[Resin-interest] question about UserTransaction
Hi
I've learnt how to use UserTransaction, and even if it works, I don't
know if my implementation has good performance.
I added a single UserTransaction in one of my servlets :
public class globalaction extends HttpServlet
{
@In public static UserTransaction m_ut;
I use this m_ut from all servlets for all requests. Is this safe ? Or
should I declare one UserTransaction in each servlet (or even one for
each request ?)
Thanks for any information
--
Très cordialement,
Riccardo Cohen
---
Articque
http://www.articque.com
149 av Général de Gaulle
37230 Fondettes - France
tel : 02-47-49-90-49
fax : 02-47-49-91-49
___
resin-interest mailing list
resin-interest@caucho.com
http://maillist.caucho.com/mailman/listinfo/resin-interest
Re: [Resin-interest] question about UserTransaction
Hi Riccardo,
I'm using
@In
TransactionManager transaction;
in servlets and @Component
and it proved to be robust and of good performance.
ps I don't think static is a good directive.
-Wesley
- Original Message -
From: Riccardo Cohen [EMAIL PROTECTED]
To: General Discussion for the Resin application server
resin-interest@caucho.com
Sent: Friday, April 25, 2008 4:31 PM
Subject: [Resin-interest] question about UserTransaction
Hi
I've learnt how to use UserTransaction, and even if it works, I don't
know if my implementation has good performance.
I added a single UserTransaction in one of my servlets :
public class globalaction extends HttpServlet
{
@In public static UserTransaction m_ut;
I use this m_ut from all servlets for all requests. Is this safe ? Or
should I declare one UserTransaction in each servlet (or even one for
each request ?)
Thanks for any information
--
Très cordialement,
Riccardo Cohen
---
Articque
http://www.articque.com
149 av Général de Gaulle
37230 Fondettes - France
tel : 02-47-49-90-49
fax : 02-47-49-91-49
___
resin-interest mailing list
resin-interest@caucho.com
http://maillist.caucho.com/mailman/listinfo/resin-interest
___
resin-interest mailing list
resin-interest@caucho.com
http://maillist.caucho.com/mailman/listinfo/resin-interest
Re: [Resin-interest] question about UserTransaction
Thanks for this information.
The member is static for now because it is the same transaction used in
all servlets. Anyway most of my servlets have static only methods.
wesley wrote:
Hi Riccardo,
I'm using
@In
TransactionManager transaction;
in servlets and @Component
and it proved to be robust and of good performance.
ps I don't think static is a good directive.
-Wesley
- Original Message -
From: Riccardo Cohen [EMAIL PROTECTED]
To: General Discussion for the Resin application server
resin-interest@caucho.com
Sent: Friday, April 25, 2008 4:31 PM
Subject: [Resin-interest] question about UserTransaction
Hi
I've learnt how to use UserTransaction, and even if it works, I don't
know if my implementation has good performance.
I added a single UserTransaction in one of my servlets :
public class globalaction extends HttpServlet
{
@In public static UserTransaction m_ut;
I use this m_ut from all servlets for all requests. Is this safe ? Or
should I declare one UserTransaction in each servlet (or even one for
each request ?)
Thanks for any information
--
Très cordialement,
Riccardo Cohen
---
Articque
http://www.articque.com
149 av Général de Gaulle
37230 Fondettes - France
tel : 02-47-49-90-49
fax : 02-47-49-91-49
___
resin-interest mailing list
resin-interest@caucho.com
http://maillist.caucho.com/mailman/listinfo/resin-interest
Re: [Resin-interest] question about UserTransaction
On Apr 25, 2008, at 5:29 AM, Riccardo Cohen wrote:
Thanks for this information.
The member is static for now because it is the same transaction used
in
all servlets.
The UserTransaction is basically a singleton, so you can use @In
UserTransaction anywhere and it'll all become part of the same
transaction. One of the main points of transactions is that all of
your resources which commit together are in the same transaction, i.e.
all-or-none commit.
Normally, static is discouraged, though, as wesley said.
-- Scott
Anyway most of my servlets have static only methods.
wesley wrote:
Hi Riccardo,
I'm using
@In
TransactionManager transaction;
in servlets and @Component
and it proved to be robust and of good performance.
ps I don't think static is a good directive.
-Wesley
- Original Message -
From: Riccardo Cohen [EMAIL PROTECTED]
To: General Discussion for the Resin application server
resin-interest@caucho.com
Sent: Friday, April 25, 2008 4:31 PM
Subject: [Resin-interest] question about UserTransaction
Hi
I've learnt how to use UserTransaction, and even if it works, I don't
know if my implementation has good performance.
I added a single UserTransaction in one of my servlets :
public class globalaction extends HttpServlet
{
@In public static UserTransaction m_ut;
I use this m_ut from all servlets for all requests. Is this safe ? Or
should I declare one UserTransaction in each servlet (or even one for
each request ?)
Thanks for any information
--
Très cordialement,
Riccardo Cohen
---
Articque
http://www.articque.com
149 av Général de Gaulle
37230 Fondettes - France
tel : 02-47-49-90-49
fax : 02-47-49-91-49
___
resin-interest mailing list
resin-interest@caucho.com
http://maillist.caucho.com/mailman/listinfo/resin-interest
___
resin-interest mailing list
resin-interest@caucho.com
http://maillist.caucho.com/mailman/listinfo/resin-interest
Re: [Resin-interest] question about UserTransaction
On Apr 25, 2008, at 9:18 AM, Riccardo Cohen wrote:
all right,
and what happens if 2 or 3 threads running the same code, call
m_ut.Begin in the same time ? I suppose then that they all go in the
same transaction ?
No, each thread gets its own transaction. Transactions are always
thread-based.
The UserTransaction object is thread-aware, so it automatically
handles each thread separately.
-- Scott
Scott Ferguson wrote:
On Apr 25, 2008, at 5:29 AM, Riccardo Cohen wrote:
Thanks for this information.
The member is static for now because it is the same transaction used
in
all servlets.
The UserTransaction is basically a singleton, so you can use @In
UserTransaction anywhere and it'll all become part of the same
transaction. One of the main points of transactions is that all of
your resources which commit together are in the same transaction,
i.e.
all-or-none commit.
Normally, static is discouraged, though, as wesley said.
-- Scott
Anyway most of my servlets have static only methods.
wesley wrote:
Hi Riccardo,
I'm using
@In
TransactionManager transaction;
in servlets and @Component
and it proved to be robust and of good performance.
ps I don't think static is a good directive.
-Wesley
- Original Message -
From: Riccardo Cohen [EMAIL PROTECTED]
To: General Discussion for the Resin application server
resin-interest@caucho.com
Sent: Friday, April 25, 2008 4:31 PM
Subject: [Resin-interest] question about UserTransaction
Hi
I've learnt how to use UserTransaction, and even if it works, I
don't
know if my implementation has good performance.
I added a single UserTransaction in one of my servlets :
public class globalaction extends HttpServlet
{
@In public static UserTransaction m_ut;
I use this m_ut from all servlets for all requests. Is this
safe ? Or
should I declare one UserTransaction in each servlet (or even one
for
each request ?)
Thanks for any information
--
Très cordialement,
Riccardo Cohen
---
Articque
http://www.articque.com
149 av Général de Gaulle
37230 Fondettes - France
tel : 02-47-49-90-49
fax : 02-47-49-91-49
___
resin-interest mailing list
resin-interest@caucho.com
http://maillist.caucho.com/mailman/listinfo/resin-interest
___
resin-interest mailing list
resin-interest@caucho.com
http://maillist.caucho.com/mailman/listinfo/resin-interest
--
Très cordialement,
Riccardo Cohen
---
Articque
http://www.articque.com
149 av Général de Gaulle
37230 Fondettes - France
tel : 02-47-49-90-49
fax : 02-47-49-91-49
___
resin-interest mailing list
resin-interest@caucho.com
http://maillist.caucho.com/mailman/listinfo/resin-interest
___
resin-interest mailing list
resin-interest@caucho.com
http://maillist.caucho.com/mailman/listinfo/resin-interest
Re: [Resin-interest] question about UserTransaction
Thanks a lot for the clarification
Scott Ferguson wrote:
On Apr 25, 2008, at 9:18 AM, Riccardo Cohen wrote:
all right,
and what happens if 2 or 3 threads running the same code, call
m_ut.Begin in the same time ? I suppose then that they all go in the
same transaction ?
No, each thread gets its own transaction. Transactions are always
thread-based.
The UserTransaction object is thread-aware, so it automatically
handles each thread separately.
-- Scott
Scott Ferguson wrote:
On Apr 25, 2008, at 5:29 AM, Riccardo Cohen wrote:
Thanks for this information.
The member is static for now because it is the same transaction used
in
all servlets.
The UserTransaction is basically a singleton, so you can use @In
UserTransaction anywhere and it'll all become part of the same
transaction. One of the main points of transactions is that all of
your resources which commit together are in the same transaction,
i.e.
all-or-none commit.
Normally, static is discouraged, though, as wesley said.
-- Scott
Anyway most of my servlets have static only methods.
wesley wrote:
Hi Riccardo,
I'm using
@In
TransactionManager transaction;
in servlets and @Component
and it proved to be robust and of good performance.
ps I don't think static is a good directive.
-Wesley
- Original Message -
From: Riccardo Cohen [EMAIL PROTECTED]
To: General Discussion for the Resin application server
resin-interest@caucho.com
Sent: Friday, April 25, 2008 4:31 PM
Subject: [Resin-interest] question about UserTransaction
Hi
I've learnt how to use UserTransaction, and even if it works, I
don't
know if my implementation has good performance.
I added a single UserTransaction in one of my servlets :
public class globalaction extends HttpServlet
{
@In public static UserTransaction m_ut;
I use this m_ut from all servlets for all requests. Is this
safe ? Or
should I declare one UserTransaction in each servlet (or even one
for
each request ?)
Thanks for any information
--
Très cordialement,
Riccardo Cohen
---
Articque
http://www.articque.com
149 av Général de Gaulle
37230 Fondettes - France
tel : 02-47-49-90-49
fax : 02-47-49-91-49
___
resin-interest mailing list
resin-interest@caucho.com
http://maillist.caucho.com/mailman/listinfo/resin-interest
___
resin-interest mailing list
resin-interest@caucho.com
http://maillist.caucho.com/mailman/listinfo/resin-interest
--
Très cordialement,
Riccardo Cohen
---
Articque
http://www.articque.com
149 av Général de Gaulle
37230 Fondettes - France
tel : 02-47-49-90-49
fax : 02-47-49-91-49
___
resin-interest mailing list
resin-interest@caucho.com
http://maillist.caucho.com/mailman/listinfo/resin-interest
___
resin-interest mailing list
resin-interest@caucho.com
http://maillist.caucho.com/mailman/listinfo/resin-interest
--
Très cordialement,
Riccardo Cohen
---
Articque
http://www.articque.com
149 av Général de Gaulle
37230 Fondettes - France
tel : 02-47-49-90-49
fax : 02-47-49-91-49
___
resin-interest mailing list
resin-interest@caucho.com
http://maillist.caucho.com/mailman/listinfo/resin-interest
