--- /dev/null
+// Command.java\r
+// $Id: ControlCommand.java,v 1.1 2010/06/15 12:21:51 smhuang Exp $\r
+// (c) COPYRIGHT MIT and INRIA, 1996.\r
+// Please first read the full copyright statement in file COPYRIGHT.html\r
+\r
+package org.w3c.jigsaw.ssi.commands ;\r
+\r
+import java.util.Dictionary;\r
+\r
+import org.w3c.util.ArrayDictionary;\r
+\r
+import org.w3c.jigsaw.http.Request;\r
+\r
+import org.w3c.jigsaw.ssi.SSIFrame;\r
+\r
+/**\r
+ * This interface is used to supply implementations of SSI\r
+ * commands. They have to be registered in a CommandRegistry, which in\r
+ * turn is used by the SSIFrame. A control command is a command \r
+ * like loop or if witch can modify the way to execute commands.\r
+ * A control command have to register is position and to know the\r
+ * next position. A position is an integer, witch can be an array\r
+ * index.\r
+ * @see org.w3c.jigsaw.ssi.commands.CommandRegistry\r
+ * @author Benoit Mahe <bmahe@sophia.inria.fr>\r
+ */\r
+\r
+public interface ControlCommand extends Command {\r
+\r
+ /**\r
+ * register the command position in the structure\r
+ * witch store the SSIFrame.\r
+ */\r
+ public void setPosition(SSIFrame ssiframe,\r
+ Request request,\r
+ CommandRegistry registry,\r
+ ArrayDictionary parameters,\r
+ Dictionary variables,\r
+ int position);\r
+\r
+ /**\r
+ * Give the next position in the structure witch\r
+ * store the SSIFrame.\r
+ * @return An integer\r
+ * @exception ControlCommandException if action failed.\r
+ */\r
+ public int jumpTo(SSIFrame ssiframe,\r
+ Request request,\r
+ CommandRegistry registry,\r
+ ArrayDictionary parameters,\r
+ Dictionary variables)\r
+ throws ControlCommandException;\r
+\r
+}\r
+\r
+\r