if all your jcr content (the copied one and the generated one) resided in 
target/classes then you proposal would be fine.
however it depends on the setup of your filevault xml project if this ist he 
case - and often it's not.

but if you have a build/resources/resource declaration in your project that 
copies everything to target/classes (which is not required, but is seen often 
in project setups), then it should work.

yes, it would make sense to have an optional configuration property in the 
maven-sling-plugin to support this use case.

stefan

>-----Original Message-----
>From: Julian Sedding [mailto:[email protected]]
>Sent: Thursday, December 14, 2017 9:35 AM
>To: Sling Developers List
>Subject: Re: Maven Sling Plugin - fsmount
>
>Hi Stefan
>
>Thanks again for your reply. However, I still don't understand why you
>think I need to use "files and folders" mode. I can run sling:fsmount
>on my content-package module, which creates a FILEVAULT_XML
>configuration, and then manually adjust the configuration to point to
>my "target/classes" directory instead of the
>"src/main/content/jcr_root" and this (seems?) to work fine in initial
>tests.
>
>What I would like to achieve is that I can (optionally) influence the
>configurations that sling:fsmount creates for me. I.e. the automatic
>discovery would not be changed, but it would be possible to create
>additional configurations or tweak discovered configurations (e.g.
>setting "Check Interval" lower can be useful with auto-refresh
>scenarios).
>
>I'll see if I can come up with a PR. Maybe it's easier to discuss it in
>code ;)
>
>Regards
>Julian
>
>
>On Wed, Dec 13, 2017 at 5:23 PM, Stefan Seifert <[email protected]>
>wrote:
>> currently the goal is to provide a "full automatic experience" - when
>calling "sling:fsmount" on a maven project it is detected automatically if
>it is a Sling-Initial-Content or filevault project and creates the OSGi
>mapping accordingly.
>>
>> you need a custom additional mapping beyond this automatic. this is
>already possible by creating a manual mapping in the osgi configuration,
>but in your case only for the "files and folder" mode, without interpreting
>.content.xml files - not sure if this is enough.
>>
>> if you need more i suppose it would not be too hard to extend the
>existing mapping configuration to support additional folders. perhaps an
>new mapping type or a variant of the filevault mapping type which does not
>rely on the filter.xml, but allows to specify the source path and the
>repository target path manually. this has to be added in the fsresource
>implementation; i'm not sure if it makes sense to integrate this special
>usecase also in the logic of the sling:fsmount goal.
>>
>> stefan
>>
>>
>>>-----Original Message-----
>>>From: Julian Sedding [mailto:[email protected]]
>>>Sent: Wednesday, December 13, 2017 2:32 PM
>>>To: Sling Developers List
>>>Subject: Re: Maven Sling Plugin - fsmount
>>>
>>>Hi Stefan
>>>
>>>Thanks for your reply.
>>>
>>>I was hoping that we could avoid generating build artifacts inside the
>>>"src" folder. It just doesn't feel quite right. Also, I would like to
>>>locate the respective "*.ts" and "*.scss" files in the location where
>>>the compiled "*.js" and "*.css" files end up. I think that makes it
>>>easier to understand, especially for frontend devs with only a
>>>superficial understanding of Sling/AEM.
>>>
>>>Is there a big technical obstacle with adding the ability for custom
>>>additional mappings with filevault support? If so, can you expalin
>>>and/or give me a pointer? I'm happy to invest some time into improving
>>>the plugin, so any guidance is appreciated.
>>>
>>>Thanks
>>>Julian
>>>
>>>
>>>
>>>On Wed, Dec 13, 2017 at 1:23 PM, Stefan Seifert <[email protected]>
>>>wrote:
>>>> hello julian.
>>>>
>>>> yes, i think your assumptions are right. in case of filevault project
>>>there is currently no way to add some "custom additional mappings"
>>>(although you could of course add an additional mapping with only "files
>>>and folders" only for your target dir, when there are no content fragment
>>>in xml or json files involved.
>>>>
>>>> we solve this problem usually this way: configure the frontend tooling
>to
>>>compile directly in the destination folder (e.g.
>>>src/main/content/jcr_root), but exclude this folder from SCM management
>by
>>>providing a path for the affected subfolder containing compiled code via
>>>.gitignore. is this an option for you as well?
>>>>
>>>> stefan
>>>>
>>>>>-----Original Message-----
>>>>>From: Julian Sedding [mailto:[email protected]]
>>>>>Sent: Wednesday, December 13, 2017 11:47 AM
>>>>>To: Sling Developers List
>>>>>Subject: Maven Sling Plugin - fsmount
>>>>>
>>>>>Hi all and Stefan in particular
>>>>>
>>>>>I am in the process of setting up a maven build for a joint frontend
>>>>>(HTML, CSS, JS) and backend team (Sling / AEM).
>>>>>
>>>>>The goals for the frontend team workflow are:
>>>>>
>>>>>- use Node.js based tooling / frontend build (integrated using
>>>>>frontend-maven-plugin - works)
>>>>>- develop HTL templates and sample content (JSON via initial content
>>>>>and fsmount)
>>>>>- develop using SCSS and TypeScript, which is compiled to CSS and JS
>>>>>by the frontend build into target/classes
>>>>>- use as little maven as possible
>>>>>- day to day work is done on the FS using Node.js based tooling with a
>>>>>"watch" job and with live-reload or similar
>>>>>- development speed is essential, i.e. changes done on FS should be
>>>>>visible in a browser in < 500ms
>>>>>
>>>>>Due to the compilation step, which generates CSS and JS in
>>>>>target/classes, I would like mvn sling:fsmount to set up a FS resource
>>>>>provider mapping for target/classes rather than
>>>>>src/main/content/jcr_root (or maybe both, with service.ranking so that
>>>>>target/classes is preferred). As far as I can see the "fsmount" goal
>>>>>currently determines which configurations to create from the
>>>>>filter.xml file (in case of filevault packages), but there is no way
>>>>>to explicitly configure other mappings.
>>>>>
>>>>>- Are my above assumptions regarding the state of "fsmount" correct?
>>>>>- Do you think extending the fsmount config to allow for explicit
>>>>>mappings would be useful?
>>>>>- Do you have experiences to share with similar setups?
>>>>>
>>>>>Regards
>>>>>Julian
>>>>
>>

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