1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package org.apache.shardingsphere.db.protocol.mysql.packet.command.query.binary.prepare;
19
20 import lombok.RequiredArgsConstructor;
21 import org.apache.shardingsphere.db.protocol.mysql.packet.MySQLPacket;
22 import org.apache.shardingsphere.db.protocol.mysql.payload.MySQLPacketPayload;
23
24 /**
25 * COM_STMT_PREPARE_OK packet for MySQL.
26 *
27 * @see <a href="https://dev.mysql.com/doc/dev/mysql-server/latest/page_protocol_com_stmt_prepare.html#sect_protocol_com_stmt_prepare_response_ok">COM_STMT_PREPARE_OK</a>
28 */
29 @RequiredArgsConstructor
30 public final class MySQLComStmtPrepareOKPacket extends MySQLPacket {
31
32 private static final int STATUS = 0x00;
33
34 private final int statementId;
35
36 private final int columnCount;
37
38 private final int parameterCount;
39
40 private final int warningCount;
41
42 @Override
43 protected void write(final MySQLPacketPayload payload) {
44 payload.writeInt1(STATUS);
45 payload.writeInt4(statementId);
46 // TODO Column Definition Block should be added in future when the meta data of the columns is cached.
47 payload.writeInt2(columnCount);
48 payload.writeInt2(parameterCount);
49 payload.writeReserved(1);
50 payload.writeInt2(warningCount);
51 }
52 }