Re: General XPCOM question

Doug Turner wrote:
> Adrian Herscu wrote:
> 
>> Hi all,
>>
>> I have some COM background, and I'm interested to learn more about XPCOM.
>>
>> So far, I understand that XPCOM stands for Cross Platform COM.
>> But, I didn't understand what this really means.
>>
>> How exactly the "Cross Platform" goal is achieved?
>> Or, in other words, what rules should I obey (as a XPCOM componet
>> programmer) in order to build a "Cross Platform" component?
> 
> 
> 
> Components that are compiled are required to be recompiled on each 
> target platform.  This means that any functionality that is platform 
> dependent will require you to rewrite that part.  Components can be 
> implemented in a scripting language such as Javascript may be 
> distributed onto different platforms without any modifications.
> 
> The truth is that effort does go into thinking about cross platform 
> implications when writing a component.  Most things have been pretty 
> well abstracted by XPCOM, but when writing a component, you will have 
> places that may be #ifdef per platform.
> 
> Hope this helps,
> 
> Doug Turner
> [email protected]
> 
> 
So, write-once & run anywhere (WORA) is true only for JavaScript XPCOM 
components?
When I am implementing a XPCOM component in a compiled language (like 
C++), I have to maintain n platforms just for the compiling & linking 
process (and it doesn't matter if that component makes platform 
dependent calls!).
Can I make a XPCOM component to run on a JVM? Is there a bridge between 
JVMs and XPCOM?