2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
21 package org.openecomp.mso.bpmn.core;
23 import java.io.Serializable;
24 import java.util.HashMap;
26 import java.util.stream.Collectors;
29 * An object that stores data for rollbacks. Data is organized by type. A
30 * type is simply a string identifier. Multiple types of data may be stored
31 * in the same object for separate rollback operations.
33 public class RollbackData implements Serializable {
35 private static final long serialVersionUID = 1L;
37 private Map<String, Map<String, Serializable>> dictionary =
41 * Returns true if the specified type is stored in this object.
43 * @param type the data type
45 public boolean hasType(String type) {
46 return dictionary.containsKey(type);
50 * Stores a single item.
52 * @param type the data type
54 * @param value the value
56 public void put(String type, String key, String value) {
57 Map<String, Serializable> mapForType = dictionary
58 .computeIfAbsent(type, k -> new HashMap<>());
60 mapForType.put(key, value);
66 * @param type the data type
68 * @return the item or null if there is no item for the specified type and key
70 public Serializable get(String type, String key) {
71 Map<String, Serializable> mapForType = dictionary.get(type);
73 if (mapForType == null) {
77 return mapForType.get(key);
81 * Gets a map containing all items associated with the specified data type.
83 * @param type the data type
84 * @return a map, or null if there are no items associated with the specified data type
86 public Map<String, Serializable> get(String type) {
87 return dictionary.get(type);
91 * Returns a string representation of this object.
94 public String toString() {
95 return dictionary.entrySet().stream().map(entry -> entry.getKey() + entry.getValue())
96 .collect(Collectors.joining(",", "[", "]"));