Eclipse Community Forums: TMF (Xtext) » pre-generate resource descriptions

Help

Home

Home » Modeling » TMF (Xtext) » pre-generate resource descriptions

Show: Today's Messages :: Show Polls :: Message Navigator

pre-generate resource descriptions [message #959155]

Fri, 26 October 2012 13:50

Vlad Dumitrescu

Messages: 431
Registered: July 2009
Location: Gothenburg

Senior Member

Hi!

Is there a way to use pre-generated resource descriptions? We have large projects, with hundreds of files and it takes forever to import them in the workspace. Since most files won't be changed in a session, it feels reasonable to let the build sytem generate resource descriptions for all, if Xtext can recognize them and load them instead of parsing the files (if file has older timestamp).

If it's possible, where do i have to look? Using Guice makes the code a bit difficult to navigate...

best regards,
vlad

Report message to a moderator

Re: pre-generate resource descriptions [message #959240 is a reply to message #959155]

Fri, 26 October 2012 15:04

Henrik Lindberg

Messages: 2509
Registered: July 2009

Senior Member

afaik - that is what Xtext does when running Builders in the IDE.
The metadata is saved between sessions as well.

But maybe you are not using the Xtext builder infrastructure?
- henrik

On 2012-26-10 15:50, Vlad Dumitrescu wrote:
> Hi!
>
> Is there a way to use pre-generated resource descriptions? We have large
> projects, with hundreds of files and it takes forever to import them in
> the workspace. Since most files won't be changed in a session, it feels
> reasonable to let the build sytem generate resource descriptions for
> all, if Xtext can recognize them and load them instead of parsing the
> files (if file has older timestamp).
>
> If it's possible, where do i have to look? Using Guice makes the code a
> bit difficult to navigate...
> best regards,
> vlad
>

Report message to a moderator

Re: pre-generate resource descriptions [message #959276 is a reply to message #959240]

Fri, 26 October 2012 15:34

Henrik Lindberg

Messages: 2509
Registered: July 2009

Senior Member

ah, maybe you meant that you would also like to avoid the build the very
first time files are seen in the workspace?

- henrik

On 2012-26-10 17:04, Henrik Lindberg wrote:
> afaik - that is what Xtext does when running Builders in the IDE.
> The metadata is saved between sessions as well.
>
> But maybe you are not using the Xtext builder infrastructure?
> - henrik
>
> On 2012-26-10 15:50, Vlad Dumitrescu wrote:
>> Hi!
>>
>> Is there a way to use pre-generated resource descriptions? We have large
>> projects, with hundreds of files and it takes forever to import them in
>> the workspace. Since most files won't be changed in a session, it feels
>> reasonable to let the build sytem generate resource descriptions for
>> all, if Xtext can recognize them and load them instead of parsing the
>> files (if file has older timestamp).
>>
>> If it's possible, where do i have to look? Using Guice makes the code a
>> bit difficult to navigate...
>> best regards,
>> vlad
>>
>

Report message to a moderator

Re: pre-generate resource descriptions [message #959602 is a reply to message #959276]

Fri, 26 October 2012 21:12

Vlad Dumitrescu

Messages: 431
Registered: July 2009
Location: Gothenburg

Senior Member

Hi Henrik,

Yes, I meant it as a step done "offline" so that the index is available when opening the workspace the first time.

Even that is quite slow, I get startup times longer with 30 seconds for just one project... When we get to the standard libraries, it will be even longer. It would be great if there was a way to do this faster, or in the background, or something...

regards,
Vlad

Report message to a moderator

Re: pre-generate resource descriptions [message #959814 is a reply to message #959602]

Sat, 27 October 2012 01:22

Henrik Lindberg

Messages: 2509
Registered: July 2009

Senior Member

Sorry, but I never had to figure out where things are stored, and if
they can be copied. Surely they are in the workspace metadata. Have not
seen any obvious place to import the caches - but OTOH I have never
looked for it explicitly.

- henrik

On 2012-26-10 23:12, Vlad Dumitrescu wrote:
> Hi Henrik,
>
> Yes, I meant it as a step done "offline" so that the index is available
> when opening the workspace the first time.
> Even that is quite slow, I get startup times longer with 30 seconds for
> just one project... When we get to the standard libraries, it will be
> even longer. It would be great if there was a way to do this faster, or
> in the background, or something...
>
> regards,
> Vlad
>

Report message to a moderator

Re: pre-generate resource descriptions [message #960241 is a reply to message #959814]

Sat, 27 October 2012 09:48

Vlad Dumitrescu

Messages: 431
Registered: July 2009
Location: Gothenburg

Senior Member

No problem, thanks anyway.

Yes, the cached data is in the workspace somewhere, but that doesn't mean that putting it there manually will make Xtext recognize it automatically. I hope it does, but one never knows.

As it's quite a bit of work to try it out, I feel better if I know I'm not trying something that is impossible Smile

regards,
Vlad

Report message to a moderator

Re: pre-generate resource descriptions [message #960389 is a reply to message #960241]

Sat, 27 October 2012 12:37

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

If you want to digg into the code:
org.eclipse.xtext.builder.builderState.PersistedStateProvider
org.eclipse.xtext.builder.builderState.EMFBasedPersister
org.eclipse.xtext.builder.builderState.AbstractBuilderState.load()

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

Report message to a moderator