Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/artifacts/transitions/TransitionFactory.java @ 9726:0a5239a1e46e 3.2.x
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author | Tom Gottfried <tom@intevation.de> |
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date | Wed, 02 Mar 2022 10:26:50 +0100 |
parents | e4606eae8ea5 |
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde |
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2 * Software engineering by Intevation GmbH |
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3 * |
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4 * This file is Free Software under the GNU AGPL (>=v3) |
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the |
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6 * documentation coming with Dive4Elements River for details. |
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7 */ |
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8 |
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9 package org.dive4elements.river.artifacts.transitions; |
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10 |
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11 import javax.xml.xpath.XPathConstants; |
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12 |
9726 | 13 import org.apache.logging.log4j.Logger; |
14 import org.apache.logging.log4j.LogManager; | |
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15 |
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16 import org.w3c.dom.Node; |
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17 |
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18 import org.dive4elements.artifactdatabase.transition.Transition; |
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19 |
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20 import org.dive4elements.artifacts.common.utils.XMLUtils; |
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21 |
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22 |
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23 /** |
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24 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> |
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25 */ |
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26 public class TransitionFactory { |
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27 |
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28 /** The log used in this class */ |
9726 | 29 private static Logger log = LogManager.getLogger(TransitionFactory.class); |
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30 |
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31 /** The XPath to the classname of the transition */ |
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32 public static final String XPATH_TRANSITION = "@transition"; |
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33 |
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34 /** The XPath to the current state ID */ |
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35 public static final String XPATH_CURRENT_STATE = "from/@state"; |
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36 |
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37 /** The XPath to the target state ID */ |
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38 public static final String XPATH_TARGET_STATE = "to/@state"; |
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39 |
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40 |
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41 /** |
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42 * Creates a new Transition based on the configured class provided by |
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43 * <code>transitionConf</code>. |
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44 * |
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45 * @param transitionConf The configuration of the transition. |
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46 * |
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47 * @return a Transition. |
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48 */ |
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49 public static Transition createTransition(Node transitionConf) { |
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50 String clazz = (String) XMLUtils.xpath( |
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51 transitionConf, XPATH_TRANSITION, XPathConstants.STRING); |
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52 |
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53 Transition transition = null; |
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54 |
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55 try { |
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56 transition = (Transition) Class.forName(clazz).newInstance(); |
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57 |
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58 String from = (String) XMLUtils.xpath( |
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59 transitionConf, XPATH_CURRENT_STATE, XPathConstants.STRING); |
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60 String to = (String) XMLUtils.xpath( |
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61 transitionConf, XPATH_TARGET_STATE, XPathConstants.STRING); |
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62 |
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63 transition.init(transitionConf); |
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64 transition.setFrom(from); |
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65 transition.setTo(to); |
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66 } |
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67 catch (InstantiationException ie) { |
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68 log.error(ie, ie); |
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69 } |
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70 catch (IllegalAccessException iae) { |
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71 log.error(iae, iae); |
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72 } |
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73 catch (ClassNotFoundException cnfe) { |
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74 log.error(cnfe, cnfe); |
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75 } |
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76 |
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77 return transition; |
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78 } |
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79 } |
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80 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |