[cdi-dev] Constructor dependency

[Sebastian Łaskawiec]

Thanks Martin for the explanation!

Are there any plans to propagate this behavior to the spec?

Thanks
Sebastian

On 07/07/2015 02:26 PM, Martin Kouba wrote:
> Hi Sebastian,
>
> the "superfluous" constructor is required for client proxies (i.e. for 
> normal-scoped beans). Weld may use non-portable JVM APIs that allow to 
> allocate proxy instances without this constructor (Unsafe). The 
> feature is called "Relaxed construction" [1]. Again, this feature is 
> not portable.
>
> Martin
>
> [1]
> http://docs.jboss.org/weld/reference/latest/en-US/html/configure.html#relaxedConstruction 
>
>
> Dne 7.7.2015 v 14:18 Sebastian Łaskawiec napsal(a):
>> Hey!
>>
>> I've seen CDI 2.0 Early Draft - congratulations! Looks very promising!
>>
>> I would like to ask about something slightly different than CDI 2.0 -
>> constructor injection. I'm a big fan of using it because I can easily
>> inject mocks into tested objects. This way I can limit the number of
>> Arquillian tests and speed up testing phase in my project.
>>
>> However the drawback is that need 2 constructors in my beans:
>>
>> @ApplicationScoped
>> public class MyBean {
>>       public MyBean() {
>>       }
>>
>>       @Inject
>>       public MyBean(OtherBean bean) {
>>       }
>> }
>>
>> Is it possible to get rid of the zero-parameter constructor? I can
>> imagine that it may be required by dependency resolution mechanism (for
>> example instantiating beans with cyclic dependencies A -> B -> C -> A),
>> but on the other hand we actually can create an instance without calling
>> a constructor - using Unsafe (but using Unsafe is always questionable).
>>
>> Could you please tell me if there are any plans around this topic?
>>
>> Thanks
>> Sebastian
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>