I'm sorry, I didn't mean to criticize.  What I was trying to do is to validate 
that list=backlinks and prop=categories are querying for the same relationship 
if the backlinks namespace is set for categories, using blnamespace=14.  If 
they were two ways to query for the same relationship between pages, then the 
results should be the same, but they are not.

I've been able to verify that prop=categories returns the correct relationship, 
because the inverse (list=categorymembers) returns the inverse result.  If 
prop=categories indicates that A is a parent of B, then list=categorymembers 
correctly indicates that B is a child of A.

So what I'm trying to do is find the same relationship for portal pages 
(namespace=100).  list=categorymembers also correctly returns the children who 
are portals, but I don't know how to find the parents that are portals.

Thanks in advance,

Robert

-----Original Message-----
From: Andre Engels [mailto:andreeng...@gmail.com] 
Sent: Sunday, March 20, 2011 10:15 AM
To: Robert Crowe
Cc: MediaWiki API announcements & discussion
Subject: Re: [Mediawiki-api] Portals vs categories

On Sun, Mar 20, 2011 at 5:43 PM, Robert Crowe <rob...@ourwebhome.com> wrote:
> Thanks André, but after testing it seems that backlinks returns something 
> else.  For example this query:
>
> http://en.wikipedia.org/w/api.php?action=query&titles=Category:Voltaire&prop=categories
>
> Returns:
>
>  <query>
>    <pages>
>      <page pageid="3465227" ns="14" title="Category:Voltaire">
>        <categories>
>          <cl ns="14" title="Category:Categories named after French people" />
>          <cl ns="14" title="Category:Categories named after philosophers" />
>          <cl ns="14" title="Category:Categories named after writers" />
>        </categories>
>      </page>
>    </pages>
>  </query>
>
> But this query:
>
> http://en.wikipedia.org/w/api.php?action=query&list=backlinks&bltitle=Category:Voltaire&blnamespace=14&bllimit=500
>
> Returns:
>
>  <query>
>    <backlinks />
>  </query>
>
> If I just use "Voltaire" instead of "Category:Voltaire" then I think it's 
> looking at a different page, right?  The results are different, and don't 
> match the first query results:
>
>  <query>
>    <backlinks>
>      <bl pageid="3465227" ns="14" title="Category:Voltaire" />
>      <bl pageid="15582893" ns="14" title="Category:Novels by Voltaire" />
>    </backlinks>
>  </query>

You criticize my request because another request does not give the
same result as a third request... I understand less and less of what
you are trying to do.

-- 
André Engels, andreeng...@gmail.com


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