Re: [Exist-open] Remove an attribute with a custom filter

[Patrick B. <pat...@jo...>]

Hi guys,

Thanks for the responses.

Adam, you're right, I can just pass along a new AttrList. I had tried this
method before and wasn't getting what I expected. Turns out some of my other
logic was preventing the proper output, and I mistook it for the AttrList
not propagating properly.


Cheers,

Patrick

On Wed, Aug 17, 2011 at 6:54 PM, Adam Retter <ad...@ex...> wrote:

> Dan that wont crack it im afraid, as you can only modify a document
> stream before storage using a Java Trigger, such things are not 'yet'
> possible from an XQuery Trigger...
>
> On 18 August 2011 00:17, Dan McCreary <dan...@gm...> wrote:
> > Hi Patrick,
> >
> > Here is one approach:
> >
> >
> http://en.wikibooks.org/wiki/XQuery/Filtering_Nodes#Removing_named_attributes
> >
> > It filters a document which can then be serialized.
> >
> > - Dan
> >
> > On Tue, Aug 16, 2011 at 7:24 PM, Patrick Bosek <pat...@jo...
> >
> > wrote:
> >>
> >> Hi Everyone,
> >>
> >> I'm trying to write a custom filter to remove attributes as a document
> is
> >> serialized. It seems pretty easy to add attributes, but I can't seem to
> find
> >> any way to remove them. Any suggestions?
> >>
> >>
> >>
> >>     public void startElement(QName qname, AttrList attribs) throws
> >> SAXException {
> >>         if (elementStack == 0) {
> >>             StoredNode node = getCurrentNode();
> >>             if (node != null) {
> >>                 DocumentImpl doc = node.getDocument();
> >>                 XmldbURI uri = doc.getURI();
> >>                 if (!uri.startsWith(XmldbURI.SYSTEM_COLLECTION_URI)) {
> >>                     if
> (doc.getCollection().getConfiguration(getBroker()).
> >>                             triggerRegistered(VersioningTrigger.class))
> {
> >>                         try {
> >>                             long rev =
> >> VersioningHelper.getCurrentRevision(getBroker(), doc.getURI());
> >>                             long time = System.currentTimeMillis();
> >>                             String key = Long.toHexString(time) +
> >> Long.toHexString(rev);
> >>
> >>
> >>                           --- Attributes being added   ------|
> >>
> >>
> >> V
> >>
> >>                             attribs.addAttribute(ATTR_REVISION, rev == 0
> ?
> >> "0" : Long.toString(rev));
> >>                             attribs.addAttribute(ATTR_KEY, key);
> >>                             attribs.addAttribute(ATTR_PATH,
> >> doc.getURI().toString());
> >>                         } catch (XPathException e) {
> >>                             LOG.error("Exception while retrieving
> >> versioning info: " + e.getMessage(), e);
> >>                         } catch (IOException e) {
> >>                             LOG.error("Exception while retrieving
> >> versioning info: " + e.getMessage(), e);
> >>                         }
> >>                     }
> >>                 }
> >>             }
> >>         }
> >>         ++elementStack;
> >>         nextListener.startElement(qname, attribs);
> >>     }
> >>
> >>
> >> --
> >> Patrick Bosek
> >> Jorsek Software
> >> Cell (585) 820 9634
> >> Office (877) 492 2960
> >> Jorsek.com
> >>
> >>
> >>
> >>
> ------------------------------------------------------------------------------
> >> Get a FREE DOWNLOAD! and learn more about uberSVN rich system,
> >> user administration capabilities and model configuration. Take
> >> the hassle out of deploying and managing Subversion and the
> >> tools developers use with it. http://p.sf.net/sfu/wandisco-d2d-2
> >> _______________________________________________
> >> Exist-open mailing list
> >> Exi...@li...
> >> https://lists.sourceforge.net/lists/listinfo/exist-open
> >>
> >
> >
> >
> > --
> > Dan McCreary
> > Semantic Solutions Architect
> > office: (952) 931-9198
> > cell: (612) 986-1552
> >
> >
> ------------------------------------------------------------------------------
> > Get a FREE DOWNLOAD! and learn more about uberSVN rich system,
> > user administration capabilities and model configuration. Take
> > the hassle out of deploying and managing Subversion and the
> > tools developers use with it. http://p.sf.net/sfu/wandisco-d2d-2
> > _______________________________________________
> > Exist-open mailing list
> > Exi...@li...
> > https://lists.sourceforge.net/lists/listinfo/exist-open
> >
> >
>
>
>
> --
> Adam Retter
>
> eXist Developer
> { United Kingdom }
> ad...@ex...
> irc://irc.freenode.net/existdb
>



-- 
Patrick Bosek
Jorsek Software
Cell (585) 820 9634
Office (877) 492 2960
Jorsek.com