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Posted to user@struts.apache.org by Ben Turner <be...@ultraworld.be> on 2004/02/15 13:26:34 UTC
persistent data storage - the right way
hello,
i have been looking (in vain) for a description how to implement database
access in struts correctly. i would like to use the DAO (data access object)
pattern in combination with datasources for connection pooling. however, i
am having a hard way figuring out how to implement the whole and to decouple
my actions from knowing about the implementation of the DB.
the example application bundled with struts uses a plugin to set up
everything in the application context - is this the right way to go about
things? i am planning on using postgresql for the moment but would like to
foresee possible changes in the future.
any examples or pointers in the right direction would be very much
appreciated.
thanks,
Ben.
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Re: persistent data storage - the right way
Posted by Paul Thomas <pa...@tmsl.demon.co.uk>.
On 15/02/2004 12:26 Ben Turner wrote:
> hello,
>
> i have been looking (in vain) for a description how to implement database
> access in struts correctly. i would like to use the DAO (data access
> object)
> pattern in combination with datasources for connection pooling. however,
> i
> am having a hard way figuring out how to implement the whole and to
> decouple
> my actions from knowing about the implementation of the DB.
The simple answer is that you don't. Struts has nothing to do with data
persistence. What I think you're really asking is how to implement
persistence in a web application.
>
> the example application bundled with struts uses a plugin to set up
> everything in the application context - is this the right way to go about
> things? i am planning on using postgresql for the moment but would like
> to
> foresee possible changes in the future.
Well, I suppose you could use the Struts Datasource plug-in if you feel
that's the way to go but I think you'll find most people use JNDI and the
container-supplied connection pool.
--
Paul Thomas
+------------------------------+---------------------------------------------+
| Thomas Micro Systems Limited | Software Solutions for the Smaller
Business |
| Computer Consultants |
http://www.thomas-micro-systems-ltd.co.uk |
+------------------------------+---------------------------------------------+
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R: persistent data storage - the right way
Posted by Leonardo Francalanci <lf...@simtel.ie>.
I think that with hibernate you don't need to write sql
code to save/update/delete your objects or to retrieve
objects by their id, with ibatis you have to write
all your sql code.
Example with hibernate (pseudo-code...):
session.find(MyObject, id);
MyObject.setProp1(newvalue)
session.save() // automatically execute an update on your db
You don't have to write a line of sql with hibernate...
(except for queries like "select from MyObject where age>23")
Anyway I'm not a Guru, so I could be wrong...
> -----Messaggio originale-----
> Da: Mark Lowe [mailto:mark.lowe@talk21.com]
> Inviato: lunedi 16 febbraio 2004 11.09
> A: Struts Users Mailing List
> Oggetto: Re: persistent data storage - the right way
>
>
> One advantage hibernate has over ibatis is xdoclet support. You can
> generate your mapping files from xdoclet comments which means that you
> have the mappings and java code in the same place.
> Perhaps there's ibatisdoclet but I haven't noticed it. Other advantages
> vs disadvantages I haven't a clue about as I've never used ibatis.
>
>
>
> On 16 Feb 2004, at 04:11, David Friedman wrote:
>
> > I use hibernate so, yes, I think it is a
> > good alternative. :)
> >
> > Regards,
> > David
> >
> > -----Original Message-----
> > From: lixin chu [mailto:lixin_chu@yahoo.com]
> > Sent: Sunday, February 15, 2004 8:56 PM
> > To: Struts Users Mailing List
> > Subject: Re: persistent data storage - the right way
> >
> >
> > is Hibernate another good alternative ?
> > --- Oliver Thiel <th...@gmx.de> wrote:
> >> Hi,
> >>
> >>
> >> you can use iBatis [http://www.ibatis.com/] and
> >> take a look at this example/tutorial:
> >> http://www.reumann.net/do/struts/ibatisLesson1
> >> (using: Struts - DAO - iBatis )
> >>
> >>
> >> I think this is what your looking for.
> >> Oliver
> >>
> >>
> >>> hello,
> >>>
> >>> i have been looking (in vain) for a description
> >> how to implement database
> >>> access in struts correctly. i would like to use
> >> the DAO (data access
> >>> object)
> >>> pattern in combination with datasources for
> >> connection pooling. however, i
> >>> am having a hard way figuring out how to implement
> >> the whole and to
> >>> decouple
> >>> my actions from knowing about the implementation
> >> of the DB.
> >>>
> >>> the example application bundled with struts uses a
> >> plugin to set up
> >>> everything in the application context - is this
> >> the right way to go about
> >>> things? i am planning on using postgresql for the
> >> moment but would like to
> >>> foresee possible changes in the future.
> >>>
> >>> any examples or pointers in the right direction
> >> would be very much
> >>> appreciated.
> >>>
> >>> thanks,
> >>>
> >>> Ben.
> >>>
> >>>
> >>>
> >>
> > ---------------------------------------------------------------------
> >>> To unsubscribe, e-mail:
> >> struts-user-unsubscribe@jakarta.apache.org
> >>> For additional commands, e-mail:
> >> struts-user-help@jakarta.apache.org
> >>>
> >>
> >> --
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> >> Virenschutz, 2,99 EUR/Monat...)
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> >>
> >>
> >>
> > ---------------------------------------------------------------------
> >> To unsubscribe, e-mail:
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> >>
> >
> >
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>
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Re: persistent data storage - the right way
Posted by Mark Lowe <ma...@talk21.com>.
One advantage hibernate has over ibatis is xdoclet support. You can
generate your mapping files from xdoclet comments which means that you
have the mappings and java code in the same place.
Perhaps there's ibatisdoclet but I haven't noticed it. Other advantages
vs disadvantages I haven't a clue about as I've never used ibatis.
On 16 Feb 2004, at 04:11, David Friedman wrote:
> I use hibernate so, yes, I think it is a
> good alternative. :)
>
> Regards,
> David
>
> -----Original Message-----
> From: lixin chu [mailto:lixin_chu@yahoo.com]
> Sent: Sunday, February 15, 2004 8:56 PM
> To: Struts Users Mailing List
> Subject: Re: persistent data storage - the right way
>
>
> is Hibernate another good alternative ?
> --- Oliver Thiel <th...@gmx.de> wrote:
>> Hi,
>>
>>
>> you can use iBatis [http://www.ibatis.com/] and
>> take a look at this example/tutorial:
>> http://www.reumann.net/do/struts/ibatisLesson1
>> (using: Struts - DAO - iBatis )
>>
>>
>> I think this is what your looking for.
>> Oliver
>>
>>
>>> hello,
>>>
>>> i have been looking (in vain) for a description
>> how to implement database
>>> access in struts correctly. i would like to use
>> the DAO (data access
>>> object)
>>> pattern in combination with datasources for
>> connection pooling. however, i
>>> am having a hard way figuring out how to implement
>> the whole and to
>>> decouple
>>> my actions from knowing about the implementation
>> of the DB.
>>>
>>> the example application bundled with struts uses a
>> plugin to set up
>>> everything in the application context - is this
>> the right way to go about
>>> things? i am planning on using postgresql for the
>> moment but would like to
>>> foresee possible changes in the future.
>>>
>>> any examples or pointers in the right direction
>> would be very much
>>> appreciated.
>>>
>>> thanks,
>>>
>>> Ben.
>>>
>>>
>>>
>>
> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail:
>> struts-user-unsubscribe@jakarta.apache.org
>>> For additional commands, e-mail:
>> struts-user-help@jakarta.apache.org
>>>
>>
>> --
>> GMX ProMail (250 MB Mailbox, 50 FreeSMS,
>> Virenschutz, 2,99 EUR/Monat...)
>> jetzt 3 Monate GRATIS + 3x DER SPIEGEL +++
>> http://www.gmx.net/derspiegel +++
>>
>>
>>
> ---------------------------------------------------------------------
>> To unsubscribe, e-mail:
>> struts-user-unsubscribe@jakarta.apache.org
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>>
>
>
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>
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RE: persistent data storage - the right way
Posted by David Friedman <hu...@ix.netcom.com>.
I use hibernate so, yes, I think it is a
good alternative. :)
Regards,
David
-----Original Message-----
From: lixin chu [mailto:lixin_chu@yahoo.com]
Sent: Sunday, February 15, 2004 8:56 PM
To: Struts Users Mailing List
Subject: Re: persistent data storage - the right way
is Hibernate another good alternative ?
--- Oliver Thiel <th...@gmx.de> wrote:
> Hi,
>
>
> you can use iBatis [http://www.ibatis.com/] and
> take a look at this example/tutorial:
> http://www.reumann.net/do/struts/ibatisLesson1
> (using: Struts - DAO - iBatis )
>
>
> I think this is what your looking for.
> Oliver
>
>
> > hello,
> >
> > i have been looking (in vain) for a description
> how to implement database
> > access in struts correctly. i would like to use
> the DAO (data access
> > object)
> > pattern in combination with datasources for
> connection pooling. however, i
> > am having a hard way figuring out how to implement
> the whole and to
> > decouple
> > my actions from knowing about the implementation
> of the DB.
> >
> > the example application bundled with struts uses a
> plugin to set up
> > everything in the application context - is this
> the right way to go about
> > things? i am planning on using postgresql for the
> moment but would like to
> > foresee possible changes in the future.
> >
> > any examples or pointers in the right direction
> would be very much
> > appreciated.
> >
> > thanks,
> >
> > Ben.
> >
> >
> >
>
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> > To unsubscribe, e-mail:
> struts-user-unsubscribe@jakarta.apache.org
> > For additional commands, e-mail:
> struts-user-help@jakarta.apache.org
> >
>
> --
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> Virenschutz, 2,99 EUR/Monat...)
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>
>
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Re: persistent data storage - the right way
Posted by lixin chu <li...@yahoo.com>.
is Hibernate another good alternative ?
--- Oliver Thiel <th...@gmx.de> wrote:
> Hi,
>
>
> you can use iBatis [http://www.ibatis.com/] and
> take a look at this example/tutorial:
> http://www.reumann.net/do/struts/ibatisLesson1
> (using: Struts - DAO - iBatis )
>
>
> I think this is what your looking for.
> Oliver
>
>
> > hello,
> >
> > i have been looking (in vain) for a description
> how to implement database
> > access in struts correctly. i would like to use
> the DAO (data access
> > object)
> > pattern in combination with datasources for
> connection pooling. however, i
> > am having a hard way figuring out how to implement
> the whole and to
> > decouple
> > my actions from knowing about the implementation
> of the DB.
> >
> > the example application bundled with struts uses a
> plugin to set up
> > everything in the application context - is this
> the right way to go about
> > things? i am planning on using postgresql for the
> moment but would like to
> > foresee possible changes in the future.
> >
> > any examples or pointers in the right direction
> would be very much
> > appreciated.
> >
> > thanks,
> >
> > Ben.
> >
> >
> >
>
---------------------------------------------------------------------
> > To unsubscribe, e-mail:
> struts-user-unsubscribe@jakarta.apache.org
> > For additional commands, e-mail:
> struts-user-help@jakarta.apache.org
> >
>
> --
> GMX ProMail (250 MB Mailbox, 50 FreeSMS,
> Virenschutz, 2,99 EUR/Monat...)
> jetzt 3 Monate GRATIS + 3x DER SPIEGEL +++
> http://www.gmx.net/derspiegel +++
>
>
>
---------------------------------------------------------------------
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__________________________________
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Re: persistent data storage - the right way
Posted by Oliver Thiel <th...@gmx.de>.
Hi,
you can use iBatis [http://www.ibatis.com/] and
take a look at this example/tutorial:
http://www.reumann.net/do/struts/ibatisLesson1
(using: Struts - DAO - iBatis )
I think this is what your looking for.
Oliver
> hello,
>
> i have been looking (in vain) for a description how to implement database
> access in struts correctly. i would like to use the DAO (data access
> object)
> pattern in combination with datasources for connection pooling. however, i
> am having a hard way figuring out how to implement the whole and to
> decouple
> my actions from knowing about the implementation of the DB.
>
> the example application bundled with struts uses a plugin to set up
> everything in the application context - is this the right way to go about
> things? i am planning on using postgresql for the moment but would like to
> foresee possible changes in the future.
>
> any examples or pointers in the right direction would be very much
> appreciated.
>
> thanks,
>
> Ben.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: struts-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: struts-user-help@jakarta.apache.org
>
--
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