Atomikos Forum

Hi,

Can some one post a sample of how to propagate a transaction between 2 processes when you are using the JTA Atomikos layer and not the low level API?

How do you import and export the transaction?

Thanks.

Hi,

Please check the API guide in the docs folder.

HTH

Hi,

I tried out the doc.

I found that I need to use the following API:

ExportingTransactionManager exportingTransactionManager = userTransactionService.getExportingTransactionManager();

com.atomikos.icatch.Propagation propagation = exportingTransactionManager.getPropagation();

Extent extent = doSomething(propagation);            
            exportingTransactionManager.addExtent(extent);

The thing is I take the userTransactionService object from Spring definition. But the "ExportingTransactionManager" instance it returns is null.

Does someone know what may be the problem?

The spring definition is:

    <bean id="userTransactionService" class="com.atomikos.icatch.config.UserTransactionServiceImp">
        <constructor-arg>
            <props>
                <prop key="com.atomikos.icatch.service">com.atomikos.icatch.standalone.UserTransactionServiceFactory</prop>
                <prop key="com.atomikos.icatch.output_dir">${user.home}/transactions</prop>
                <prop key="com.atomikos.icatch.log_base_dir">${user.home}/transactions</prop>
                <prop key="com.atomikos.icatch.console_file_name">my_tm.out</prop>
                <prop key="com.atomikos.icatch.log_base_name">my_tm.log</prop>
                <prop key="com.atomikos.icatch.tm_unique_name">my_tm</prop>
                <prop key="com.atomikos.icatch.console_log_level">INFO</prop>
            </props>
        </constructor-arg>
    </bean>


    <bean id="jtaTransactionManager"
        class="org.springframework.transaction.jta.JtaTransactionManager"
        lazy-init="true" depends-on="userTransactionService">

        <property name="transactionManager">
            <ref bean="atomikosTransactionManager" />
        </property>
        <property name="userTransaction">
            <ref bean="atomikosUserTransaction" />
        </property>
    </bean>

Try:

com.atomikos.icatch.service=com.atomikos.icatch.trmi.UserTransactionServiceFactory

HTH