Mercurial > dive4elements > river
comparison flys-client/src/main/java/de/intevation/flys/client/server/AddArtifactServiceImpl.java @ 69:4bdb18e5f484
Added a service to add artifacts to collections.
flys-client/trunk@1571 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
---|---|
date | Fri, 25 Mar 2011 11:37:36 +0000 |
parents | |
children | c8cd1b918901 |
comparison
equal
deleted
inserted
replaced
68:157f7bea6299 | 69:4bdb18e5f484 |
---|---|
1 package de.intevation.flys.client.server; | |
2 | |
3 import java.util.ArrayList; | |
4 import java.util.List; | |
5 | |
6 import javax.xml.xpath.XPathConstants; | |
7 | |
8 import org.w3c.dom.Document; | |
9 import org.w3c.dom.Node; | |
10 import org.w3c.dom.NodeList; | |
11 | |
12 import com.google.gwt.user.server.rpc.RemoteServiceServlet; | |
13 | |
14 import de.intevation.artifacts.common.ArtifactNamespaceContext; | |
15 import de.intevation.artifacts.common.utils.ClientProtocolUtils; | |
16 import de.intevation.artifacts.common.utils.XMLUtils; | |
17 | |
18 import de.intevation.artifacts.httpclient.exceptions.ConnectionException; | |
19 import de.intevation.artifacts.httpclient.http.HttpClient; | |
20 import de.intevation.artifacts.httpclient.http.HttpClientImpl; | |
21 import de.intevation.artifacts.httpclient.http.response.DocumentResponseHandler; | |
22 | |
23 import de.intevation.flys.client.shared.model.Artifact; | |
24 import de.intevation.flys.client.shared.model.Collection; | |
25 import de.intevation.flys.client.shared.model.CollectionItem; | |
26 import de.intevation.flys.client.shared.model.DefaultCollection; | |
27 import de.intevation.flys.client.shared.model.DefaultCollectionItem; | |
28 import de.intevation.flys.client.shared.model.DefaultOutputMode; | |
29 import de.intevation.flys.client.shared.model.OutputMode; | |
30 import de.intevation.flys.client.client.services.AddArtifactService; | |
31 | |
32 | |
33 /** | |
34 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> | |
35 */ | |
36 public class AddArtifactServiceImpl | |
37 extends RemoteServiceServlet | |
38 implements AddArtifactService | |
39 { | |
40 public Collection add(Collection collection, Artifact artifact, String url) { | |
41 System.out.println("AddArtifactServiceImpl - add()"); | |
42 | |
43 Document add = ClientProtocolUtils.newAddArtifactDocument( | |
44 artifact.getUuid(), null); | |
45 | |
46 HttpClient client = new HttpClientImpl(url); | |
47 | |
48 try { | |
49 Document response = (Document) client.doCollectionAction( | |
50 add, collection.identifier(), new DocumentResponseHandler()); | |
51 | |
52 Collection c = parseCollection(response); | |
53 | |
54 if (c == null) { | |
55 throw new NullPointerException("No collection returned."); | |
56 } | |
57 | |
58 return c; | |
59 } | |
60 catch (ConnectionException ce) { | |
61 System.err.println(ce.getLocalizedMessage()); | |
62 } | |
63 | |
64 return null; | |
65 } | |
66 | |
67 | |
68 /** | |
69 * This method takes the DESCRIBE document of the Collections describe() | |
70 * operation and extracts the information about the collection itself and | |
71 * the collection items. | |
72 * | |
73 * @param description The DESCRIBE document of the Collections describe() | |
74 * operation. | |
75 * | |
76 * @return a Collection with CollectionItems. | |
77 */ | |
78 protected Collection parseCollection(Document description) { | |
79 System.out.println("AddArtifactServiceImpl.parseCollection"); | |
80 | |
81 if (description == null) { | |
82 System.err.println("The DESCRIBE of the Collection is null!"); | |
83 return null; | |
84 } | |
85 | |
86 String uuid = XMLUtils.xpathString( | |
87 description, | |
88 "art:artifact-collection/@art:uuid", | |
89 ArtifactNamespaceContext.INSTANCE); | |
90 | |
91 if (uuid == null || uuid.equals("")) { | |
92 System.err.println("Found an invalid Collection!"); | |
93 return null; | |
94 } | |
95 | |
96 Collection c = new DefaultCollection(uuid); | |
97 | |
98 NodeList items = (NodeList) XMLUtils.xpath( | |
99 description, | |
100 "art:artifact-collection/art:artifacts/art:artifact", | |
101 XPathConstants.NODESET, | |
102 ArtifactNamespaceContext.INSTANCE); | |
103 | |
104 if (items == null || items.getLength() == 0) { | |
105 System.out.println("No collection item found for this collection."); | |
106 | |
107 return c; | |
108 } | |
109 | |
110 int size = items.getLength(); | |
111 | |
112 for (int i = 0; i < size; i++) { | |
113 CollectionItem item = parseCollectionItem(items.item(i)); | |
114 | |
115 if (item != null) { | |
116 c.addItem(item); | |
117 } | |
118 } | |
119 | |
120 System.out.println( | |
121 "Found " + c.getItemLength() + " collection items " + | |
122 "for the Collection '" + c.identifier() + "'."); | |
123 | |
124 return c; | |
125 } | |
126 | |
127 | |
128 /** | |
129 * This method extracts the CollectionItem from <i>node</i> with its output | |
130 * modes. The output modes are parsed using the parseOutputModes() method. | |
131 * | |
132 * @param node A node that contains information about a CollectionItem. | |
133 * | |
134 * @return a CollectionItem. | |
135 */ | |
136 protected CollectionItem parseCollectionItem(Node node) { | |
137 System.out.println("AddArtifactServiceImpl.parseCollectionItem"); | |
138 | |
139 if (node == null) { | |
140 System.err.println("The node for parsing CollectionItem is null!"); | |
141 return null; | |
142 } | |
143 | |
144 String uuid = XMLUtils.xpathString( | |
145 node, "@art:uuid", ArtifactNamespaceContext.INSTANCE); | |
146 | |
147 if (uuid == null || uuid.equals("")) { | |
148 System.err.println("Found an invalid CollectionItem!"); | |
149 } | |
150 | |
151 Node outputmodes = (Node) XMLUtils.xpath( | |
152 node, | |
153 "art:outputmodes", | |
154 XPathConstants.NODE, | |
155 ArtifactNamespaceContext.INSTANCE); | |
156 | |
157 List<OutputMode> modes = parseOutputModes(outputmodes); | |
158 | |
159 return new DefaultCollectionItem(uuid, modes); | |
160 } | |
161 | |
162 | |
163 /** | |
164 * This method extracts the OutputModes available for a specific | |
165 * CollectionItem and returns them as list. | |
166 * | |
167 * @param node The root node of the outputmodes list. | |
168 * | |
169 * @return a list of OutputModes. | |
170 */ | |
171 protected List<OutputMode> parseOutputModes(Node node) { | |
172 System.out.println("AddArtifactServiceImpl.parseOutputModes"); | |
173 | |
174 if (node == null) { | |
175 System.err.println("The node for parsing OutputModes is null!"); | |
176 return null; | |
177 } | |
178 | |
179 NodeList list = (NodeList) XMLUtils.xpath( | |
180 node, | |
181 "art:output", | |
182 XPathConstants.NODESET, | |
183 ArtifactNamespaceContext.INSTANCE); | |
184 | |
185 if (list == null || list.getLength() == 0) { | |
186 System.err.println("No outputmode nodes found!"); | |
187 return null; | |
188 } | |
189 | |
190 int size = list.getLength(); | |
191 | |
192 List<OutputMode> modes = new ArrayList<OutputMode>(size); | |
193 | |
194 for (int i = 0; i < size; i++) { | |
195 Node tmp = list.item(i); | |
196 String name = XMLUtils.xpathString( | |
197 tmp, "@art:name", ArtifactNamespaceContext.INSTANCE); | |
198 String desc = XMLUtils.xpathString( | |
199 tmp, "@art:description", ArtifactNamespaceContext.INSTANCE); | |
200 String mime = XMLUtils.xpathString( | |
201 tmp, "@art:mime-type", ArtifactNamespaceContext.INSTANCE); | |
202 | |
203 if (name == null || name.equals("")) { | |
204 System.err.println("Found an invalid output mode."); | |
205 | |
206 continue; | |
207 } | |
208 | |
209 // TODO Parse Facets | |
210 | |
211 modes.add(new DefaultOutputMode(name, desc, mime)); | |
212 } | |
213 | |
214 return modes; | |
215 } | |
216 } | |
217 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |