Re: [bdbxml] Document names....

Mark,

An interesting question.
What's going on is that when you return constructed nodes,
as you are in the second case, they no longer
belong to the document from the container.
They belong to a constructed document, which has
no name.

More in context, below...

> Howdy,
>     I want to know the names of the documents from which I'm getting
> results...
>     As long as there's no XML markup in my 'return' statement the  
> name of
> the doc can easily be pulled from the Meta Information - however as  
> soon as
> there's markup all of the Mea Info is lost.
>
> SO - using the perl API I do a:
>
>                 $container->putDocument($key, $file, $update_context);
>
> & then later:
>
> for $a in (collection('junit_goto.dbxml')//testsuite)
> return
>          $a/@time/text()
>
> I can the fetch the $key of each document from which this value  
> came via:
> $value->asDocument->getMetaData('http://www.sleepycat.com/2002/ 
> dbxml','name'
> , $val);
>
> Groovy!!
>
> HOWEVER as soon as I put markup in the return statement the 'name'  
> meta-data
> info is lost:
>
>
> for $a in (collection('junit_goto.dbxml')//testsuite)
> return
> <time>
>         { $a/@time/text() }
> </time>
>
> Bummer!  Iterating thru the MetaDataIterator returns nothing.
>
> So how can I get the key/name of the providing XML doc with markup  
> in the
> 'return' statement????

You can only return one thing, so you have to figure
out how to put the name in the constructed information you are  
returning.
First, you may want to use the syntax, "{string($a/@time)}" to get the
attribute value in the query above.

You can probably add it as an attribute of your time element - something
like this:
for $a in (collection('junit_goto.dbxml')//testsuite)
let $name := dbxml:metadata('dbxml:name',$a)
return
<time docname='{$name}'>
         { string($a/@time) }
</time>

You'll have noticed the way to get the document
name in the xquery expression.  Use it as you need.

Regards,

George

>
> Thanks!!
>     Mark
>



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