POJO transaction timeout

[damianharvey.damianharvey.gmail.com]

I have a couple of methods that do some chunky processing and need a longer transaction timeout.

I know that I can:

• Change the global transaction timeout in jboss-service.xml; or


• Create an SLSB and annotate it with @TransactionTimeout

But is there anyway to set the timeout on a POJO, possibly something in line with the @Transactional annotation? I'm using CMT so I can't set the timeout programmatically (afaik?).

Cheers,

Damian.

[admin.admin.email.tld]

This wiki is unfortunately outdated (somewhat typical of JBoss), but is useful:

http://wiki.jboss.org/wiki/TransactionTimeout

Also, you can use the annotation you mentioned above:

http://docs.jboss.com/ejb3/embedded/api/org/jboss/annotation/ejb/TransactionTimeout.html

And refer to Mike Keith's book on EJB3/JPA for coverage on the UserTransaction interface, there is a setTransactionTimeout() method that may be useful unless you want to set it globally.

You may also be able to process the DB transaction(s) asynchronously, but not sure that will help in your use case or not...

Also, you can turn off transaction support

(transaction type = @NOT_SUPPORTED)

for those methods, if that works for you...

[damianharvey.damianharvey.gmail.com]

Thanks Arbi. I've seen those links.

After reading the API it looks like I can turn off transaction support for a POJO method like this:

@Transactional(TransactionPropagationType.NEVER)

Even so, in the ideal world I would be able to do something like this:

@Transactional(TransactionPropagationType.REQUIRED, timeout = 600)

Cheers,

Damian.

[svadu]

Good find!

[samdoyle]

It does not look as if the @TransactionTimeout works on non-EJB3 POJOS

From the api:

Annotation for specifying the transaction timeout of an EJB business method

I have cases where even using this annotation on a POJO will result on a timeout less then the time I specify. Is there an alternate way of doing this in Seam?

Thanks in advance.

[jkronegg]

On a project using JTA transactions and POJO entities (no EJB3), we use the following solution:

@Transactional
public void myLongRunningMethod() {

    // set the transaction timeout
    try {
        int transactionTimeoutSeconds = 1000;
        log.info("setting transaction timeout to "+transactionTimeoutSeconds+" seconds");
        ((javax.transaction.UserTransaction)org.jboss.seam.transaction.Transaction.instance()).setTransactionTimeout(transactionTimeoutSeconds);
    } catch (SystemException e1) {
        // failed to set the transaction timeout => just log some content
        e1.printStackTrace();
    }

    // my long running code
    ...
}

[seanbizzo]

JBOSS 5.1.0
SEAM 2.2.0

configure the timeout for your CMT in /default/deploy/transaction-jboss-beans.xml the default is 5 minutes (300 seconds)

<property name="transactionTimeout">300</property>

increase the duration to whatever length of time you think it should take.

regular pojo with asynchronous method call, not ejb just seam component

@Asynchronous
@Transactional(TransactionPropagationType.REQUIRED)    
public void doSomethingAsynchronously(List<Object> list) {
    //do long running thing here on list
}

this works for us on a large set of records like a mini batch process.