[ARIES-1140] Injected java.lang.reflect.Proxy implements only single interface

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: proxy-impl-1.0.1
• Component/s: Proxy
• Assignee: Unassigned
• Reporter: Andrei Shakirin
• Created: 12/Dec/13 15:29
• Updated: 13/Dec/13 17:41
• Resolved: 13/Dec/13 09:39

Description

Hi,

I have a problem in using Blueprint together with CXF and Karaf projects. The use case is quite trivial: I inject OSGi service into java class source. This OSGi service is exposed by declared jax-ws client.

1. Blueprint configuration exporting service:

<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:cxf="http://cxf.apache.org/blueprint/core"
    xmlns:jaxws="http://cxf.apache.org/blueprint/jaxws"
    xsi:schemaLocation="http://www.osgi.org/xmlns/blueprint/v1.0.0 http://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd
                        http://cxf.apache.org/blueprint/jaxws http://cxf.apache.org/schemas/blueprint/jaxws.xsd
                        http://cxf.apache.org/blueprint/core http://cxf.apache.org/schemas/blueprint/core.xsd
    ">
    <jaxws:client id="crmClient"
        xmlns:serviceNamespace="http://services.talend.org/CRMService"
        serviceClass="org.talend.services.crmservice.CRMService"
        serviceName="serviceNamespace:CRMServiceProvider"
        endpointName="serviceNamespace:CRMServicePort"
        address="http://localhost:8080/service/CRMService"/>

     <service ref="crmClient" interface="org.talend.services.crmservice.CRMService" />
</blueprint>

Where org.talend.services.crmservice.CRMService is generated jax-ws interface

2. Blueprint configuration importing service:

<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 	xsi:schemaLocation="http://www.osgi.org/xmlns/blueprint/v1.0.0 http://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd">
	<reference id="CRMServiceClient" interface="org.talend.services.crmservice.CRMService" />

	<bean id="TestClass"
		class="org.talend..demo.TestClass">
		<property name="crms" ref="CRMServiceClient" />
	</bean>
</blueprint>

3. Code in TestClass:

...
    private CRMService crms;

    public void setCrms(CRMService crms) {
        this.crms = crms;
        System.out.println(crms.getClass());
        System.out.println(crms.toString());
        System.out.println(crms instanceof BindingProvider);
    }
...

Problem:
The problem is that crms proxy, injected into TestClass, implements only org.talend.services.crmservice.CRMService.
The proxy calls methods of org.apache.cxf.jaxws.JaxWsClientProxy which implements javax.xml.ws.BindingProvider interface. I expect that crms proxy also implements javax.xml.ws.BindingProvider, but it is not the case. I have the following output from setCrms:

class com.sun.proxy.$Proxy151
org.apache.cxf.jaxws.JaxWsClientProxy@c3f8b42
false

The proxy calls toString() method of JaxWsClientProxy, but it is not instance of BindingProvider interface. The problem is that this proxy is not jax-ws compatible, because spec requires that all proxies implementing BindingProvider interface.

Interesting that Spring DM proxy hasn't such problem: it implements BindingProvider interface in this scenario.

Is it Blueprint problem? (seems to be true for me)
Is there way to fix this in Blueprint?

Regards,
Andrei.

Issue Links

• is blocked by: CXF-5457 Provide access to BindingProvider in case of using Blueprint proxy injection
• is related to: ARIES-1141 Allow <reference> to reference (and filter) services with multiple interfaces