Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/transitions/TransitionFactory.java @ 8202:e4606eae8ea5

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sed src/**/*.java 's/logger/log/g'
author Sascha L. Teichmann <teichmann@intevation.de>
date Fri, 05 Sep 2014 12:58:17 +0200
parents af13ceeba52a
children 0a5239a1e46e
rev   line source
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
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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
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13 import org.apache.log4j.Logger;
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14
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15 import org.w3c.dom.Node;
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16
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17 import org.dive4elements.artifactdatabase.transition.Transition;
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18
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19 import org.dive4elements.artifacts.common.utils.XMLUtils;
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20
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21
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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22 /**
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23 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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24 */
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25 public class TransitionFactory {
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26
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27 /** The log used in this class */
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28 private static Logger log = Logger.getLogger(TransitionFactory.class);
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29
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30 /** The XPath to the classname of the transition */
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31 public static final String XPATH_TRANSITION = "@transition";
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32
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33 /** The XPath to the current state ID */
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34 public static final String XPATH_CURRENT_STATE = "from/@state";
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35
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36 /** The XPath to the target state ID */
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37 public static final String XPATH_TARGET_STATE = "to/@state";
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38
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39
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40 /**
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41 * Creates a new Transition based on the configured class provided by
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42 * <code>transitionConf</code>.
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43 *
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44 * @param transitionConf The configuration of the transition.
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45 *
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46 * @return a Transition.
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47 */
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48 public static Transition createTransition(Node transitionConf) {
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49 String clazz = (String) XMLUtils.xpath(
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50 transitionConf, XPATH_TRANSITION, XPathConstants.STRING);
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51
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52 Transition transition = null;
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53
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54 try {
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55 transition = (Transition) Class.forName(clazz).newInstance();
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56
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57 String from = (String) XMLUtils.xpath(
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58 transitionConf, XPATH_CURRENT_STATE, XPathConstants.STRING);
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59 String to = (String) XMLUtils.xpath(
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60 transitionConf, XPATH_TARGET_STATE, XPathConstants.STRING);
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61
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62 transition.init(transitionConf);
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63 transition.setFrom(from);
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64 transition.setTo(to);
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65 }
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66 catch (InstantiationException ie) {
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67 log.error(ie, ie);
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68 }
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69 catch (IllegalAccessException iae) {
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70 log.error(iae, iae);
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71 }
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72 catch (ClassNotFoundException cnfe) {
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73 log.error(cnfe, cnfe);
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74 }
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75
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76 return transition;
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77 }
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78 }
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79 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org