Mercurial > dive4elements > gnv-client
diff 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> |
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date | Tue, 08 Dec 2009 13:38:21 +0000 |
parents | |
children | 9a828e5a2390 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gnv-artifacts/src/main/java/de/intevation/gnv/transition/TransitionFactory.java Tue Dec 08 13:38:21 2009 +0000 @@ -0,0 +1,55 @@ +/** + * + */ +package de.intevation.gnv.transition; + +import org.apache.log4j.Logger; +import org.w3c.dom.Node; + +import de.intevation.gnv.artifacts.GNVArtifactBase; + +/** + * @author Tim Englich <tim.englich@intevation.de> + * + */ +public class TransitionFactory { + + /** + * the logger, used to log exceptions and additonaly information + */ + private static Logger log = Logger.getLogger(GNVArtifactBase.class); + + private static TransitionFactory instance = null; + + /** + * Constructor + */ + public TransitionFactory() { + super(); + } + + public static TransitionFactory getInstance() { + if (instance == null) { + instance = new TransitionFactory(); + } + return instance; + } + + public Transition createTransition(Node configuration) { + log.debug("TransitionFactory.createTransition"); + Transition state = null; + try { + String classname = ((org.w3c.dom.Element)configuration).getAttribute("transition"); + state = (Transition) (Class.forName(classname).newInstance()); + state.setup(configuration); + } catch (InstantiationException e) { + log.error(e, e); + } catch (IllegalAccessException e) { + log.error(e, e); + } catch (ClassNotFoundException e) { + log.error(e, e); + } + return state; + } + +}