/* * Copyright (c) 2013, OpenCloudDB/MyCAT and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software;Designed and Developed mainly by many Chinese * opensource volunteers. you can redistribute it and/or modify it under the * terms of the GNU General Public License version 2 only, as published by the * Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Any questions about this component can be directed to it's project Web address * https://code.google.com/p/opencloudb/. * */ package org.opencloudb.net.postgres; /** * <pre> * RowDescription (B) * Byte1('T') Identifies the message as a row description. * Int32 Length of message contents in bytes, including self. * Int16 Specifies the number of fields in a row (can be zero). Then, for * each field,there is the following: String The field name. * Int32 If the field can be identified as a column of a specific table, * the object ID of the table; otherwise zero. * Int16 If the field can be identified as a column of a specific table, the * attribute number of the column; otherwise zero. * Int32 The object ID of the field's data type. * Int16 The data type size (see pg_type.typlen). Note that negative values * denote variable-width types. * Int32 The type modifier (see pg_attribute.atttypmod). The meaning of the * modifier is type-specific. * Int16 The format code being used for the field. Currently will be zero * (text) or one (binary). In a RowDescription returned from the * statement variant of Describe, the format code is not yet known and * will always be zero. * </pre> * * @author mycat */ public class RowDescription extends PostgresPacket { }