Mercurial > dive4elements > gnv-client
view gnv-artifacts/src/main/java/de/intevation/gnv/transition/ValueCompareTransition.java @ 1053:6169ddc827ac
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gnv-artifacts/trunk@1127 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Wed, 26 May 2010 07:00:55 +0000 |
parents | 05bf8534a35a |
children | f953c9a559d8 |
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package de.intevation.gnv.transition; import java.util.Iterator; import org.apache.log4j.Logger; import org.w3c.dom.Node; import de.intevation.artifactdatabase.Config; import de.intevation.gnv.state.InputData; import de.intevation.gnv.state.State; import de.intevation.gnv.state.exception.StateException; /** * Class which supports the possibility to validate if a * Transition could be done using simple Valuecompare Operations. * At this Time equal and notequal-operations are supported. * The Comparation is casesensitive. * @author <a href="mailto:tim.englich@intevation.de">Tim Englich</a> * */ public class ValueCompareTransition extends TransitionBase { /** * the logger, used to log exceptions and additonaly information */ private static Logger log = Logger.getLogger(ValueCompareTransition.class); /** * The UID of this Class. */ private static final long serialVersionUID = -7846722158776823205L; /** * The Name of the Datafield the Value that should be compared * should be fetched from. */ private String dataName = null; /** * The Value that should be set to the State. */ private String dataValue = null; /** * The Operation that should be used (equal notequal) */ private String operator = null; /** * Constructor */ public ValueCompareTransition() { super(); } /** * validates if a Transition is valid and could be used using simple * Comparevalue-Operations. * @see de.intevation.gnv.transition.Transition#isValid(de.intevation.gnv.state.State) */ public boolean isValid(State state) { try { Iterator<InputData> it = state.getInputData().iterator(); while (it.hasNext()){ InputData inputData = it.next(); if (inputData.getName().equals(this.dataName)){ boolean returnValue = false; if (operator.equals("equal")){ returnValue = this.dataValue.equals(inputData.getValue()); }else if (operator.equals("notequal")){ returnValue = !this.dataValue.equals(inputData.getValue()); } return returnValue; } } if (operator.equals("notequal")){ // data is not given. So the constraint not Equals is fullfilled. return true; } } catch (StateException e) { log.error(e,e); return false; } return false; } @Override public void setup(Node configuration) { super.setup(configuration); this.dataName = Config.getStringXPath(configuration,"condition/@inputvalue"); this.dataValue = Config.getStringXPath(configuration,"condition/@value"); this.operator = Config.getStringXPath(configuration,"condition/@operator"); } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :