Fahim, Not sure that it should matter, but what about changing: public ConversionService conversionService; from a public to a private field?
Not sure that that should matter (would have to think).... Scott On Wed, Dec 10, 2008 at 9:27 AM, fahim salim <[EMAIL PROTECTED]> wrote: > Hello > > No I have the same error > > Here is the log I have. > > *java.lang.NullPointerException > at > calculator.CalculatorServiceImpl.conversionEnEuro(CalculatorServiceImpl.java:43) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > at java.lang.reflect.Method.invoke(Method.java:585) > at > org.apache.tuscany.sca.implementation.java.invocation.JavaImplementationInvoker.invoke(JavaImplementationInvoker.java:132) > at > org.apache.tuscany.sca.core.databinding.wire.PassByValueInterceptor.invoke(PassByValueInterceptor.java:112) > at > org.apache.tuscany.sca.binding.sca.impl.SCABindingInvoker.invoke(SCABindingInvoker.java:61) > at > org.apache.tuscany.sca.core.databinding.wire.PassByValueInterceptor.invoke(PassByValueInterceptor.java:112) > at > org.apache.tuscany.sca.core.invocation.JDKInvocationHandler.invoke(JDKInvocationHandler.java:287) > at > org.apache.tuscany.sca.core.invocation.JDKInvocationHandler.invoke(JDKInvocationHandler.java:154) > at $Proxy6.conversionEnEuro(Unknown Source) > at client.Client.main(Client.java:45) > * > > 2008/12/10 Scott Kurz <[EMAIL PROTECTED]> > > Fahim, >> >> So I'd expect you're getting a different error now after switching the >> SCDL to: >> * <reference name="conversionService" >> * >> Is that correct? What's the new error? >> >> Scott >> >> >> On Tue, Dec 9, 2008 at 10:53 AM, fahim salim <[EMAIL PROTECTED]> wrote: >> >>> Hello Scott >>> >>> Yes it could have been that >>> I have made the modification in the SCDL (Calcul.composite) and I have >>> replaced the upper case by lowercase 'c' but it doesn't work ... >>> >>> >>> >>> 2008/12/9 Scott Kurz <[EMAIL PROTECTED]> >>> >>> Fahim, >>>> >>>> I wonder if the problem is the case of your reference in SCDL. >>>> >>>> You have .. >>>> * <reference name="ConversionService" >>>> >>>> *But in the Java impl (CalculatorServiceImpl ) it looks like >>>> the reference name is "conversionService" (lowercase 'c'). >>>> >>>> Maybe try that.... >>>> >>>> Scott >>>> >>>> >>>> >>>> >>>> On Tue, Dec 9, 2008 at 7:41 AM, fahim salim <[EMAIL PROTECTED]> wrote: >>>> >>>>> Hello All >>>>> >>>>> What I'd like to do is to have two components implemented as composite >>>>> (like in simple-bigbank) >>>>> CalculatorServiceComponent is implemented by Calculator.composite and >>>>> ConversionServiceComponent is implemented by Converter.composite >>>>> ConversionService is a reference for CalculatorServiceComponent. >>>>> >>>>> Here is the composite file for this configuration >>>>> >>>>> *<?xml version="1.0" encoding="ISO-8859-15"?> >>>>> <composite xmlns="http://www.osoa.org/xmlns/sca/1.0"; >>>>> targetNamespace="http://calcul"; >>>>> xmlns:ca="http://calculator"; >>>>> xmlns:co="http://converter"; >>>>> name="Calcul"> >>>>> >>>>> <component name="CalculatorServiceComponent"> >>>>> <implementation.composite name="ca:Calculator"/> >>>>> <reference name="ConversionService" >>>>> target="ConversionServiceComponent"> >>>>> <binding.sca/> >>>>> </reference> >>>>> </component> >>>>> >>>>> <component name="ConversionServiceComponent"> >>>>> <implementation.composite name="co:Converter"/> >>>>> </component> >>>>> >>>>> </composite>* >>>>> >>>>> ConversionService offers one method which is *conversionEnEuro()* >>>>> >>>>> *public interface ConversionService { >>>>> public double conversionEnEuro(double value); >>>>> }* >>>>> >>>>> >>>>> >>>>> When I run the application I have the following stack trace error but I >>>>> can't understand what is going wrong. It seems that the proxy which is >>>>> returned doesn't know how to invoke the method of ConversionService but >>>>> why >>>>> ? >>>>> >>>>> class $Proxy6 >>>>> Caught Exception: null >>>>> java.lang.NullPointerException >>>>> at >>>>> calculator.CalculatorServiceImpl.conversionEnEuro(CalculatorServiceImpl.java:43) >>>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) >>>>> at >>>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) >>>>> at >>>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) >>>>> at java.lang.reflect.Method.invoke(Method.java:585) >>>>> at >>>>> org.apache.tuscany.sca.implementation.java.invocation.JavaImplementationInvoker.invoke(JavaImplementationInvoker.java:132) >>>>> at >>>>> org.apache.tuscany.sca.core.databinding.wire.PassByValueInterceptor.invoke(PassByValueInterceptor.java:112) >>>>> at >>>>> org.apache.tuscany.sca.binding.sca.impl.SCABindingInvoker.invoke(SCABindingInvoker.java:61) >>>>> at >>>>> org.apache.tuscany.sca.core.databinding.wire.PassByValueInterceptor.invoke(PassByValueInterceptor.java:112) >>>>> at >>>>> org.apache.tuscany.sca.core.invocation.JDKInvocationHandler.invoke(JDKInvocationHandler.java:287) >>>>> at >>>>> org.apache.tuscany.sca.core.invocation.JDKInvocationHandler.invoke(JDKInvocationHandler.java:154) >>>>> at $Proxy6.conversionEnEuro(Unknown Source) >>>>> at client.Client.main(Client.java:45) >>>>> >>>>> I have enclosed all the files >>>>> >>>>> Thanks for your help >>>>> >>>>> Fahim >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>> >>> >> >
