proxyTargetClass using OJB

[eleonhardo]

Hi,

I'm using spring's transactionmanagement with OJB 1.0. When trying to use a class rather than an interface I retrieve the following exception.
Configuration is:

	<bean id="ojbConfigurer" class="org.springframework.orm.ojb.support.LocalOjbConfigurer"/>
	<bean id="myTransactionManager" class="org.springframework.orm.ojb.PersistenceBrokerTransactionManager"/>
	<bean id="baseTransactionProxy" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean"
			abstract="true" >
		<property name="transactionManager"><ref bean="myTransactionManager"/></property>
		<property name="transactionAttributes">
			<props>
				<prop key="get*">PROPAGATION_REQUIRED,readOnly</prop>
				...
			</props>
		</property>
	</bean>

	<bean id="accessMng" parent="baseTransactionProxy" >
		<property name="target" >
			<bean class="eg.model.mng.AccessMngOjbImpl" />
		</property>
		<!-- this line causes the exception -->
		<property name="proxyTargetClass"><value>true</value></property> 
	</bean>

Thanks for any help !
Leo

org.springframework.beans.factory.BeanCreationExce ption: Error creating bean with name 'accessMng' defined in class path resource [applicationContext-ojb.xml]: Initialization of bean failed; nested exception is org.aopalliance.aop.AspectException: null
net.sf.cglib.core.CodeGenerationException: java.lang.IllegalArgumentException-->Protected method: createPersistenceBrokerTemplate()Lorg/springframework/orm/ojb/PersistenceBrokerTemplate;
at net.sf.cglib.core.ReflectUtils.newInstance(Reflect Utils.java:235)
at net.sf.cglib.core.ReflectUtils.newInstance(Reflect Utils.java:220)
at net.sf.cglib.core.ReflectUtils.newInstance(Reflect Utils.java:216)
at net.sf.cglib.proxy.Enhancer.createUsingReflection( Enhancer.java:566)
at net.sf.cglib.proxy.Enhancer.firstInstance(Enhancer .java:493)
at net.sf.cglib.core.AbstractClassGenerator.create(Ab stractClassGenerator.java:220)
at net.sf.cglib.proxy.Enhancer.createHelper(Enhancer. java:368)
at net.sf.cglib.proxy.Enhancer.create(Enhancer.java:2 80)
at org.springframework.aop.framework.Cglib2AopProxy.g etProxy(Cglib2AopProxy.java:171)
at org.springframework.aop.framework.Cglib2AopProxy.g etProxy(Cglib2AopProxy.java:136)
at org.springframework.aop.framework.ProxyFactory.get Proxy(ProxyFactory.java:66)
at org.springframework.transaction.interceptor.Transa ctionProxyFactoryBean.afterPropertiesSet(Transacti onProxyFactoryBean.java:236)
at org.springframework.beans.factory.support.Abstract AutowireCapableBeanFactory.invokeInitMethods(Abstr actAutowireCapableBeanFactory.java:991)
at org.springframework.beans.factory.support.Abstract AutowireCapableBeanFactory.createBean(AbstractAuto wireCapableBeanFactory.java:288)
at org.springframework.beans.factory.support.Abstract AutowireCapableBeanFactory.createBean(AbstractAuto wireCapableBeanFactory.java:208)
at org.springframework.beans.factory.support.Abstract BeanFactory.getBean(AbstractBeanFactory.java:204)
at org.springframework.beans.factory.support.Abstract BeanFactory.getBean(AbstractBeanFactory.java:136)
at org.springframework.beans.factory.support.DefaultL istableBeanFactory.preInstantiateSingletons(Defaul tListableBeanFactory.java:224)
at org.springframework.context.support.AbstractApplic ationContext.refresh(AbstractApplicationContext.ja va:284)
at org.springframework.context.support.ClassPathXmlAp plicationContext.<init>(ClassPathXmlApplicationCon text.java:80)
at org.springframework.context.support.ClassPathXmlAp plicationContext.<init>(ClassPathXmlApplicationCon text.java:65)
at org.springframework.context.support.ClassPathXmlAp plicationContext.<init>(ClassPathXmlApplicationCon text.java:56)

[robh]

Leo,

Can you post the code for your AccessMngOjbImpl class. I have tried reproducing this with a simple example but I have been unable to do so. Also which version of Spring and CGLIB are you using?

Rob

[eleonhardo]

Hi Rob,

I'm using spring 1.1 and cglib-full-2.0.2. The code is:
public class AccessMngOjbImpl extends PersistenceBrokerDaoSupport implements AccessMng {
public void updateUser(AppUser user) throws MyException {
if (user.getFirstname() == null)
throw new MyException("firstname is not set for user: " + user.getId());
getPersistenceBrokerTemplate().store(user);
}
...
}

Leo

[robh]

Leo,

Thanks for that. I am able to reproduce this bug on my machine. I will look into it a little more. I have created an issue on JIRA so you can track the progress: http://opensource.atlassian.com/proj...browse/SPR-357.

For now I recommend that you use JDK proxies by removing the proxyTargetClass property.

Rob

[robh]

Leo,

This is now fixed in CVS and the fix will make its way into 1.1.1 which will be released fairly soon.

Rob

[eleonhardo]

Hi Rob,

thank you for the quick help !!

Leo