[Biojava-l] Getting features with the same Location

Richard Holland holland at eaglegenomics.com
Fri Dec 12 08:48:49 UTC 2008


OK, I didn't know that!

In which case there's no reason why at least the getters can't be
public. I'll get round to changing them at some point...

mark.schreiber at novartis.com wrote:
> 
> Are you sure about that?  Under the JPA spec (which Hibernate can comply
> with) the primary key is often public and settable.  I don't think
> Hibernate gets confused if you change it but I suspect  the programmer
> might.
> 
> There are cases where you would want to set it.  For example you
> retrieve record 1 change a few fields and then change the PK to 2 and
> then persist it back. You now have two separate records. Effectively a
> template copy. If you have auto PK generation you can simply make the PK
> = null and let the DB find a new PK for you.
> 
> Yes it can be a little bit dangerous if you don't think about it but it
> probably doesn't need to be private.
> 
> Even if it is can't there be a public getter?
> 
> - Mark
> 
> biojava-l-bounces at lists.open-bio.org wrote on 12/12/2008 12:28:11 AM:
> 
>> The rationale was to prevent it being changed by the programmer, because
>> if that happens then Hibernate gets seriously confused (it relies on the
>> PKs remaining constant whilst an object is in memory).
>>
>> Hilmar Lapp wrote:
>> >
>> > On Dec 11, 2008, at 10:02 AM, Richard Holland wrote:
>> >
>> >> Yes, the bioentry_id is private.
>> >
>> >
>> > What's the rationale for that? It's the primary key; why should it be
>> > forbidden to view it, even for derived classes?
>> >
>> > (For a Bioperl-db persistent object, the primary key is public and
>> > always accessible as $pobj->primary_key(). It can even be changed by the
>> > programmer, though of course you should know what you're doing when you
>> > decide to do that.)
>> >
>> >     -hilmar
>>
>> --
>> Richard Holland, BSc MBCS
>> Finance Director, Eagle Genomics Ltd
>> M: +44 7500 438846 | E: holland at eaglegenomics.com
>> http://www.eaglegenomics.com/
>> _______________________________________________
>> Biojava-l mailing list  -  Biojava-l at lists.open-bio.org
>> http://lists.open-bio.org/mailman/listinfo/biojava-l
> 
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-- 
Richard Holland, BSc MBCS
Finance Director, Eagle Genomics Ltd
M: +44 7500 438846 | E: holland at eaglegenomics.com
http://www.eaglegenomics.com/



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