DDL and DML

Question

hey
the method executeQuery will return ResultSet then i can use this resultSet to show result but with this method i can't excute the ddl commands (del , insert,..etc)
executeUpdate can do both , but will not return ResultSet that i use to show result...
how can i see the results if i use resultUpdate ?
do i need to creat 2 different methods one to select and one for ddl , or i can use one that will do both ?
thx

Answer 1

hey
the method executeQuery will return ResultSet then i
can use this resultSet to show result but with this
method i can't excute the ddl commands (del ,
insert,..etc)Right.
>
executeUpdate can do both , No, just INSERT/UPDATE/DELETE and DML statements.
but will not return
ResultSet that i use to show result...If a tree falls in the forest...If you can't get your ResultSet, the method can't do SELECTs.
executeUpdate can't do both, but execute can. Read more of the javadocs.
how can i see the results if i use resultUpdate ?
do i need to creat 2 different methods one to select
and one for ddl , or i can use one that will do both
?Here's how I've done it (just the method, not the entire class):
     * Execute ANY SQL statement
     * @param SQL statement to execute
     * @returns list of row values if a ResultSet is returned,
     * OR an altered row count object if not
     * @throws SQLException if the query fails
    public Object executeSQL(final String sql) throws SQLException
        Object returnValue;
        Statement statement = null;
        ResultSet rs = null;
        try
            statement = this.connection.createStatement();
            boolean hasResultSet    = statement.execute(sql);
            if (hasResultSet)
                rs                      = statement.getResultSet();
                ResultSetMetaData meta  = rs.getMetaData();
                int numColumns          = meta.getColumnCount();
                List rows               = new ArrayList();
                while (rs.next())
                    Map thisRow = new LinkedHashMap();
                    for (int i = 1; i <= numColumns; ++i)
                        String columnName   = meta.getColumnName(i);
                        Object value        = rs.getObject(columnName);
                        thisRow.put(columnName, value);
                    rows.add(thisRow);
                returnValue = rows;
        else
            int updateCount = statement.getUpdateCount();
            returnValue     = new Integer(updateCount);
        finally
            close(rs);
            close(statement);
        return returnValue;
    }%