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Teneo: It is impossible to specify queries order for Hibernate resource [message #68367]

Fri, 19 January 2007 14:15

Ilya Klyuchnikov

Messages: 74
Registered: July 2009

Member

I load very big model from db.

I have optimized the queries (and their order) for loading model. But
HibernateResource is agnostic to query order cause when it parses URI it
puts queries into HashSet and then cannot restore order of queries.

Can it be solved?

Thanks

Ilya

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Re: Teneo: It is impossible to specify queries order for Hibernate resource [message #68387 is a reply to message #68367]

Fri, 19 January 2007 14:29

Eclipse User

Originally posted by: merks.ca.ibm.com

Ilya,

Not that I know any of the details, but perhaps if a LinkedHashSet were
used, the order would be more deterministic...

Ilya Klyuchnikov wrote:
> I load very big model from db.
>
> I have optimized the queries (and their order) for loading model. But
> HibernateResource is agnostic to query order cause when it parses URI
> it puts queries into HashSet and then cannot restore order of queries.
>
> Can it be solved?
>
> Thanks
>
> Ilya

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Re: Teneo: It is impossible to specify queries order for Hibernate resource [message #68395 is a reply to message #68387]

Fri, 19 January 2007 16:10

Martin Taal

Messages: 5468
Registered: July 2009

Senior Member

Ilya,
What happens is the following: the parameters in the queryset (of the uri) are put in a hashmap
(keyed on parameter name). The getqueries method then retrieves the query parameters from the
hashmap. I can change this by using a treemap instead of a hashmap. This is a small change and will
make the retrieval order of the queries more deterministic (in order of their parameter name).
Please enter a bugzilla for this as well.

Btw you can override getqueries to implement this yourselve for now.

gr. Martin

Ed Merks wrote:
> Ilya,
>
> Not that I know any of the details, but perhaps if a LinkedHashSet were
> used, the order would be more deterministic...
>
>
> Ilya Klyuchnikov wrote:
>> I load very big model from db.
>>
>> I have optimized the queries (and their order) for loading model. But
>> HibernateResource is agnostic to query order cause when it parses URI
>> it puts queries into HashSet and then cannot restore order of queries.
>>
>> Can it be solved?
>>
>> Thanks
>>
>> Ilya

--

With Regards, Martin Taal

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Re: Teneo: It is impossible to specify queries order for Hibernate resource [message #601411 is a reply to message #68367]

Fri, 19 January 2007 14:29

Ed Merks

Messages: 33140
Registered: July 2009

Senior Member

Ilya,

Not that I know any of the details, but perhaps if a LinkedHashSet were
used, the order would be more deterministic...

Ilya Klyuchnikov wrote:
> I load very big model from db.
>
> I have optimized the queries (and their order) for loading model. But
> HibernateResource is agnostic to query order cause when it parses URI
> it puts queries into HashSet and then cannot restore order of queries.
>
> Can it be solved?
>
> Thanks
>
> Ilya

Ed Merks
Professional Support: https://www.macromodeling.com/

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