Big refactor for new caching mechanism.

OpenChange/SOGoCacheGCSObject+MAPIStore.m

@@ -0,0 +1,42 @@
+#include "SOGoCacheGCSObject+MAPIStore.h"
+
+@implementation SOGoCacheGCSObject (MAPIStore)
+
+- (Class) mapistoreMessageClass
+{
+  NSString *className, *mapiMsgClass;
+
+  switch (objectType)
+    {
+    case MAPIMessageCacheObject:
+      mapiMsgClass = [properties
+                       objectForKey: MAPIPropertyKey (PidTagMessageClass)];
+      if (mapiMsgClass)
+        {
+          if ([mapiMsgClass isEqualToString: @"IPM.StickyNote"])
+            className = @"MAPIStoreNotesMessage";
+          else
+            className = @"MAPIStoreDBMessage";
+          //[self logWithFormat: @"PidTagMessageClass = '%@', returning '%@'",
+          //      mapiMsgClass, className];
+        }
+      else
+        {
+          //[self warnWithFormat: @"PidTagMessageClass is not set, falling back"
+          //      @" to 'MAPIStoreDBMessage'"];
+          className = @"MAPIStoreDBMessage";
+        }
+      break;
+    case MAPIFAICacheObject:
+      className = @"MAPIStoreFAIMessage";
+      break;
+    default:
+      [NSException raise: @"MAPIStoreIOException"
+                  format: @"message class should not be queried for objects"
+                   @" of type '%d'", objectType];
+    }
+
+  return NSClassFromString (className);
+}
+
+@end