Mercurial > dive4elements > river
view artifacts/src/main/java/org/dive4elements/river/artifacts/transitions/TransitionFactory.java @ 8755:30b1ddadf275
(issue1801) Unify reference gauge finding code
The basic way as described in the method comment of the
determineRefGauge method is now used in the WINFOArtifact,
MainValuesService and RiverUtils.getGauge method.
RiverUtils.getGauge previously just returned the first
gauge found. While this is now a behavior change I believe
that it is always more correct then the undeterministic
behavior of the previous implmenentation.
author | Andre Heinecke <andre.heinecke@intevation.de> |
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date | Wed, 24 Jun 2015 14:07:26 +0200 |
parents | e4606eae8ea5 |
children | 0a5239a1e46e |
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/* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde * Software engineering by Intevation GmbH * * This file is Free Software under the GNU AGPL (>=v3) * and comes with ABSOLUTELY NO WARRANTY! Check out the * documentation coming with Dive4Elements River for details. */ package org.dive4elements.river.artifacts.transitions; import javax.xml.xpath.XPathConstants; import org.apache.log4j.Logger; import org.w3c.dom.Node; import org.dive4elements.artifactdatabase.transition.Transition; import org.dive4elements.artifacts.common.utils.XMLUtils; /** * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> */ public class TransitionFactory { /** The log used in this class */ private static Logger log = Logger.getLogger(TransitionFactory.class); /** The XPath to the classname of the transition */ public static final String XPATH_TRANSITION = "@transition"; /** The XPath to the current state ID */ public static final String XPATH_CURRENT_STATE = "from/@state"; /** The XPath to the target state ID */ public static final String XPATH_TARGET_STATE = "to/@state"; /** * Creates a new Transition based on the configured class provided by * <code>transitionConf</code>. * * @param transitionConf The configuration of the transition. * * @return a Transition. */ public static Transition createTransition(Node transitionConf) { String clazz = (String) XMLUtils.xpath( transitionConf, XPATH_TRANSITION, XPathConstants.STRING); Transition transition = null; try { transition = (Transition) Class.forName(clazz).newInstance(); String from = (String) XMLUtils.xpath( transitionConf, XPATH_CURRENT_STATE, XPathConstants.STRING); String to = (String) XMLUtils.xpath( transitionConf, XPATH_TARGET_STATE, XPathConstants.STRING); transition.init(transitionConf); transition.setFrom(from); transition.setTo(to); } catch (InstantiationException ie) { log.error(ie, ie); } catch (IllegalAccessException iae) { log.error(iae, iae); } catch (ClassNotFoundException cnfe) { log.error(cnfe, cnfe); } return transition; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :