--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/artifact-database/src/main/java/de/intevation/artifactdatabase/transition/Transition.java	Thu Feb 03 18:00:41 2011 +0000
@@ -0,0 +1,40 @@
+package de.intevation.artifactdatabase.transition;
+
+import de.intevation.artifactdatabase.state.State;
+
+
+/**
+ * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
+ */
+public interface Transition {
+
+    /**
+     * Return the ID of the start State.
+     */
+    public String getFrom();
+
+    /**
+     * Return the ID of the target State.
+     */
+    public String getTo();
+
+    /**
+     * Set the ID of the current State.
+     *
+     * @param from The ID of the current state.
+     */
+    public void setFrom(String from);
+
+    /**
+     * Set the ID of the target State.
+     *
+     * @param to The ID of the target state.
+     */
+    public void setTo(String to);
+
+    /**
+     * Determines if the transition from <code>state</code> is valid.
+     */
+    public boolean isValid(State state);
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :