Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/MetaDataService.java @ 957:e91996b46e3c

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Meta data template: Added new choose/when/otherwise construct similiar to XSLT flys-artifacts/trunk@2376 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Wed, 20 Jul 2011 14:59:25 +0000
parents 22bc87a42a0d
children a63d79107289
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
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15 import de.intevation.artifactdatabase.DefaultService;
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16
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17 import de.intevation.artifacts.common.utils.XMLUtils;
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18
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19 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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20
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21 import de.intevation.flys.artifacts.services.meta.Builder;
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22 import de.intevation.flys.artifacts.services.meta.DataCage;
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23
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24 import de.intevation.flys.backend.SessionHolder;
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25
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26 import org.hibernate.Session;
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27
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28 import org.hibernate.jdbc.Work;
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29
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30 public class MetaDataService
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31 extends DefaultService
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32 {
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33 private static Logger log = Logger.getLogger(MetaDataService.class);
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34
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35 public static final String XPATH_RIVER = "/art:river/text()";
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36
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37 public MetaDataService() {
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38 }
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39
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40 protected static Map<String, Object> extractParameters(Document data) {
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41 HashMap<String, Object> parameters = new HashMap<String, Object>();
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42
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43 String river = XMLUtils.xpathString(
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44 data, XPATH_RIVER, ArtifactNamespaceContext.INSTANCE);
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45
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46 if (river == null || (river = river.trim()).length() == 0) {
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47 river = "%"; // matches all rivers
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48 }
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49
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50 parameters.put("river", river);
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51
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52 return parameters;
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53 }
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54
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55 @Override
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56 public Document process(
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57 Document data,
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58 Object globalContext,
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59 CallMeta callMeta
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60 ) {
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61 log.debug("MetaDataService.process");
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62
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63 final Document result = XMLUtils.newDocument();
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64
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65 final Builder builder = DataCage.getInstance().getBuilder();
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66
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67 if (builder == null) {
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68 log.error("MetaDataService is not setup properly.");
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69 return result;
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70 }
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71
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72 final Map<String, Object> parameters = extractParameters(data);
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73
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74 Session session = SessionHolder.acquire();
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75 try {
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76 session.doWork(new Work() {
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77 @Override
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78 public void execute(Connection connection)
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79 throws SQLException
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80 {
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81 log.debug("MetaDataService.execute");
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82 builder.build(connection, result, parameters);
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83 }
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84 });
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85 }
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86 finally {
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87 session.close();
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88 SessionHolder.release();
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89 }
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90
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91 return result;
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92 }
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93 }
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94 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org