Index: topia-service/src/java/org/codelutin/topia/migration/callback/MigrationCallbackHandler.java
diff -u /dev/null topia-service/src/java/org/codelutin/topia/migration/callback/MigrationCallbackHandler.java:1.1
--- /dev/null	Wed Nov 14 17:36:16 2007
+++ topia-service/src/java/org/codelutin/topia/migration/callback/MigrationCallbackHandler.java	Wed Nov 14 17:36:11 2007
@@ -0,0 +1,40 @@
+/* *##%
+ * Copyright (C) 2007 Code Lutin
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *##%*/
+
+package org.codelutin.topia.migration.callback;
+
+/**
+ * MigrationCallBackHandler
+ *
+ * @author chatellier
+ * @version $Revision: 1.1 $
+ *
+ * Last update : $Date: 2007-11-14 17:36:11 $
+ * By : $Author: chatellier $
+ */
+public interface MigrationCallbackHandler {
+
+    /**
+     * Ask for migration
+     * 
+     * @param databaseVersion database version
+     * @param applicationVersion application version
+     * @return migration aggrement
+     */
+    public boolean doMigration(String databaseVersion, String applicationVersion);
+}