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.proxy.backend.mysql.handler.admin.executor.sysvar.Scope;
21 import org.apache.shardingsphere.proxy.backend.mysql.handler.admin.executor.sysvar.MySQLSystemVariable;
22 import org.apache.shardingsphere.proxy.backend.mysql.handler.admin.executor.sysvar.MySQLSystemVariableValueProvider;
23 import org.apache.shardingsphere.proxy.backend.session.ConnectionSession;
24
25 /**
26 * Transaction read only.
27 */
28 public final class TransactionReadOnlyValueProvider implements MySQLSystemVariableValueProvider {
29
30 @Override
31 public String get(final Scope scope, final ConnectionSession connectionSession, final MySQLSystemVariable variable) {
32 if (Scope.GLOBAL == scope) {
33 return variable.getDefaultValue();
34 }
35 return connectionSession.isReadOnly() ? "1" : "0";
36 }
37 }