Mercurial > dive4elements > river
comparison flys-client/src/main/java/de/intevation/flys/client/server/GetArtifactServiceImpl.java @ 221:f03c34bec364
Added a new service to query an artifact description.
flys-client/trunk@1666 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Tue, 12 Apr 2011 07:56:33 +0000 |
parents | |
children | 924da6695800 |
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220:35094660f91a | 221:f03c34bec364 |
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1 package de.intevation.flys.client.server; | |
2 | |
3 import org.w3c.dom.Document; | |
4 | |
5 import com.google.gwt.user.server.rpc.RemoteServiceServlet; | |
6 | |
7 import de.intevation.artifacts.common.ArtifactNamespaceContext; | |
8 import de.intevation.artifacts.common.utils.ClientProtocolUtils; | |
9 import de.intevation.artifacts.common.utils.XMLUtils; | |
10 | |
11 import de.intevation.artifacts.httpclient.exceptions.ConnectionException; | |
12 import de.intevation.artifacts.httpclient.http.HttpClient; | |
13 import de.intevation.artifacts.httpclient.http.HttpClientImpl; | |
14 import de.intevation.artifacts.httpclient.http.response.DocumentResponseHandler; | |
15 | |
16 import de.intevation.flys.client.shared.exceptions.ServerException; | |
17 import de.intevation.flys.client.shared.model.Artifact; | |
18 import de.intevation.flys.client.client.services.GetArtifactService; | |
19 | |
20 | |
21 /** | |
22 * This service provides a method that returns an artifact based on its | |
23 * identifier. | |
24 * | |
25 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> | |
26 */ | |
27 public class GetArtifactServiceImpl | |
28 extends RemoteServiceServlet | |
29 implements GetArtifactService | |
30 { | |
31 public static final String ERROR_DESCRIBE_ARTIFACT = | |
32 "error_describe_artifact"; | |
33 | |
34 public static final String XPATH_RESULT = "/art:result/text()"; | |
35 | |
36 public static final String OPERATION_FAILURE = "FAILED"; | |
37 | |
38 | |
39 public Artifact getArtifact(String serverUrl, String uuid, String hash) | |
40 throws ServerException | |
41 { | |
42 Document describe = ClientProtocolUtils.newDescribeDocument( | |
43 uuid, hash, true); | |
44 | |
45 HttpClient client = new HttpClientImpl(serverUrl); | |
46 | |
47 try { | |
48 Document description = (Document) client.describe( | |
49 new de.intevation.artifacts.httpclient.objects.Artifact( | |
50 uuid, hash), | |
51 describe, | |
52 new DocumentResponseHandler()); | |
53 | |
54 if (description == null) { | |
55 throw new ServerException(ERROR_DESCRIBE_ARTIFACT); | |
56 } | |
57 | |
58 String result = XMLUtils.xpathString( | |
59 description, | |
60 XPATH_RESULT, | |
61 ArtifactNamespaceContext.INSTANCE); | |
62 | |
63 if (result == null || !result.equals(OPERATION_FAILURE)) { | |
64 return (Artifact) new FLYSArtifactCreator().create(description); | |
65 } | |
66 } | |
67 catch (ConnectionException ce) { | |
68 System.err.println(ce.getLocalizedMessage()); | |
69 } | |
70 | |
71 throw new ServerException(ERROR_DESCRIBE_ARTIFACT); | |
72 } | |
73 } | |
74 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |