Nesting business services with application services proxy issue

[Helena]

Hi,
I am creating our service layer to wrap our data access layer by DI of DAO's. I have moved transaction management via AOP/Schema from the DAO's to these new wrapper service classes. In simple business services with multiple DAO's injected, life is good. My problem I can't seem to get beyond is that in a few cases, I have to solve for business services that need to DI another application service: a Messaging service I created - so I have a case of nested services which I believe is my configuration problem. Here is my scenario I am troubleshooting:


I just upgraded MessageService to an application service which needs to be called by several business services: Spring creates a proxy for it

public class MessageService implements BusinessService, IMessageService {
 ... I set my dao's
 ... and do stuff 
}

One of my new business services which requires a MessageService: Spring creates a proxy for the business service AND the application service injected into it

 <!-- new business service in the service layer I'm building: Until I go to aspectJ, I can't seem to decouple the 
 MessageService from my service layer via Spring AOP -->
  <bean id="noticeService" class="com.foo.services.NoticeService">
         <property name="noticeDAO">
             <bean id="noticeDAO" parent="sqlMapService" class="com.foo.services.NoticesDAO"/>
         </property>
        <property name="messageService" ref="messageService"/> [Here is the error: can not cast proxy to type]
    </bean>

 <!-- Messaging - updated service works fine in isolated testing. In dev and qa, DI injects values from
  a properties file but in prod, all data is from the database, thus all the p:'s -->
    <bean id="messageService" class="com.foo.messaging.services.MessageService"
          p:messageFrom="${messaging.messageFrom}" p:messageTo="${messaging.messageTo}"
          p:messageCc="${messaging.messageCc}" p:messageBcc="${messaging.messageBcc}"
          p:faxConfirmationTo="${messaging.faxConfirmationTo}" p:faxTo="${messaging.faxTo}">
         <property name="recipientListDAO">
             <bean id="recipientListDAO" parent="sqlMapService" class="com.foo.messaging.services.RecipientListDAO"/>
         </property>
        <property name="businessEmailSender" ref="busMessageSenderBean"/>
        <property name="faxSender" ref="faxSenderBean"/>
        <property name="messageDAO">
            <bean id="messageDAO" parent="sqlMapService" class="com.foo.messaging.services.MessageDAO"/>
        </property>
        <property name="logDAO">
            <bean id="logDAO" parent="sqlMapService" class="com.foo.messaging.services.LogDAO"/>
        </property>
    </bean>

Part of my Test Class

public class NoticeServiceTest extends SecureTestCase {
 INoticeService noticeService;
 IMessageService messageService; 
 String args = ; // some args setup
protected void setUp() throws Exception {
 
        super.setUp();
        authenticateTestUser();

        noticeService = (INoticeService) systemSetup.getSpringBean("noticeService");
        messageService = (IMessageService) systemSetup.getSpringBean("messageService");

    }
....
}

Log4j output error

DEBUG org.springframework.aop.framework.JdkDynamicAopProxy  - Creating JDK dynamic proxy: target source is SingletonTargetSource for target object [com.foo.messaging.services.MessageService@10df4e2]

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'noticeService' defined in class path resource [service-config.xml]: Error setting property values; nested exception is org.springframework.beans.PropertyBatchUpdateException; nested PropertyAccessExceptions (1) are:
PropertyAccessException 1: org.springframework.beans.TypeMismatchException: Failed to convert property value of type [$Proxy9] to required type [com.foo.messaging.services.MessageService] for property 'messageService'; nested exception is java.lang.IllegalArgumentException: Cannot convert value of type [$Proxy9] to required type [com.foo.messaging.services.MessageService] for property 'messageService': no matching editors or conversion strategy found
Caused by: org.springframework.beans.PropertyBatchUpdateException; nested PropertyAccessException details (1) are:
PropertyAccessException 1:
org.springframework.beans.TypeMismatchException: Failed to convert property value of type [$Proxy9] to required type [com.foo.messaging.services.MessageService] for property 'messageService'; nested exception is java.lang.IllegalArgumentException: Cannot convert value of type [$Proxy9] to required type [com.foo.messaging.services.MessageService] for property 'messageService': no matching editors or conversion strategy found
Caused by: java.lang.IllegalArgumentException: Cannot convert value of type [$Proxy9] to required type [com.foo.messaging.services.MessageService] for property 'messageService': no matching editors or conversion strategy found

Any insight on configuration for nested services such as in the schema above would be greatly appreciated.

kind regards,
h

[Helena]

I just realized what my problem probably is. i have each service implementing BusinessService, and I have everything that implements BusinessService as transactionally managed. Thus, i am nesting a tx-managed class within a tx-managed class. So i'm trying to figure out the best way to design the solution.