RE: [HAPI-devel] deep copy functionality

[Tripp, B. <Bry...@uh...>]

Hi Abe, 

Excellent advice, as always.  We could use something similar to clone(),
except that it wouldn't create a new object (so it would be copy(Object) :
void, instead of clone() : Object).  On the other hand why not define
type-specific copy methods for Message, Segment, and Type?  Would we want to
copy anything else?  You could define, for example, Segment.copyInto(Segment
otherSegment) and then implement it in AbstractSegment.  I guess it's a
trade-off between genericness and type checking (?). 

The only annoying thing is that if somebody had a Segment that didn't
inherit from AbstractSegment, they could have to implement copyInto again.
But this would be a small percentage of the total work, and they could
always cut and paste.  

Bryan 

-----Original Message-----
From: Abraham Tio [mailto:ti...@ta...]
Sent: Friday, December 14, 2001 10:09 AM
To: 'Abraham Tio'; 'Glock'; hl7...@li...
Subject: RE: [HAPI-devel] deep copy functionality


In further thought, how about an interface for all things copiable ?
Or add an abstract method to the base class common to all classes ? 

Abraham Tio
MD, Chief Technologist
Tacteon LTD.
http://www.tacteonltd.com


-----Original Message-----
From: hl7...@li...
[mailto:hl7...@li...] On Behalf Of Abraham
Tio
Sent: Friday, December 14, 2001 10:00 AM
To: 'Glock'; hl7...@li...
Subject: RE: [HAPI-devel] deep copy functionality

I would do both, and use the implementation as a pattern for copying
just about everything else that needs to be copied.  Today we're
thinking about deep copy for the purposes of echoing segments and
messages. Tomorrow, who knows why we'll be copying.  Much like the
clone() method in many java class interfaces, the uses are varied and
many.  

Does the pretense of the clone() method apply to hl7 message components
?

Abraham Tio
MD, Chief Technologist
Tacteon LTD.
http://www.tacteonltd.com


-----Original Message-----
From: hl7...@li...
[mailto:hl7...@li...] On Behalf Of Glock
Sent: Friday, December 14, 2001 8:02 AM
To: hl7...@li...
Subject: [HAPI-devel] deep copy functionality

All:

I'm working on the deep copy functionality (task 42332) and am seeking
feedback on where this should be implemented. I'm leaning toward making
it part of the Message interface since it must act on an entire segment
in addition to select fields.  Another option is to simply view the
segment as comprised of "all fields" and make it part of Segment
interface.

Thanks,
John Glock--


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