Changed status of Activate

1 files changed, 17 insertions, 30 deletions

diff --git a/comm/Message.cc b/comm/Message.cc
index 7d42248..fea0d80 100644
--- a/comm/Message.cc
+++ b/comm/Message.cc
@@ -3,7 +3,7 @@
  *
  *	by Michel Beaudouin-Lafon
  *
- *	Copyright 1990-1993
+ *	Copyright 1990-1995
  *	Laboratoire de Recherche en Informatique (LRI)
  *
  *	Messages
@@ -15,6 +15,7 @@
 #include "cplus_bugs.h"
 
 #include "Message.h"
+#include "MsgStream.h"
 #include "IOS.h"
 
 /*?class UchMessage
@@ -63,36 +64,22 @@ UchMessage :: ReadFrom (UchIOS&, lword)
 }
 
 /*?
-This virtual function can be redefined in derived classes to support the handling of messages
-after they have been loaded from a buffer. The function \typ{MyClient}::\fun{NewMessage}
-may then look like:
-\begin{ccode}
-void
-MyClient :: NewMessage (UchMsgBuffer& buffer, bool ask)
-{
-    MyRequest* m = 0;
-    lword type;
-    buffer.MsgPeek (&type);
-    switch (type) {
-    case MyFirstReqType:
-        m = new MyFirstRequest;
-        break;
-    case ...
-       ...
-    }
-    if (m) {
-        buffer.Get (m);
-        m->Activate (*this);
-        return true;
-    }
-    return false;
-}
-\end{ccode}
-However, this virtual function is only provided as a facility and is not used
-by \uch. Redefining it is not mandatory.
+This virtual function must be redefined in derived classes to support the handling of messages
+after they have been loaded from a buffer. 
+\var{ask} is true if the message was sent with \fun{Ask}.
+In this case an answer must be sent back with \fun{Reply}.
+Messages can be sent before replying; they will be buffered by the receiver for later processing.
+But you cannot use \fun{Ask} before replying.
+In the class \typ{UchMessage} this function does nothing and returns true;
+if \var{ask} is true, it replies immediately with an empty message.
 ?*/
-void
-UchMessage :: Activate (UchMsgStream&)
+bool
+UchMessage :: Activate (UchMsgStream& s, bool ask)
 {
+	if (ask) {
+		UchMessage dummy;
+		s.Reply (dummy);
+	}
+	return true;
 }