Geir Magnusson Jr wrote:
Alexey Varlamov wrote:
2006/7/14, Richard Liang <[EMAIL PROTECTED]>:
Magnusson, Geir wrote:
-----Original Message-----
From: Alexei Zakharov [mailto:[EMAIL PROTECTED]
Sent: Thursday, July 13, 2006 10:19 AM
To: [email protected]; [EMAIL PROTECTED]
Subject: Re: [classlib] compatibility nuances
That our "not in any particular
order" is different than the "not in any particular order"
that the RI
does? I'm not trying to make light of it, but it sounds like all is
correct.
Right, from the spec point of view everything is correct. But I'd
like to say that our particular order differs from RI particular order
(and such behavior conforms to spec). My next statement is: there are
stupid apps that rely on the particular order
returned by RI (regardless of spec). I know one already. The question
is: should we care or not?
Can you figure out what their order is? If so, I'd use that since we
are free to do what we want, and if someone does depende on this, it's
one less change, and it's spec compliant.
As well as I know, the order is what the methods are declared in java
source. (Cannot find any document currently ;-) )
IIRC, Sun and JRockit behave differently to this matter, JRockit's VM
reports methods in reversed order. Besides, there are 2 APIs:
getDeclaredMethods() and getMethods() - we should consider both if we
really care. And detecting "right" order for the last is tedious -
taking into account variety of heritable methods (declared directly,
inherited from superclass(es), inherited from superinterface(s),
inherited from superinterfaces of superclasses).
What does j9 do?
For getDeclaredMethods(), J9 has the same behavior as RI. For
getMethods, J9 and RI behave differently. ;-) But it's not so hard
to summarize RI's rule of method order. Am I wrong?
Best regards,
Richard
I believe we need a bit stronger motivation for scratching this issue,
than a blunt testcase - some real-world application.
I agree that this isn't a critical issue, but a "nice to have". Maybe
we see what J9 does, and follow the majority (if we spend the time...)?
geir
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Richard Liang
China Software Development Lab, IBM
