public boolean getBoolean(int columnIndex) throws SQLException {
        checkState();

        return rs.getBoolean(columnIndex);
    }
Gets the value of the designated column in the current row
of this rowset's <code>ResultSet</code> object as
a <code>boolean</code>.

@param columnIndex the first column is 1, the second is 2, and so on
@return the column value; if the value is SQL <code>NULL</code>, the
value returned is <code>false</code>
@throws SQLException if (1) a database access error occurs
           or (2) this rowset does not have a currently valid connection,
           prepared statement, and result set
src/main/java/org/replicadb/rowset/sun/rowset/JdbcRowSetImpl.java