Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/MetaDataService.java @ 969:2c8fc60125b9

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Meta data template: Allow '-' in variable names. flys-artifacts/trunk@2393 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Fri, 22 Jul 2011 09:10:31 +0000
parents a63d79107289
children e456aca4eb7b
rev   line source
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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 // old service. To be removed
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37 public static final String XPATH_RIVER = "/art:river/text()";
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38
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39 public static final String XPATH_OUT = "/art:out/@value";
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40 public static final String XPATH_UUID = "/art:uuid/@value";
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41
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42 public MetaDataService() {
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43 }
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44
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45 protected static Map<String, Object> extractParameters(Document data) {
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46 HashMap<String, Object> parameters = new HashMap<String, Object>();
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47
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48 String river = XMLUtils.xpathString(
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49 data, XPATH_RIVER, ArtifactNamespaceContext.INSTANCE);
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50
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51 if (river == null || (river = river.trim()).length() == 0) {
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52 river = "%"; // matches all rivers
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53 }
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54
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55 parameters.put("river", river);
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56
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57 return parameters;
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58 }
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59
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60 @Override
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61 public Document process(
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62 Document data,
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63 GlobalContext globalContext,
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64 CallMeta callMeta
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65 ) {
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66 log.debug("MetaDataService.process");
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67
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68 final Document result = XMLUtils.newDocument();
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69
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70 final Builder builder = DataCage.getInstance().getBuilder();
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71
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72 if (builder == null) {
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73 log.error("MetaDataService is not setup properly.");
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74 return result;
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75 }
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76
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77 final Map<String, Object> parameters = extractParameters(data);
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78
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79 Session session = SessionHolder.acquire();
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80 try {
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81 session.doWork(new Work() {
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82 @Override
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83 public void execute(Connection connection)
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84 throws SQLException
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85 {
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86 log.debug("MetaDataService.execute");
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87 builder.build(connection, result, parameters);
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88 }
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89 });
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90 }
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91 finally {
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92 session.close();
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93 SessionHolder.release();
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94 }
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95
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96 return result;
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97 }
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98 }
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99 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org