Re: NSDates, NSTimestamps and the Java-bridge
Re: NSDates, NSTimestamps and the Java-bridge
- Subject: Re: NSDates, NSTimestamps and the Java-bridge
- From: Ricardo Strausz <email@hidden>
- Date: Fri, 16 May 2003 19:37:20 -0500
Java doesn't support methods with a variable number of arguments as
do C-based languages. Does the Java-ObjC bridge support using a Java
method that maps to an ObjC method with a variable number of > arguments?
Good question! I do not know... I will find out and let you know.
Here is the problem: first, there are two NSArrays, one from Cocoa and
the other from Webobjects and they ARE NOT COMPATIBLE (e.g., one uses
nextObject and the other nextElement in their objectEnumerators);
That's not necessarily an incompatibility of the arrays. ObjC
NSArray's objectEnumerator returns an NSEnumerator object whereas Java
NSArray's objectEnumerator() returns a Enumeration object. If this is
a problem, you can iterate the old-fashioned way with a for loop.
That's not any more a problem (once you find out). But they are really
not compatible; I mean, in the Java side, if a method expects a
com.webobjects.foundation.NSArray (which is what EOF uses) and you
pases to it a com.apple.cocoa.foundation.NSArray (the one created by
the bridge from the ObjC side) it hangs (with a mistirious SIGBUS 10).
second, NSString and String parse differently NSCalendarDates and
NSTimeStamps, respectively. In ObjC it asks for its "string
description", and in the Java side... I do not know.
ObjC's "description" method is equivalent to Java's "toString()"
method.
I know. What I meant is that: in ObjC are equivalent
... @"the date is = %@", myDate
than
... @"the date is = %@", [myDate description]
But in Java it seams that it is not the same
..."the time stamp = %@", myTimeStamp
than
... "the time stamp = %@", myTimeStamp.toString()
Unfortunely, Cocoa/EO development is still full of inconcistencies...
That's why pioneers like you exist :-)
How shall I interpret this ;-?
God bles the Pandas... ji
Yours,
Dino
http://homepage.mac.com/strausz
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