Mercurial > dive4elements > river
annotate backend/src/main/java/org/dive4elements/river/importer/common/AbstractKmLineImport.java @ 8988:ae76f618d990
Checks added for missing import directory
author | mschaefer |
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date | Sun, 08 Apr 2018 18:09:32 +0200 |
parents | 50416a0df385 |
children | ddebd4c2fe93 |
rev | line source |
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8971
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1 /* Copyright (C) 2017 by Bundesanstalt für Gewässerkunde |
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2 * Software engineering by |
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3 * Björnsen Beratende Ingenieure GmbH |
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4 * Dr. Schumacher Ingenieurbüro für Wasser und Umwelt |
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5 * |
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6 * This file is Free Software under the GNU AGPL (>=v3) |
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7 * and comes with ABSOLUTELY NO WARRANTY! Check out the |
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8 * documentation coming with Dive4Elements River for details. |
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9 */ |
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10 |
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11 package org.dive4elements.river.importer.common; |
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12 |
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13 import org.dive4elements.river.importer.ImporterSession; |
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14 import org.hibernate.Session; |
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15 |
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16 /** |
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17 * Abstract base class of a river station with associated data importing from a file |
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18 * |
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19 * @author Matthias Schäfer |
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20 * |
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21 */ |
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22 public abstract class AbstractKmLineImport<SERIES, KMTUPLE> { |
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23 |
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24 /***** FIELDS *****/ |
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25 |
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26 protected double station; |
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27 |
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28 private KMTUPLE peer; |
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29 |
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30 protected StoreMode storeMode; |
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31 |
8988 | 32 |
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33 /***** CONSTRUCTOR *****/ |
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34 |
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35 public AbstractKmLineImport(final double km) { |
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36 this.station = km; |
8988 | 37 this.storeMode = StoreMode.NONE; |
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38 } |
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39 |
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40 |
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41 /***** METHODS *****/ |
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42 |
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43 /** |
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44 * Stores the station value record in the database |
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45 */ |
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46 public StoreMode store(final SERIES parent, final StoreMode parentStoreMode) { |
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47 getPeer(parent, parentStoreMode); |
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48 return this.storeMode; |
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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 * Gets the station value record from the database if existing, or creates a database record from this object and adds |
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54 * it |
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55 */ |
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56 protected KMTUPLE getPeer(final SERIES parent, final StoreMode parentStoreMode) { |
8988 | 57 if (this.peer != null) |
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58 return this.peer; |
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59 final Session session = ImporterSession.getInstance().getDatabaseSession(); |
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60 KMTUPLE value = null; |
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61 if (parentStoreMode != StoreMode.INSERT) { |
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62 value = queryValueItem(session, parent); |
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63 } |
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64 if (value == null) { |
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65 this.peer = createValueItem(parent); |
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66 session.save(this.peer); |
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67 this.storeMode = StoreMode.INSERT; |
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68 } else { |
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69 this.peer = value; |
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70 this.storeMode = StoreMode.UPDATE; |
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71 } |
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72 return this.peer; |
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73 } |
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74 |
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75 /** |
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76 * Queries the (first matching) value item from the database |
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77 * |
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78 * @return first matching database value item, or null |
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79 */ |
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80 protected abstract KMTUPLE queryValueItem(final Session session, final SERIES parent); |
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81 |
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82 /** |
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83 * Creates a new value item |
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84 */ |
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85 protected abstract KMTUPLE createValueItem(final SERIES parent); |
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86 } |