Tapestry 5 and Spring beans with same interface

Question

I have a problem with Tapestry 5 and Spring integration. Problem occurs if I have a multiple beans that implement the same interface and I try to inject them with @Inject annotation. Of course I got an exception.

I found a tutorial that says that in that case I have to use @Service annotation too but now I'm getting

org.apache.tapestry5.internal.services.TransformationException
Error obtaining injected value for field 
com.foo.pages.Foo.testService: Service 
id 'someServiceIDeclaredInSpringContextFile' is not defined by any module...

Anyway, question is: How can I inject two different spring beans, that implement a same interface, into Tapestry 5 page?

Answer 1

I solved this problem.

First I made a new annotation

public @interface Bean {
    String value();
}

and I use this wherever I have this one of multiple beans implementing same interface

@Inject
@Bean("springBeanName")
Service foo;

Then I changed org.apache.tapestry5.internal.spring.SpringModuleDef

private ContributionDef createContributionToMasterObjectProvider() {
  ....
  public void contribute(ModuleBuilderSource moduleSource, 
                ServiceResources resources,
                OrderedConfiguration configuration) {
    ....
    switch (beanMap.size()) {
           case 0:
             return null;
           case 1:
             Object bean = beanMap.values().iterator().next();
             return objectType.cast(bean);
           default:
             Bean annotation = annotationProvider.getAnnotation(Bean.class);
             Object springBean = null;
             String beanName = null;

             if (annotation != null) {
               beanName = annotation.value();
               springBean = beanMap.get(beanName);
             } else {
               String message = String.format(
                 "Spring context contains %d beans assignable to type %s: %s.",
                 beanMap.size(),
                 ClassFabUtils.toJavaClassName(objectType),
                 InternalUtils.joinSorted(beanMap.keySet()));
               throw new IllegalArgumentException(message);
             }
             if (springBean != null) {
               return objectType.cast(springBean);
             } else {
               String message = String.format(
                 "Bean [%s] of type %s doesn't exists. Available beans: %s",
                 beanName, ClassFabUtils.toJavaClassName(objectType),
                 InternalUtils.joinSorted(beanMap.keySet()));
               throw new IllegalArgumentException(message);
             }
           }
         }
       };