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[TENEO] IdentifierGenerator [message #425368]

Sat, 22 November 2008 18:44

Liviu-Marian Negrila

Messages: 53
Registered: July 2009

Member

Hello,

This is somewhat related to my earlier post (IPersistable interface with
a myid property that could get implemented by all entities in the model)

I tried to dig a little more and here is my "second" question reloaded:

1. Could I use the strategy property of the GenericGenerator to indicate
the use of a custom IdentifierGenerator ?

2. Could this custom IdentifierGenerator extend the TableHiLoGenerator?

3. Is there any way I could inject the name of the entity being
persisted into this custom TableHiLoGenerator? Note that the adnotation
will be made on the IPersistable interface.

Please see my earlier post for the spadcore.ecore attachment.

Thanks a lot for your patience
Liviu

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Re: [TENEO] IdentifierGenerator [message #425376 is a reply to message #425368]

Sun, 23 November 2008 06:50

Martin Taal

Messages: 5468
Registered: July 2009

Senior Member

Hi Liviu,
Yes the strategy attribute should have the class name of your IdentifierGenerator.

The IdentifierGenerator.generate method has a session and a object parameter. The object is the
entity which gets persisted. You can cast this object to EObject and ask for the eclass and use the
eclass name and epackage or use the classname.

Looking at the Hibernate source code I think it can make sense to implement your own
TableHiLoGenerator which combines the logic from the TableHiLoGenerator and TableGenerator and uses
the class/eclass as an additional parameter in the sql queries.

gr. Martin

Liviu wrote:
> Hello,
>
> This is somewhat related to my earlier post (IPersistable interface with
> a myid property that could get implemented by all entities in the model)
>
> I tried to dig a little more and here is my "second" question reloaded:
>
> 1. Could I use the strategy property of the GenericGenerator to indicate
> the use of a custom IdentifierGenerator ?
>
> 2. Could this custom IdentifierGenerator extend the TableHiLoGenerator?
>
> 3. Is there any way I could inject the name of the entity being
> persisted into this custom TableHiLoGenerator? Note that the adnotation
> will be made on the IPersistable interface.
>
> Please see my earlier post for the spadcore.ecore attachment.
>
> Thanks a lot for your patience
> Liviu

--

With Regards, Martin Taal

Springsite/Elver.org
Office: Hardwareweg 4, 3821 BV Amersfoort
Postal: Nassaulaan 7, 3941 EC Doorn
The Netherlands
Cell: +31 (0)6 288 48 943
Tel: +31 (0)84 420 2397
Fax: +31 (0)84 225 9307
Mail: mtaal@springsite.com - mtaal@elver.org
Web: www.springsite.com - www.elver.org

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Re: [TENEO] IdentifierGenerator [message #425380 is a reply to message #425376]

Sun, 23 November 2008 11:56

Liviu-Marian Negrila

Messages: 53
Registered: July 2009

Member

Yep, that hit the spot - its all answered and crystal clear.

I could just say thanks, but then again sounds better: You The Man.
Like Tyrell and Lorenzo all rolled into one.
Check this out - googled it specially for you:
http://www.theonion.com/content/node/34216

Liviu
Martin Taal wrote:
> Hi Liviu,
> Yes the strategy attribute should have the class name of your
> IdentifierGenerator.
>
> The IdentifierGenerator.generate method has a session and a object
> parameter. The object is the entity which gets persisted. You can cast
> this object to EObject and ask for the eclass and use the eclass name
> and epackage or use the classname.
>
> Looking at the Hibernate source code I think it can make sense to
> implement your own TableHiLoGenerator which combines the logic from the
> TableHiLoGenerator and TableGenerator and uses the class/eclass as an
> additional parameter in the sql queries.
>
> gr. Martin
>
> Liviu wrote:
>> Hello,
>>
>> This is somewhat related to my earlier post (IPersistable interface with
>> a myid property that could get implemented by all entities in the model)
>>
>> I tried to dig a little more and here is my "second" question reloaded:
>>
>> 1. Could I use the strategy property of the GenericGenerator to indicate
>> the use of a custom IdentifierGenerator ?
>>
>> 2. Could this custom IdentifierGenerator extend the TableHiLoGenerator?
>>
>> 3. Is there any way I could inject the name of the entity being
>> persisted into this custom TableHiLoGenerator? Note that the adnotation
>> will be made on the IPersistable interface.
>>
>> Please see my earlier post for the spadcore.ecore attachment.
>>
>> Thanks a lot for your patience
>> Liviu
>
>

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Re: [TENEO] IdentifierGenerator [message #425388 is a reply to message #425380]

Mon, 24 November 2008 05:21

Martin Taal

Messages: 5468
Registered: July 2009

Senior Member

Ha ha, thanks, :-),

gr. Martin

Liviu wrote:
> Yep, that hit the spot - its all answered and crystal clear.
>
> I could just say thanks, but then again sounds better: You The Man.
> Like Tyrell and Lorenzo all rolled into one.
> Check this out - googled it specially for you:
> http://www.theonion.com/content/node/34216
>
> Liviu
> Martin Taal wrote:
>> Hi Liviu,
>> Yes the strategy attribute should have the class name of your
>> IdentifierGenerator.
>>
>> The IdentifierGenerator.generate method has a session and a object
>> parameter. The object is the entity which gets persisted. You can cast
>> this object to EObject and ask for the eclass and use the eclass name
>> and epackage or use the classname.
>>
>> Looking at the Hibernate source code I think it can make sense to
>> implement your own TableHiLoGenerator which combines the logic from the
>> TableHiLoGenerator and TableGenerator and uses the class/eclass as an
>> additional parameter in the sql queries.
>>
>> gr. Martin
>>
>> Liviu wrote:
>>> Hello,
>>>
>>> This is somewhat related to my earlier post (IPersistable interface with
>>> a myid property that could get implemented by all entities in the model)
>>>
>>> I tried to dig a little more and here is my "second" question reloaded:
>>>
>>> 1. Could I use the strategy property of the GenericGenerator to indicate
>>> the use of a custom IdentifierGenerator ?
>>>
>>> 2. Could this custom IdentifierGenerator extend the TableHiLoGenerator?
>>>
>>> 3. Is there any way I could inject the name of the entity being
>>> persisted into this custom TableHiLoGenerator? Note that the adnotation
>>> will be made on the IPersistable interface.
>>>
>>> Please see my earlier post for the spadcore.ecore attachment.
>>>
>>> Thanks a lot for your patience
>>> Liviu
>>

--

With Regards, Martin Taal

Springsite/Elver.org
Office: Hardwareweg 4, 3821 BV Amersfoort
Postal: Nassaulaan 7, 3941 EC Doorn
The Netherlands
Cell: +31 (0)6 288 48 943
Tel: +31 (0)84 420 2397
Fax: +31 (0)84 225 9307
Mail: mtaal@springsite.com - mtaal@elver.org
Web: www.springsite.com - www.elver.org

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