| [Acceleo] Unexpected inheritance behavior [message #641792] |
Sun, 28 November 2010 00:56  |
Eclipse User |
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I was able to successfully use the inheritance mechanism initially, but have run into some unexpected behavior.
If I try to create a template that looks like this, everything works as expected.
[module a extends b]
[template public ItemActivity(i : ItemActivity) overrides Activity]
[file ('/src/abc/'.concat(i.name.concat('.java')), false, 'Cp1252')]
[doOtherTemplateStuff(i)/]
[/file]
[/template]
[template public doOtherTemplateStuff(i : ItemActivity) overrides doOtherTemplateStuff]
[super/]
xyzzy1
[/template]
[/module]
[module b]
[template public Activity(a : Activity)]
[doOtherTemplateStuff(a)/]
[/template]
[template public doOtherTemplateStuff(a : Activity)]
[super/]
xyzzy2
[/template]
[/module]
If on the other hand I do this (changing [doOtherTemplateStuff(i)/] to [super/]:
[module a]
[template public ItemActivity(i : ItemActivity) overrides Activity]
[file ('/src/abc/'.concat(i.name.concat('.java')), false, 'Cp1252')]
[super/]
[/file]
[/template]
[template public doOtherTemplateStuff(i : ItemActivity) overrides doOtherTemplateStuff]
[super/]
xyzzy1
[/template]
[/module]
[module b]
[template public Activity(a : Activity)]
[doOtherTemplateStuff(a)/]
[/template]
[/module]
[template public doOtherTemplateStuff(a : Activity)]
xyzzy2
[/template]
[/module]
then I get no output. What am I missing?
Thanks!
Jeff
[Updated on: Mon, 29 November 2010 14:11] by Moderator |
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| Re: [Acceleo] Unexpected inheritance behavior [message #642169 is a reply to message #642093] |
Tue, 30 November 2010 03:27  |
| Eclipse User |
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Jeff,
I must admit the calls to "super" aren't something that have been
thoroughly tested. I cannot test ATM and do not remember exactly the
code behind these ... thus my requesting that you file a bug :p.
There is a possibility the problem lies in the arguments passed to
"super"... but I'll have to check the code before answering for sure.
Laurent Goubet
Obeo
On 29/11/2010 20:07, glenviewjeff wrote:
> Thanks as always for the prompt response. I apologize for the hastily
> typed example; I did make a typo and will edit it for future readers.
> It's module a that extends module b, and module b's template shouldn't
> have an overrides statement.
> I will file a bug for this. I would think this is a common use case, or
> am I missing something? How else would you capture common behavior that
> spans multiple files/paths?
>
> I had been suspecting that the problem was that I wasn't able to pass
> the "i" ItemActivity parameter in the super call that is expecting
> Activity. (ItemActivity specializes Activity if this wasn't already
> obvious.) Is the parameter implicitly passed anyhow?
> Thanks,
> Jeff
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