How does Guice handles exceptions during constructor injection

[Pedro Felix]

How does guice handles exceptions throwed by a constructor during
constructor injection?

Thanks
Pedro Felix

[crazy...@gmail.com]

It wraps them and rethrows them (out through Provider.get(),
Injector.getInstance(), etc.).

Bob

[Pedro Felix]

Thanks for the quick reply.
I have some more questions regarding this subject, however I didn't
found any good documentation regarding these issues. Do you know a
good one?
If the response is negative, here are my additional questions

1) Does this behavior apply to both checked and unchecked exceptions?
2) Does this behavior applies to exceptions throwed during property
injection?
3) If a dependency is optional, the occurrence of an exception when
creating the dependency object ends the "getInstance" or it this
dependency ignored?

Once again, thanks
Pedro Felix

On Nov 5, 5:05 pm, "crazybob...@gmail.com" <crazybob...@gmail.com>
wrote:

[Bob Lee]

On Thu, Nov 5, 2009 at 9:33 AM, Pedro Felix <pmhs...@gmail.com> wrote:

1) Does this behavior apply to both checked and unchecked exceptions?

Yes.

 

2) Does this behavior applies to exceptions throwed during property
injection?

Yes.

 

3) If a dependency is optional, the occurrence of an exception when
creating the dependency object ends the "getInstance" or it this
dependency ignored?

The exception is thrown.

If you want to throw and catch an exception, I'd recommend implementing a custom factory that throws a checked exception. For example:

  interface MyProvider<T> {

    T get() throws MyException;

  }

Bob 

[dg]

Also new-in-2.0 ThrowingProvider and ThrowingProviderBinder

On Nov 5, 10:07 am, Bob Lee <crazybob...@gmail.com> wrote: