Hey, When I get to write a generic one that others can be used, I 'll submit to jira.
I'm not sure how useful this is though.. almost verbatim tree traversal: http://en.wikipedia.org/wiki/Tree_traversal#Iterative_Traversal And of course, if there are many immediate children, memory might blow up (Queue will get large).. Probably proper way would be to spawn a thread and implement proper producer/consumer.. On Thu, Jun 16, 2011 at 12:28 PM, Justin Edelson <jus...@justinedelson.com>wrote: > Sam- > Care you supply a patch to include this? > > On Thu, Jun 16, 2011 at 7:35 AM, sam lee <skyn...@gmail.com> wrote: > > I ended up walking resource myself: > > > > private void visit(Resource resource) { > > //actually do something.. like, adding to sitemap. > > } > > > > > > public void walkBreathFirst(Resource resource) { > > final Queue<Resource> toVisit = new > > ConcurrentLinkedQueue<Resource>(); > > try { > > toVisit.add(resource); > > while (!toVisit.isEmpty()) { > > final Resource visitedResource = toVisit.remove(); > > visit(visitedResource); > > > > final Iterator<Resource> iter = > > visitedResource.listChildren(); > > while (iter.hasNext()) { > > toVisit.add(iter.next()); > > } > > } > > } catch (SitemapException e) { > > > > } > > } > > > > On Thu, Jun 16, 2011 at 9:47 AM, sam lee <skyn...@gmail.com> wrote: > > > >> Hey, > >> > >> I need to walk a large resource tree (for sitemap generation, for > example). > >> > >> I'm aware of javax.jcr.ItemVisitor .. But I want to visit Resources > >> instead, not Nodes. > >> I could use ItemVisitor and elevate Nodes to Resources using > >> ResourceResolver: > >> > >> @Override > >> public void visit(Node node) throws RepositoryException { > >> resolver.getResource(node.getPath()); > >> } > >> > >> > >> Is there a better way? I want to implement void visit(Resource > >> resource); if possible. > >> > >> If I were to write my own ResourceVisitor, I would use recursion. But is > >> recursion safe for a large tree? > >> Looking at source code of javax.jcr.util.TraversingItemVisitor, it uses > >> simple recursion too (with a queue for breathfirst traversal). > >> > >> What is a recommended way of walking a large resource tree? > >> > >> > >> > > >
