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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.proxy.frontend.opengauss.command.query.extended.bind;
19  
20  import lombok.RequiredArgsConstructor;
21  import org.apache.shardingsphere.db.protocol.opengauss.packet.command.query.extended.bind.OpenGaussComBatchBindPacket;
22  import org.apache.shardingsphere.db.protocol.packet.DatabasePacket;
23  import org.apache.shardingsphere.db.protocol.postgresql.packet.command.query.extended.bind.PostgreSQLBindCompletePacket;
24  import org.apache.shardingsphere.db.protocol.postgresql.packet.generic.PostgreSQLCommandCompletePacket;
25  import org.apache.shardingsphere.proxy.backend.session.ConnectionSession;
26  import org.apache.shardingsphere.proxy.frontend.command.executor.CommandExecutor;
27  import org.apache.shardingsphere.proxy.frontend.postgresql.command.query.PostgreSQLCommand;
28  import org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.PostgreSQLBatchedStatementsExecutor;
29  import org.apache.shardingsphere.proxy.frontend.postgresql.command.query.extended.PostgreSQLServerPreparedStatement;
30  import org.apache.shardingsphere.sql.parser.sql.common.statement.SQLStatement;
31  
32  import java.sql.SQLException;
33  import java.util.Arrays;
34  import java.util.Collection;
35  
36  /**
37   * Command batch bind executor for openGauss.
38   */
39  @RequiredArgsConstructor
40  public final class OpenGaussComBatchBindExecutor implements CommandExecutor {
41      
42      private final OpenGaussComBatchBindPacket packet;
43      
44      private final ConnectionSession connectionSession;
45      
46      @Override
47      public Collection<DatabasePacket> execute() throws SQLException {
48          connectionSession.getDatabaseConnectionManager().handleAutoCommit();
49          PostgreSQLServerPreparedStatement preparedStatement = connectionSession.getServerPreparedStatementRegistry().getPreparedStatement(packet.getStatementId());
50          int updateCount = new PostgreSQLBatchedStatementsExecutor(connectionSession, preparedStatement, packet.readParameterSets(preparedStatement.getParameterTypes())).executeBatch();
51          return Arrays.asList(PostgreSQLBindCompletePacket.getInstance(), createCommandComplete(preparedStatement.getSqlStatementContext().getSqlStatement(), updateCount));
52      }
53      
54      private PostgreSQLCommandCompletePacket createCommandComplete(final SQLStatement sqlStatement, final int updateCount) {
55          String sqlCommand = PostgreSQLCommand.valueOf(sqlStatement.getClass()).map(PostgreSQLCommand::getTag).orElse("");
56          return new PostgreSQLCommandCompletePacket(sqlCommand, updateCount);
57      }
58  }