Documentation: clarify that there is no lifecycle support

[arcuri82]

Hi,
after using Guice for a few weeks, to my surprise today I discovered that Guice has no support for fundamental lifecycle callbacks like @PostConstruct, and there is no intention to add it #62 (comment)

As @PostConstruct is a critical feature when you do field/set injection (no constructor injection), I am now in the situation to be forced to switch to another DI framework (likely Spring or CDI Weld), as Guice's workarounds are far too verbose or error prone (eg, InjectionListener or constructor injection).

It would be great if the documentation of Guice could be updated to clearly state that @PostConstructor is and will not be supported, eg a section called "No Lifecycle Support" under https://github.com/google/guice/wiki/Bindings

[drinkjava2]

You can use Spring's Java-based configuration, it should meet all your requirement. I think Guice is designed too complicated even compare to Spring to implement such simple functions. in fact Lifecycle Support is not hard to implemented, only need maintenance the context cache and use a "context chain" trick to let each singleton bean be cached in an context, and of cause, call predestry methods before context cache be emptied.
If you are doing some not important project, could you give a try of "jBeanBox" (https://github.com/drinkjava2/jBeanBox)? it's a small IOC/AOP tool only ~3000 lines source code but included all basic IOC/AOP functions, I promise you can learn how to use it in 10 minutes. I also use it on my project "jSqlBox" to do some Bean/DataSource/Transaction settings to replace Spring. it also used the "PreDestroy" callback function of jBeanBox's Lifecycle Support. jBeanBox is not recommended for important projects because it's pretty new, not well tested.

[pablogrisafi1975]

Netflix gobernator (https://github.com/Netflix/governator) Is a set of guice extencions that includes lifecycle annotations. It may help you.

[arcuri82]

thx. Governator is exactly what I wanted, and very easy to use ;) Would be very useful to mention it in the Guice documentation