[Mod-pubsub-developer] Pushlets don't allow multiple subscriptions.

[Adam R. <Ad...@Kn...>]

It sounds like, from the conversation I'm forwarding below, that with =
Pushlets you can't subscribe to two topics at once.  (On the other hand, =
they do have hierarchical subscriptions, meaning you can subscribe to =
all the topics in a subtree.)

To do two subscriptions, Pushlets require you to make two client-side =
connections; I guess this has significant problems scaling.

  Adam


-----Original Message-----
From: pu...@ya... [mailto:pu...@ya...]
Sent: Thursday, February 13, 2003 8:40 AM
To: pu...@ya...
Subject: [pushlet] Digest Number 190


To Post a message, send it to:   pu...@eG...
To Unsubscribe, send a blank message to: pus...@eG...
------------------------------------------------------------------------

There are 2 messages in this issue.

Topics in this digest:

      1. Re: Subscribing to more than 1 subject?
           From: Raymond Pau <rp...@ya...>
      2. Re: Subscribing to more than 1 subject?
           From: Just van den Broecke <ju...@ju...>


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Message: 1
   Date: Wed, 12 Feb 2003 17:32:08 -0800 (PST)
   From: Raymond Pau <rp...@ya...>
Subject: Re: Subscribing to more than 1 subject?

Ji Just,

Just curious, what happen if I need to subscribe 2
separate unrelated subjects?

/activity
/iostatus

Do I have to resort to subscribing to '/' and
filtering off what I don't want?

TIA.

Raymond Pau

--- Just van den Broecke <ju...@ju...> wrote:
> Hi Raymond,
>=20
> Yes in your case you only need to subscribe to
> '/activity'
>=20
> Subscribing to a subject automatically subscribes a
> client to all child=20
> subjects. For example subscribing to '/' subscribes
> to _all_ subjects in=20
> the system (see also the pushlet examples page on
> http://www.pushlets.com).
>=20
> best,
>=20
> Just
>=20
> Raymond Pau  wrote:
> > Hi there,
> >=20
> > It is possible to subscribe to more than 1 subject
> for
> > each connection?
> >=20
> > I have the following tree structure:
> > /activity
> > /activity/alarm
> > /activity/timeclock
> >=20
> > I would like to have a jsp page that will update
> > automatically when an event occurs in anyone of
> the
> > above subjects but not for others.
> >=20
> > Regards,
> >=20
> > Raymond Pau
> >=20
> >=20
> >=20
> > To Post a message, send it to: =20
> pu...@eG...
> > To Unsubscribe, send a blank message to:
> pus...@eG...=20
> >=20
> > Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/

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Message: 2
   Date: Thu, 13 Feb 2003 10:01:04 +0000
   From: Just van den Broecke <ju...@ju...>
Subject: Re: Subscribing to more than 1 subject?

Hi Raymond,

Yes (in your case you have to filter).It is currently not possible to=20
subscribe to multiple subjects (although you may try on the client side=20
with two connections, each in a separate hidden frame and forwarding to=20
the same event catcher in the main page).
best,
Just

Raymond Pau wrote:
> Ji Just,
>=20
> Just curious, what happen if I need to subscribe 2
> separate unrelated subjects?
>=20
> /activity
> /iostatus
>=20
> Do I have to resort to subscribing to '/' and
> filtering off what I don't want?
>=20
> TIA.
>=20
> Raymond Pau
>=20
> --- Just van den Broecke <ju...@ju...> wrote:
>=20
>>Hi Raymond,
>>
>>Yes in your case you only need to subscribe to
>>'/activity'
>>
>>Subscribing to a subject automatically subscribes a
>>client to all child=20
>>subjects. For example subscribing to '/' subscribes
>>to _all_ subjects in=20
>>the system (see also the pushlet examples page on
>>http://www.pushlets.com).
>>
>>best,
>>
>>Just
>>
>>Raymond Pau  wrote:
>>
>>>Hi there,
>>>
>>>It is possible to subscribe to more than 1 subject
>>
>>for
>>
>>>each connection?
>>>
>>>I have the following tree structure:
>>>/activity
>>>/activity/alarm
>>>/activity/timeclock
>>>
>>>I would like to have a jsp page that will update
>>>automatically when an event occurs in anyone of
>>
>>the
>>
>>>above subjects but not for others.
>>>
>>>Regards,
>>>
>>>Raymond Pau
>>>
>>>
>>>
>>>To Post a message, send it to: =20
>>
>>pu...@eG...
>>
>>>To Unsubscribe, send a blank message to:
>>
>>pus...@eG...=20
>>
>>>Your use of Yahoo! Groups is subject to
>>
>>http://docs.yahoo.com/info/terms/
>=20
>=20
> __________________________________________________
> Do you Yahoo!?
> Yahoo! Shopping - Send Flowers for Valentine's Day
> http://shopping.yahoo.com
>=20
> To Post a message, send it to:   pu...@eG...
> To Unsubscribe, send a blank message to: =
pus...@eG...=20
>=20
> Your use of Yahoo! Groups is subject to =
http://docs.yahoo.com/info/terms/=20
>=20
>=20
>=20
>=20


--=20

--Just

Just van den Broecke          ju...@ju...
Just Objects B.V.             tel. +31 65 4268627
The Netherlands               http://www.justobjects.nl








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