Examples of javax.enterprise.inject.AmbiguousResolutionException

javax.enterprise.inject.AmbiguousResolutionException
When an injection {@link javax.enterprise.inject.spi.BeanManager#getInstance Manager.getInstance} call cannot return a unique bean, it throwsthis exception. This ambiguity may occur when two subtypes match, e.g. BeanA and BeanB both implementing @Current BeanAPI. The ambiguity may also occur when using more than one {@link javax.enterprise.inject.BindingType @BindingType} on the samebean or when using the special {@link javax.enterprise.inject.Any @Any}bindings, for example:
```
@Foo @A public class Bean {}
@Foo @B public class Bean {}class MyClass {
@Foo Bean _fooField
@Any Bean _anyField} 
```


    private <T> Bean<T> resolveUniqueBean(Type type, Set<Bean<T>> beans) {
        if (beans.size() == 0) {
            throw new UnsatisfiedResolutionException("Unable to resolve any beans of " + type);
        } else if (beans.size() > 1) {
            throw new AmbiguousResolutionException("More than one bean available (" + beans + ")");
        }
        return beans.iterator().next();
    }

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    {
        violationMessage.addLine("found beans: ");


        addBeanInfo(beans, violationMessage);


        throw new AmbiguousResolutionException(violationMessage.toString());
    }

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      }
      else {
        return getReferenceFactory(ij);
      }
    } catch (AmbiguousResolutionException e) {
      throw new AmbiguousResolutionException(L.l("{0}.{1}: {2}",
                                       ij.getMember().getDeclaringClass().getName(),
                                       ij.getMember().getName(),
                                       e.getMessage()),
                                   e);
    } catch (UnsatisfiedResolutionException e) {

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      if (priority == bestPriority)
        matchBeans.add(bean);
    }


    return new AmbiguousResolutionException(L.l("Too many beans match, because they all have equal precedence.  See the @Alternative and <alternatives> tags to choose a precedence.  Beans:{0}\nfor {1}",
                                                listToLines(matchBeans), this));
  }

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    {
        violationMessage.addLine("found beans: ");


        addBeanInfo(beans, violationMessage);


        throw new AmbiguousResolutionException(violationMessage.toString());
    }

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            }
        }


        // multiple templating engines found
        if (instance.isAmbiguous()) {
            throw new AmbiguousResolutionException("Multiple TemplatingProviders found on classpath. Select the prefered one.");
        }


        provider = instance.get();
    }

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            throw new ResolutionException("cannot find beans for class " + type.getCanonicalName());
        }


        if (beans.size() > 1) 
        {
            throw new AmbiguousResolutionException("cannot find beans for class " + type.getCanonicalName());
        }


        @SuppressWarnings("unchecked")
        Bean<T> bean = (Bean<T>)beans.iterator().next();

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            throw new UnsatisfiedResolutionException(message.toString());
        }


        if (resolvedSet.size() > 1)
        {
            throw new AmbiguousResolutionException("There is more than one api type with : " + type.getName() + " with qualifiers : " + qualifierMessage);
        }


        Bean<?> bean = resolvedSet.iterator().next();
        WebBeansUtil.checkUnproxiableApiType(bean, bean.getScope());

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            return null;
        }


        if (set.size() > 1)
        {
            throw new AmbiguousResolutionException("There are more than one WebBeans with name : " + name);
        }


        component = (AbstractOwbBean<?>) set.iterator().next();


        object = getInstance(component, creationalContext);

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            set = this.injectionResolver.findBySpecialization(set);
        }
        
        if(set.size() > 0 && set.size() > 1)
        {
            throw new AmbiguousResolutionException("Ambigious resolution");
        }
        
        return (Bean<? extends X>)set.iterator().next();
    }

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