public static String buildDeleteSql(Class class1, String s)
 {
     class1 = new StringBuffer(getDeleteSqlBytableName(TableInfo.get(class1).getTableName()));
     if (!TextUtils.isEmpty(s))
     {
         class1.append(" WHERE ");
         class1.append(s);
     }
     return class1.toString();
 }
 public void display(ValueWriter w) throws IOException {
   w.append("#<jnull ").append(Util.nameType((Class) obj)).append('>');
 }