Mercurial > dive4elements > river
view flys-artifacts/src/main/java/de/intevation/flys/artifacts/transitions/TransitionEngine.java @ 106:5864c41219db
Initializes a TransitionEngine storing all transitions for each artifact at the application start.
flys-artifacts/trunk@1288 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Thu, 03 Feb 2011 10:23:30 +0000 |
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package de.intevation.flys.artifacts.transitions; import java.util.HashMap; import java.util.List; import java.util.Map; import org.apache.log4j.Logger; /** * The TransitionEngine stores all transitions for each Artifact and should be * used to determine, if an Artifact is able to advance from one to another * state. * * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> */ public class TransitionEngine { /** The logger used in this class. */ private static Logger logger = Logger.getLogger(TransitionEngine.class); /** * A map that contains the transitions of the artifacts. The key is the name * of the artifact, its value is a list of all transitions of this artifact. */ protected Map<String, List> transitions; /** * The default constructor. */ public TransitionEngine() { transitions = new HashMap<String, List>(); } /** * Add new transitions for a specific artifact. * * @param artifact the name of the Artifact. * @param transitions the list of transition of the artifact. * * @return true, if the transitions were added, otherwise false. */ public boolean addTransition(String artifact, List transitions) { List tmp = this.transitions.get(artifact); if (tmp != null) { logger.info( "Transitions for the artifact '" + artifact + "' already stored."); return false; } logger.debug("Add new transitions for artifact '" + artifact + "'"); return this.transitions.put(artifact, transitions) != null; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :