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#1257 DDC-3300 DDC-3503 - providing upgrade notes for the breaking change in discriminator map declarations

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Marco Pivetta 2015-01-24 09:14:58 +01:00
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UPGRADE.md
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# Upgrade to 2.5
## Minor BC BREAK: discriminator map must now include all non-transient classes
It is now required that you declare the root of an inheritance in the
discriminator map.
When declaring an inheritance map, it was previously possible to skip the root
of the inheritance in the discriminator map. This was actually a validation
mistake by Doctrine2 and led to problems when trying to persist instances of
that class.
If you don't plan to persist instances some classes in your inheritance, then
either:
- make those classes `abstract`
- map those classes as `MappedSuperclass`
## Minor BC BREAK: ``EntityManagerInterface`` instead of ``EntityManager`` in type-hints
As of 2.5, classes requiring the ``EntityManager`` in any method signature will now require