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;
19
20 import org.apache.shardingsphere.proxy.backend.session.ConnectionSession;
21
22 /**
23 * System variable value provider for MySQL.
24 */
25 public interface MySQLSystemVariableValueProvider {
26
27 MySQLSystemVariableValueProvider DEFAULT_PROVIDER = new MySQLSystemVariableValueProvider() {
28 };
29
30 /**
31 * Get variable.
32 *
33 * @param scope scope
34 * @param connectionSession connection session
35 * @param variable variable
36 * @return value of variable
37 */
38 default String get(final Scope scope, final ConnectionSession connectionSession, final MySQLSystemVariable variable) {
39 return variable.getDefaultValue();
40 }
41 }