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annotate flys-client/src/main/java/de/intevation/flys/client/server/GetArtifactServiceImpl.java @ 4515:17d896822d70

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Added methods to sediment load object to check fractions.
author Raimund Renkert <rrenkert@intevation.de>
date Wed, 14 Nov 2012 17:02:51 +0100
parents bc06a671ef60
children
rev   line source
221
f03c34bec364 Added a new service to query an artifact description.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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1 package de.intevation.flys.client.server;
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2
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3 import org.w3c.dom.Document;
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4
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5 import org.apache.log4j.Logger;
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6
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7 import com.google.gwt.user.server.rpc.RemoteServiceServlet;
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8
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9 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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10 import de.intevation.artifacts.common.utils.ClientProtocolUtils;
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11 import de.intevation.artifacts.common.utils.XMLUtils;
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12
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13 import de.intevation.artifacts.httpclient.exceptions.ConnectionException;
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14 import de.intevation.artifacts.httpclient.http.HttpClient;
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15 import de.intevation.artifacts.httpclient.http.HttpClientImpl;
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16 import de.intevation.artifacts.httpclient.http.response.DocumentResponseHandler;
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17
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18 import de.intevation.flys.client.shared.exceptions.ServerException;
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19 import de.intevation.flys.client.shared.model.Artifact;
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20 import de.intevation.flys.client.client.services.GetArtifactService;
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21
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22
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23 /**
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24 * This service provides a method that returns an artifact based on its
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25 * identifier.
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26 *
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27 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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28 */
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29 public class GetArtifactServiceImpl
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30 extends RemoteServiceServlet
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31 implements GetArtifactService
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32 {
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33 private static final Logger logger =
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34 Logger.getLogger(GetArtifactServiceImpl.class);
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35
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36
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37 public static final String ERROR_DESCRIBE_ARTIFACT =
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38 "error_describe_artifact";
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39
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40 public static final String XPATH_RESULT = "/art:result/text()";
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41
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42 public static final String OPERATION_FAILURE = "FAILED";
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43
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44
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45 public Artifact getArtifact(
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46 String locale,
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47 String uuid,
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48 String hash)
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49 throws ServerException
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50 {
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51 logger.info("GetArtifactServiceImpl.getArtifact");
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52
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53 String url = getServletContext().getInitParameter("server-url");
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54
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55 Document describe = ClientProtocolUtils.newDescribeDocument(
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56 uuid, hash, true);
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57
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58 HttpClient client = new HttpClientImpl(url, locale);
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59
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60 try {
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61 Document description = (Document) client.describe(
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62 new de.intevation.artifacts.httpclient.objects.Artifact(
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63 uuid, hash),
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64 describe,
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65 new DocumentResponseHandler());
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66
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67 if (description == null) {
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68 throw new ServerException(ERROR_DESCRIBE_ARTIFACT);
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69 }
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70
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71 String result = XMLUtils.xpathString(
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72 description,
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73 XPATH_RESULT,
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74 ArtifactNamespaceContext.INSTANCE);
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75
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76 if (result == null || !result.equals(OPERATION_FAILURE)) {
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77 return (Artifact) new FLYSArtifactCreator().create(description);
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78 }
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79 }
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80 catch (ConnectionException ce) {
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81 logger.error(ce, ce);
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82 }
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83
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84 throw new ServerException(ERROR_DESCRIBE_ARTIFACT);
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85 }
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86 }
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87 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org