Hi
I'm developing a web app, and I'm facing issues with double-proxying... or so I
discovered.
My app uses Datanucleus JDO for persistence, and AOP for transacion definition
on business methods. When I included JSecurity code (I use version 0.9, waiting
for Shiro 1.0) from the sample Spring application (my container is Spring 2.5,
and JBoss AS 4.2), my DI of business beans into other beans no longer worked
(trace snippet):
org.springframework.beans.TypeMismatchException:
Failed to convert property value of type [$Proxy61 implementing
org.springframework.aop.SpringProxy,org.springframework.aop.framework.Advised,net.sf.cglib.proxy.Factory]
to required type [MYPACKAGE.business.MyBean] for property 'myBean';
Some old post somewhere said about double-proxying, and then I figured it must
be the reason, because of this JSecurity configuration I included:
<!-- Enable JSecurity Annotations for Spring-configured beans. Only run after
the lifecycleBeanProcessor has run: -->
<bean
class="org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator"
depends-on="lifecycleBeanPostProcessor" />
I intend to use JSecurity annotation extensively to define security on the
business and DAO layers, but also need definition of transactions for business
layer, hopefully through AOP.
How can I solve this conflict?
If helpful, this is my spring metadata for transacion AOP (not quite correct,
read-only does not work, still working on it):
<!-- the transactional advice (what 'happens'; see the <aop:advisor/> bean
below) -->
<tx:advice id="txAdvice" transaction-manager="txManager">
<!-- the transactional semantics... -->
<tx:attributes>
<tx:method name="store*"/>
<tx:method name="update*"/>
<tx:method name="delete*"/>
<tx:method name="*" read-only="true"/>
</tx:attributes>
</tx:advice>
<!-- ensure that the above transactional advice runs for any execution
of an operation defined by the FooService interface -->
<aop:config proxy-target-class="true">
<aop:pointcut id="defaultServiceOperation" expression="execution(*
MYPACKAGE.business..*Bean.*(..))"/>
<aop:advisor advice-ref="txAdvice" pointcut-ref="defaultServiceOperation"/>
</aop:config>
Many thanks!
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