Added deleteNodeProperties to AVMService interface. Fits in well with NodeService

behavior.  Outline of implementation of AVMNodeService, an AVM based 
implementationof NodeService.


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/BRANCHES/WCM-DEV2/root@3438 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/avm/AVMNodeConverter.java

@@ -0,0 +1,112 @@
+/*
+ * Copyright (C) 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.repo.avm;
+
+import org.alfresco.service.cmr.repository.NodeRef;
+import org.alfresco.service.cmr.repository.StoreRef;
+
+/**
+ * Utility for going back and forth between the AVM world and
+ * the <code>StoreRef</code>, <code>NodeRef</code> world.
+ * @author britt
+ */
+class AVMNodeConverter
+{
+    /**
+     * Get a NodeRef corresponding to the given path and version.
+     * @param version The version id.
+     * @param avmPath The AVM path.
+     * @return A NodeRef with AVM info stuffed inside.
+     */
+    public static NodeRef ToNodeRef(int version, String avmPath)
+    {
+        String [] pathParts = avmPath.split(":");
+        if (pathParts.length != 2)
+        {
+            throw new AVMException("Malformed AVM Path.");
+        }
+        StoreRef storeRef = ToStoreRef(pathParts[0]);
+        String translated = version + pathParts[1];
+        return new NodeRef(storeRef, translated);
+    }
+    
+    /**
+     * Get a StoreRef that corresponds to a given AVMStore name.
+     * @param avmStore The name of the AVMStore.
+     * @return A working StoreRef.
+     */
+    public static StoreRef ToStoreRef(String avmStore)
+    {
+        return new StoreRef(StoreRef.PROTOCOL_AVM, avmStore);
+    }
+    
+    /**
+     * Convert a NodeRef into a version, AVMPath pair.
+     * @param nodeRef The NodeRef to convert.
+     * @return An Integer, String array.
+     */
+    public static Object[] ToAVMVersionPath(NodeRef nodeRef)
+    {
+        StoreRef store = nodeRef.getStoreRef();
+        String translated = nodeRef.getId();
+        int off = translated.indexOf("/");
+        int version = Integer.parseInt(translated.substring(0, off));
+        String path = translated.substring(off);
+        Object [] result = new Object[2];
+        result[0] = new Integer(version);
+        result[1] = store.getIdentifier() + ":" + path;
+        return result;
+    }
+
+    /**
+     * Extend an already valid AVM path by one more component.
+     * @param path The starting AVM path.
+     * @param name The name to add to it.
+     * @return The extended path.
+     */
+    public static String ExtendAVMPath(String path, String name)
+    {
+        if (path.endsWith("/"))
+        {
+            return path + name;
+        }
+        else
+        {
+            return path + "/" + name;
+        }
+    }
+
+    /**
+     * Split a path into its parent path and its base name.
+     * @param path The initial AVM path.
+     * @return An array of 2 Strings containing the parent path and the base
+     * name.
+     */
+    public static String [] SplitBase(String path)
+    {
+        int off = path.lastIndexOf("/");
+        if (off == -1)
+        {
+            throw new AVMException("Invalid Path.");
+        }
+        String [] decomposed = new String[2];
+        decomposed[0] = path.substring(0, off);
+        decomposed[1] = path.substring(off + 1);
+        return decomposed;
+    }
+}