--- projects/cms/documentation/minutes/minutes-20001115.txt	2000/11/15 14:58:05	1.2
+++ projects/cms/documentation/minutes/minutes-20001115.txt	2000/11/15 19:10:14	1.3
@@ -4,27 +4,27 @@ Location: UKC Computer Science Meeting Room
 Present: ab11, ajm4, pjm2, tdb1
 Absent: None
 
-Meeting postponed until firealarm finishes. It is noted
-that Ash and Paul would have been burnt alive if there 
-was a real fire. 
+Meeting postponed until firealarm finishes. It is noted that
+Ash and Paul would have been burnt alive if there was a real 
+fire. 
 
 Meeting re-started at 11:20am. 
 
-Discussed the XML packet life problem. This has been
-identified as a problem because corba passes references
-to objects making it hard to determine when the object
-should be distroyed.
+Discussed the XML packet life problem. This has been 
+identified as a problem because corba passes references to 
+objects making it hard to determine when the object should 
+be distroyed.
 
 Paul begins implementation of a quotes page.
 
 Paul suggests that packets should be stored in a queue
-structure, with 2 integers indicating how far through 
-the queue each accessing function has got (from the start
-of the queue). This should be more efficicent than 
-storing flags inside each of the XML packet objects.
+structure, with 2 integers indicating how far through the 
+queue each accessing function has got (from the start of the 
+queue). This should be more efficient than storing flags 
+inside each of the XML packet objects.
 
-Someone needs to find out if you can 'clone' an object
-over corba. This would solve a lot of local copy problems.
+Someone needs to find out if you can 'clone' an object over 
+corba. This would solve a lot of local copy problems.
 
 Discussion of whether UDP packets should be numbered or
 timestamped proved controversal. In the end it was decided
@@ -33,4 +33,57 @@ and a timestamp (as defined by the host). It is theref
 important that the host's time is setup accurately by the
 sysadmin.
 
-Meeting concluded @ 12:40
\ No newline at end of file
+The whole issue of packet content is more of a host & client 
+design issue than a server issue.
+
+Meeting concluded @ 12:40
+
+Meeting continued @ 12:45 by a tree
+Present: ajm4, pjm2, tdb1
+
+Discussion continued about the design of the filter system. 
+The whole issue of how and where packets will be stored 
+within the system needed clearing up before implementation 
+could continue.
+
+It was noted that the key function of the filter (given it's 
+called a "filter") is to remove any packets of data it sees 
+fit. With this in mind it was decided that the data could be 
+passed on in text (or rather XML) format through the child 
+filters.
+
+This would work as follows in a child filter. Data would be 
+recieved by one of two means, UDP or CORBA. The hosts would 
+be sending UDP to the filter, and other "up-stream" child 
+filters would send over CORBA. Regardless, it will always be 
+the same content - a String of XML. In essence this means 
+that the filter will be sending and receiving exactly the 
+same string of XML - without any conversion required. 
+Internally it may be verified through "plug-ins" to see if 
+it should be dropped, but this would just be a series of 
+independant tests. Finally the string will be passed on if 
+the plug-ins allow.
+
+This allows a chain of child filters going on and on in a 
+tree-like fashion, which is what our original design 
+permitted.
+
+Finally, the parent filter will recieve all the data from 
+the child filters, and turn them into XMLPackets. These 
+packets will be stored in some kind of data structure to be 
+accessed by the various parts of the system.
+
+This solves many of our key problems.
+
+Meeting concluded @ 13:25
+
+Meeting continued @ 13:40 with iau
+
+iau briefly suggested that we alter the location of the 
+database in our system. He suggested moving this into the 
+parent filter, and then having the data passed straight on 
+to the client interface.
+
+Nothing firm was decided, but it should be analysed further.
+
+Meeting concluded @ 13:55
\ No newline at end of file