Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/server/MetaDataServiceImpl.java @ 282:e92f7ef455d6

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Show rivers as links instead of a combobox. flys-client/trunk@1911 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Raimund Renkert <raimund.renkert@intevation.de>
date Thu, 12 May 2011 14:59:18 +0000
parents f33af25b7490
children 0fa8bf8a2295
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 java.util.List;
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4 import java.util.ArrayList;
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5
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6 import org.w3c.dom.Document;
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7 import org.w3c.dom.Element;
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8 import org.w3c.dom.Node;
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9 import org.w3c.dom.NodeList;
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10
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11 import com.google.gwt.user.server.rpc.RemoteServiceServlet;
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12
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13 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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14
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15 import de.intevation.artifacts.common.utils.XMLUtils;
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16
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17 import de.intevation.flys.client.shared.exceptions.ServerException;
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18
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19 import de.intevation.flys.client.client.services.MetaDataService;
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20
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21 import de.intevation.artifacts.httpclient.exceptions.ConnectionException;
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22
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23 import de.intevation.artifacts.httpclient.http.HttpClient;
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24 import de.intevation.artifacts.httpclient.http.HttpClientImpl;
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26 import de.intevation.flys.client.shared.model.DataCageTree;
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27 import de.intevation.flys.client.shared.model.DataCageNode;
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28
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29 public class MetaDataServiceImpl
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30 extends RemoteServiceServlet
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31 implements MetaDataService
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32 {
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33 public static final String ERROR_NO_META_DATA_FOUND =
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34 "error_no_meta_data_found";
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35
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36 public DataCageTree getMetaData(String url, String locale, String river)
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37 throws ServerException
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38 {
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39 System.out.println("MetaDataService.getDistanceInfo");
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40
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41 Document doc = XMLUtils.newDocument();
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42
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43 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator(
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44 doc,
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45 ArtifactNamespaceContext.NAMESPACE_URI,
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46 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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47
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48 Element riverEl = ec.create("river");
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49
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50 riverEl.setTextContent(river);
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51
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52 doc.appendChild(riverEl);
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53
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54 HttpClient client = new HttpClientImpl(url, locale);
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55
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56 try {
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57 return convert(client.callService(url, "metadata", doc));
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58 }
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59 catch (ConnectionException ce) {
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60 System.err.println(ce.getLocalizedMessage());
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61 }
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62
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63 throw new ServerException(ERROR_NO_META_DATA_FOUND);
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64 }
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65
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66 protected static DataCageNode convert(Node node) {
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67 String name = node.getLocalName();
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68 DataCageNode dvn = new DataCageNode(name);
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69 NodeList children = node.getChildNodes();
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70 for (int i = 0, N = children.getLength(); i < N; ++i) {
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71 dvn.addChild(convert(children.item(i)));
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72 }
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73 return dvn;
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74 }
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75
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76 protected static DataCageTree convert(Document document) {
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77 ArrayList<DataCageNode> roots = new ArrayList<DataCageNode>();
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78 NodeList nodes = document.getChildNodes();
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79 for (int i = 0, N = nodes.getLength(); i < N; ++i) {
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80 Node node = nodes.item(i);
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81 if (node.getNodeType() == Node.ELEMENT_NODE) {
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82 roots.add(convert(nodes.item(i)));
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83 }
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84 }
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85 return new DataCageTree(roots.get(0));
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86 }
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87 }
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88 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org