DDC-3799: Unexpected outcome when using prePersist event and ID GeneratedValue strategy is set to NONE #4655

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admin · 2026-01-22T14:46:54+01:00

admin commented

2026-01-22 14:46:54 +01:00

Originally created by @doctrinebot on GitHub (Jun 29, 2015).

Originally assigned to: @beberlei on GitHub.

Jira issue originally created by user yanick:

Setup: I have an entity that uses natural ids (GeneratedValue strategy is set to none). The entity also has life cycle callbacks for prePersist and preUpdate.

Expectation: The UnitOfWork would throw an EntityNotFoundException if I attempt to merge an untracked entity that does not exist in the database. I can catch the exception and call persist. All life cycle callbacks would be executed.

Outcome: No exception is thrown. The UOW creates a new instance of the the incoming object using only the ID. Persist is called on the newly created object and prePersist executes against the empty object. Finally the incoming entity is merged, which overwrites any properties that are managed by prePersist.

I was able to work around this by setting the GeneratedValue strategy to "Custom" and CustomIDGenerator to the AssignedGenerator.

Originally created by @doctrinebot on GitHub (Jun 29, 2015). Originally assigned to: @beberlei on GitHub. Jira issue originally created by user yanick: Setup: I have an entity that uses natural ids (GeneratedValue strategy is set to none). The entity also has life cycle callbacks for prePersist and preUpdate. Expectation: The UnitOfWork would throw an EntityNotFoundException if I attempt to merge an untracked entity that does not exist in the database. I can catch the exception and call persist. All life cycle callbacks would be executed. Outcome: No exception is thrown. The UOW creates a new instance of the the incoming object using only the ID. Persist is called on the newly created object and prePersist executes against the empty object. Finally the incoming entity is merged, which overwrites any properties that are managed by prePersist. I was able to work around this by setting the GeneratedValue strategy to "Custom" and CustomIDGenerator to the AssignedGenerator.

admin added the Bug label 2026-01-22 14:46:54 +01:00

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Reference: doctrine/archived-orm#4655