this.rs = rs; this.extendedInfo = getExtendedFieldInfo(rs.c);
this.connection = connection;
    FBResultSetMetaData(XSQLVAR[] xsqlvars, FBResultSet rs) throws SQLException {        this.xsqlvars = xsqlvars;        this.rs = rs;        this.extendedInfo = getExtendedFieldInfo(rs.c);    }