Merged V3.4-BUG-FIX

30520: Revisited timestamp propagation (cm:modified) now that the system does this by default
          - Original low-level code (Hibernate optimizations) pulled back into NodeService implementation
          - Use case driven prompting to touch the parent node
          - Full indexing and policy callbacks against parent (was missing completely)
          - Optimizations to ensure parent node modifications are only done where required and
            the same transaction is used where possible
          - 1s accuracy limit is maintained to prevent unnecessary modifications
          - Enhanced tests to cover use cases where propagation is expected
            - ALF-10262: Timestamp propagation is enabled by default
          - Fixes or will fix:
            - ALF-10291: Test disabled: SOLRTrackingComponentTest (various)
            - ALF-7433: A file deleted using the web UI still appears in a NFS mount but with NULL stats
            - ALF-10271: Test disabled: ArchiveAndRestoreTest.testAR7889ArchiveAndRestoreMustNotModifyAuditable
            - ALF-10267: Test disabled: NodeServiceTest.testArchiveAndRestore
         Also
          - Found problem where cm:auditable properties could be modified directly against the cached values
          - Extended locking of cached entities to the AuditablePropertiesEntity


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@30598 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/domain/node/Node.java

@@ -28,6 +28,11 @@ import org.alfresco.util.Pair;
  */
 public interface Node extends NodeIdAndAclId
 {
+    /**
+     * Helper method to force the instance to be read-only
+     */
+    public void lock();
+    
     public abstract NodeRef getNodeRef();
 
     public NodeRef.Status getNodeStatus();