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.database.core.metadata.database.system;
19
20 import lombok.RequiredArgsConstructor;
21 import org.apache.shardingsphere.infra.database.core.spi.DatabaseTypedSPILoader;
22 import org.apache.shardingsphere.infra.database.core.type.DatabaseType;
23
24 import java.util.Collection;
25 import java.util.Collections;
26 import java.util.Map;
27
28 /**
29 * System database.
30 */
31 @RequiredArgsConstructor
32 public final class SystemDatabase {
33
34 private final DatabaseType databaseType;
35
36 /**
37 * Get system database schema map.
38 *
39 * @return system database schema map
40 */
41 public Map<String, Collection<String>> getSystemDatabaseSchemaMap() {
42 return DatabaseTypedSPILoader.findService(DialectSystemDatabase.class, databaseType).map(DialectSystemDatabase::getSystemDatabaseSchemaMap).orElse(Collections.emptyMap());
43 }
44
45 /**
46 * Get system schemas.
47 *
48 * @return system schemas
49 */
50 public Collection<String> getSystemSchemas() {
51 return DatabaseTypedSPILoader.findService(DialectSystemDatabase.class, databaseType).map(DialectSystemDatabase::getSystemSchemas).orElse(Collections.emptyList());
52 }
53 }