[hibernate-dev] Optimizing reflection optimization

[Кирилл Кленский]

Hi,

Recently my task involved enabling hibernate reflection optimization in our
application.

Versions used:
hibernate-core-3.3.1.GA
javassist-3.4.GA

Below are some thoughts that hopefully could help to improve the product.

1. I have noticed that
org.hibernate.bytecode.javassist.BulkAccessorFactory.findAccessors(...) is
searching for accessor methods in the optimized entity class only. This
means that the methods from the superclasses are not visible during
BulkAccessor creation unless overridden by child classes. By enhancing the
algorithm to search down the inheritance tree we could avoid creation of
redundant methods which increase the code verbosity a lot. In our case
almost all the entities are inherited from the base classes having the
common entity properties defined, so the reflection optimization does not
work for any of them until we override the inherited methods in all the
child classes. The implementation is trivial, but I have got a ready
prototype if anybody is interested.

2. It seems that it should be also possible to optimize the EntityTuplizer's
getPropertyValue and setPropertyValue calls in the similar way how the
getPropertyValues and setPropertyValues are currently optimized.

Best regards,
Kirill Klenski