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annotate flys-client/src/main/java/de/intevation/flys/client/server/DescribeCollectionServiceImpl.java @ 4128:11c589d68f13

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Fix for NPE in FLYSWorkspace.bringUp() #933
author Christian Lins <christian.lins@intevation.de>
date Sun, 14 Oct 2012 10:15:50 +0200
parents bc06a671ef60
children
rev   line source
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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.utils.ClientProtocolUtils;
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10
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11 import de.intevation.artifacts.httpclient.exceptions.ConnectionException;
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12 import de.intevation.artifacts.httpclient.http.HttpClient;
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13 import de.intevation.artifacts.httpclient.http.HttpClientImpl;
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14 import de.intevation.artifacts.httpclient.http.response.DocumentResponseHandler;
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16 import de.intevation.flys.client.shared.exceptions.ServerException;
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17 import de.intevation.flys.client.shared.model.Collection;
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19 import de.intevation.flys.client.client.services.DescribeCollectionService;
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20
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21
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22 /**
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23 * This service implements a method that queries the DESCRIBE document of a
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24 * specific collection and returns a Collection object with the information of
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25 * the document.
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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 DescribeCollectionServiceImpl
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30 extends RemoteServiceServlet
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31 implements DescribeCollectionService
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32 {
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33 private static final Logger logger =
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34 Logger.getLogger(DescribeCollectionServiceImpl.class);
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35
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37 /** The error message key that is thrown if an error occured while
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38 * describe() a Collection.*/
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39 public static final String ERROR_DESCRIBE_COLLECTION =
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40 "error_describe_collection";
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41
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43 public Collection describe(String uuid, String locale)
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44 throws ServerException
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45 {
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46 logger.info("DescribeCollectionServiceImpl.describe");
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48 String url = getServletContext().getInitParameter("server-url");
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49
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50 Document describe = ClientProtocolUtils.newDescribeCollectionDocument(
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51 uuid);
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52
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53 HttpClient client = new HttpClientImpl(url, locale);
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54
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55 try {
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56 Document response = (Document) client.doCollectionAction(
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57 describe, uuid, new DocumentResponseHandler());
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58
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59 Collection c = CollectionHelper.parseCollection(response);
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60
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61 if (c == null) {
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62 throw new ServerException(ERROR_DESCRIBE_COLLECTION);
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63 }
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64
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65 logger.debug("Collection successfully parsed.");
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66
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67 return c;
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68 }
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69 catch (ConnectionException ce) {
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70 logger.error(ce, ce);
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71 }
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72
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73 throw new ServerException(ERROR_DESCRIBE_COLLECTION);
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74 }
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75 }
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76 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org