1 | /** |
---|
2 | * This software is copyright (c) 2013-2016 by |
---|
3 | * - Institut fuer Deutsche Sprache (http://www.ids-mannheim.de) |
---|
4 | * This is free software. You can redistribute it |
---|
5 | * and/or modify it under the terms described in |
---|
6 | * the GNU General Public License v3 of which you |
---|
7 | * should have received a copy. Otherwise you can download |
---|
8 | * it from |
---|
9 | * |
---|
10 | * http://www.gnu.org/licenses/gpl-3.0.txt |
---|
11 | * |
---|
12 | * @copyright Institut fuer Deutsche Sprache (http://www.ids-mannheim.de) |
---|
13 | * |
---|
14 | * @license http://www.gnu.org/licenses/gpl-3.0.txt |
---|
15 | * GNU General Public License v3 |
---|
16 | */ |
---|
17 | package eu.clarin.sru.server.fcs.utils; |
---|
18 | |
---|
19 | import java.net.URI; |
---|
20 | import java.util.Collections; |
---|
21 | import java.util.List; |
---|
22 | |
---|
23 | import eu.clarin.sru.server.SRUException; |
---|
24 | import eu.clarin.sru.server.fcs.DataView; |
---|
25 | import eu.clarin.sru.server.fcs.EndpointDescription; |
---|
26 | import eu.clarin.sru.server.fcs.Layer; |
---|
27 | import eu.clarin.sru.server.fcs.ResourceInfo; |
---|
28 | |
---|
29 | |
---|
30 | /** |
---|
31 | * A very simple implementation of an endpoint description that is initialized |
---|
32 | * from static information supplied at construction time. Mostly used together |
---|
33 | * with {@link SimpleEndpointDescriptionParser}, but it is agnostic how the |
---|
34 | * static list of resource info records is generated. |
---|
35 | * |
---|
36 | * @see EndpointDescription |
---|
37 | * @see SimpleEndpointDescriptionParser |
---|
38 | */ |
---|
39 | public class SimpleEndpointDescription extends AbstractEndpointDescriptionBase { |
---|
40 | private final boolean pidCaseSensitive; |
---|
41 | private final List<ResourceInfo> entries; |
---|
42 | |
---|
43 | |
---|
44 | /** |
---|
45 | * Constructor. |
---|
46 | * |
---|
47 | * @param capabilities |
---|
48 | * a list of capabilities supported by this endpoint |
---|
49 | * @param supportedDataViews |
---|
50 | * a list of data views that are supported by this endpoint |
---|
51 | * @param supportedLayers |
---|
52 | * a list of layers supported for Advanced Search by this |
---|
53 | * endpoint or <code>null</code> |
---|
54 | * @param resources |
---|
55 | * a static list of resource info records |
---|
56 | * @param pidCaseSensitive |
---|
57 | * <code>true</code> if comparison of persistent identifiers |
---|
58 | * should be performed case-sensitive, <code>false</code> |
---|
59 | * otherwise |
---|
60 | */ |
---|
61 | public SimpleEndpointDescription(List<URI> capabilities, |
---|
62 | List<DataView> supportedDataViews, |
---|
63 | List<Layer> supportedLayers, |
---|
64 | List<ResourceInfo> resources, |
---|
65 | boolean pidCaseSensitive) { |
---|
66 | super(capabilities, supportedDataViews, supportedLayers); |
---|
67 | |
---|
68 | if (resources == null) { |
---|
69 | throw new NullPointerException("entries == null"); |
---|
70 | } |
---|
71 | this.entries = Collections.unmodifiableList(resources); |
---|
72 | this.pidCaseSensitive = pidCaseSensitive; |
---|
73 | } |
---|
74 | |
---|
75 | |
---|
76 | @Override |
---|
77 | public void destroy() { |
---|
78 | } |
---|
79 | |
---|
80 | |
---|
81 | @Override |
---|
82 | public List<ResourceInfo> getResourceList(String pid) throws SRUException { |
---|
83 | if (pid == null) { |
---|
84 | throw new NullPointerException("pid == null"); |
---|
85 | } |
---|
86 | if (pid.isEmpty()) { |
---|
87 | throw new IllegalArgumentException("pid is empty"); |
---|
88 | } |
---|
89 | if (!pidCaseSensitive) { |
---|
90 | pid = pid.toLowerCase(); |
---|
91 | } |
---|
92 | if (pid.equals(PID_ROOT)) { |
---|
93 | return entries; |
---|
94 | } else { |
---|
95 | ResourceInfo ri = findRecursive(entries, pid); |
---|
96 | if (ri != null) { |
---|
97 | return ri.getSubResources(); |
---|
98 | } |
---|
99 | } |
---|
100 | return null; |
---|
101 | } |
---|
102 | |
---|
103 | |
---|
104 | private ResourceInfo findRecursive(List<ResourceInfo> items, String pid) { |
---|
105 | if ((items != null) && !items.isEmpty()) { |
---|
106 | for (ResourceInfo item : items) { |
---|
107 | if (pidCaseSensitive) { |
---|
108 | if (pid.equals(item.getPid())) { |
---|
109 | return item; |
---|
110 | } |
---|
111 | } else { |
---|
112 | if (pid.equalsIgnoreCase(item.getPid())) { |
---|
113 | return item; |
---|
114 | } |
---|
115 | } |
---|
116 | if (item.hasSubResources()) { |
---|
117 | ResourceInfo ri = |
---|
118 | findRecursive(item.getSubResources(), pid); |
---|
119 | if (ri != null) { |
---|
120 | return ri; |
---|
121 | } |
---|
122 | } |
---|
123 | } // for |
---|
124 | } |
---|
125 | return null; |
---|
126 | } |
---|
127 | |
---|
128 | } // class SimpleEndpointDescription |
---|