list=alllinks confusion
I'm doing a research project for the summer and I've got to use get some data from Wikipedia, store it and then do some analysis on it. I'm using the Wikipedia API to gather the data and I've got that down pretty well.
What my questions is in regards to the links-alllinks
option in the API doc here
After reading the description, both there and in the API itself (it's down and bit and I can't link directly to the section), I think I understand what it's supposed to return. However when I ran a query it gave me back something I didn't expect.
Here's the query I ran:
http://en.wikipedia.org/w/api.php?action=query&prop=revisions&titles=google&rvprop=ids|timestamp|user|comment|content&rvlimit=1&list=alllinks&alunique&allimit=40&format=xml
Which in essence says: Get the last revision of the Google page, include the id, timestamp, user, comment and content of each revision, and return it in XML format. The allinks (I thought) should give me back a list of wikipedia pages which point to the google page (In this case the first 40 unique ones).
I'm not sure what the policy is on swears, but this is the result I got back exactly:
<?xml version="1.0"?>
<api>
<query><normalized>
<n from="google" to="Google" />
</normalized>
<pages>
<page pageid="1092923" ns="0" title="Google">
<revisions>
<rev revid="366826294" parentid="366673948" user="Citation bot" timestamp="2010-06-08T17:18:31Z" comment="Citations: [161]Tweaked: url. [[User:Mono|Mono]]" xml:space="preserve">
<!-- The page content, I've replaced this cos its not of interest -->
</rev>
</revisions&g开发者_Go百科t;
</page>
</pages>
<alllinks>
<!-- offensive content removed -->
</alllinks>
</query>
<query-continue>
<revisions rvstartid="366673948" />
<alllinks alfrom="!2009" />
</query-continue>
</api>
The <alllinks>
part, its just a load of random gobbledy-gook and offensive comments. No nearly what I thought I'd get. I've done a fair bit of searching but I can't seem to find a direct answer to my question.
- What should the
list=alllinks
option return? - Why am I getting this crap in there?
You don't want a list; a list is something that iterates over all pages. In your case you simply "enumerate all links that point to a given namespace".
You want a property associated with the Google page, so you need prop=links instead of the alllinks crap.
So your query becomes:
http://en.wikipedia.org/w/api.php?action=query&prop=revisions|links&titles=google&rvprop=ids|timestamp|user|comment|content&rvlimit=1&format=xml
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