Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/org/dive4elements/river/artifacts/transitions/TransitionFactory.java @ 5831:bd047b71ab37

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Repaired internal references
author Sascha L. Teichmann <teichmann@intevation.de>
date Thu, 25 Apr 2013 12:06:39 +0200
parents flys-artifacts/src/main/java/de/intevation/flys/artifacts/transitions/TransitionFactory.java@542f280d72c3
children
rev   line source
5831
bd047b71ab37 Repaired internal references
Sascha L. Teichmann <teichmann@intevation.de>
parents: 354
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1 package org.dive4elements.river.artifacts.transitions;
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5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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3 import javax.xml.xpath.XPathConstants;
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4
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5 import org.apache.log4j.Logger;
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7 import org.w3c.dom.Node;
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bd047b71ab37 Repaired internal references
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9 import org.dive4elements.artifactdatabase.transition.Transition;
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a228b39494a9 Improved the bootstrap process - the states are initialized.
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parents: 354
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11 import org.dive4elements.artifacts.common.utils.XMLUtils;
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5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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14 /**
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15 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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16 */
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17 public class TransitionFactory {
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18
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19 /** The logger used in this class */
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20 private static Logger logger = Logger.getLogger(TransitionFactory.class);
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22 /** The XPath to the classname of the transition */
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23 public static final String XPATH_TRANSITION = "@transition";
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25 /** The XPath to the current state ID */
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26 public static final String XPATH_CURRENT_STATE = "from/@state";
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27
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28 /** The XPath to the target state ID */
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29 public static final String XPATH_TARGET_STATE = "to/@state";
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31
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32 /**
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33 * Creates a new Transition based on the configured class provided by
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34 * <code>transitionConf</code>.
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35 *
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36 * @param transitionConf The configuration of the transition.
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37 *
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38 * @return a Transition.
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39 */
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40 public static Transition createTransition(Node transitionConf) {
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41 String clazz = (String) XMLUtils.xpath(
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42 transitionConf, XPATH_TRANSITION, XPathConstants.STRING);
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43
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44 Transition transition = null;
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45
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46 try {
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47 transition = (Transition) Class.forName(clazz).newInstance();
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49 String from = (String) XMLUtils.xpath(
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50 transitionConf, XPATH_CURRENT_STATE, XPathConstants.STRING);
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51 String to = (String) XMLUtils.xpath(
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52 transitionConf, XPATH_TARGET_STATE, XPathConstants.STRING);
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53
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542f280d72c3 Bugfix: Added the missing init() method to a Transition and call it in the TransitionFactory after a Transition has been created.
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54 transition.init(transitionConf);
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55 transition.setFrom(from);
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56 transition.setTo(to);
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57 }
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58 catch (InstantiationException ie) {
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59 logger.error(ie, ie);
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60 }
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61 catch (IllegalAccessException iae) {
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62 logger.error(iae, iae);
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63 }
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64 catch (ClassNotFoundException cnfe) {
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65 logger.error(cnfe, cnfe);
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66 }
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67
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68 return transition;
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69 }
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70 }
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71 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org