Mercurial > dive4elements > gnv-client
annotate gnv-artifacts/src/main/java/de/intevation/gnv/transition/TransitionFactory.java @ 819:6925d18580c0
Added more Javadoc.
gnv-artifacts/trunk@905 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Tim Englich <tim.englich@intevation.de> |
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date | Mon, 12 Apr 2010 13:12:21 +0000 |
parents | 79c1db3ca7cc |
children | 7e5995c47125 |
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Last Step of the Refactoring Work on the Transition Model.
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1 package de.intevation.gnv.transition; |
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3 import de.intevation.gnv.artifacts.GNVArtifactBase; |
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4 |
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5 import org.apache.log4j.Logger; |
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6 |
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7 import org.w3c.dom.Node; |
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8 |
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9 /** |
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10 * @author <a href="mailto:tim.englich@intevation.de">Tim Englich</a> |
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11 * |
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12 */ |
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13 public class TransitionFactory { |
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14 |
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15 /** |
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16 * the logger, used to log exceptions and additonaly information |
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17 */ |
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18 private static Logger log = Logger.getLogger(GNVArtifactBase.class); |
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19 |
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20 private static TransitionFactory instance = null; |
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21 |
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22 /** |
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23 * Constructor |
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24 */ |
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25 public TransitionFactory() { |
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26 super(); |
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27 } |
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28 |
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29 public static TransitionFactory getInstance() { |
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30 if (instance == null) { |
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31 instance = new TransitionFactory(); |
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32 } |
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33 return instance; |
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34 } |
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35 |
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36 public Transition createTransition(Node configuration) { |
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37 log.debug("TransitionFactory.createTransition"); |
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38 Transition state = null; |
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39 try { |
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40 String classname = ((org.w3c.dom.Element)configuration).getAttribute("transition"); |
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41 state = (Transition) (Class.forName(classname).newInstance()); |
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42 state.setup(configuration); |
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43 } catch (InstantiationException e) { |
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44 log.error(e, e); |
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45 } catch (IllegalAccessException e) { |
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46 log.error(e, e); |
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47 } catch (ClassNotFoundException e) { |
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48 log.error(e, e); |
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49 } |
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50 return state; |
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51 } |
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52 } |
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53 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |