Another issue is that you should use @Reference against public/protected
fields or setter methods to receive the proxy by injection. In your case,
the following is invalid:
@Reference
public List<InformationObject>
getAllInformationObject(List<InformationObjectConstraint> constraintsList)
throws ISNotFoundException {
...
}
I'll add some check in our code to report these kind of illegal usages.
Thanks,
Raymond
----- Original Message -----
From: "Simon Laws" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Thursday, October 11, 2007 9:17 AM
Subject: Re: New using Tuscany
On 10/11/07, Ana Belén Antón Gironés <[EMAIL PROTECTED]> wrote:
Hi Simon!
First of all, thank you very much for your help.
I have some problems running my application. When I run my isClient.java I
get this exception:
Starting ...
11-oct-2007 16:45:23
org.apache.tuscany.sca.assembly.builder.impl.CompositeBuilderImpl$1problem
ADVERTENCIA: [WARNING] No targets for reference: getInformationObject null
11-oct-2007 16:45:23
org.apache.tuscany.sca.assembly.builder.impl.CompositeBuilderImpl$1problem
ADVERTENCIA: [WARNING] No targets for reference: getAllInformationObject
null
Information.composite ready
Exception in thread "main" org.osoa.sca.ServiceUnavailableException: No
service invoker is available for reference default
(bindingURI=InformationGroundingServiceComponent
operation=getGroundingService).
at
org.apache.tuscany.sca.binding.sca.impl.RuntimeSCAReferenceBindingProvider.c
reateInvoker(RuntimeSCAReferenceBindingProvider.java:192)
at
org.apache.tuscany.sca.core.assembly.RuntimeWireImpl.addBindingInterceptor
(R
untimeWireImpl.java:214)
at
org.apache.tuscany.sca.core.assembly.RuntimeWireImpl.initInvocationChains
(Ru
ntimeWireImpl.java:156)
at
org.apache.tuscany.sca.core.assembly.RuntimeWireImpl.getInvocationChains
(Run
timeWireImpl.java:97)
at
org.apache.tuscany.sca.core.invocation.JDKInvocationHandler.getInvocationCha
in(JDKInvocationHandler.java:190)
at
org.apache.tuscany.sca.core.invocation.JDKInvocationHandler.invoke
(JDKInvoca
tionHandler.java:124)
at $Proxy7.getInformationObject(Unknown Source)
at Client.isClient.main(igsClient.java:34)
I know that I am missing some refence to getInformationObject and
getAllInformationObject and something is missing in the composite, but I
don't know what it is. My application has a complex estructure but I am
going to try to explain it.
isClient.java is:
****************************************************************************
*****************************
package Client;
import org.apache.tuscany.sca.host.embedded.SCADomain;
import eu.services.information.exceptions.ISNotFoundException;
import eu.services.information.io.InformationObject;
import eu.services.information.is.InformationService;
public class isClient {
public static void main(String[] args) throws Exception {
System.out.println("Starting ...");
SCADomain scaDomain = SCADomain.newInstance("Information.composite");
System.out.println("Information.composite ready");
InformationService is = scaDomain.getService(InformationService.class,
"InformationServiceComponent");
InformationObject iobj;
try {
iobj = is.getInformation("c1dee5cd");
System.out.println("Description: " + iobj.getDescription());
System.out.println("Lang: " + iobj.getLang());
System.out.println("Name: " + iobj.getName());;
System.out.println("Protocol: " + iobj.getProtocol());
System.out.println("URL: " + iobj.getURL());
System.out.println("ID: " + iobj.getID());
} catch (ISNotFoundException e1) {
e1.printStackTrace();
}
scaDomain.close();
}
}
****************************************************************************
*********************************
the composite:
****************************************************************************
*********************************
<?xml version="1.0" encoding="UTF-8"?>
<composite xmlns="http://www.osoa.org/xmlns/sca/1.0";
name="InformationComposite">
<component name="InformationServiceComponent">
<implementation.java class=
"eu.services.information.rh.InformationServiceImpl"/>
</component>
</composite>
****************************************************************************
*********************************
my src structure is:
****************************************************************************
*********************************
-Client
-isClient.java
-eu.services.information.exceptions
-GCException.java
-InconsistentIOConstraintException.java
-InconsistentIOException.java
-ISNotFoundException.java
-eu.services.information.ior
-InformationObjectRepository.java
-eu.services.information.io
-InformationObject.java
-eu.services.information.isr
-ISRequest.java
-mainISRequest.java
-eu.services.information.is
-InformationService.java
-InformationObjectConstraint.java
-eu.services.information.rh
-InformationServiceImpl.java
-InformationObjectImpl.java
-InformationService.composite
****************************************************************************
*********************************
the InformationService.java is
****************************************************************************
********************************
package eu.services.information.is;
import java.util.List;
import org.osoa.sca.annotations.Remotable;
import eu.services.information.exceptions.*;
import -eu.services.information.io.InformationObject;
@Remotable
public interface InformationService {
public InformationObject getInformationObject (String id)
throws ISNotFoundException;
public List<InformationObject>
getAllInformationObject(List<InformationObjectConstraint> constraintsList)
throws ISNotFoundException;
}
****************************************************************************
*********************************
and the InformationServiceImpl.java:
****************************************************************************
*********************************
package eu.esdihumboldt.informationgrounding.requesthandler;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Node;
import org.osoa.sca.annotations.Reference;
import org.osoa.sca.annotations.Service;
import eu.services.information.exceptions.*;
import eu.services.information.ior.InformationObjectRepository;
import eu.services.information.io.InformationObject;
import eu.services.information.is.*;
@Service(InformationGroundingService.class)
public class InformationServiceImpl implements InformationService{
//
----------------------------------------------------------------------------
------------------------------
@Reference
public List<InformationObject>
getAllInformationObject(List<InformationObjectConstraint> constraintsList)
throws ISNotFoundException {
List<InformationObject> ioList = new ArrayList<GroundingService>();
//code
return ioList;
}
// ----------------------------------------------------------------------
@Reference
public InformationObject getInformationObject(String id) throws
ISNotFoundException{
InformationObject io = null;
//code
return io;
}
// ----------------------------------------------------------------------
private boolean checkConstaintList(List<GroundingServiceConstraint>
constraints){
boolean isRight = true;
//code
return isRight;
}
// ----------------------------------------------------------------------
private String buildXPath (List<GroundingServiceConstraint> constraints){
//code
String path = "";
return path;
}
// ----------------------------------------------------------------------
private String getPath (Integer id ){
//code
String path = "";
return path;
}
}
****************************************************************************
*********************************
I hope you can follow and understand my explanation.
Thank you very much for your help! Regards,
Ana Belen
Hi
Disregarding that warnings you are getting about missing references (as you
say you are expecting that) the error you are getting:
Exception in thread "main" org.osoa.sca.ServiceUnavailableException: No
service invoker is available for reference default
(bindingURI=InformationGroundingServiceComponent
operation=getGroundingService).
Means that when you make the call in the client to get a proxy to a service:
InformationService is = scaDomain.getService(InformationService.class
,"InformationServiceComponent");
The runtime is not able to find the service you are asking for. Now the
interesting thing to note here is that the bindingURI =
InformationGroundingServiceComponent. This is clearly not the name of the
component in the .composite file or the name of the component you asked for.
There is a similar name in the @Service annotation you have on you service
implementation:
@Service(InformationGroundingService.class)
public class InformationServiceImpl implements InformationService{
Not sure how Component is getting added to the end though. Anyhow you should
make the @Service annotation match the interface that the service
implementation implementats. @Service is used to tell the Tuscany runtime
which interfaces provide SCA services. So try.
@Service(InformationService.class)
In this case you can get away without the @Service annotation altogether as
the runtime will assume that you want to expose the single interface that
you implement as a service.
If this doesn't have any +ve effect let me know and I'll look a little
closer, i.e. run up the sample, and see what's going on
Regards
Simon
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