Re: [GUSDEV] Concurrent inserts into GUS

[Jeetendra S. <so...@vb...>]

Steve,

Thanks for your reply.

No, I haven't tried such concurrent runs of plug-ins yet. However, I might
have to do so in the near future.

You said that objects written in one submit() function call are atomic.
So, if I add a NALocation object as a child of NAFeature object, and I
call submit() on NAFeature, do these two inserts become one atomic
transaction ?

Thanks,
Jeetendra.

On Fri, September 29, 2006 6:25 pm, sfi...@pc... wrote:
> jeetendra-
>
> no, they are not atomic.  in gus plugins whatever objects are written in
> one submit() function call are atomic.  but in this case it seems the
> features are written first and the locations second.
>
> however, i do not think this will cause inconsistent data.
>
> do you have inconsistent data?
>
> steve
>
> Quoting Jeetendra Soneja <so...@vb...>:
>
>
>>
>> I had a question regarding concurrent inserts into GUS. Are the inserts
>>  into GUS synchronized ? If I have multiple plug-ins inserting data at
>> the same time, into same tables, can this lead to inconsistent data ?
>> There are certain cases where the newly inserted primary key is
>> referenced by other tables. For example, if we are inserting features and
>> their locations, the plug-in inserts feature first, and uses the primary
>> key (na_feature_id) of the feature to insert its location(s). Are such
>> inserts done as one atomic and synchonized transaction ?
>>
>> Please let me know.
>>
>>
>> Thank you for your help,
>> Jeetendra.
>>
>>
>>
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-- 
Jeetendra Soneja
Research Associate (Software Engineer)
Virginia Bioinformatics Institute
0477 Washington St, Phase II - 162-04
Blacksburg, VA 24060, USA
Phone: (540)-231-2789
http://www.vbi.vt.edu