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Java/storage/ZZDimStorer.java

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+/*   
+ZZDimStorer.java
+ *    
+ *    Copyright (c) 2000, Ted Nelson and Tuomas Lukka
+ *
+ *    You may use and distribute under the terms of either the GNU Lesser
+ *    General Public License, either version 2 of the license or,
+ *    at your choice, any later version. Alternatively, you may use and
+ *    distribute under the terms of the XPL.
+ *
+ *    See the LICENSE.lgpl and LICENSE.xpl files for the specific terms of 
+ *    the licenses.
+ *
+ *    This software is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the README
+ *    file for more details.
+ *
+ */
+/*
+ * Written by Tuomas Lukka
+ */
+package org.gzigzag;
+import java.awt.*;
+import java.util.*;
+import java.io.*;
+
+/** A simple interface between persistent and temporary storage.
+ * This class is used simply for transmitting information about 
+ * connections.
+ * <p>
+ * The speciality of this class is that the operations need not make
+ * sense atomically: only the end result of several operations counts.
+ * So if a is connected to b, then connect(b, -, c), disconnect(a, +), 
+ * is perfectly valid.
+ * All disconnections must be given in both directions; connects 
+ * only once (that's why there's no dir there).
+ * <p>
+ * If the above seems unclear, just see how it's used and where
+ * it's not used: the class that is used for the on-line dims is ZZDimension.
+ */
+
+public interface ZZDimStorer {
+String rcsid = "$Id: ZZDimStorer.java,v 1.4 2000/09/19 10:32:01 ajk Exp $";
+    void storeConnect(String a, String b);
+    void storeDisconnect(String a, int dir);
+}