{"id":2451,"date":"2012-04-14T14:19:51","date_gmt":"2012-04-14T09:19:51","guid":{"rendered":"http:\/\/www.chiragmehta.info\/chirag\/?p=2451"},"modified":"2012-04-16T22:27:58","modified_gmt":"2012-04-16T17:27:58","slug":"chatter-stream-or-chatter-ticker","status":"publish","type":"post","link":"https:\/\/www.chiragmehta.info\/chirag\/2012\/04\/14\/chatter-stream-or-chatter-ticker\/","title":{"rendered":"Chatter Stream or Chatter Ticker …"},"content":{"rendered":"\n\n\n
\"\"<\/td>\nWe have this amazing thing of\u00a0collaboration\u00a0inside Salesforce, the Chatter<\/strong> – an\u00a0amalgamation\u00a0of best features of Facebook and Twitter. \u00a0And to add, it’s for enterprise, so its Enterprise Collaboration<\/strong> Isn’t that awesome<\/em>!!! Chatter supports lot of things post, comments, likes, follows etc and \u00a0best part is its not just user posts, comments etc .. its data posts, comments etc i.e., even the data is part of the collaboration\u00a0. That adds to awesomeness<\/em>!<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

However, there’s been one feature which I been waiting for and always wanted to see which is auto refresh of posts (for techies – ajax refresh) without need to refresh the entire page. Without this feature\u00a0collaboration doesn’t seems to be complete and web2.0 type. \u00a0An alternative to auto refresh can be a stream or ticker<\/strong> (like we have Feed Ticker on facebook) which keeps scrolling and shows posts \/ comments happening around without need to refresh page.<\/p>\n

So I thought of building the same, and first thing I needed was a poller which can poll and see if there are any chatter posts, but that would have been too resource intensive, and would have died after few hours because of governor limits and bla … bla … And to save me, there came a really great feature The Streaming API<\/strong>. I’m loving it!<\/p>\n

Two lines about API –\u00a0Use\u00a0Streaming API<\/a>\u00a0to receive notifications for changes to\u00a0Salesforce\u00a0data that match a\u00a0SOQL\u00a0query you define in a secure and scalable way.\u00a0Streaming API is useful when you want notifications to be pushed from the server to the client based on criteria that you define.<\/p>\n

So what’s next, I was super excited to get all started to use Streaming API and poll Chatter objects. \u00a0I was able to get basic streaming API program working (after few discussions<\/a>\u00a0around streaming api with\u00a0Pat Patterson<\/a>, as the API had few issues in terms of documentation).<\/p>\n\n\n\n
In basic example, I created a PushTopic (a SOQL query that you want notifications about) of Account. Now as the objective is chatter stream, so I tried to create a PushTopic around chatter object, and here was entry of the Villain – PushTopic aren’t supported yet for Chatter objects<\/em><\/strong> (SF please enable the same @ earliest)<\/td>\n\"\"<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

So what next, \u00a0trigger<\/strong> the rescue man came to help. Developed few triggers which will do realtime snapshot of chatter objects, and then created push topic against these snapshot objects. \u00a0This way (though indirect way) I will be able to get push notifications (using streaming API) \u00a0of chatter posts…wow<\/strong>, finally I made it. I got the CHATTER STREAM or CHATTER TICKER<\/strong> ..<\/p>\n

The use case of this is endless, \u00a0sky is not the limit..<\/p>\n

\"ChatterTicker\"<\/a><\/p>\n

Road map:<\/p>\n