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Home » Modeling » M2T (model-to-text transformation) » [ACCELEO] Overwriting existing files?(Can Acceleo be configured to overwrite exsisting files?)
icon5.gif  [ACCELEO] Overwriting existing files? [message #670330] Fri, 13 May 2011 14:29 Go to next message
Harri T. is currently offline Harri T.Friend
Messages: 22
Registered: May 2011
Junior Member

Can Acceleo be configured to overwrite exsisting files? I've tried the UML to Java example of Acceleo 3. It does not rewrite existing Java files.

Re: [ACCELEO] Overwriting existing files? [message #670911 is a reply to message #670330] Mon, 16 May 2011 07:36 Go to previous messageGo to next message
Valerian Merkling is currently offline Valerian MerklingFriend
Messages: 71
Registered: May 2011
What does it do then ? It generate a new copy of the java file ? send an error ?

Acceleo usually rewrite the file, it will just no remove a old generated file if you have changed the file name in your template.

There is also a [protected /] option to prevent rewriting piece of code.
Re: [ACCELEO] Overwriting existing files? [message #670918 is a reply to message #670911] Mon, 16 May 2011 08:03 Go to previous message
Stephane Begaudeau is currently offline Stephane BegaudeauFriend
Messages: 458
Registered: April 2010
Location: Nantes (France)
Senior Member


If you generate a file and then relaunch your generation, the old file will be overwritten. If the old file is not generated anymore, we won't delete it.
If you have a piece of code in a protected area, this code will be protected from the overwriting. The same apply for a piece of code with a JMerge tag (like @generated NOT) in the documentation if you are generating Java.
If you have deleted from your generator the protected, the code inside of the protected area of a previously generated file that would be overwritten will be saved in a ".lost" file.

You can see part of this behavior in the video n°8 starting at 7min28s here.

Stephane Begaudeau, Obeo
Twitter: @sbegaudeau
Acceleo wiki:
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[Updated on: Mon, 16 May 2011 08:06]

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