Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/RiverService.java @ 314:aeeb9054b7cf

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Acquire/release sessions in services to avoid db connection leaks. flys-artifacts/trunk@1699 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Thu, 14 Apr 2011 13:45:50 +0000
parents d6197a05a87c
children 4aa078e28cfd
rev   line source
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888e3b1dcdd9 Added a RiverService (/service/rivers) that retrieves a list of provided rivers.
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1 package de.intevation.flys.artifacts.services;
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2
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3 import java.util.List;
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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 org.w3c.dom.Document;
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8 import org.w3c.dom.Element;
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9
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10 import de.intevation.artifacts.CallMeta;
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11
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12 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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13 import de.intevation.artifacts.common.utils.XMLUtils;
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14
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15 import de.intevation.artifactdatabase.DefaultService;
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16
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17 import de.intevation.flys.model.River;
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18
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19 import de.intevation.flys.artifacts.model.RiverFactory;
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20 import de.intevation.flys.artifacts.model.SessionHolder;
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21
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22 import org.hibernate.Session;
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23
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24 /**
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25 * This service provides information about the supported rivers by this
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26 * application.
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27 *
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28 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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29 */
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30 public class RiverService extends DefaultService {
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31
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32 /** The logger used in this service.*/
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33 private static Logger logger = Logger.getLogger(RiverService.class);
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34
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35
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36 /**
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37 * The default constructor.
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38 */
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39 public RiverService() {
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40 }
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41
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42
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43 public Document process(
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44 Document data,
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45 Object globalContext,
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46 CallMeta callMeta)
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47 {
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48 logger.debug("RiverService.process");
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49
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50 Document result = XMLUtils.newDocument();
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51
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52 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator(
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53 result,
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54 ArtifactNamespaceContext.NAMESPACE_URI,
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55 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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56
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57 Session session = SessionHolder.acquire();
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58 try {
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59 List<River> allRivers = RiverFactory.getRivers();
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61 Element rivers = ec.create("rivers");
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62
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63 for (River river: allRivers) {
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64 Element r = ec.create("river");
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65 ec.addAttr(r, "name", river.getName(), true);
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67 rivers.appendChild(r);
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68 }
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70 result.appendChild(rivers);
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71 }
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72 finally {
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73 session.close();
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74 SessionHolder.release();
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75 }
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76
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77 return result;
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78 }
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79 }
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80 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org