[cdi-dev] Question regarding producer methods and default no-arg constructor

Radim Hanuš radim.hanus at gmail.com
Fri Jan 2 16:58:34 EST 2015

Hi Michael,

you may also consider the following possibilities:

1) the class defining producer method is not a bean itself (in CDI 1.2 use
beans.xml with both version 1.1 and bean-discovery-mode of annotated and
don't apply any bean defining annotation)

2) define a qualifier and use it either on bean or producer method in
conjunction with inject


2015-01-02 17:02 GMT+01:00 Michael Remijan <mjremijan at yahoo.com>:

> Greetings,
> I recently ran into a situation where I had created a producer method for
> an object but when Weld was starting up I got errors about something being
> ambiguous.  I finally tracked the issue to the fact that the bean my
> producer method was responsible for producing only had a default no-arg
> constructor.  I was able to "work around" this problem by annotating the
> bean as an @Alternative.  So I have a few questions.
> (1)
> Is this expected behavior from CDI? If a bean only has the default no-arg
> constructor should you get an ambiguous error if you also have a producer
> method for the bean?
> (2)
> Is annotating the bean as an @Alternative an acceptable "work around"?
> Seems hackish to me. If not, what is the appropriate solution.
> Thanks!
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