Updates to AVM virtualization view for the latest layout with DATA and METADATA folders.

Fixes to AVM filesystem transaction handling.
Made SrvSession.beginTransaction() private and added beginReadTransaction() and beginWriteTransaction().

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@4580 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/filesys/avm/DummyFolderPseudoFile.java

@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2005-2006 Alfresco, Inc.
+ *
+ * Licensed under the Mozilla Public License version 1.1 
+ * with a permitted attribution clause. You may obtain a
+ * copy of the License at
+ *
+ *   http://www.alfresco.org/legal/license.txt
+ *
+ * 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.
+ */
+package org.alfresco.filesys.avm;
+
+import org.alfresco.filesys.server.filesys.FileAttribute;
+import org.alfresco.filesys.server.filesys.FileInfo;
+import org.alfresco.filesys.server.filesys.FileName;
+import org.alfresco.filesys.server.filesys.NetworkFile;
+import org.alfresco.filesys.server.pseudo.PseudoFile;
+import org.alfresco.filesys.server.pseudo.PseudoFolderNetworkFile;
+
+/**
+ * Dummy Folder Pseudo File Class
+ * 
+ * <p>Represents a dummy folder within the virtualization filesystem view.
+ *
+ * @author gkspencer
+ */
+public class DummyFolderPseudoFile extends PseudoFile {
+
+	/**
+	 * Class constructor
+	 * 
+	 * @param fname String
+	 */
+	public DummyFolderPseudoFile( String fname)
+	{
+		super( fname, FileAttribute.Directory + FileAttribute.ReadOnly);
+		
+		// Create static file information from the folder details
+		
+		FileInfo fInfo = new FileInfo( fname, 0L, FileAttribute.Directory + FileAttribute.ReadOnly);
+		fInfo.setCreationDateTime( System.currentTimeMillis());
+		
+		setFileInfo( fInfo);
+	}
+	
+    /**
+     * Return a network file for reading/writing the pseudo file
+     * 
+     * @param netPath String
+     * @return NetworkFile
+     */
+	@Override
+	public NetworkFile getFile(String netPath) {
+		
+		// Split the path to get the name
+		
+		String[] paths = FileName.splitPath( netPath);
+		
+		// Create a network file for the folder
+		
+		return new PseudoFolderNetworkFile( paths[1], netPath);
+	}
+
+    /**
+     * Return the file information for the pseudo file
+     *
+     * @return FileInfo
+     */
+	@Override
+	public FileInfo getFileInfo() {
+		return getInfo();
+	}
+}