Doctrine thrown exception, when it is trying to remove not initialized proxy.

May be I'm wrong, but as workaround I made the following:
1. Added a _load method to Proxy interface (why it is not called IProxy?)
2. Made the _load method public (in ProxyFactory)
3. Added another one case to getEntityState method:

            if ($entity instanceof \Doctrine\ORM\Proxy\Proxy) {
                $entity->_load();
            } elseif ($assume === null) {

What is the error/exception you are getting? Please show the full stack trace in case of an exception.

This code:

$product->pictures->removeElement($picture);
$picture->resetProduct();

will only remove the association, not the picture or the file, thus remove cascades would not even apply.

Please show the full code you're using (models etc.) and the error or unexpected behavior you're getting, so that we can try to reproduce it.

It will take many time, because my project has a huge infrastructure. I write when I reproduce it in console.

I have attached test project in which I reproduced this problem.
What I did:
1. I created schema manually (user create.sql file)
2. I generated model classes (by doctrine-cli.php script)
3. Made a little changes in annotations (I just added OneToMany between product and picture)
4. Run script pictest.php
Steps for reproducing:
1. create schema from create.sql file
2. fix connection string in dbconfig.php
3. run pictest.sql

Please create a unit-test, in the schema of tests\Doctrine\Tests\ORM\Functional\Ticket and attach it as a .patch or .diff or .php file. This is not a minimal re-produce case that can be easily understood or run by us.

Could you please provide some kind of documentation (or link to it) on how to create such unit tests.
I understand, that my test enviroment is not convenient for you, but it countains only initialization code and issue code. It's a minimal code which required for reproducing. If you spend a little time, you would see...

Verified, attached the testcase

@Valery: The attached file shows the test-case for your behaviour, its a stripped down 200 lines php file compared to your 30kb rar file

The problem is easily explained:

Reference / Proxy objects are not marked as MANAGED in the UnitOfWork if they are initialized through a hydrator compared to calling `getReference()`

Updated test-case that shows when it works, when it fails.

Fixed

Thanks for the fix!
@Benjamin Eberlei: I see. But know nothing about how you are writing a test-cases. May be it would be useful to provide documentation (simple instruction) about it.Possible, then my experience will bring a little more benefits for you..