New experimental davmail.popCommonDeleted flag to switch to a different property on old Exchange 2003 servers

git-svn-id: http://svn.code.sf.net/p/davmail/code/trunk@2154 3d1905a2-6b24-0410-a738-b14d5a86fcbd

src/java/davmail/exchange/dav/Field.java

@@ -18,6 +18,7 @@
  */
 package davmail.exchange.dav;
 
+import davmail.Settings;
 import davmail.util.StringUtil;
 import org.apache.jackrabbit.webdav.property.DavPropertyName;
 import org.apache.jackrabbit.webdav.property.DefaultDavProperty;
@@ -121,14 +122,20 @@ public class Field {
         // POP and IMAP message
         createField("messageSize", 0x0e08, PropertyType.Integer);//PR_MESSAGE_SIZE
         createField("imapUid", 0x0e23, PropertyType.Integer);//PR_INTERNET_ARTICLE_NUMBER
-        createField("junk", 0x1083, PropertyType.Integer);
+        createField("junk", 0x1083, PropertyType.Integer); //PR_SPAMTYPE
         createField("flagStatus", 0x1090, PropertyType.Integer);//PR_FLAG_STATUS
         createField("messageFlags", 0x0e07, PropertyType.Integer);//PR_MESSAGE_FLAGS
         createField("lastVerbExecuted", 0x1081, PropertyType.Integer);//PR_LAST_VERB_EXECUTED
         createField("iconIndex", 0x1080, PropertyType.Integer);//PR_ICON_INDEX
         createField(URN_SCHEMAS_HTTPMAIL, "read");
         //createField("read", 0x0e69, PropertyType.Boolean);//PR_READ
-        createField("deleted", DistinguishedPropertySetType.Common, 0x8570, "deleted", PropertyType.String);
+
+        if (Settings.getBooleanProperty("davmail.popCommonDeleted", true)) {
+            // deleted flag, see http://microsoft.public.win32.programmer.messaging.narkive.com/w7Mrsrsx/how-to-detect-deleted-imap-messages-using-mapi-outlook-object-model-api
+            createField("deleted", DistinguishedPropertySetType.Common, 0x8570, "deleted", PropertyType.String);
+        } else {
+            createField("deleted", DistinguishedPropertySetType.PublicStrings);
+        }
 
         //createField(URN_SCHEMAS_HTTPMAIL, "date");//PR_CLIENT_SUBMIT_TIME, 0x0039
         createField("date", 0x0e06, PropertyType.SystemTime);//PR_MESSAGE_DELIVERY_TIME