Add events to UnitOfWork

[AndrolGenhald]

Implement lifecycle events similar to doctrine-orm: http://doctrine-orm.readthedocs.io/projects/doctrine-orm/en/latest/reference/events.html

Since much of the implementation resides in doctrine/common, I'm hoping I'll be able to get at least some of the events implemented this weekend without too much trouble.

[ikwattro]

Thanks, yeah this is planned of course but not really in the priorities for now, if you come up with a PR that would be wonderful.

[ikwattro]

@AndrolGenhald Do you have any progress on this, if yes please open a PR so I can contribute and make some improvements for this implementation.

[AndrolGenhald]

I haven't started anything yet, I spent last night looking through doctrine-orm's implementation of lifecycle events. I was planning working on it over the weekend.

[ikwattro]

Right, I'll check also and maybe prepare some entry points for it. Thanks !

[ikwattro]

What is your actual use case for doctrine events ?

[ikwattro]

Ha yeah, DoctrineModule Form element

[AndrolGenhald]

I'm mainly looking to subscribe to the onFlush event to create historical copies of entities when they are changed, right now I'm handling it everywhere I call flush.

[ikwattro]

Interesting ! Do you have a screenshot of what your graph looks like after the historic is created ? You can even share privately if you want : christophe at graphaware dot com

[AndrolGenhald]

Sequence of events:

• Add 'Entity'
• Add 'attribute 1'
• Add 'attribute 2'
• Rename 'Entity' -> 'Entity (changed)'
• Add 'attribute 3'
• Rename 'attribute 1' -> 'attribute 1 (changed)'
• Rename 'Entity (changed)' -> 'Entity (changed again)'

[ikwattro]

Very cool !

[AzeemMichael]

There seems to be no recomputeSingleEntityChangeSet($meta, $entity); in unit of work. Wanted to create an event listener for onFlush so User::updatedAt field is set to current timestamp on node update.