RE: Transaction question ?
No-- they're invoked in different transactions. Transactional activity maps directly to threads-- that is, the thread's id is the transaction id (so to speak). HTH, JP > -Original Message- > From: Stephen Davidson [mailto:[EMAIL PROTECTED]] > Sent: Martes, 18 de Septiembre de 2001 13:32 > To: Orion-Interest > Subject: Re: Transaction question ? > > > Eddie wrote: > > > > Hellu, > > > > Please some help on the following transaction scenario ?: > > > > I am receing some information through a HTTP post method. > The servlet, > > running as part of a J2EE application, calls a EJB method > A. The EJB method > > does some little processing. After this, it checks some > conditions, and > > might do some more processing in an other EJB method B > depending on the > > conditions (in the same method still). I want to call > method B in a thread, > > such that the client, performing the HTTP request, isn't > waiting too long. > > So I want to start method B in a thread, such that the > initial EJB method A > > returns. How does the transacion model looks like in this > case and it is > > wise to do it like this ? (My transaction attribute is set > to Required and I > > am using CMP). > > I mean, is EJB method B, that runs in the thread executed in a new > > transaction, as the initial EJB method A returns, or does > it run in the same > > db transaction as method A ? > > > > Eddie > > Hi Eddie. > > Launching threads in an EJB is against spec, as you may have noticed. > > What you may want to consider is using JMS. > > You would want to set up the EJB as a MessageDrivenBean, and then > have the onMessage call method B. > > My understanding is that you can preserve the transaction/across > through a message. > > > -Steve > -- > Stephen Davidson > Java Consultant > Delphi Consultants, LLC > http://www.delphis.com > Phone: 214-696-6224 x208 >
Re: Transaction question ?
Eddie wrote: > > Hellu, > > Please some help on the following transaction scenario ?: > > I am receing some information through a HTTP post method. The servlet, > running as part of a J2EE application, calls a EJB method A. The EJB method > does some little processing. After this, it checks some conditions, and > might do some more processing in an other EJB method B depending on the > conditions (in the same method still). I want to call method B in a thread, > such that the client, performing the HTTP request, isn't waiting too long. > So I want to start method B in a thread, such that the initial EJB method A > returns. How does the transacion model looks like in this case and it is > wise to do it like this ? (My transaction attribute is set to Required and I > am using CMP). > I mean, is EJB method B, that runs in the thread executed in a new > transaction, as the initial EJB method A returns, or does it run in the same > db transaction as method A ? > > Eddie Hi Eddie. Launching threads in an EJB is against spec, as you may have noticed. What you may want to consider is using JMS. You would want to set up the EJB as a MessageDrivenBean, and then have the onMessage call method B. My understanding is that you can preserve the transaction/across through a message. -Steve -- Stephen Davidson Java Consultant Delphi Consultants, LLC http://www.delphis.com Phone: 214-696-6224 x208
Re: Transaction question
Hellu,
Does someone knows if Orion supports a default transaction attribute as
specified in the EJB 2.0 spec.
Thanks Simon,
Eddie
- Original Message -
From: Simon Evans <[EMAIL PROTECTED]>
To: Orion-Interest <[EMAIL PROTECTED]>
Sent: Monday, August 06, 2001 6:40 PM
Subject: RE: Transaction question
> from the ejb-2.0 spec, it is a little unclear, but it says that putting a
> deafault transaction attribute is ok, and the default will be used for all
> methods that are not explicitly defined to have a different transaction
> attribute.
>
> so this should work, but if it does not, maybe orion interpreted the spec
> differently or has not implemented it correctly
>
>
>Transaction-handling for the
> SmsManager
>nl.unwired.sgs.sms.SmsManager
>Remote
>*
>
> Required
>
>
>
>Transaction-handling for the
> SmsManager
>nl.unwired.sgs.sms.SmsManager
>Remote
>B
>
> RequiresNew
>
>
>
>
>
> -Original Message-
> From: Eddie Post [mailto:[EMAIL PROTECTED]]
> Sent: Monday, August 06, 2001 1:48 AM
> To: Orion-Interest
> Subject: Re: Transaction question
>
>
>
> I already replyed to this message but noticed that it never came
through...
> so here it is again...
>
> Thanks for the earlier reply.
> My reaction:
> I understand what you do below, but how must I define all this, such that
> - All me methods still have the "trans-attribute" set to Required (as
> before).
> - Only the new method B has the "trans-attribute" set to RequiredNew ?
>
> So what I am looking for is, some kind of default "trans-attribute" for
all
> methods, if the trans-attribute" isn't defined for the method in the xml
> file.
> As in the example below, I need to specify the "trans-attribute" for ALL
my
> methods separately, which isn't a nice way, as I have a lot of methods,
and
> it is easy to forget one, especialy when you add a new method.
> How do I do this ? (isn't there a way to set the "trans-attribute"
property
> for methods with a regular expression or something like that ??)
>
> Eddie
>
>
>
> - Original Message -
> From: "Simon Evans" <[EMAIL PROTECTED]>
> To: "Orion-Interest" <[EMAIL PROTECTED]>
> Sent: Thursday, July 26, 2001 7:49 PM
> Subject: RE: Transaction question
>
>
> > i think you need transaction attribute 'RequiresNew' in B, and
'Requires'
> on
> > A.
> > then A has to catch B's remote exception.
> >
> > ejb-jar.xml like:
> >
> >
> >
> > Transaction-handling for the
> SmsManager
> > nl.unwired.sgs.sms.SmsManager
> > Remote
> > A
> >
> > Required
> >
> >
> >
> > Transaction-handling for the
> SmsManager
> > nl.unwired.sgs.sms.SmsManager
> > Remote
> > B
> >
> > RequiresNew
> >
> >
> > code like:
> >
> > A(){
> > try{
> > b();
> > } catch(Exception ex){}
> > }
> >
> > so B will execute in a new transaction and rollback when an exception is
> > thrown. A will finish wihtout throwing an exception and commit its own
> > transaction.
> >
> >
> >
> >
> > -Original Message-
> > From: Eddie [mailto:[EMAIL PROTECTED]]
> > Sent: Thursday, July 26, 2001 8:08 AM
> > To: Orion-Interest
> > Subject: Re: Transaction question
> >
> >
> > Hellu hellu,
> >
> > Please some advise on the question I posted some days ago (see below)?
> >
> > Eddie
> >
> > - Original Message -
> > From: "Eddie" <[EMAIL PROTECTED]>
> > To: "Orion-Interest" <[EMAIL PROTECTED]>
> > Sent: Tuesday, July 24, 2001 10:47 AM
> > Subject: Transaction question
> >
> >
> > > Hellu,
> > >
> > > I don't know how to configure the following transaction scenario with
> CMP.
> > > Please some help or maybe a little example:
> > > I have two bean methods: A and B.
> > > A calls B and I want that when B throws a RemoteException that A
> > intercepts,
> > > that B performs a rollback and A not !
> > > I know how to do that in the code (I think): A just catches
Re: Transaction question
Seth,
Thanks Seth I will try that, does the order in the xml file matters ? (first
the default, and than the customized transaction attributes for example ).
Eddie
- Original Message -
From: Seth Osher <[EMAIL PROTECTED]>
To: Orion-Interest <[EMAIL PROTECTED]>
Sent: Monday, August 06, 2001 4:57 PM
Subject: RE: Transaction question
> Set up a default transaction-attribute for your bean.
>
> This is from the EJB 2.0 draft.
> Page 353
> Section 17.4.1
>
> Use a "*" for the .
>
>
> EJBNAME
> *
>
>
> - Seth
> [EMAIL PROTECTED]
>
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Eddie Post
> Sent: Monday, August 06, 2001 4:48 AM
> To: Orion-Interest
> Subject: Re: Transaction question
>
>
>
> I already replyed to this message but noticed that it never came
through...
> so here it is again...
>
> Thanks for the earlier reply.
> My reaction:
> I understand what you do below, but how must I define all this, such that
> - All me methods still have the "trans-attribute" set to Required (as
> before).
> - Only the new method B has the "trans-attribute" set to RequiredNew ?
>
> So what I am looking for is, some kind of default "trans-attribute" for
all
> methods, if the trans-attribute" isn't defined for the method in the xml
> file.
> As in the example below, I need to specify the "trans-attribute" for ALL
my
> methods separately, which isn't a nice way, as I have a lot of methods,
and
> it is easy to forget one, especialy when you add a new method.
> How do I do this ? (isn't there a way to set the "trans-attribute"
property
> for methods with a regular expression or something like that ??)
>
> Eddie
>
>
>
> - Original Message -
> From: "Simon Evans" <[EMAIL PROTECTED]>
> To: "Orion-Interest" <[EMAIL PROTECTED]>
> Sent: Thursday, July 26, 2001 7:49 PM
> Subject: RE: Transaction question
>
>
> > i think you need transaction attribute 'RequiresNew' in B, and
'Requires'
> on
> > A.
> > then A has to catch B's remote exception.
> >
> > ejb-jar.xml like:
> >
> >
> >
> > Transaction-handling for the
> SmsManager
> > nl.unwired.sgs.sms.SmsManager
> > Remote
> > A
> >
> > Required
> >
> >
> >
> > Transaction-handling for the
> SmsManager
> > nl.unwired.sgs.sms.SmsManager
> > Remote
> > B
> >
> > RequiresNew
> >
> >
> > code like:
> >
> > A(){
> > try{
> > b();
> > } catch(Exception ex){}
> > }
> >
> > so B will execute in a new transaction and rollback when an exception is
> > thrown. A will finish wihtout throwing an exception and commit its own
> > transaction.
> >
> >
> >
> >
> > -Original Message-
> > From: Eddie [mailto:[EMAIL PROTECTED]]
> > Sent: Thursday, July 26, 2001 8:08 AM
> > To: Orion-Interest
> > Subject: Re: Transaction question
> >
> >
> > Hellu hellu,
> >
> > Please some advise on the question I posted some days ago (see below)?
> >
> > Eddie
> >
> > - Original Message -
> > From: "Eddie" <[EMAIL PROTECTED]>
> > To: "Orion-Interest" <[EMAIL PROTECTED]>
> > Sent: Tuesday, July 24, 2001 10:47 AM
> > Subject: Transaction question
> >
> >
> > > Hellu,
> > >
> > > I don't know how to configure the following transaction scenario with
> CMP.
> > > Please some help or maybe a little example:
> > > I have two bean methods: A and B.
> > > A calls B and I want that when B throws a RemoteException that A
> > intercepts,
> > > that B performs a rollback and A not !
> > > I know how to do that in the code (I think): A just catches the
> > > remoteException of B and doesn't throw it outside his method.
> > >
> > > However how do I configure this in the xml file ??
> > > I now have the following in my ejb-jar.xml, which mean that all the
> > methods
> > > execute in the same transaction:
> > >
> > >
> > >
> > > Transaction-handling for the
> > SmsManager
> > > nl.unwired.sgs.sms.SmsManager
> > > Remote
> > > *
> > >
> > > Required
> > >
> > >
> > >
> > > As far as I understand it, I have to configure that method B has
> > > "RequiresNew set, but how do I configure this in the xml file, such
that
> > the
> > > rest still use "Required" ??
> > > And is this the correct way to do it ??
> > >
> > > Please some help as I can't find anything on the Internet
(mail-archive
> > > etc..),
> > > Eddie
> > >
> > >
> > >
> >
> >
>
>
>
>
>
>
RE: Transaction question
from the ejb-2.0 spec, it is a little unclear, but it says that putting a
deafault transaction attribute is ok, and the default will be used for all
methods that are not explicitly defined to have a different transaction
attribute.
so this should work, but if it does not, maybe orion interpreted the spec
differently or has not implemented it correctly
Transaction-handling for the
SmsManager
nl.unwired.sgs.sms.SmsManager
Remote
*
Required
Transaction-handling for the
SmsManager
nl.unwired.sgs.sms.SmsManager
Remote
B
RequiresNew
-Original Message-
From: Eddie Post [mailto:[EMAIL PROTECTED]]
Sent: Monday, August 06, 2001 1:48 AM
To: Orion-Interest
Subject: Re: Transaction question
I already replyed to this message but noticed that it never came through...
so here it is again...
Thanks for the earlier reply.
My reaction:
I understand what you do below, but how must I define all this, such that
- All me methods still have the "trans-attribute" set to Required (as
before).
- Only the new method B has the "trans-attribute" set to RequiredNew ?
So what I am looking for is, some kind of default "trans-attribute" for all
methods, if the trans-attribute" isn't defined for the method in the xml
file.
As in the example below, I need to specify the "trans-attribute" for ALL my
methods separately, which isn't a nice way, as I have a lot of methods, and
it is easy to forget one, especialy when you add a new method.
How do I do this ? (isn't there a way to set the "trans-attribute" property
for methods with a regular expression or something like that ??)
Eddie
- Original Message -
From: "Simon Evans" <[EMAIL PROTECTED]>
To: "Orion-Interest" <[EMAIL PROTECTED]>
Sent: Thursday, July 26, 2001 7:49 PM
Subject: RE: Transaction question
> i think you need transaction attribute 'RequiresNew' in B, and 'Requires'
on
> A.
> then A has to catch B's remote exception.
>
> ejb-jar.xml like:
>
>
>
> Transaction-handling for the
SmsManager
> nl.unwired.sgs.sms.SmsManager
> Remote
> A
>
> Required
>
>
>
> Transaction-handling for the
SmsManager
> nl.unwired.sgs.sms.SmsManager
> Remote
> B
>
> RequiresNew
>
>
> code like:
>
> A(){
> try{
> b();
> } catch(Exception ex){}
> }
>
> so B will execute in a new transaction and rollback when an exception is
> thrown. A will finish wihtout throwing an exception and commit its own
> transaction.
>
>
>
>
> -Original Message-
> From: Eddie [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, July 26, 2001 8:08 AM
> To: Orion-Interest
> Subject: Re: Transaction question
>
>
> Hellu hellu,
>
> Please some advise on the question I posted some days ago (see below)?
>
> Eddie
>
> - Original Message -
> From: "Eddie" <[EMAIL PROTECTED]>
> To: "Orion-Interest" <[EMAIL PROTECTED]>
> Sent: Tuesday, July 24, 2001 10:47 AM
> Subject: Transaction question
>
>
> > Hellu,
> >
> > I don't know how to configure the following transaction scenario with
CMP.
> > Please some help or maybe a little example:
> > I have two bean methods: A and B.
> > A calls B and I want that when B throws a RemoteException that A
> intercepts,
> > that B performs a rollback and A not !
> > I know how to do that in the code (I think): A just catches the
> > remoteException of B and doesn't throw it outside his method.
> >
> > However how do I configure this in the xml file ??
> > I now have the following in my ejb-jar.xml, which mean that all the
> methods
> > execute in the same transaction:
> >
> >
> >
> > Transaction-handling for the
> SmsManager
> > nl.unwired.sgs.sms.SmsManager
> > Remote
> > *
> >
> > Required
> >
> >
> >
> > As far as I understand it, I have to configure that method B has
> > "RequiresNew set, but how do I configure this in the xml file, such that
> the
> > rest still use "Required" ??
> > And is this the correct way to do it ??
> >
> > Please some help as I can't find anything on the Internet (mail-archive
> > etc..),
> > Eddie
> >
> >
> >
>
>
RE: Transaction question
Set up a default transaction-attribute for your bean.
This is from the EJB 2.0 draft.
Page 353
Section 17.4.1
Use a "*" for the .
EJBNAME
*
- Seth
[EMAIL PROTECTED]
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Eddie Post
Sent: Monday, August 06, 2001 4:48 AM
To: Orion-Interest
Subject: Re: Transaction question
I already replyed to this message but noticed that it never came through...
so here it is again...
Thanks for the earlier reply.
My reaction:
I understand what you do below, but how must I define all this, such that
- All me methods still have the "trans-attribute" set to Required (as
before).
- Only the new method B has the "trans-attribute" set to RequiredNew ?
So what I am looking for is, some kind of default "trans-attribute" for all
methods, if the trans-attribute" isn't defined for the method in the xml
file.
As in the example below, I need to specify the "trans-attribute" for ALL my
methods separately, which isn't a nice way, as I have a lot of methods, and
it is easy to forget one, especialy when you add a new method.
How do I do this ? (isn't there a way to set the "trans-attribute" property
for methods with a regular expression or something like that ??)
Eddie
- Original Message -
From: "Simon Evans" <[EMAIL PROTECTED]>
To: "Orion-Interest" <[EMAIL PROTECTED]>
Sent: Thursday, July 26, 2001 7:49 PM
Subject: RE: Transaction question
> i think you need transaction attribute 'RequiresNew' in B, and 'Requires'
on
> A.
> then A has to catch B's remote exception.
>
> ejb-jar.xml like:
>
>
>
> Transaction-handling for the
SmsManager
> nl.unwired.sgs.sms.SmsManager
> Remote
> A
>
> Required
>
>
>
> Transaction-handling for the
SmsManager
> nl.unwired.sgs.sms.SmsManager
> Remote
> B
>
> RequiresNew
>
>
> code like:
>
> A(){
> try{
> b();
> } catch(Exception ex){}
> }
>
> so B will execute in a new transaction and rollback when an exception is
> thrown. A will finish wihtout throwing an exception and commit its own
> transaction.
>
>
>
>
> -Original Message-
> From: Eddie [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, July 26, 2001 8:08 AM
> To: Orion-Interest
> Subject: Re: Transaction question
>
>
> Hellu hellu,
>
> Please some advise on the question I posted some days ago (see below)?
>
> Eddie
>
> - Original Message -
> From: "Eddie" <[EMAIL PROTECTED]>
> To: "Orion-Interest" <[EMAIL PROTECTED]>
> Sent: Tuesday, July 24, 2001 10:47 AM
> Subject: Transaction question
>
>
> > Hellu,
> >
> > I don't know how to configure the following transaction scenario with
CMP.
> > Please some help or maybe a little example:
> > I have two bean methods: A and B.
> > A calls B and I want that when B throws a RemoteException that A
> intercepts,
> > that B performs a rollback and A not !
> > I know how to do that in the code (I think): A just catches the
> > remoteException of B and doesn't throw it outside his method.
> >
> > However how do I configure this in the xml file ??
> > I now have the following in my ejb-jar.xml, which mean that all the
> methods
> > execute in the same transaction:
> >
> >
> >
> > Transaction-handling for the
> SmsManager
> > nl.unwired.sgs.sms.SmsManager
> > Remote
> > *
> >
> > Required
> >
> >
> >
> > As far as I understand it, I have to configure that method B has
> > "RequiresNew set, but how do I configure this in the xml file, such that
> the
> > rest still use "Required" ??
> > And is this the correct way to do it ??
> >
> > Please some help as I can't find anything on the Internet (mail-archive
> > etc..),
> > Eddie
> >
> >
> >
>
>
Re: Transaction question
I already replyed to this message but noticed that it never came through...
so here it is again...
Thanks for the earlier reply.
My reaction:
I understand what you do below, but how must I define all this, such that
- All me methods still have the "trans-attribute" set to Required (as
before).
- Only the new method B has the "trans-attribute" set to RequiredNew ?
So what I am looking for is, some kind of default "trans-attribute" for all
methods, if the trans-attribute" isn't defined for the method in the xml
file.
As in the example below, I need to specify the "trans-attribute" for ALL my
methods separately, which isn't a nice way, as I have a lot of methods, and
it is easy to forget one, especialy when you add a new method.
How do I do this ? (isn't there a way to set the "trans-attribute" property
for methods with a regular expression or something like that ??)
Eddie
- Original Message -
From: "Simon Evans" <[EMAIL PROTECTED]>
To: "Orion-Interest" <[EMAIL PROTECTED]>
Sent: Thursday, July 26, 2001 7:49 PM
Subject: RE: Transaction question
> i think you need transaction attribute 'RequiresNew' in B, and 'Requires'
on
> A.
> then A has to catch B's remote exception.
>
> ejb-jar.xml like:
>
>
>
> Transaction-handling for the
SmsManager
> nl.unwired.sgs.sms.SmsManager
> Remote
> A
>
> Required
>
>
>
> Transaction-handling for the
SmsManager
> nl.unwired.sgs.sms.SmsManager
> Remote
> B
>
> RequiresNew
>
>
> code like:
>
> A(){
> try{
> b();
> } catch(Exception ex){}
> }
>
> so B will execute in a new transaction and rollback when an exception is
> thrown. A will finish wihtout throwing an exception and commit its own
> transaction.
>
>
>
>
> -Original Message-
> From: Eddie [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, July 26, 2001 8:08 AM
> To: Orion-Interest
> Subject: Re: Transaction question
>
>
> Hellu hellu,
>
> Please some advise on the question I posted some days ago (see below)?
>
> Eddie
>
> - Original Message -
> From: "Eddie" <[EMAIL PROTECTED]>
> To: "Orion-Interest" <[EMAIL PROTECTED]>
> Sent: Tuesday, July 24, 2001 10:47 AM
> Subject: Transaction question
>
>
> > Hellu,
> >
> > I don't know how to configure the following transaction scenario with
CMP.
> > Please some help or maybe a little example:
> > I have two bean methods: A and B.
> > A calls B and I want that when B throws a RemoteException that A
> intercepts,
> > that B performs a rollback and A not !
> > I know how to do that in the code (I think): A just catches the
> > remoteException of B and doesn't throw it outside his method.
> >
> > However how do I configure this in the xml file ??
> > I now have the following in my ejb-jar.xml, which mean that all the
> methods
> > execute in the same transaction:
> >
> >
> >
> > Transaction-handling for the
> SmsManager
> > nl.unwired.sgs.sms.SmsManager
> > Remote
> > *
> >
> > Required
> >
> >
> >
> > As far as I understand it, I have to configure that method B has
> > "RequiresNew set, but how do I configure this in the xml file, such that
> the
> > rest still use "Required" ??
> > And is this the correct way to do it ??
> >
> > Please some help as I can't find anything on the Internet (mail-archive
> > etc..),
> > Eddie
> >
> >
> >
>
>
Re: Transaction question
Thanks Simon, So nested exception is an 'Orion' thing ?? Before I had Remote * Because I now have to specify the transaction type for the two methods, does that mean I have to specify the transaction type (required/requiredNew) for EVERY method in my Manager ?? Can't I define a transaction type as default for example, and make an exception for the method B ?? Ed - Original Message - From: "Simon Evans" <[EMAIL PROTECTED]> To: "Orion-Interest" <[EMAIL PROTECTED]> Sent: Thursday, July 26, 2001 10:35 PM Subject: RE: Transaction question > sorry , thats what i meant...cut and paste mistake > > -Original Message- > From: Juan Lorandi (Chile) [mailto:[EMAIL PROTECTED]] > Sent: Thursday, July 26, 2001 9:55 AM > To: Orion-Interest > Subject: RE: Transaction question > > > Bottom line... you can't do that. J2EE doesn't support nested transactions. > However, this may work in orion. for info on the descriptors, check out > Sun's EJB spec and orion documentation and DTD's. This is a rough draft of > how it would have to look like: > > > > Transaction-handling for the > SmsManager > nl.unwired.sgs.sms.SmsManager > Remote > [METHOD A] > > Required > > > > Transaction-handling for the > SmsManager > nl.unwired.sgs.sms.SmsManager > Remote > [METHOD_B] > > RequiresNew > > > therefore, all methods are marked as 'Required' but [YOUR_METHOD_HERE], > which is marked as 'RequiresNew' > > -Original Message- > > From: Eddie [mailto:[EMAIL PROTECTED]] > > Sent: Martes, 24 de Julio de 2001 4:47 > > To: Orion-Interest > > Subject: Transaction question > > > > > > Hellu, > > > > I don't know how to configure the following transaction > > scenario with CMP. > > Please some help or maybe a little example: > > I have two bean methods: A and B. > > A calls B and I want that when B throws a RemoteException > > that A intercepts, > > that B performs a rollback and A not ! > > I know how to do that in the code (I think): A just catches the > > remoteException of B and doesn't throw it outside his method. > > > > However how do I configure this in the xml file ?? > > I now have the following in my ejb-jar.xml, which mean that > > all the methods > > execute in the same transaction: > > > > > > > > Transaction-handling for the > > SmsManager > > nl.unwired.sgs.sms.SmsManager > > Remote > > * > > > > Required > > > > > > > > As far as I understand it, I have to configure that method B has > > "RequiresNew set, but how do I configure this in the xml > > file, such that the > > rest still use "Required" ?? > > And is this the correct way to do it ?? > > > > Please some help as I can't find anything on the Internet > > (mail-archive > > etc..), > > Eddie > > > > > >
RE: Transaction question
sorry , thats what i meant...cut and paste mistake -Original Message- From: Juan Lorandi (Chile) [mailto:[EMAIL PROTECTED]] Sent: Thursday, July 26, 2001 9:55 AM To: Orion-Interest Subject: RE: Transaction question Bottom line... you can't do that. J2EE doesn't support nested transactions. However, this may work in orion. for info on the descriptors, check out Sun's EJB spec and orion documentation and DTD's. This is a rough draft of how it would have to look like: Transaction-handling for the SmsManager nl.unwired.sgs.sms.SmsManager Remote [METHOD A] Required Transaction-handling for the SmsManager nl.unwired.sgs.sms.SmsManager Remote [METHOD_B] RequiresNew therefore, all methods are marked as 'Required' but [YOUR_METHOD_HERE], which is marked as 'RequiresNew' > -Original Message- > From: Eddie [mailto:[EMAIL PROTECTED]] > Sent: Martes, 24 de Julio de 2001 4:47 > To: Orion-Interest > Subject: Transaction question > > > Hellu, > > I don't know how to configure the following transaction > scenario with CMP. > Please some help or maybe a little example: > I have two bean methods: A and B. > A calls B and I want that when B throws a RemoteException > that A intercepts, > that B performs a rollback and A not ! > I know how to do that in the code (I think): A just catches the > remoteException of B and doesn't throw it outside his method. > > However how do I configure this in the xml file ?? > I now have the following in my ejb-jar.xml, which mean that > all the methods > execute in the same transaction: > > > > Transaction-handling for the > SmsManager > nl.unwired.sgs.sms.SmsManager > Remote > * > > Required > > > > As far as I understand it, I have to configure that method B has > "RequiresNew set, but how do I configure this in the xml > file, such that the > rest still use "Required" ?? > And is this the correct way to do it ?? > > Please some help as I can't find anything on the Internet > (mail-archive > etc..), > Eddie > >
RE: Transaction question
i think you need transaction attribute 'RequiresNew' in B, and 'Requires' on
A.
then A has to catch B's remote exception.
ejb-jar.xml like:
Transaction-handling for the SmsManager
nl.unwired.sgs.sms.SmsManager
Remote
A
Required
Transaction-handling for the SmsManager
nl.unwired.sgs.sms.SmsManager
Remote
B
RequiresNew
code like:
A(){
try{
b();
} catch(Exception ex){}
}
so B will execute in a new transaction and rollback when an exception is
thrown. A will finish wihtout throwing an exception and commit its own
transaction.
-Original Message-
From: Eddie [mailto:[EMAIL PROTECTED]]
Sent: Thursday, July 26, 2001 8:08 AM
To: Orion-Interest
Subject: Re: Transaction question
Hellu hellu,
Please some advise on the question I posted some days ago (see below)?
Eddie
- Original Message -
From: "Eddie" <[EMAIL PROTECTED]>
To: "Orion-Interest" <[EMAIL PROTECTED]>
Sent: Tuesday, July 24, 2001 10:47 AM
Subject: Transaction question
> Hellu,
>
> I don't know how to configure the following transaction scenario with CMP.
> Please some help or maybe a little example:
> I have two bean methods: A and B.
> A calls B and I want that when B throws a RemoteException that A
intercepts,
> that B performs a rollback and A not !
> I know how to do that in the code (I think): A just catches the
> remoteException of B and doesn't throw it outside his method.
>
> However how do I configure this in the xml file ??
> I now have the following in my ejb-jar.xml, which mean that all the
methods
> execute in the same transaction:
>
>
>
> Transaction-handling for the
SmsManager
> nl.unwired.sgs.sms.SmsManager
> Remote
> *
>
> Required
>
>
>
> As far as I understand it, I have to configure that method B has
> "RequiresNew set, but how do I configure this in the xml file, such that
the
> rest still use "Required" ??
> And is this the correct way to do it ??
>
> Please some help as I can't find anything on the Internet (mail-archive
> etc..),
> Eddie
>
>
>
RE: Transaction question
Bottom line... you can't do that. J2EE doesn't support nested transactions. However, this may work in orion. for info on the descriptors, check out Sun's EJB spec and orion documentation and DTD's. This is a rough draft of how it would have to look like: Transaction-handling for the SmsManager nl.unwired.sgs.sms.SmsManager Remote * Required Transaction-handling for the SmsManager nl.unwired.sgs.sms.SmsManager Remote [YOUR_METHOD_HERE] RequiresNew therefore, all methods are marked as 'Required' but [YOUR_METHOD_HERE], which is marked as 'RequiresNew' > -Original Message- > From: Eddie [mailto:[EMAIL PROTECTED]] > Sent: Martes, 24 de Julio de 2001 4:47 > To: Orion-Interest > Subject: Transaction question > > > Hellu, > > I don't know how to configure the following transaction > scenario with CMP. > Please some help or maybe a little example: > I have two bean methods: A and B. > A calls B and I want that when B throws a RemoteException > that A intercepts, > that B performs a rollback and A not ! > I know how to do that in the code (I think): A just catches the > remoteException of B and doesn't throw it outside his method. > > However how do I configure this in the xml file ?? > I now have the following in my ejb-jar.xml, which mean that > all the methods > execute in the same transaction: > > > > Transaction-handling for the > SmsManager > nl.unwired.sgs.sms.SmsManager > Remote > * > > Required > > > > As far as I understand it, I have to configure that method B has > "RequiresNew set, but how do I configure this in the xml > file, such that the > rest still use "Required" ?? > And is this the correct way to do it ?? > > Please some help as I can't find anything on the Internet > (mail-archive > etc..), > Eddie > >
Re: Transaction question
Hellu hellu, Please some advise on the question I posted some days ago (see below)? Eddie - Original Message - From: "Eddie" <[EMAIL PROTECTED]> To: "Orion-Interest" <[EMAIL PROTECTED]> Sent: Tuesday, July 24, 2001 10:47 AM Subject: Transaction question > Hellu, > > I don't know how to configure the following transaction scenario with CMP. > Please some help or maybe a little example: > I have two bean methods: A and B. > A calls B and I want that when B throws a RemoteException that A intercepts, > that B performs a rollback and A not ! > I know how to do that in the code (I think): A just catches the > remoteException of B and doesn't throw it outside his method. > > However how do I configure this in the xml file ?? > I now have the following in my ejb-jar.xml, which mean that all the methods > execute in the same transaction: > > > > Transaction-handling for the SmsManager > nl.unwired.sgs.sms.SmsManager > Remote > * > > Required > > > > As far as I understand it, I have to configure that method B has > "RequiresNew set, but how do I configure this in the xml file, such that the > rest still use "Required" ?? > And is this the correct way to do it ?? > > Please some help as I can't find anything on the Internet (mail-archive > etc..), > Eddie > > >
