@Transactional annotation / atlassian spring scanner?

[arno schumacher]

There is a section in

https://developer.atlassian.com/docs/atlassian-platform-common-components/active-objects/getting-started-with-active-objects

describing how to set up a spring BeanPostProcessor wrapping all components having a @Transactional annotation with a TX-Proxy.

Is there a similar construct to do that stuff with Atlassian Spring Scanner?

Example: 

atlasian-pluginx.xml

<component
   key="tx-processor" 
   name="Transactional Annotation Processor" 
   class="com.atlassian.activeobjects.external.TransactionalAnnotationProcessor">

  <decription>Processes @Transactional annotations.</decription>
</component>

code:

@Transactional

public interface TestStepService {

 TestStep findById(int testStepId);

 TestStep updateTestStep(TestStep testStep)
}

[arno schumacher · Accepted solution]

(1) Remove any ComponentImport annotations from ActiveObjects

// AO is imported via META-INF/spring/plugin-context.xml
// @ComponentImport
com.atlassian.activeobjects.external.ActiveObjects ao;

(2) Configure TransactionalAnnotationProcessor in META-INF/spring/plugin-context.xml descriptor

<beans

xmlns:beans="http://www.springframework.org/schema/beans"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xmlns:atlassian-scanner="http://www.atlassian.com/schema/atlassian-scanner"
 xmlns="http://www.springframework.org/schema/beans"
 xmlns:osgi="http://www.eclipse.org/gemini/blueprint/schema/blueprint"
 xsi:schemaLocation="http://www.springframework.org/schema/beans
 http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
 http://www.atlassian.com/schema/atlassian-scanner http://www.atlassian.com/schema/atlassian-scanner/atlassian-scanner.xsd
 http://www.eclipse.org/gemini/blueprint/schema/blueprint http://www.eclipse.org/gemini/blueprint/schema/blueprint/gemini-blueprint.xsd">

<osgi:reference id="ao_osgi">
 <osgi:interfaces>
 <beans:value>com.atlassian.activeobjects.external.ActiveObjects</beans:value>
 </osgi:interfaces>
 </osgi:reference>

<beans:bean id="tx-processor" class="com.atlassian.activeobjects.external.TransactionalAnnotationProcessor">
 <beans:constructor-arg ref="ao_osgi"/>
 </beans:bean>

<atlassian-scanner:scan-indexes/>

</beans>

[Oliver Straesser]

really? why Atlassian makes this so complicated now - in comparison with the atplassian-pligin.xml style? 

Is there a docu where you found this, because the scanner docu is missing of explicit examples :-/?

[arno schumacher]

There might be some better solution for the problem, but I had no time for further investigations.

Unfortunately I can't point you directly to an appropriate documentation. 

You have to dive into the documentation of the underlying framework stack  to get some knowledge what is happening behind the scenes. 

You may look for BeanPostProcessor in the spring documentation to get some basic understanding how the TX Annotation is working and then check the Atlassian documentation

• Atlassian - https://developer.atlassian.com/docs/atlassian-platform-common-components/plugin-framework/behind-the-scenes-in-the-plugin-framework
• Gemini/SpringDM - http://www.eclipse.org/gemini/blueprint/documentation/reference/2.0.0.RELEASE/html/index.html
• Spring - https://spring.io/docs
• https://www.osgi.org/

[Panos]

I'll leave it here, it might help somenone:

Keep @ComponentImport and add only

<bean class="com.atlassian.activeobjects.external.TransactionalAnnotationProcessor">
    <constructor-arg ref="activeObjects"/>
</bean>

 in the plugin-context.xml.

Works with ao v.1.4.0, atlassian-scanner v1.2.7

[developerrespig]

Thank you very much, that just solved a problem that I currently had.