Merge pull request #67 from ianbondoc/patch-1

Support setting non-standard isolation level

Author: rbygrave

ebean-datasource/src/main/java/io/ebean/datasource/pool/TransactionIsolation.java

@@ -25,7 +25,7 @@ static String getDescription(int level) {
       case -1:
         return "NotSet";
       default:
-        throw new RuntimeException("Transaction Isolation level [" + level + "] is not defined.");
+        return "UNKNOWN[" + level + "]";
     }
   }
 }