tag:blogger.com,1999:blog-29701096.post115452144516403645..comments2023-10-30T08:55:18.553+01:00Comments on SOA and EDA: Context Sensitive Subscription - a patternJack van Hoofhttp://www.blogger.com/profile/10073941747649739657noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-29701096.post-1155105021645631312006-08-09T08:30:00.000+02:002006-08-09T08:30:00.000+02:00Hi Mike,It's merely about the abstract pattern of ...Hi Mike,<BR/><BR/>It's merely about the abstract pattern of context sensitive subscribtions; the idea. It's not (yet) about implementation, however a JMS-implementation will be the most likely in our case at this very moment. I'm not a JMS expert (yet). I'm sure you know much more about JMS-implementation issues of this pattern than I do. <BR/><BR/>JackJack van Hoofhttps://www.blogger.com/profile/10073941747649739657noreply@blogger.comtag:blogger.com,1999:blog-29701096.post-1155003380232479652006-08-08T04:16:00.000+02:002006-08-08T04:16:00.000+02:00Hi Jack,So I'm still confused.Perhaps I'm thinking...Hi Jack,<BR/><BR/>So I'm still confused.<BR/><BR/>Perhaps I'm thinking its JMS and it is not. When you re-subscribe will you use a new message selector or something?<BR/><BR/>Yes you must come to Portland ;)<BR/><BR/>Mikefuzzyhttps://www.blogger.com/profile/04442788840388847156noreply@blogger.comtag:blogger.com,1999:blog-29701096.post-1154892409610216822006-08-06T21:26:00.000+02:002006-08-06T21:26:00.000+02:00Hi Mike,The idea is to re-subscribe. In this patte...Hi Mike,<BR/><BR/>The idea is to re-subscribe. In this pattern the 'context sensitive' part is not a filter but a context-unique subscriber. <BR/><BR/>We want the endpoints only to receive relevant messages. This makes the solution more scalable and - compared to the filter-solution - it decreases the load on the <I>mobile</I> network and at the endpoints tremendously.<BR/><BR/>We think that's the most generic, flexible and scalable solution.<BR/><BR/>Jack<BR/><BR/>P.s.<BR/>When I'll ever get to Portland Oregon I will visit "Sip & Kranz' to try their coffee...<BR/>;-)Jack van Hoofhttps://www.blogger.com/profile/10073941747649739657noreply@blogger.comtag:blogger.com,1999:blog-29701096.post-1154831732948094972006-08-06T04:35:00.000+02:002006-08-06T04:35:00.000+02:00Hi Jack,Not sure if I follow, but when you change ...Hi Jack,<BR/><BR/>Not sure if I follow, but when you change context, will you drop the subscription and re-subscribe? Or do you have a subscription for each train (as an example)?<BR/><BR/>Is the 'context sensitive' part just a filter? So the subscriber (or sync) receives the event, but just discards it (i.e., rather then sending it on to the application (from the diagram))?<BR/><BR/>Mikefuzzyhttps://www.blogger.com/profile/04442788840388847156noreply@blogger.com