Extension talk:External Data/Archive 2017 to 2018

External data showing non-cached data but semantic data incorrect
I'm pulling data from twitter and marking the data using semantic mediawiki, and the external data is updating, but the semantic properties aren't updating. They aren't updating even when I hit the refresh tab. See:


 * http://ec2-174-129-9-164.compute-1.amazonaws.com/wiki/Twitter_searches
 * http://ec2-174-129-9-164.compute-1.amazonaws.com/wiki/Adeletiblier
 * http://ec2-174-129-9-164.compute-1.amazonaws.com/wiki/Special:Browse/Adeletiblier

Any idea why this is going on? --Ryan lane 03:11, 17 July 2009 (UTC)

Btw, if I actually modify the page, it updates the semantic data. Simple purges don't work though. --Ryan lane 03:15, 17 July 2009 (UTC)


 * Yes, that's a definite problem when using External Data in conjunction with SMW - the data, once retrieved, is stored in the SMW tables, and after that it becomes hard to update it. Refreshing pages won't work, because that doesn't lead to any database updates. At the moment, I think the best solution (and the one that some people already use) is to create a cron job to run the SMW script "SMW_refreshData.php" (which does update the database) at a regular interval, like once a day. I should add something to the extension page about that...


 * Ah, this solves my problem, thanks! --Ryan lane 13:51, 17 July 2009 (UTC)


 * By the way, your site's a great demonstration of the possibilities of External Data and SMW together - I might end up using it for demo purposes, assuming it stays up... Yaron Koren 13:44, 17 July 2009 (UTC)


 * Amazon EC2 is expensive ;). I put it up for demo purposes for a talk I'm giving at BarCampNOLA on community software development where SMW is the backend, SF is the frontend, templates are business logic, and Plotters and Gadgets are user writable javascript. It is unlikely I'll keep the site up unless I find some people who want to co-host (and co-pay). At some point I'll probably get a VPS. I have the database and wiki files saved, so I'll let you know the new site when I bring it up. --Ryan lane 13:51, 17 July 2009 (UTC)


 * Ah, okay. I'm glad to hear that you're spreading the word about the "extended SMW" system. By the way, you can host a wiki that uses all those extensions for free on Referata. Yaron Koren 14:19, 17 July 2009 (UTC)

Allowing non-REST APIs?
I'm sure I know the answer to this, but would it be possible for this to support non-REST APIs in the future? Something like SOAP or XML-RPC? --Ryan lane 13:57, 17 July 2009 (UTC)


 * I don't see why it wouldn't be possible... it just needs to be implemented, including coming up with a good way to express all the data being sent, via a parser function call (presumably something like #get_soap_data, etc.) Yaron Koren 14:21, 17 July 2009 (UTC)


 * Awesome. I may take a crack at this at some point in the future... --Ryan lane 17:37, 17 July 2009 (UTC)

Error when running SMW_refreshData.php
I'm getting the following error when I run SMW_refreshData.php:

Fatal error: Call to a member function getText on a non-object in /var/www/w/extensions/ExternalData/ED_ParserFunctions.php on line 20

Which is: $cur_page_name = $wgTitle->getText;

Do I have something misconfigured? --Ryan lane 20:39, 17 July 2009 (UTC)


 * Oh yes, sorry about that - this has come up as an issue before. There's a fix that needs to be applied to Semantic MediaWiki to get this working. In the file "/includes/storage/SMW_SQLStore2.php", under line 1278 ("foreach ($titles as $title) {"), you should add the following two lines:

global $wgTitle; $wgTitle = $title;
 * I should add that to the documentation as well; and of course add the patch to SMW. Yaron Koren 15:30, 18 July 2009 (UTC)