1 /*
2 * Copyright 2015 Data Archiving and Networked Services (an institute of
3 * Koninklijke Nederlandse Akademie van Wetenschappen), King's College London,
4 * Georg-August-Universitaet Goettingen Stiftung Oeffentlichen Rechts
5 *
6 * Licensed under the EUPL, Version 1.1 or – as soon they will be approved by
7 * the European Commission - subsequent versions of the EUPL (the "Licence");
8 * You may not use this work except in compliance with the Licence.
9 * You may obtain a copy of the Licence at:
10 *
11 * https://joinup.ec.europa.eu/software/page/eupl
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the Licence is distributed on an "AS IS" basis,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the Licence for the specific language governing
17 * permissions and limitations under the Licence.
18 */
19
20 package eu.ehri.project.persistence;
21
22
23 import java.util.Optional;
24
25 /**
26 * Class holding information about a create-or-update job. The item
27 * will either have been created, been updated, or remained unchanged.
28 */
29 public final class Mutation<T> {
30 private final T node;
31 private final MutationState state;
32 private final Optional<Bundle> prior;
33
34 public Mutation(T node, MutationState state, Optional<Bundle> prior) {
35 this.node = node;
36 this.state = state;
37 this.prior = prior;
38 }
39
40 public Mutation(T node, MutationState state) {
41 this(node, state, Optional.empty());
42 }
43
44 public Mutation(T node, MutationState state, Bundle bundle) {
45 this(node, state, Optional.ofNullable(bundle));
46 }
47
48 public T getNode() {
49 return node;
50 }
51
52 public Optional<Bundle> getPrior() {
53 return this.prior;
54 }
55
56 public MutationState getState() {
57 return state;
58 }
59
60 public boolean hasChanged() {
61 return state != MutationState.UNCHANGED;
62 }
63
64 public boolean created() {
65 return state == MutationState.CREATED;
66 }
67
68 public boolean updated() {
69 return state == MutationState.UPDATED;
70 }
71 }