On Mon, May 19, 2008 at 5:25 AM, Jehan wrote: > I was thinking about a real estate website where I > subscribe to receive emails when they got a > garage close to my apartment and under > a given price. If you were using XEP-0060 wouldn't you just do this by adding something like a "query-string" field to the node configuration form? See possible stanza below:
<iq type="set" to="xmpp.example.com" id="sub1"> <pubsub xmlns="http://jabber.org/protocol/pubsub";> <subscribe node="real-estate" jid="[EMAIL PROTECTED]"> <options> <x xmlns="jabber:x:data" type="submit"> <field var="FORM_TYPE" type="hidden"> <value>http://jabber.org/protocol/pubsub#subscribe_options</value> </field> * <field var="title"> <value>Possible Garage</value> </field> <field var="query-string"> <value><![CDATA[ (price .lt. $500) & (size .eq. large)]></value> </field> ** * </x> </options> </subscribe> </pubsub> </iq> bob wyman On Mon, May 19, 2008 at 5:25 AM, JabberForum <[EMAIL PROTECTED]> wrote: > > I think this kind of feature has already been discussed mixed with other > topics. But I wanted to discuss it here. > > Currently you can configure your subscription (theoritically in the XEP > at least) very basically. Like "I want to receive the whole items, > nothing, the whole body or only an excerpt, etc.). But if you want to > have advanced configuration, you could "play" with subnodes, but this is > very limited. A tag and category system would be advantageous. > > Let me give the examples I was dealing with when I thought about this > all. First a blog with pubsub as I am writing a Wordpress plugin: > currently my plugin enables only to subscribe to all the posts, or all > the comments, or the comments of a given post (or absolutely everything > of course). For this, I made a global container node (let's call it G). > In this one, I have 2 subnodes: > - a leaf node with all the posts (P); > - a container node for comments (C), with inside leaf nodes for each > posts (P1, P2, etc.). > > So if I want to subscribe to everything, I subscribe to G, G/P for only > posts, G/C for all comments, and for instance G/C/P3 for all comments of > post 3 (these are not really the node names I chose of course). > > Imagine you want to provide a way to subscribe only to some categories. > For instance I like the blog posts of a guy about philosophy, but I > don't care when he speaks about nuclear physics because I don't > understand at all what he writes. Of course you could "emulate" > categories with subnodes once again; but then when a post belongs to > several categories, it will be copied to several nodes (and when > modified, don't forget to sync all "copies"); moreover if you subscribe > to both categories, you will receive the same publication several > times. > So the (or at least one) solution would be that all posts are in the > same nodes, but they can be categorized. So a subscriber subscribes to > the P node, then configure which categories interest him. And then the > "decision" to notify a subscriber will be done at server side. Each time > a new publication is done, the server will send it to any person whose > configuration agrees. > > This can be done with categories, with tags, but also with authors (on > multi-author blogs), etc. In fact the better system would allow > flexibility. > > You will do such configuration through your Jabber client, but also my > blog can generate such link: > xmpp: > pubsub.zemarmot.net?action=subscribe;node=home/zemarmot.net/jehan/blog/posts;categories=Jabber,Linux;tag=en > > If I click this link, my Jabber client will propose me to subscribe to > the given node and configure it to receive only posts categorized under > "Jabber" and "Linux", and tagged as "en" (because I would not speak any > other language). > > Another instance: I was thinking about a real estate website where I > subscribe to receive emails when they got a garage close to my > appartment and under a given price. Why couldn't such configuration be > available on a pubsub node which contains items to sell. And you > configure your subscription to be notified only about items which > interest you (under some price for instance, and in some category). > > What do you think of it? > > > -- > Jehan > ------------------------------------------------------------------------ > Jehan's Profile: http://www.jabberforum.org/member.php?userid=16911 > View this thread: http://www.jabberforum.org/showthread.php?t=95 > >
