Mercurial > dive4elements > gnv-client
comparison gnv-artifacts/src/main/java/de/intevation/gnv/transition/TransitionFactory.java @ 337:a887074460b6
Last Step of the Refactoring Work on the Transition Model.
Splitted Businesslogic between States and Transitions.
Splitted the ConfigurationElements of State and Transition in several XML-Fragments.
gnv-artifacts/trunk@403 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Tim Englich <tim.englich@intevation.de> |
|---|---|
| date | Tue, 08 Dec 2009 13:38:21 +0000 |
| parents | |
| children | 9a828e5a2390 |
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| 336:1b9ca0f2d498 | 337:a887074460b6 |
|---|---|
| 1 /** | |
| 2 * | |
| 3 */ | |
| 4 package de.intevation.gnv.transition; | |
| 5 | |
| 6 import org.apache.log4j.Logger; | |
| 7 import org.w3c.dom.Node; | |
| 8 | |
| 9 import de.intevation.gnv.artifacts.GNVArtifactBase; | |
| 10 | |
| 11 /** | |
| 12 * @author Tim Englich <tim.englich@intevation.de> | |
| 13 * | |
| 14 */ | |
| 15 public class TransitionFactory { | |
| 16 | |
| 17 /** | |
| 18 * the logger, used to log exceptions and additonaly information | |
| 19 */ | |
| 20 private static Logger log = Logger.getLogger(GNVArtifactBase.class); | |
| 21 | |
| 22 private static TransitionFactory instance = null; | |
| 23 | |
| 24 /** | |
| 25 * Constructor | |
| 26 */ | |
| 27 public TransitionFactory() { | |
| 28 super(); | |
| 29 } | |
| 30 | |
| 31 public static TransitionFactory getInstance() { | |
| 32 if (instance == null) { | |
| 33 instance = new TransitionFactory(); | |
| 34 } | |
| 35 return instance; | |
| 36 } | |
| 37 | |
| 38 public Transition createTransition(Node configuration) { | |
| 39 log.debug("TransitionFactory.createTransition"); | |
| 40 Transition state = null; | |
| 41 try { | |
| 42 String classname = ((org.w3c.dom.Element)configuration).getAttribute("transition"); | |
| 43 state = (Transition) (Class.forName(classname).newInstance()); | |
| 44 state.setup(configuration); | |
| 45 } catch (InstantiationException e) { | |
| 46 log.error(e, e); | |
| 47 } catch (IllegalAccessException e) { | |
| 48 log.error(e, e); | |
| 49 } catch (ClassNotFoundException e) { | |
| 50 log.error(e, e); | |
| 51 } | |
| 52 return state; | |
| 53 } | |
| 54 | |
| 55 } |