OPENJPA-1818 Exclude 'order' as valid column name.

git-svn-id: https://svn.apache.org/repos/asf/openjpa/trunk@1021875 13f79535-47bb-0310-9956-ffa450edef68

openjpa-jdbc/src/main/java/org/apache/openjpa/jdbc/sql/H2Dictionary.java

@@ -73,6 +73,13 @@ public class H2Dictionary extends DBDictionary {
             "ROWNUM", "SELECT", "SYSDATE", "SYSTIME", "SYSTIMESTAMP", "TODAY",
             "TRUE", "UNION", "WHERE" 
             }));
+        
+        // reservedWordSet subset that CANNOT be used as valid column names
+        // (i.e., without surrounding them with double-quotes)
+        invalidColumnWordSet.addAll(Arrays.asList(new String[]{
+            "ORDER",
+        }));
+
     }
 
     @Override