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.distsql.handler.engine.update.rdl.rule.engine.database;
19
20 import org.apache.shardingsphere.distsql.statement.rdl.rule.database.DatabaseRuleDefinitionStatement;
21 import org.apache.shardingsphere.infra.config.rule.RuleConfiguration;
22 import org.apache.shardingsphere.infra.metadata.database.ShardingSphereDatabase;
23 import org.apache.shardingsphere.infra.metadata.version.MetaDataVersion;
24
25 import java.util.Collection;
26
27 /**
28 * Database rule operator.
29 */
30 public interface DatabaseRuleOperator {
31
32 /**
33 * Operate rule change.
34 *
35 * @param sqlStatement SQL statement
36 * @param database database
37 * @param currentRuleConfig current rule configuration
38 * @return meta data versions
39 */
40 Collection<MetaDataVersion> operate(DatabaseRuleDefinitionStatement sqlStatement, ShardingSphereDatabase database, RuleConfiguration currentRuleConfig);
41 }