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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.infra.executor.sql.prepare.raw;
19  
20  import org.apache.shardingsphere.infra.executor.kernel.model.ExecutionGroup;
21  import org.apache.shardingsphere.infra.executor.sql.context.ExecutionUnit;
22  import org.apache.shardingsphere.infra.executor.sql.execute.engine.ConnectionMode;
23  import org.apache.shardingsphere.infra.executor.sql.execute.engine.raw.RawSQLExecutionUnit;
24  import org.apache.shardingsphere.infra.executor.sql.prepare.AbstractExecutionPrepareEngine;
25  import org.apache.shardingsphere.infra.rule.ShardingSphereRule;
26  
27  import java.sql.SQLException;
28  import java.util.Collection;
29  import java.util.List;
30  import java.util.stream.Collectors;
31  
32  /**
33   * Raw execution prepare engine.
34   */
35  public final class RawExecutionPrepareEngine extends AbstractExecutionPrepareEngine<RawSQLExecutionUnit> {
36      
37      public RawExecutionPrepareEngine(final int maxConnectionsSizePerQuery, final Collection<ShardingSphereRule> rules) {
38          super(maxConnectionsSizePerQuery, rules);
39      }
40      
41      @Override
42      protected List<ExecutionGroup<RawSQLExecutionUnit>> group(final String dataSourceName, final int connectionOffset, final List<List<ExecutionUnit>> executionUnitGroups,
43                                                                final ConnectionMode connectionMode) throws SQLException {
44          return executionUnitGroups.stream().map(each -> createExecutionGroup(each, connectionMode)).collect(Collectors.toList());
45      }
46      
47      private ExecutionGroup<RawSQLExecutionUnit> createExecutionGroup(final List<ExecutionUnit> executionUnitGroup, final ConnectionMode connectionMode) {
48          return new ExecutionGroup<>(executionUnitGroup.stream().map(each -> new RawSQLExecutionUnit(each, connectionMode)).collect(Collectors.toList()));
49      }
50  }