xmlvm-users

[xmlvm-users] Annotations on Java members do not affect cross compiled JavaScript?

[Robert E. <ro...@li...>]

Hi,

I've been digging around in XMLVM primarily from the perspective of being interested in writing client side browser code in Java, and it's very impressive.  As far as I can see annotating a member of a Java class with a runtime retention annotation makes no difference whatsover to the resulting JavaScript - is that correct?  Is that in inherent limitation of JavaScript, or just something that is not yet supported?  If the latter, is it on the road map in any form?

A closer look suggests that actually neither the java.lang.annotation nor the java.lang.reflect packages are implemented in xmlvm2js, which I guess would make runtime retained annotations useless anyway as there would be no mechanism to interrogate them.  Any possibility of this happening?

Thanks for any thoughts,
Rob

Re: [xmlvm-users] Annotations on Java members do not affect cross compiled JavaScript?

[Robert E. <ro...@li...>]

Looking further it would seem that the xmlvm representation doesn't store any such annotation based data either.  Just trying to get a feel for what is and isn't possible.

On 7 Jul 2010, at 21:28, Robert Elliot wrote:

> Hi,
> 
> I've been digging around in XMLVM primarily from the perspective of being interested in writing client side browser code in Java, and it's very impressive.  As far as I can see annotating a member of a Java class with a runtime retention annotation makes no difference whatsover to the resulting JavaScript - is that correct?  Is that in inherent limitation of JavaScript, or just something that is not yet supported?  If the latter, is it on the road map in any form?
> 
> A closer look suggests that actually neither the java.lang.annotation nor the java.lang.reflect packages are implemented in xmlvm2js, which I guess would make runtime retained annotations useless anyway as there would be no mechanism to interrogate them.  Any possibility of this happening?
> 
> Thanks for any thoughts,
> Rob
> 
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Re: [xmlvm-users] Annotations on Java members do not affect cross compiled JavaScript?

[Arno P. <ar...@pu...>]

On 7/7/10 10:28 PM, Robert Elliot wrote:
> Hi,
>
> I've been digging around in XMLVM primarily from the perspective of being interested in writing client side browser code in Java, and it's very impressive.  As far as I can see annotating a member of a Java class with a runtime retention annotation makes no difference whatsover to the resulting JavaScript - is that correct?  Is that in inherent limitation of JavaScript, or just something that is not yet supported?  If the latter, is it on the road map in any form?

Annotations are mapped to XMLVM (the internal XML format used for 
representing byte codes) but apart from Objective-C, no other backends 
are making use of them. The main focus has been on the Objective-C 
backend. The JavaScript backend is 'dormant' in terms of active 
development and as you've noticed also does not support many classes 
from J2SE.

Arno