Using tx:annotation-driven prevents Autowiring a bean
Solution 1
Problem solved!
As you can see on my code above, I was defining the beans both via XML
and Annotation
, thus every bean was duplicated in runtime. Then, when I added the tx:annotation-driven
tag the application begun intercepting the wrong bean. It was indeed notifying a bean, but an orphan bean.
Solution 2
Here´s an example working with tx. Look this line: xmlns:tx="http://www.springframework.org/schema/tx"
and this on schemaLocation: http://www.springframework.org/schema/tx/spring-tx.xsd
Source: http://www.springbyexample.org/examples/hibernate-transaction-annotation-config.html
Alvaro Cavalcanti
Writing software about people, one story at a time.
Updated on October 30, 2020Comments
-
Alvaro Cavalcanti over 3 years
I'm developing a module on an OSGi application, using Spring MVC and Virgo Webserver.
On my module I have a Controller, that access a Manager, which has a list of handlers that are responsible for handling report generation.
Everything was doing fine until I had to call a transactional method from an external service. Since none of my classes were transactional I had to add the references to the transation manager and
annotation-driven
. Then, my Manager stopped being notified.I understand that when using
annotation-driven
all my beans must implement a public interface in order for the proxying mechanism to work. And as far as I know, all the classes are (one of them wasn't, but then I changed it).My configuration files are:
bundle-context.xml:
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd"> <context:annotation-config /> <tx:annotation-driven transaction-manager="transactionManager"/> <bean id="reportManager" class="reportmodule.manager.impl.ReportManagerImpl"/> <bean id="mvpepReportHandler" class="reportmodule.manager.impl.MVPEPReportHandler"/> <bean id="reportConfigDao" class="reportmodule.repository.impl.ReportConfigurationHibernateDAOImpl"/> <bean id="oSGIChangeReportHandler" class="reportmodule.osgi.impl.OSGIChangeReportHandlerImpl"/> <bean id="reportController" class="reportmodule.controller.impl.ReportControllerImpl"/> <bean id="reportControllerHandlerMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping"> <property name="mappings"> <value>/module/reportController/**=reportController</value> </property> <property name="alwaysUseFullPath" value="true"></property> </bean> </beans>
and my bundle-osgi.xml is as follows:
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:osgi="http://www.springframework.org/schema/osgi" xmlns:osgi-compendium="http://www.springframework.org/schema/osgi-compendium" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/osgi http://www.springframework.org/schema/osgi/spring-osgi.xsd http://www.springframework.org/schema/osgi-compendium http://www.springframework.org/schema/osgi-compendium/spring-osgi-compendium-1.2.xsd"> <osgi:reference id="transactionManager" interface="org.springframework.transaction.PlatformTransactionManager" /> <osgi:reference id="sessionFactory" interface="org.hibernate.SessionFactory" /> <osgi:reference id="smaCoreUtilService" interface="core.util.service.SmaCoreUtilService" /> <osgi:service ref="reportControllerHandlerMapping" interface="org.springframework.web.servlet.HandlerMapping" context-class-loader="service-provider" auto-export="interfaces"/> <osgi:service interface="reportmodule.api.manager.ReportManager" ref="reportManager" auto-export="interfaces"/> <osgi:service interface="reportmodule.api.manager.ReportHandler" ref="mvpepReportHandler" auto-export="interfaces"/> <osgi:service interface="reportmodule.repository.ReportConfigurationDAO" ref="reportConfigDao" auto-export="interfaces"/> <osgi:service interface="reportmodule.osgi.OSGIChangeReportHandler" ref="oSGIChangeReportHandler" auto-export="interfaces"/> <osgi:list cardinality="0..N" id="reportHandler" interface="reportmodule.api.manager.ReportHandler" greedy-proxying="true"> <osgi:listener ref="oSGIChangeReportHandler" bind-method="register" unbind-method="unregister"/> </osgi:list> </beans>
So, after all the services are being published the oSGIChangeReportHandler.register is called (I'm able to debbug it):
@Service(value="oSGIChangeReportHandler") public class OSGIChangeReportHandlerImpl implements OSGIChangeReportHandler { private ReportManager reportManager; /** * @param reportManager the reportManager to set */ @Autowired public void setReportManager(ReportManager reportManager) { this.reportManager = reportManager; } @SuppressWarnings("rawtypes") public void register(ReportHandler reportHandler, Map properties) { reportManager.addReportHandler(reportHandler); } @SuppressWarnings("rawtypes") public void unregister(ReportHandler reportHandler, Map properties) { reportManager.removeReportHandler(reportHandler); } }
And although the debugger shows Proxies for both the
reportManager
andreportHandler
on theregister
method, the debugger does not halts on theReportManagerImpl.addReportHandler
method:@Service(value="reportManager") @Transactional(propagation = Propagation.MANDATORY, rollbackFor = Exception.class) public class ReportManagerImpl implements ReportManager { private ReportConfigurationDAO reportConfigurationDAO; private ArrayList<ReportHandler> reportHandlers = new ArrayList<ReportHandler>(); /** * @param reportConfigurationDAO the reportConfigurationDAO to set */ @Autowired public void setReportConfigurationDAO(ReportConfigurationDAO reportConfigurationDAO) { this.reportConfigurationDAO = reportConfigurationDAO; } @Override @Transactional public InputStream gerarRelatorio(ReportRequest repoReq) throws NegocioException { // Generates the report... } /* (non-Javadoc) * @see reportmodule.api.manager.ReportManager#addReportHandler(reportmodule.api.manager.ReportHandler) */ @Override public void addReportHandler(ReportHandler handler) { if (handler != null) { this.reportHandlers.add(handler); } } /* (non-Javadoc) * @see reportmodule.api.manager.ReportManager#removeReportHandler(reportmodule.api.manager.ReportHandler) */ @Override public void removeReportHandler(ReportHandler handler) { if (handler != null) { this.reportHandlers.remove(handler); } } }
I must stress that when I remove the
tx:annotation-driven
tag from thebundle-context.xml
file, everything works fine (thehandler
is properly added to the list during startup).So, what am I missing here?