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
container-transaction
method
descriptionTransaction-handling for the
SmsManager/description
ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name
method-intfRemote/method-intf
method-name*/method-name
/method
trans-attributeRequired/trans-attribute
/container-transaction
container-transaction
method
descriptionTransaction-handling for the
SmsManager/description
ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name
method-intfRemote/method-intf
method-nameB/method-name
/method
trans-attributeRequiresNew/trans-attribute
/container-transaction
-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:
container-transaction
method
descriptionTransaction-handling for the
SmsManager/description
ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name
method-intfRemote/method-intf
method-nameA/method-name
/method
trans-attributeRequired/trans-attribute
/container-transaction
container-transaction
method
descriptionTransaction-handling for the
SmsManager/description
ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name
method-intfRemote/method-intf
method-nameB/method-name
/method
trans-attributeRequiresNew/trans-attribute
/container-transaction
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:
container-transaction
method
descriptionTransaction-handling for the
SmsManager/description
ejb
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:
container-transaction
method
descriptionTransaction-handling for the
SmsManager/description
ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name
method-intfRemote/method-intf
method-nameA/method-name
/method
trans-attributeRequired/trans-attribute
/container-transaction
container-transaction
method
descriptionTransaction-handling for the
SmsManager/description
ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name
method-intfRemote/method-intf
method-nameB/method-name
/method
trans-attributeRequiresNew/trans-attribute
/container-transaction
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:
container-transaction
method
descriptionTransaction-handling for the
SmsManager/description
ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name
method-intfRemote/method-intf
method-name*/method-name
/method
trans-attributeRequired/trans-attribute
/container-transaction
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 method-name.
method
ejb-nameEJBNAME/ejb-name
method-name*/method-name
/method
- 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:
container-transaction
method
descriptionTransaction-handling for the
SmsManager/description
ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name
method-intfRemote/method-intf
method-nameA/method-name
/method
trans-attributeRequired/trans-attribute
/container-transaction
container-transaction
method
descriptionTransaction-handling for the
SmsManager/description
ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name
method-intfRemote/method-intf
method-nameB/method-name
/method
trans-attributeRequiresNew/trans-attribute
/container-transaction
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:
container-transaction
method
descriptionTransaction-handling for the
SmsManager/description
ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name
method-intfRemote/method-intf
method-name*/method-name
/method
trans-attributeRequired/trans-attribute
/container-transaction
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
container-transaction
method
descriptionTransaction-handling for the
SmsManager/description
ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name
method-intfRemote/method-intf
method-name*/method-name
/method
trans-attributeRequired/trans-attribute
/container-transaction
container-transaction
method
descriptionTransaction-handling for the
SmsManager/description
ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name
method-intfRemote/method-intf
method-nameB/method-name
/method
trans-attributeRequiresNew/trans-attribute
/container-transaction
-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:
container-transaction
method
descriptionTransaction-handling for the
SmsManager/description
ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name
method-intfRemote/method-intf
method-nameA/method-name
/method
trans-attributeRequired/trans-attribute
/container-transaction
container-transaction
method
descriptionTransaction-handling for the
SmsManager/description
ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name
method-intfRemote/method-intf
method-nameB/method-name
/method
trans-attributeRequiresNew/trans-attribute
/container-transaction
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:
container-transaction
method
descriptionTransaction-handling for the
SmsManager/description
ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name
method-intfRemote/method-intf
method-name*/method-name
/method
trans-attributeRequired/trans-attribute
/container-transaction
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
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 method-name.
method
ejb-nameEJBNAME/ejb-name
method-name*/method-name
/method
- 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:
container-transaction
method
descriptionTransaction-handling for the
SmsManager/description
ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name
method-intfRemote/method-intf
method-nameA/method-name
/method
trans-attributeRequired/trans-attribute
/container-transaction
container-transaction
method
descriptionTransaction-handling for the
SmsManager/description
ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name
method-intfRemote/method-intf
method-nameB/method-name
/method
trans-attributeRequiresNew/trans-attribute
/container-transaction
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:
container-transaction
method
descriptionTransaction-handling for the
SmsManager/description
ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name
method-intfRemote/method-intf
method-name*/method-name
/method
trans-attributeRequired/trans-attribute
/container-transaction
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: container-transaction method descriptionTransaction-handling for the SmsManager/description ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name method-intfRemote/method-intf method-name*/method-name /method trans-attributeRequired/trans-attribute /container-transaction 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: container-transaction method descriptionTransaction-handling for the SmsManager/description ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name method-intfRemote/method-intf method-name*/method-name /method trans-attributeRequired/trans-attribute /container-transaction container-transaction method descriptionTransaction-handling for the SmsManager/description ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name method-intfRemote/method-intf method-name[YOUR_METHOD_HERE]/method-name /method trans-attributeRequiresNew/trans-attribute /container-transaction 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: container-transaction method descriptionTransaction-handling for the SmsManager/description ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name method-intfRemote/method-intf method-name*/method-name /method trans-attributeRequired/trans-attribute /container-transaction 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:
container-transaction
method
descriptionTransaction-handling for the SmsManager/description
ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name
method-intfRemote/method-intf
method-nameA/method-name
/method
trans-attributeRequired/trans-attribute
/container-transaction
container-transaction
method
descriptionTransaction-handling for the SmsManager/description
ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name
method-intfRemote/method-intf
method-nameB/method-name
/method
trans-attributeRequiresNew/trans-attribute
/container-transaction
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:
container-transaction
method
descriptionTransaction-handling for the
SmsManager/description
ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name
method-intfRemote/method-intf
method-name*/method-name
/method
trans-attributeRequired/trans-attribute
/container-transaction
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: container-transaction method descriptionTransaction-handling for the SmsManager/description ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name method-intfRemote/method-intf method-name[METHOD A]/method-name /method trans-attributeRequired/trans-attribute /container-transaction container-transaction method descriptionTransaction-handling for the SmsManager/description ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name method-intfRemote/method-intf method-name[METHOD_B]/method-name /method trans-attributeRequiresNew/trans-attribute /container-transaction 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: container-transaction method descriptionTransaction-handling for the SmsManager/description ejb-namenl.unwired.sgs.sms.SmsManager/ejb-name method-intfRemote/method-intf method-name*/method-name /method trans-attributeRequired/trans-attribute /container-transaction 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
