Various fixes for MS Office problems (two versions on edit/save, version generated when file opened and not changed (ACT 3691).

Added file access/change/modification timestamp tracking for open files via the file state cache.
Added set file information support for setting creation and modification timestamps, used by MS Office to transfer original timestamp to new document.

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@10007 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/filesys/repo/ContentNetworkFile.java

@@ -69,6 +69,8 @@ public class ContentNetworkFile extends NodeRefNetworkFile
 {
     private static final Log logger = LogFactory.getLog(ContentNetworkFile.class);
     
+    // Services
+    
     private NodeService nodeService;
     private ContentService contentService;
     private MimetypeService mimetypeService;
@@ -107,7 +109,20 @@ public class ContentNetworkFile extends NodeRefNetworkFile
         
         // Create the file
         
-        ContentNetworkFile netFile = new ContentNetworkFile(nodeService, contentService, mimetypeService, nodeRef, path);
+        ContentNetworkFile netFile = null;
+        
+        if ( isMSOfficeSpecialFile(path)) {
+        	
+        	// Create a file for special processing
+        	
+        	netFile = new MSOfficeContentNetworkFile( nodeService, contentService, mimetypeService, nodeRef, path);
+        }
+        else {
+        	
+        	// Create a normal content file
+        
+        	netFile = new ContentNetworkFile(nodeService, contentService, mimetypeService, nodeRef, path);
+        }
         
         // Set relevant parameters
         
@@ -182,7 +197,7 @@ public class ContentNetworkFile extends NodeRefNetworkFile
      * @param nodeRef NodeRef
      * @param name String
      */
-    private ContentNetworkFile(
+    protected ContentNetworkFile(
             NodeService nodeService,
             ContentService contentService,
             MimetypeService mimetypeService,
@@ -439,6 +454,11 @@ public class ContentNetworkFile extends NodeRefNetworkFile
         
         setFileSize( size);
         
+        // Update the modification date/time
+        
+        if ( getFileState() != null)
+        	getFileState().updateModifyDateTime();
+        
         // DEBUG
         
         if (logger.isDebugEnabled())
@@ -475,6 +495,11 @@ public class ContentNetworkFile extends NodeRefNetworkFile
         
         setFileSize(channel.size());
         
+        // Update the modification date/time
+        
+        if ( getFileState() != null)
+        	getFileState().updateModifyDateTime();
+
         // DEBUG
         
         if (logger.isDebugEnabled())
@@ -507,6 +532,11 @@ public class ContentNetworkFile extends NodeRefNetworkFile
             count = 0;  // doesn't obey the same rules, i.e. just returns the bytes read
         }
         
+        // Update the access date/time
+        
+        if ( getFileState() != null)
+        	getFileState().updateAccessDateTime();
+
         // DEBUG
         
         if (logger.isDebugEnabled())
@@ -574,6 +604,11 @@ public class ContentNetworkFile extends NodeRefNetworkFile
             break;
         }
 
+        // Update the access date/time
+        
+        if ( getFileState() != null)
+        	getFileState().updateAccessDateTime();
+
         // DEBUG
         
         if (logger.isDebugEnabled())
@@ -601,9 +636,31 @@ public class ContentNetworkFile extends NodeRefNetworkFile
         
         channel.force(false);
         
+        // Update the access date/time
+        
+        if ( getFileState() != null)
+        	getFileState().updateAccessDateTime();
+
         // DEBUG
         
         if (logger.isDebugEnabled())
             logger.debug("Flush file=" + this);
     }
+    
+    /**
+     * Check if the file is an MS Office document type that needs special processing
+     * 
+     * @param path String
+     * @return boolean
+     */
+    private static final boolean isMSOfficeSpecialFile(String path) {
+    	
+    	// Check if the file extension indicates a problem MS Office format
+
+    	path = path.toLowerCase();
+    	
+    	if ( path.endsWith( ".xls"))
+    		return true;
+    	return false;
+    }
 }