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+/* -*- Mode: Java; -*-
+
+Copyright (c) Xerox Corporation 1998-2002. All rights reserved.
+
+Use and copying of this software and preparation of derivative works based
+upon this software are permitted. Any distribution of this software or
+derivative works must comply with all applicable United States export control
+laws.
+
+This software is made available AS IS, and Xerox Corporation makes no warranty
+about the software, its performance or its conformity to any specification.
+
+|<--- this code is formatted to fit into 80 columns --->|
+|<--- this code is formatted to fit into 80 columns --->|
+|<--- this code is formatted to fit into 80 columns --->|
+
+*/
+
+package coordination;
+
+
+/**
+ * Interface for pre-conditions that are passed to guardedEntry methods of
+ * Coordinator.
+ * Conditions should be passed as anonymous classes that simply implement
+ * the checkit method.
+ *
+ */
+public interface Condition {
+
+ /**
+ * This method is called automatically by Coordinator.guardedEntry(...)
+ * and it's called everytime the coordination state changes.
+ */
+
+ public boolean checkit();
+}