven2DependencyNode.java
index ec51df5..46d3a20 100644
--- a/src/main/java/org/apache/maven/shared/dependency/graph/internal/Maven2DependencyNode.java
+++ b/src/main/java/org/apache/maven/shared/dependency/graph/internal/Maven2DependencyNode.java
@@ -41,8 +41,12 @@
 
     private final List<DependencyNode> children;
 
-    public Maven2DependencyNode( org.apache.maven.shared.dependency.tree.DependencyNode node, ArtifactFilter filter )
+    private final DependencyNode parent;
+
+    public Maven2DependencyNode( DependencyNode parent, org.apache.maven.shared.dependency.tree.DependencyNode node,
+                                 ArtifactFilter filter )
     {
+        this.parent = parent;
         this.artifact = node.getArtifact();
 
         List<DependencyNode> nodes = new ArrayList<DependencyNode>( node.getChildren().size() );
@@ -50,7 +54,7 @@
         {
             if ( ( filter == null ) || filter.include( child.getArtifact() ) )
             {
-                nodes.add( new Maven2DependencyNode( child, filter ) );
+                nodes.add( new Maven2DependencyNode( this, child, filter ) );
             }
         }
 
@@ -67,4 +71,8 @@
         return children;
     }
 
+    public DependencyNode getParent()
+    {
+        return parent;
+    }
 }
diff --git a/src/main/java/org/apache/maven/shared/dependency/graph/internal/Maven3DependencyGraphBuilder.java b/src/main/java/org/apache/maven/shared/dependency/graph/internal/Maven3DependencyGraphBuilder.java
index cd1b111..f59d984 100644
--- a/src/main/java/org/apache/maven/shared/dependency/graph/internal/Maven3DependencyGraphBuilder.java
+++ b/src/main/java/org/apache/maven/shared/dependency/graph/internal/Maven3DependencyGraphBuilder.java
@@ -66,7 +66,7 @@
 
             DependencyResolutionResult result = resolver.resolve( request );
 
-            return new Maven3DependencyNode( factory, result.getDependencyGraph(), project.getArtifact(), filter );
+            return new Maven3DependencyNode( null, factory, result.getDependencyGraph(), project.getArtifact(), filter );
         }
         catch ( DependencyResolutionException e )
         {
diff --git a/src/main/java/org/apache/maven/shared/dependency/graph/internal/Maven3DependencyNode.java b/src/main/java/org/apache/maven/shared/dependency/graph/internal/Maven3DependencyNode.java
index a27220a..ce10269 100644
--- a/src/main/java/org/apache/maven/shared/dependency/graph/internal/Maven3DependencyNode.java
+++ b/src/main/java/org/apache/maven/shared/dependency/graph/internal/Maven3DependencyNode.java
@@ -44,9 +44,14 @@
 
     private final List<DependencyNode> children;
 
-    public Maven3DependencyNode( ArtifactFactory factory, org.sonatype.aether.graph.DependencyNode node,
-                                 final Artifact artifact, ArtifactFilter filter )
+    private final DependencyNode parent;
+
+    public Maven3DependencyNode( DependencyNode parent, ArtifactFactory factory,
+                                 org.sonatype.aether.graph.DependencyNode node, final Artifact artifact,
+                                 ArtifactFilter filter )
     {
+        this.parent = parent;
+
         if ( artifact != null )
         {
             this.artifact = artifact;
@@ -75,7 +80,7 @@
         List<DependencyNode> nodes = new ArrayList<DependencyNode>( node.getChildren().size() );
         for ( org.sonatype.aether.graph.DependencyNode child : node.getChildren() )
         {
-            DependencyNode tmpNode = new Maven3DependencyNode( factory, child, null, filter );
+            DependencyNode tmpNode = new Maven3DependencyNode( this, factory, child, null, filter );
 
             if ( tmpNode.getArtifact() != null )
             {
@@ -95,4 +100,8 @@
         return children;
     }
 
+    public DependencyNode getParent()
+    {
+        return parent;
+    }
 }