Hi Paul,
The short answer is we don't support this scenario well.... If files with
identical names use the same deploy path, we pick one of the two (usually
the first defined in the component list).
Do you really see this as a primary user scenario? I completely
understand multiple src folders that are aggregated at publish time, but
not copies of the same file in seperate folders.
You would need a seperate component mapping for that individual file to
make it "persistence_1.xml".
What's missing here is a good validator that would catch these cases, and
provide quickfixes to rename the source or target.
Thoughts? - Chuck
Rational Java EE Tooling Team Lead
IBM Software Lab - Research Triangle Park, NC
Email: [EMAIL PROTECTED]
Phone: 919-254-1848 (T/L: 444)
Paul Fullbright <[EMAIL PROTECTED]>
Sent by: [EMAIL PROTECTED]
08/30/2007 02:55 PM
Please respond to
"General discussion of project-wide or architectural issues."
<wtp-dev@eclipse.org>
To
"General discussion of project-wide or architectural issues."
<wtp-dev@eclipse.org>
cc
Subject
Re: [wtp-dev] Getting an EMF resource from an ArtifactEditModel, given an
IFile and not a deploy location
Chuck,
Both the suggestion you originally provided and the fix in the code drop
work very well for the case that there is one source folder. I'm able to
calculate the deploy path for the file resource (previous suggestion) or
find the correct resource even if I only use the project relative source
path (fix from latest code). So, much thanks!
But this brings me to the issue of multiple source folders. We use the
EMF model of the resource to aid in its editing. We know how users can be
(if only we could eliminate users, development would be so much simpler),
and I'm pretty sure they'd want to edit files even if they're not playing
quite so nice with the one-source-folder paradigm, so we at least have to
consider the situation that they've set up multiple source folders.
If I use deploy path lookup, and I happen to have this setup:
src
|-META-INF
|-persistence.xml
src2
|-META-INF
|-persistence.xml
if I attempt to load the EMF resource for the second file, I'll actually
get the EMF resource for the first file. Not what you'd want if you're
editing the second one. Note that you can't *tell* that the EMF resource
you're getting for the second one is actually the EMF resource from the
first one (or at least I don't know how to tell.) Also note that if there
is *only* the second file, everything works great.
If I use relative source path lookup for the above example, the EMF
resource works great for the first file, but the normalized URI for the
second one is now ".../src/src2/META-INF/persistence.xml" and I get a
FileNotFoundException attempting to load the contents of my EMF resource.
This is also the case if *only* the second file exists.
So. What should our story be for multiple source folders? Is this
something that can be addressed in the WTP EMF code?
Paul Fullbright
Oracle Corp.
Eclipse Dali/Java Persistence Tools Development
[EMAIL PROTECTED]
Chuck Bridgham wrote:
Paul,
I beleive I fixed your issue with my code drop last night, can you try
again with your original uri? the normailization routine had some
problems.
- Chuck
Rational Java EE Tooling Team Lead
IBM Software Lab - Research Triangle Park, NC
Email: [EMAIL PROTECTED]
Phone: 919-254-1848 (T/L: 444)
Paul Fullbright <[EMAIL PROTECTED]>
Sent by: [EMAIL PROTECTED]
08/29/2007 06:38 PM
Please respond to
"General discussion of project-wide or architectural issues."
<wtp-dev@eclipse.org>
To
"General discussion of project-wide or architectural issues."
<wtp-dev@eclipse.org>
cc
Subject
Re: [wtp-dev] Getting an EMF resource from an ArtifactEditModel, given an
IFile and not a deploy location
Ack, sorry, was wrong there. It only uses that source URI for comparison
purposes (normalization.)
Paul Fullbright
Oracle Corp.
Eclipse Dali/Java Persistence Tools Development
[EMAIL PROTECTED]
Paul Fullbright wrote:
Are EMF resources referenced only by their *deployment* URI's? I seem to
recall seeing that they were. If so, is there any suggestion for having
more than one resource with the same deploy path, but different source
paths? Or is this pretty much just completely disallowed?
Actually, on further review, EMF resources are referenced (eventually, in
the ResourceSet) by their file location
("platform:/resource/ProjectName/src/META-INF/persistence.xml"), not their
deployment location. If there were a way to look up an EMF resource
through the edit model using this sort of URI, that's all that we would
need.
Paul Fullbright
Oracle Corp.
Eclipse Dali/Java Persistence Tools Development
[EMAIL PROTECTED]
Paul Fullbright wrote:
Chuck,
Because you are using the ArtifactEditModel.getResource api, we use our
own internal "module:" protocol when constructing the uri.
The resourceset has a URIConverter that knows how to normalize this uri
using the projects component model. The projects "root folder"
is used to determine the offset, and I'm guessing this project uses the
"src" folder. Have you tried using the uri "META-INF/persistence.xml"?
If we know what exact file we're looking for, then yes we can do that. For
example, when we're validating, we *know* we're looking for
"META-INF/persistence.xml". No problem. API works fine. And yes, in the
case of a jst.utility project, I believe the root folder is always "src".
Of course, we work with a number of module facets, so it's only "src" in
this specific case.
Our problem is that we can have multiple files, and they really could be
named anything or in just about any source or web content folder, if the
user so wishes. We build up our inter-resource (project-wide) model by
scanning through the workspace and picking up all the files that are of
interest to the JPA platform so that we can respond to file changes,
renames, etc. And we initialize the EMF models for those files at that
first scan, at which point we only have the file location. We could
*assume* certain things about the file's location and what folder it's in,
but I don't feel very comfortable about doing that.
So the ability to access the resource given only the file location is
pretty important.
Most of our uri's are static, so we don't need to calculate the offset
into the "deployed" path. But if you have an IFile instance of your
resource you can use:
IVirtualComponent component = ComponentCore.createComponent(project);
List folderList = Arrays.asList
(component.getRootFolder().getUnderlyingFolders()); // All the folders
that contribute to the root deployment path
IPath path = WorkbenchResourceHelperBase.getPathFromContainers(list,
anIFile.getFullPath()); // Will find the first match(folder) that contains
your IFile
I will try this out. Thanks.
Are EMF resources referenced only by their *deployment* URI's? I seem to
recall seeing that they were. If so, is there any suggestion for having
more than one resource with the same deploy path, but different source
paths? Or is this pretty much just completely disallowed?
Paul Fullbright
Oracle Corp.
Eclipse Dali/Java Persistence Tools Development
[EMAIL PROTECTED]
Chuck Bridgham wrote:
Paul - First I want to apologize for taking so long to respond... I'm
working on addressing these questions more regulary
There may be an issue here, but I first want to understand your
scenario...
Because you are using the ArtifactEditModel.getResource api, we use our
own internal "module:" protocol when constructing the uri.
The resourceset has a URIConverter that knows how to normalize this uri
using the projects component model. The projects "root folder"
is used to determine the offset, and I'm guessing this project uses the
"src" folder. Have you tried using the uri "META-INF/persistence.xml"?
Most of our uri's are static, so we don't need to calculate the offset
into the "deployed" path. But if you have an IFile instance of your
resource you can use:
IVirtualComponent component = ComponentCore.createComponent(project);
List folderList = Arrays.asList
(component.getRootFolder().getUnderlyingFolders()); // All the folders
that contribute to the root deployment path
IPath path = WorkbenchResourceHelperBase.getPathFromContainers(list,
anIFile.getFullPath()); // Will find the first match(folder) that contains
your IFile
Hope this helps... Chuck
Rational Java EE Tooling Team Lead
IBM Software Lab - Research Triangle Park, NC
Email: [EMAIL PROTECTED]
Phone: 919-254-1848 (T/L: 444)
Paul Fullbright <[EMAIL PROTECTED]>
Sent by: [EMAIL PROTECTED]
08/27/2007 03:37 PM
Please respond to
"General discussion of project-wide or architectural issues."
<wtp-dev@eclipse.org>
To
"General discussion of project-wide or architectural issues."
<wtp-dev@eclipse.org>
cc
Subject
[wtp-dev] Getting an EMF resource from an ArtifactEditModel, given an
IFile and not a deploy location
I'm trying to load an EMF resource from a project's (a jst.utility
project in this case, but this should work for any jst.* project) edit
model. I have the actual file, therefore also its full path or project
relative path, which in this case is "src/META-INF/persistence.xml".
When I call:
artifactEditModel.getResource(fileURI)
(where fileURI is the URI for the project relative path above,
"src/META-INF/persistence.xml")
the edit model normalizes the path to
"src/src/META-INF/persistence.xml", assuming that what I've given it is
the *deployment* path for the resource. It assumes, that since it can't
find the virtual file for "src/META-INF/persistence.xml", that it
doesn't exist, but that if it did exist, it would be at the same
relative location in the first source folder for the project. This
seems wrong, because I'd expect that it would first see if there's an
*actual* resource at the given location before trying to make such an
assumption, but maybe there's a reason for doing this that I don't
understand. So the end result is that the edit model tries to give me a
resource for the project relative location
"src/src/META-INF/persistence.xml" (which doesn't exist) instead of the
project relative location "src/META-INF/persistence.xml" (which does
exist).
Is there a way to either:
- easily find the deployment path for a source path? (If I give the
actual deployment path for the file "META-INF/persistence.xml", then the
normalized path calculated will be correct.)
or
- better specify the URI of my file resource so that the edit model
can find my EMF resource?
Thanks,
Paul Fullbright
Oracle Corp.
Eclipse Dali/Java Persistence Tools Development
[EMAIL PROTECTED]
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