extract inner class to a real class

starting adding services for project generic metadatas.

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1304879 13f79535-47bb-0310-9956-ffa450edef68

archiva-modules/archiva-web/archiva-rest/archiva-rest-services/src/main/java/org/apache/archiva/rest/services/utils/TreeDependencyNodeVisitor.java

@@ -0,0 +1,72 @@
+package org.apache.archiva.rest.services.utils;
+/*
+ * 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 net.sf.beanlib.provider.replicator.BeanReplicator;
+import org.apache.archiva.rest.api.model.Artifact;
+import org.apache.archiva.rest.api.model.TreeEntry;
+import org.apache.maven.shared.dependency.tree.DependencyNode;
+import org.apache.maven.shared.dependency.tree.traversal.DependencyNodeVisitor;
+
+import java.util.List;
+
+/**
+ * @author Olivier Lamy
+ * @since 1.4-M3
+ */
+public class TreeDependencyNodeVisitor
+    implements DependencyNodeVisitor
+{
+
+    final List<TreeEntry> treeEntries;
+
+    private TreeEntry currentEntry;
+
+    private DependencyNode firstNode;
+
+    public TreeDependencyNodeVisitor( List<TreeEntry> treeEntries )
+    {
+        this.treeEntries = treeEntries;
+    }
+
+    public boolean visit( DependencyNode node )
+    {
+        TreeEntry entry = new TreeEntry( new BeanReplicator().replicateBean( node.getArtifact(), Artifact.class ) );
+        entry.setParent( currentEntry );
+        currentEntry = entry;
+
+        if ( firstNode == null )
+        {
+            firstNode = node;
+            treeEntries.add( currentEntry );
+        }
+        else
+        {
+            currentEntry.getParent().getChilds().add( currentEntry );
+        }
+        return true;
+    }
+
+    public boolean endVisit( DependencyNode node )
+    {
+        currentEntry = currentEntry.getParent();
+        return true;
+    }
+
+}