added tree-based resolution result to request/response

git-svn-id: https://svn.apache.org/repos/asf/maven/components/trunk@760781 13f79535-47bb-0310-9956-ffa450edef68

maven-repository/src/main/java/org/apache/maven/repository/MavenArtifactMetadata.java

@@ -19,6 +19,7 @@ under the License.
 
 package org.apache.maven.repository;
 
+
 /**
  *
  *
@@ -28,6 +29,8 @@ package org.apache.maven.repository;
  */
 public class MavenArtifactMetadata
 {
+    public static final String DEFAULT_TYPE = "jar";
+
     String groupId;
     String artifactId;
     String version;
@@ -107,4 +110,13 @@ public class MavenArtifactMetadata
         this.scope = scope;
     }
     
+    @Override
+    public String toString()
+    {
+        return getGroupId()+":"+getArtifactId()+":"+getVersion()
+        +":" + (getClassifier() == null ? "" : getClassifier() )
+        +":" + (getType() == null ? DEFAULT_TYPE : getType() )
+        ;
+    }
+    
 }

maven-repository/src/main/java/org/apache/maven/repository/MetadataGraph.java

@@ -19,6 +19,9 @@ under the License.
 
 package org.apache.maven.repository;
 
+import java.util.ArrayList;
+import java.util.Collection;
+
 /**
  *
  *
@@ -28,5 +31,23 @@ package org.apache.maven.repository;
  */
 public class MetadataGraph
 {
+    Collection<MetadataGraphNode> nodes;
+    MetadataGraphNode             entry;
     
+    public MetadataGraph( MetadataGraphNode entry )
+    {
+        this();
+        
+        this.entry = entry;
+    }
+    
+    public MetadataGraph()
+    {
+        nodes = new ArrayList<MetadataGraphNode>( 64 );
+    }
+
+    public void addNode( MetadataGraphNode node )
+    {
+        nodes.add( node );
+    }
 }

maven-repository/src/main/java/org/apache/maven/repository/MetadataGraphNode.java

@@ -31,6 +31,35 @@ import java.util.List;
 public class MetadataGraphNode
 {
     MavenArtifactMetadata   metadata;
+
     List<MetadataGraphNode> inNodes;
     List<MetadataGraphNode> exNodes;
+    
+    @Override
+    public boolean equals( Object obj )
+    {
+        if( obj == null )
+            return false;
+
+        if( MetadataGraphNode.class.isAssignableFrom( obj.getClass() ) )
+        {
+            MetadataGraphNode node2 = (MetadataGraphNode) obj;
+            
+            if( node2.metadata == null )
+                return metadata == null;
+            
+            return metadata == null ? false: metadata.toString().equals( node2.metadata.toString() );
+        }
+        else
+            return super.equals( obj );
+    }
+    
+    @Override
+    public int hashCode()
+    {
+        if( metadata == null )
+            return super.hashCode();
+        
+        return metadata.toString().hashCode();
+    }
 }

maven-repository/src/main/java/org/apache/maven/repository/MetadataResolutionResult.java

@@ -66,8 +66,12 @@ public class MetadataResolutionResult
 
     private Set<Artifact> artifacts;
     
+    private MetadataGraph dirtyTree;
+    
     private MetadataGraph resolvedTree;
     
+    private MetadataGraph resolvedGraph;
+
     public Artifact getOriginatingArtifact()
     {
         return originatingArtifact;