[snmp] Making AsnObjectId comparable

[Birgit Arkesteijn]

I added Josh's implementation to AsnObjectId and checked it into cvs.
It's compiled, but not tested.

Thanks, Josh!

Cheers, Birgit

-------- Original Message --------
Subject: 	RE: [snmp] Making AsnObjectId comparable
Date: 	Fri, 2 May 2008 13:29:25 -0400
From: 	Josh Bers <jbers at bbn.com>
Organisation: 	BBN Technologies
To: 	'Birgit Arkesteijn' <Birgit at westhawk.co.uk>
CC: 	'Tim Panton' <thp at westhawk.co.uk>


Here is the code for compare:
Assumes that asn objects are all positive numbers, e.g.,
0-9+(\.[0-9]+)*

       *public* *int* compareTo (AsnObjectId b) {
             *if* (b == *null*)
                 *throw* *new* NullPointerException("Trying to compare 
with null");

             *int* aElts = getSize();
             *int* bElts = b.getSize();

             *if* ((aElts == 0) && (bElts > 0))
                 *return* -1;

             *if* ((bElts == 0) && (aElts > 0))
                 *return* 1;

             *for* (*int* i = 0; (i < aElts) && (i < bElts); i++) {
                 *if* (getElementAt(i) != b.getElementAt(i))
                     *return* (getElementAt(i) > b.getElementAt(i)) ? 1 
: -1;
             }
             // equal to the end of one object
             *if* (aElts > bElts)
                 *return* 1;
             *else* *if* (bElts > aElts)
                 *return* -1;

             // both objects same
             *return* 0;
         }


-----Original Message-----
From: snmp-bounces at snmp.westhawk.co.uk
[mailto:snmp-bounces at snmp.westhawk.co.uk] On Behalf Of Josh Bers
Sent: Thursday, May 01, 2008 2:24 PM
To: 'List for discussion of the Westhawk SNMP stack'
Subject: [snmp] Making AsnObjectId comparable

I would vote for making the AsnObjectId comparable to help in situations
where the stack is serving as an agent in order to order OID's correctly 
in a MIB. facilitating insertion into standard Java ordered container 
classes.



Josh



Josh Bers

Senior Engineer, Mobile Networking Systems

BBN Technologies

web: www.bbn.com ph: (617) 873-4262 fax: (617) 873-4523



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