Re: [bdbxml] Document names....

Great - I was trying to figure out how to query for the name but wasn't able
to figure out the syntax - thanks!
 
Any reason to use '{ string($a/@time) }' vs. '{ $a/@time/text() }' ??
Thanks again,
    Mark


On 6/30/05 3:22 PM, "George Feinberg" <[email protected]> wrote:

> 
> 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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