entity: add new entity-listener tag

[beuss]

Allow entities to declare listeners that'll be invoked during lifecycle.
This allows to perform consistency checks in a more reliable way than
overriding repository save() method as listeners are called even in case
of cascading persist.
Annotation has been modified to allow avoiding imports since for
@EntityListeners we need to pass .class which doesn't play well with
autoimport. Alternative would have been to import and append '.class' to
annotation param by the mean of another boolean parameter.

[axeloradmin]

We already have plan for this feature. However, it was not implemented because of one limitation of listeners (we can't use entity manager inside them). Still it can be useful for pure computation/validation. We'll consider it for next 5.1 or 5.2 release.

BTW, would you please sign the CLA?

[beuss]

Hi,
Yes, the limitation is quite annoying but as you said, it can still be useful for basic consistency checks.
The CLA has been signed and sent long time ago (25/10/2017) and sent to [email protected] as requested
Regards

[axeloradmin]

Would you please rebase this patch on dev branch? We'll integrate it in 5.1 release.

[beuss]

@axeloradmin Done :-)

[axeloradmin]

See the comments and make the changes accordingly.

[beuss]

@axelor all requesdt changes have been taken into account

[axeloradmin]

Would you please make the required change listeners += it.'@class'.text() and amend the commit? We are planing to merge this for 5.1.0 soon.

[beuss]

Would you please make the required change listeners += it.'@class'.text() and amend the commit? We are planing to merge this for 5.1.0 soon.

Hi

Can't see what you're talking about, for me all changes (including the listenerClass to class rename) have been applied. Can you be more specific? (sorry if it's obvious)

Regards

[axeloradmin]

Change line 209 to listeners += it.'@class'.text(). There is no need to append .class.

[beuss]

Change line 209 to listeners += it.'@class'.text(). There is no need to append .class.

Done

[axeloradmin]

The patch is cherry picked and amended with few changes. It's now included in dev branch. Thanks!