29 Jul
2010
29 Jul
'10
12:29 p.m.
Awesome, that works perfectly, thanks!
I do have a question though. How come one must use a loop in order to access elements in this way? It seems like the names of the documents in a database would be a sort of key that would allow constant time look ups, being that they must be unique. Especially since the hierarchy is there conceptually: database -> document -> root node -> children, so it's strange that something like: collection("db")/document("document-name")/root/child is not possible.
--
Ryan Lewis '09
Clarkson University
On Thu, Jul 29, 2010 at 11:42 AM, Michael Seiferle <
michael.seiferle@uni-konstanz.de> wrote:
> Hi Ryan,
> sorry for misleading you, I was tricked by our commands myself.
> Instead of basex:db('name') which opens the DB as a database (thus the
> first document is added to the context) please use the collection('name')
> command:
> > for $doc in collection('test')
> > return $doc
> Sorry for the inconvenience, the hint on using matches(document-uri(...
> should work correctly now.
> If you have any further questions feel free to ask.
> Kind regards
> Michael
>
>
> Am 29.07.2010 um 16:57 schrieb Ryan Lewis:
>
> > Hey,
> >
> > Thanks for the quick reply!
> >
> > I decided to do a simple query using basex:db(), and its results are...
> odd. Simply performing:
> >> for $doc in basex:db('yourdb')
> >> return $doc
> > only returns the first document in my database. I thought maybe the
> database was corrupt or something, so I tried:
> >> for $doc in /my_root_node
> >> return $doc
> > And that returned the entire structure of all documents in the database.
> >
> > Is that the normal functionality of basex:db()? If so, then I can not
> iterate through it as per your examples, since it will only see the first
> document.
> >
> > --
> > Ryan Lewis '09
> > Clarkson University
> >
> >
> > On Thu, Jul 29, 2010 at 10:42 AM, Michael Seiferle <
> michael.seiferle@uni-konstanz.de> wrote:
> > Hi there,
> >
> > the most convenient way to identify documents inside collections might be
> restricting the the query to a single document or a group of documents via
> matching the document-uri()
> >> for $doc in basex:db('yourdb')
> >> where matches(document-uri($doc),'test.xml')
> >> return $doc
> > Please note that the document-uri() function only evaluates
> document-nodes, to test against inner nodes you should use
> > base-uri($node) instead of document-uri():
> >
> >> for $node in basex:db('yourdb')//child
> >> where matches(base-uri($node),'test.xml')
> >> return $node
> >
> > As there is no standardized way of handling collections of XML documents
> we are still looking forward to feedback regarding this issue.
> >
> > Hope this helps, feel free to ask more otherwise.
> >
> > Kind regards
> > Michael
> >
> > Am 29.07.2010 um 16:29 schrieb cosmotron+basex@gmail.comcosmotron%2Bbasex@gmail.com
> :
> >
> >> If I add two documents to a BaseX DB, let's say normal.xml and
> normal2.xml, is there a way to refer to each one individually?
> >>
> >> I know about the doc() function, but it looks at the filesystem for
> their location, rather than in the database itself.
> >>
> >> For instance, if I query with this: doc("normal.xml")/name , then I will
> get an error about normal.xml not being found.
> >>
> >> I also tried: basex:db("my-db-name")/doc("normal.xml")/name and received
> the same error.
> >>
> >> Thanks for any help!
> >>
> >> _______________________________________________
> >> BaseX-Talk mailing list
> >> BaseX-Talk@mailman.uni-konstanz.de
> >> https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk
> >
> >
>
>