Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/MetaDataService.java @ 966:a63d79107289
Adjusted services to implement changed signature.
flys-artifacts/trunk@2387 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Thu, 21 Jul 2011 14:43:19 +0000 |
parents | 22bc87a42a0d |
children | 2c8fc60125b9 |
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1 package de.intevation.flys.artifacts.services; |
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2 |
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3 import java.sql.Connection; |
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4 import java.sql.SQLException; |
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5 |
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6 import org.w3c.dom.Document; |
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7 |
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8 import org.apache.log4j.Logger; |
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9 |
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10 import java.util.Map; |
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11 import java.util.HashMap; |
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12 |
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13 import de.intevation.artifacts.CallMeta; |
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14 import de.intevation.artifacts.GlobalContext; |
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15 |
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16 import de.intevation.artifactdatabase.DefaultService; |
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17 |
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18 import de.intevation.artifacts.common.utils.XMLUtils; |
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19 |
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20 import de.intevation.artifacts.common.ArtifactNamespaceContext; |
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21 |
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22 import de.intevation.flys.artifacts.services.meta.Builder; |
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23 import de.intevation.flys.artifacts.services.meta.DataCage; |
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24 |
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25 import de.intevation.flys.backend.SessionHolder; |
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26 |
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27 import org.hibernate.Session; |
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28 |
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29 import org.hibernate.jdbc.Work; |
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30 |
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31 public class MetaDataService |
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32 extends DefaultService |
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33 { |
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34 private static Logger log = Logger.getLogger(MetaDataService.class); |
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35 |
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36 public static final String XPATH_RIVER = "/art:river/text()"; |
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37 |
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38 public MetaDataService() { |
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39 } |
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40 |
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41 protected static Map<String, Object> extractParameters(Document data) { |
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42 HashMap<String, Object> parameters = new HashMap<String, Object>(); |
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43 |
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44 String river = XMLUtils.xpathString( |
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45 data, XPATH_RIVER, ArtifactNamespaceContext.INSTANCE); |
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46 |
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47 if (river == null || (river = river.trim()).length() == 0) { |
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48 river = "%"; // matches all rivers |
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49 } |
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50 |
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51 parameters.put("river", river); |
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52 |
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53 return parameters; |
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54 } |
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55 |
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56 @Override |
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57 public Document process( |
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58 Document data, |
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59 GlobalContext globalContext, |
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60 CallMeta callMeta |
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61 ) { |
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62 log.debug("MetaDataService.process"); |
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63 |
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64 final Document result = XMLUtils.newDocument(); |
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65 |
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66 final Builder builder = DataCage.getInstance().getBuilder(); |
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67 |
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68 if (builder == null) { |
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69 log.error("MetaDataService is not setup properly."); |
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70 return result; |
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71 } |
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72 |
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73 final Map<String, Object> parameters = extractParameters(data); |
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74 |
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75 Session session = SessionHolder.acquire(); |
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76 try { |
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77 session.doWork(new Work() { |
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78 @Override |
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79 public void execute(Connection connection) |
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80 throws SQLException |
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81 { |
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82 log.debug("MetaDataService.execute"); |
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83 builder.build(connection, result, parameters); |
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84 } |
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85 }); |
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86 } |
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87 finally { |
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88 session.close(); |
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89 SessionHolder.release(); |
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90 } |
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91 |
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92 return result; |
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93 } |
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94 } |
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95 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |