View Javadoc
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.backend.mysql.handler.admin.executor.sysvar.provider;
19  
20  import org.apache.shardingsphere.db.protocol.constant.DatabaseProtocolServerInfo;
21  import org.apache.shardingsphere.infra.database.core.type.DatabaseType;
22  import org.apache.shardingsphere.infra.spi.type.typed.TypedSPILoader;
23  import org.apache.shardingsphere.proxy.backend.mysql.handler.admin.executor.sysvar.MySQLSystemVariable;
24  import org.apache.shardingsphere.proxy.backend.mysql.handler.admin.executor.sysvar.MySQLSystemVariableValueProvider;
25  import org.apache.shardingsphere.proxy.backend.mysql.handler.admin.executor.sysvar.Scope;
26  import org.apache.shardingsphere.proxy.backend.session.ConnectionSession;
27  
28  /**
29   * MySQL version provider.
30   */
31  public final class VersionValueProvider implements MySQLSystemVariableValueProvider {
32      
33      @Override
34      public String get(final Scope scope, final ConnectionSession connectionSession, final MySQLSystemVariable variable) {
35          return DatabaseProtocolServerInfo.getProtocolVersion(connectionSession.getDefaultDatabaseName(), TypedSPILoader.getService(DatabaseType.class, "MySQL"));
36      }
37  }