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Put up a warning sign that mapping may not be inherited from transient classes #10392

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Feb 8, 2023
Merged

Put up a warning sign that mapping may not be inherited from transient classes #10392

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Put up a warning sign that mapping may not be inherited from transien…
mpdude Jan 13, 2023
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Merge branch '2.14.x' into warning-unmapped-classes
mpdude Jan 25, 2023
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13 changes: 13 additions & 0 deletions docs/en/reference/inheritance-mapping.rst
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Expand Up @@ -32,6 +32,19 @@ need not have an ``#[Id]`` property.
For further support of inheritance, the single or
joined table inheritance features have to be used.

.. warning::

At least when using attributes or annotations to specify your mapping,
it _seems_ as if you could inherit from a base class that is neither
an entity nor a mapped superclass, but has properties with mapping configuration
on them that would also be used in the inheriting class.

This, however, is due to how the corresponding mapping
drivers work and what the PHP reflection API reports for inherited fields.

Such a configuration is explicitly not supported. To give just one example,
it will break for ``private`` properties.

.. note::

You may be tempted to use traits to mix mapped fields or relationships
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