Comments on: Scribble on a Pull-turns-push architecture based on http – registering web applications as event listeners

By: Marco Gralike

Marco Gralike — Wed, 09 Jan 2008 12:14:25 +0000

Another alternative, which is probably even easier to use (it is already buildin functionality), is using DBUri’s and/or XDBUri’s (http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14259/xdb15dbu.htm#sthref1873). It is possible to create a fast and easy HTTP/REST endpoints this way (http://forums.oracle.com/forums/thread.jspa?messageI

By: Marco Gralike

Marco Gralike — Wed, 09 Jan 2008 12:12:55 +0000

By: Marco Gralike

Marco Gralike — Wed, 09 Jan 2008 12:08:55 +0000

By the way, I hereby would propose to use the Oracle 11g Native Database Web Service (“XMLDB”) functionality, instead of the DBMS_EPG/PL/SQL Gateway, because it has the advantage that it is kernel build-in (buildin C, instead of based on a database servlet): http://tardate.blogspot.com/2007/08/revisiting-11g-native-web-services.html . Another alternative, which is probably even easier to use (it is already buildin functionality), is using DBUri’s and/or XDBUri’s (http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14259/xdb15dbu.htm#sthref1873). It is possible to create a fast and easy HTTP/REST endpoints this way (http://forums.oracle.com/forums/thread.jspa?messageID=1884992&#1884992).

By: Marco Gralike

Marco Gralike — Wed, 09 Jan 2008 11:50:01 +0000

I really like the “Scribble” stuff, keep it up (or should I hope for a lot of Dutch traffic jams )

By: Lucas Jellema

Lucas Jellema — Wed, 09 Jan 2008 08:11:39 +0000

P3t0r
Thanks for your comment. Of course you are right. It was just a brainstorm of sorts. The most useful point probably would be to have a central component doing the pulling – collecting events from pull sources such as RSS feeds, HTML pages etc – and turn them into push events to listeners who have registered.The other thought is that almost anyone can implement an HTTP interface – from the simplest Servlet container, PHP engine to the Oracle Database – that can accept such pushed events. Setting up an ESB or even a JMS topic is considerably more complex for many organizations and/or developers. So basically what I was thinking was getting a very simple way of pushing events into any technology stack, without having to worry about the infrastructure or firewall.
regards,Lucas

By: p3t0r

p3t0r — Wed, 09 Jan 2008 08:03:53 +0000

This is basically the same as building your own ESB/Messaging solution… most ESBs (if not all) do have HTTP/REST-style endpoints, with or without HTTPS. And since most ESB’s are build arround a messaging infrastructure you get reliable asynchronous messaging for free…

I probably just don’t get what you’re trying to do