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annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/transitions/TransitionFactory.java @ 106:5864c41219db

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Initializes a TransitionEngine storing all transitions for each artifact at the application start. flys-artifacts/trunk@1288 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Thu, 03 Feb 2011 10:23:30 +0000
parents
children a228b39494a9
rev   line source
106
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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1 package de.intevation.flys.artifacts.transitions;
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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2
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
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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5 import org.apache.log4j.Logger;
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6
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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7 import org.w3c.dom.Node;
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8
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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9 import de.intevation.artifacts.common.utils.XMLUtils;
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10
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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11
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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12 /**
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13 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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14 */
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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15 public class TransitionFactory {
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16
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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17 /** The logger used in this class */
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18 private static Logger logger = Logger.getLogger(TransitionFactory.class);
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19
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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20 /** The XPath to the classname of the transition */
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21 public static final String XPATH_TRANSITION = "@transition";
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22
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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23 /** The XPath to the current state ID */
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24 public static final String XPATH_CURRENT_STATE = "from/@state";
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25
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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26 /** The XPath to the target state ID */
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27 public static final String XPATH_TARGET_STATE = "to/@state";
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28
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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29
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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30 /**
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31 * Creates a new Transition based on the configured class provided by
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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32 * <code>transitionConf</code>.
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33 *
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34 * @param transitionConf The configuration of the transition.
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35 *
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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36 * @return a Transition.
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37 */
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38 public static Transition createTransition(Node transitionConf) {
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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39 String clazz = (String) XMLUtils.xpath(
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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40 transitionConf, XPATH_TRANSITION, XPathConstants.STRING);
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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41
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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42 Transition transition = null;
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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43
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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44 try {
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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45 transition = (Transition) Class.forName(clazz).newInstance();
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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46
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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47 String from = (String) XMLUtils.xpath(
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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48 transitionConf, XPATH_CURRENT_STATE, XPathConstants.STRING);
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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49 String to = (String) XMLUtils.xpath(
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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50 transitionConf, XPATH_TARGET_STATE, XPathConstants.STRING);
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51
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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52 transition.setFrom(from);
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53 transition.setTo(to);
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54 }
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55 catch (InstantiationException ie) {
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56 logger.error(ie, ie);
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57 }
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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58 catch (IllegalAccessException iae) {
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59 logger.error(iae, iae);
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60 }
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61 catch (ClassNotFoundException cnfe) {
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62 logger.error(cnfe, cnfe);
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63 }
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64
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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65 return transition;
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66 }
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67 }
5864c41219db Initializes a TransitionEngine storing all transitions for each artifact at the application start.
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68 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org