Mercurial > dive4elements > river

annotate flys-backend/src/main/java/de/intevation/flys/importer/ImportMorphWidth.java @ 3943:a5b003595d6c

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Store minfo values into database only if their peer has been successfully stored. flys-backend/trunk@5520 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 19 Sep 2012 10:05:36 +0000
parents 0a536eb5d668
children 4ee97d914501
rev   line source
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0c2567626754 Tiny schema modification specific to MINFO morphological width values; added importer classes.
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1 package de.intevation.flys.importer;
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2
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3 import java.sql.SQLException;
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4 import java.util.ArrayList;
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5 import java.util.List;
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6
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7 import org.apache.log4j.Logger;
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8 import org.hibernate.Query;
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9 import org.hibernate.Session;
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10 import org.hibernate.exception.ConstraintViolationException;
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11
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12 import de.intevation.flys.model.MorphologicalWidth;
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13 import de.intevation.flys.model.River;
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15
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16 public class ImportMorphWidth {
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17
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18 private static Logger log = Logger.getLogger(ImportMorphWidth.class);
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20 protected MorphologicalWidth peer;
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21
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22 protected ImportUnit unit;
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23
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24 protected List<ImportMorphWidthValue> values;
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25
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26 public ImportMorphWidth() {
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27 this.values = new ArrayList<ImportMorphWidthValue>();
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28 }
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29
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30 public void addValue(ImportMorphWidthValue value) {
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31 this.values.add(value);
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32 }
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33
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34 public void setUnit(ImportUnit unit) {
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35 this.unit = unit;
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36 }
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37
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38 public void storeDependencies(River river) throws SQLException,
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39 ConstraintViolationException {
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40 log.info("store dependencies");
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41
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42 MorphologicalWidth peer = getPeer(river);
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43
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44 if (peer != null) {
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45 log.info("store morphological width values");
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46
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47 for (ImportMorphWidthValue value : values) {
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48 value.storeDependencies(peer);
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49 }
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50 }
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51 }
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52
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53 public MorphologicalWidth getPeer(River river) {
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54 log.info("get peer");
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55
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56 if (peer == null) {
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57 Session session = ImporterSession.getInstance()
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58 .getDatabaseSession();
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59
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60 Query query = session.createQuery("from MorphologicalWidth where "
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61 + " river=:river and " + " unit=:unit");
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62
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63 query.setParameter("river", river);
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64 query.setParameter("unit", unit.getPeer());
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65
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66 List<MorphologicalWidth> widths = query.list();
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67
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68 if (widths.isEmpty()) {
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69 log.debug("Create new MorphologicalWidth DB instance.");
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71 peer = new MorphologicalWidth(river, unit.getPeer());
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72
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73 session.save(peer);
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74 }
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75 else {
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76 peer = widths.get(0);
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77 }
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78 }
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79
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80 return peer;
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81 }
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82 }
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83 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org