Re: [platform-core-dev] Flexible Resource Model use case

[John Arthorne <John_Arthorne@xxxxxxxxxx>]

Exclusion is definitely an interesting
area to explore. Note that IResource#setHidden is not the best mechanism
for implementing this though. setHidden will hide the resource from the
UI, but under the covers it will still create the entire subtree and much
of the cost will be the same.  You can actually exclude subtrees today
using a linked resource pointing to the null file system, but there is
no UI for doing it. I think with a bit of UI work, exclusion support could
be added with very little effort even in 3.5 if there was interest in doing
it.

John

"Terence Parker" <eclipse.tparker@xxxxxxxxx>
Sent by: platform-core-dev-bounces@xxxxxxxxxxx

05/20/2008 01:20 PM

Please respond to
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Subject	[platform-core-dev] Flexible Resource Model use case

I haven't seen the following use case yet so I want to
add it to the discussion.

• A project needs to pull in code that is rooted in folder "A1"
• A1 is outside the user's workspace
• A1 contains many subfolders
• Only a handful of A1's subfolders are a part of the project
• IFolder.createLink() is called, linking the project to folder A1
• IFolder.createLink() starts a refresh that traverses _everything_ under A1
• The cost of traversing all of A1's subfolders is too high--IResource.setHidden() can only be called on subfolders after they have been pulled into the workspace

We
need a way to hook into the resource delta creation so that any nested
subfolder can be hidden _before_ that subfolder is traversed.

--Terry Parker_______________________________________________
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