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Re: [eclipse-incubator-e4-dev] [resources] Resource Folder filters
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Hi Terry,
Terry Parker wrote:
Hi Serge,
Having filtering at the EFS level (which is analogous to have it
at the Directory.Filter level discussed earlier in this thread) is
a nice addition, although it is only as long as a method such as
IFileStore. childStores(Filter, |int options, IProgressMonitor
monitor) is faster than the regular |IFileStore. childStores(|int
options, IProgressMonitor monitor).
This may be true for EFS implementations for remote file systems. For
local files, if we really get the resource filtering right I agree
that EFS-level filtering doesn't add much.
An additional challenge of EFS implementation of filters is that the
filtering code itself resides on the local machine, passed down from the
resource extension point, which poses a problem with performance anyway
with remote file systems since the filter has to have an IFileStore to
inspect its relevant properties before deciding to filter it out or not.
If I understand you correctly, the idea of IVisibleResource is
really a linked resource, is that correct?
IVisibleResource may not be the best name. I'm looking at
IVisibleResource to serve non-global, application-specific needs.
Currently IResource = IFileStore + metadata. IVisibleResource is
stripped of the underlying one-to-one relationship with an
IFileStore. It expreses logical parent/child relationships and
contains an optional reference to an IResource or IResourceProxy that
backs it.
This sounds like "groups" which we added to the core resource APIs
(basically works the same way as a folder linked resource pointing to
null), since they don't point to any IFileStore (and don't have any file
system location).
They are used in the same way as Visual Studio 'filters' and CodeWarrior
groups: to build the logical structure of the resources in a project.
You can read more about our contribution in the following blog entry:
http://sergebeauchamp.blogspot.com/2008/09/improving-linked-resources-in-gandymede.html
And in the following bug:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=229633
Serge.