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From ws_dev2001 <ws_dev2...@yahoo.com>
Subject Re: [scxml] some ways for storing the states, transitions and any hierarchical structure
Date Wed, 17 Jun 2009 14:23:51 GMT

Hi Nestor,
Has there been any update you have on state persistence for scxml ?
Regards,
R2D2.


Nestor Urquiza-3 wrote:
> 
> Yes I will keep you posted and in fact I am evaluating
> to use iBATIC (I posted the question to javaranch,
> iBATIC and Hibernate forums) because seems like iBATIC
> creates columns per fields from objects which makes
> the reporting easy if the way of storing is
> consistent.
> 
> However I really think that mysql 5.0 option is still
> a good one. I will wait for responses from the rest of
> the forums and I will be back with whatever approach I
> fillow and the results of course.
> 
> Thanks
> 
> --- Rahul Akolkar <rahul.akolkar@gmail.com> wrote:
> 
>> While there may be subscribers to this list that are
>> quite familiar
>> with hibernate, I'd also suggest asking (the
>> question below) on the
>> hibernate lists since this seems more appropriate
>> there.
>> 
>> But I imagine this to be of interest to [scxml]
>> users (it certainly is
>> to me), so if you do get things set up the way you
>> want with hibernate
>> and are so inclined, please feel free to add a page
>> to our wiki [1] so
>> it becomes commons knowledge.
>> 
>> Thanks,
>> -Rahul
>> 
>> [1]
>>
> http://wiki.apache.org/jakarta-commons/SCXML/HomePage
>> 
>> 
>> On 5/8/06, Nestor Urquiza <nestoru@yahoo.com> wrote:
>> > I have to decide for my project if it is worth it
>> to
>> > store some of my objects directly in mysql using
>> > Hibernate.
>> >
>> > The usecase is just a web application accepting
>> HTTP
>> > GET/POST requests and depending on given states it
>> > executes some code and move the client to a new
>> state
>> > (I am using commons-scxml [1] for this). Moving
>> from a
>> > starting state to an ending state the application
>> pass
>> > several internal states and I need to store the
>> whole
>> > history in a table.
>> >
>> > I could use mysql 5 UpdateXML() extractValue() UDF
>> > functions to store/retrieve the hierarchical data
>> but
>> > as an alternative I think storing objects directly
>> is
>> > a perfect approach. In fact I think ORM is a
>> pretty
>> > cool alternative to native xml storage.
>> >
>> > The real problem arrives when Reporting guys want
>> to
>> > query the mysql database for the states  I have
>> stored
>> > using Hibernate. I saw from Hibernate Tools there
>> is a
>> > console plugin for eclipse [2] that allows to
>> query
>> > the database using HSQL, however I am wondering if
>> > anyone knows about a way of using just plain SQL
>> from
>> > a mysql client to query data that is stored using
>> > Hibernate. I understand this could be done using
>> an
>> > UDF (User Defined Function).
>> >
>> > Any thoughts? Whatever idea you might have could
>> help
>> > a lot my storage options/decision.
>> >
>> > Thanks a lot!,
>> > Nestor Urquiza
>> >
>> > [1] http://jakarta.apache.org/commons/scxml/
>> > [2] http://www.hibernate.org/255.html
>> >
>> 
>>
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> 
> 
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