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.mode.spi;
19
20 import org.apache.shardingsphere.infra.spi.type.typed.TypedSPI;
21
22 import java.util.List;
23
24 /**
25 * Persist repository.
26 */
27 public interface PersistRepository extends TypedSPI {
28
29 /**
30 * Path separator.
31 */
32 String PATH_SEPARATOR = "/";
33
34 /**
35 * Get value from registry center directly.
36 *
37 * @param key key
38 * @return value
39 */
40 String getDirectly(String key);
41
42 /**
43 * Get names of sub-node.
44 *
45 * @param key key of data
46 * @return sub-node names
47 */
48 List<String> getChildrenKeys(String key);
49
50 /**
51 * Judge node is exist or not.
52 *
53 * @param key key
54 * @return node is exist or not
55 */
56 boolean isExisted(String key);
57
58 /**
59 * Persist data.
60 *
61 * @param key key of data
62 * @param value value of data
63 */
64 void persist(String key, String value);
65
66 /**
67 * Update data.
68 *
69 * @param key key
70 * @param value value
71 */
72 void update(String key, String value);
73
74 /**
75 * Delete node.
76 *
77 * @param key key of data
78 */
79 void delete(String key);
80
81 /**
82 * Close.
83 */
84 void close();
85 }