1 /**
2 * This file Copyright (c) 2018 Magnolia International
3 * Ltd. (http://www.magnolia-cms.com). All rights reserved.
4 *
5 *
6 * This file is dual-licensed under both the Magnolia
7 * Network Agreement and the GNU General Public License.
8 * You may elect to use one or the other of these licenses.
9 *
10 * This file is distributed in the hope that it will be
11 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
12 * implied warranty of MERCHANTABILITY or FITNESS FOR A
13 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
14 * Redistribution, except as permitted by whichever of the GPL
15 * or MNA you select, is prohibited.
16 *
17 * 1. For the GPL license (GPL), you can redistribute and/or
18 * modify this file under the terms of the GNU General
19 * Public License, Version 3, as published by the Free Software
20 * Foundation. You should have received a copy of the GNU
21 * General Public License, Version 3 along with this program;
22 * if not, write to the Free Software Foundation, Inc., 51
23 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
24 *
25 * 2. For the Magnolia Network Agreement (MNA), this file
26 * and the accompanying materials are made available under the
27 * terms of the MNA which accompanies this distribution, and
28 * is available at http://www.magnolia-cms.com/mna.html
29 *
30 * Any modifications to this file must keep this entire header
31 * intact.
32 *
33 */
34 package info.magnolia.config.source.yaml;
35
36 import info.magnolia.config.source.yaml.construct.WrapMetadata;
37
38 import java.util.HashMap;
39 import java.util.Map;
40 import java.util.function.Consumer;
41
42 /**
43 * Consumer processes {@link info.magnolia.config.source.yaml.construct.WrapMetadata.Metadata Metadatas}.
44 */
45 @FunctionalInterface
46 interface YamlMetadataConsumer extends Consumer<WrapMetadata.Metadata> {
47
48 void process(WrapMetadata.Metadata metadata);
49
50 @Override
51 default void accept(WrapMetadata.Metadata metadata) {
52 process(metadata);
53 }
54
55 /**
56 * Default implementation of {@link YamlMetadataConsumer} processes
57 * {@link info.magnolia.config.source.yaml.construct.WrapMetadata.Metadata Metadatas} by delegating to consumers which
58 * are registered with an ID. Delegation happens if the registered ID is in {@link info.magnolia.config.source.yaml.construct.WrapMetadata.Metadata#keySet MetadataKey}.
59 */
60 class Nested implements YamlMetadataConsumer {
61
62 private final Map<String, YamlMetadataConsumer> delegates;
63
64 Nested(Map<String, YamlMetadataConsumer> delegates) {
65 this.delegates = delegates;
66 }
67
68 static Nested withSingleDelegate(String delegateId, YamlMetadataConsumer delegate) {
69 HashMap<String, YamlMetadataConsumer> map = new HashMap<>();
70 map.put(delegateId, delegate);
71 return new Nested(map);
72 }
73
74 @Override
75 public void process(WrapMetadata.Metadata metadata) {
76 metadata.forEach((metadataKey, data) -> delegates.get(metadataKey).process(WrapMetadata.Metadata.of(data)));
77 }
78 }
79 }