warning if the DBs already exist in WORK

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@1390 6c8d7289-2bf4-0310-a012-ef5d649a1542

source/migration.java

@@ -63,38 +63,51 @@ public class migration {
         File file=new File(sb.getRootPath(), "DATA/SETTINGS/wiki.db");
         File file2;
         if (file.exists()) {
-            serverLog.logInfo("MIGRATION", "Migrating wiki.db to "+ sb.workPath);
-            sb.wikiDB.close();
+            serverLog.logInfo("MIGRATION", "Migrating wiki.db to "
+                    + sb.workPath);
             file2 = new File(sb.workPath, "wiki.db");
-            try {
-                serverFileUtils.copy(file, file2);
-                file.delete();
-            } catch (IOException e) {
-            }
-            
-            file = new File(sb.getRootPath(), "DATA/SETTINGS/wiki-bkp.db");
-            if (file.exists()) {
-                serverLog.logInfo("MIGRATION", "Migrating wiki-bkp.db to "+ sb.workPath);
-                file2 = new File(sb.workPath, "wiki-bkp.db");
+            if (file2.exists()) {
+                serverLog.logWarning("MIGRATION", "wiki.db already exists in "
+                  + sb.workPath + "! Not migrating.");
+            } else {
+                sb.wikiDB.close();
                 try {
                     serverFileUtils.copy(file, file2);
                     file.delete();
-                } catch (IOException e) {}        
+                } catch (IOException e) {
+                }
+
+                file = new File(sb.getRootPath(), "DATA/SETTINGS/wiki-bkp.db");
+                if (file.exists()) {
+                    serverLog.logInfo("MIGRATION", "Migrating wiki-bkp.db to " + sb.workPath);
+                    file2 = new File(sb.workPath, "wiki-bkp.db");
+                    try {
+                        serverFileUtils.copy(file, file2);
+                        file.delete();
+                    } catch (IOException e) {
+                    }
+                }
+                sb.initWiki((int) sb.getConfigLong("ramCacheWiki", 1024) / 1024);
             }
-            sb.initWiki((int) sb.getConfigLong("ramCacheWiki", 1024) / 1024);
         }
         
         
         file=new File(sb.getRootPath(), "DATA/SETTINGS/message.db");
-        if(file.exists()){
-            serverLog.logInfo("MIGRATION", "Migrating message.db to "+ sb.workPath);
-            sb.messageDB.close();
-            file2=new File(sb.workPath, "message.db");
-            try {
-                serverFileUtils.copy(file, file2);
-                file.delete();
-            } catch (IOException e) {}
-            sb.initMessages((int) sb.getConfigLong("ramCacheMessage", 1024) / 1024);
+        if (file.exists()) {
+            serverLog.logInfo("MIGRATION", "Migrating message.db to " + sb.workPath);
+            file2 = new File(sb.workPath, "message.db");
+            if (file2.exists()) {
+                serverLog.logWarning("MIGRATION", "message.db already exists in " + sb.workPath + "! Not migrating.");
+            } else {
+                sb.messageDB.close();
+
+                try {
+                    serverFileUtils.copy(file, file2);
+                    file.delete();
+                } catch (IOException e) {
+                }
+                sb.initMessages((int) sb.getConfigLong("ramCacheMessage", 1024) / 1024);
+            }
         }
     }