Mediator To Spring Error-Could not convert from java interface to interface

Question

Hi,
I have a requirement to using a Spring component and my composite application would be File Read -> Mediator -> Spring Component -> File Write.
I have to read a file and using mediator map the same to the Spring input and write the Spring component output to a file.
I have created a Java interface ( Package Name - transformtospring , Interface Name - TransformInterface) and also created a Java Class ( TransformImpl ) which implements the Interface in this package. Saved all these artifacts in SCA-INF/src folder of the application.
My Spring Bean configuration file is as follows ( saved the file in the same folder as composite.xml )
<?xml version="1.0" encoding="windows-1252" ?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:util="http://www.springframework.org/schema/util"
xmlns:jee="http://www.springframework.org/schema/jee"
xmlns:lang="http://www.springframework.org/schema/lang"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:sca="http://xmlns.oracle.com/weblogic/weblogic-sca"
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-2.5.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-2.5.xsd http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-2.5.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd http://www.springframework.org/schema/tool http://www.springframework.org/schema/tool/spring-tool-2.5.xsd http://xmlns.oracle.com/weblogic/weblogic-sca META-INF/weblogic-sca.xsd">
<!--Spring Bean definitions go here-->
<bean class="transformtospring.TransformImpl" name="TransformBean"/>
<sca:service name="TransformService" target="TransformBean"
type="transformtospring.TransformImpl"/>
</beans>
I have created a Spring Context which uses the above Spring Configuration. When i tried to map the mediator output to Spring , i'm getting an error shown below.
" Could not convert from java interface to interface type wsdl . Exception=java.lang.ClassNotFoundException transformtospring.TransformImpl "
Please do let me know where exactly i'm doing wrong.
Regards,
Sri.

Answer 1

Hi All,
I could able to work this one out now !!!
But i'm having an issue mapping the input to this service. The method signature for the service is as follows:
public byte[] processData(byte[] input) throws Throwable{
So the input for this Service is a byte array. Now i'm mapping the data from a File Input ( Read File - opaqueElement ) to this service directly ( using mediator ).
Now when i have looked into the message in the Enterprise Manager, following is the message structure from Read File input to the service.
<message>
<properties>
<property name="tracking.compositeInstanceId" value="10009"/>
<property name="tracking.ecid" value="bcd04297e25136e7:4869a9c:13316255efc:-8000-0000000000001f79"/>
<property name="tracking.conversationId" value="TJ9PCcbtu3S0DA0GuxsGx13RYUb1NxHNndfk2PC8ukk."/>
</properties>
<parts>
<part name="parameters">
<ns0:processCollaboration>
<arg0>PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz48bnMwOkFkZDJJbnB1dCAgeG1s bnM6eHNpPSdodHRwOi8vd3d3LnczLm9yZy8yMDAxL1hNTFNjaGVtYS1pbnN0YW5jZScgeG1sbnM6 bnMwPSd1ay5jby5qZHdpbGxpYW1zLkFkZDJJbnB1dCcgeHNpOnNjaGVtYUxvY2F0aW9uPSd1ay5j by5qZHdpbGxpYW1zLkFkZDJJbnB1dCByZXF1ZXN0LnhzZCcPG5zMDpudW0xPjEwPC9uczA6bnVt MT48bnMwOm51bTI+MTY8L25zMDpudW0yPjwvbnMwOkFkZDJJbnB1dD4=+</arg0>
</ns0:processCollaboration>
</part>
</parts>
</message>
and the corresponding response message ( No output ) back from the service is:
<message>
<properties>
<property name="tracking.compositeInstanceId" value="10009"/>
<property name="tracking.ecid" value="bcd04297e25136e7:4869a9c:13316255efc:-8000-0000000000001f79"/>
<property name="componentName" value="ProcessCollab"/>
<property name="tracking.conversationId" value="TJ9PCcbtu3S0DA0GuxsGx13RYUb1NxHNndfk2PC8ukk."/>
<property name="compositeDN" value="default/CollaborationToSpring!1.0*soa_a8da1da7-f98f-4935-8d20-da9e7bc003cc"/>
</properties>
<parts>
<part name="parameters">
<processCollaborationResponse>
<return/>
</processCollaborationResponse>
</part>
</parts>
</message>
I have included System.out statements in my Java class , but its not printing anything in the logs.
I'm under the impression that the underlying infrastructure ( mediator ) transparently encodes and decodes data from base64Binary to java byte array. So could anyone help me on this !!!
Regards,
Sri.