public final class CorePrefixFilter
extends Object
We differentiate between core classes and application classes during symbol
resolution for the purposes of entity enhancement.
The discriminator is the prefix of the fully qualified classname, for
example it could be package names.
The "core classes" don't have to be comprehensively defined: we want a small
set of prefixes for which we know with certainty that a)They won't be used
in application code (assuming people honour reasonable package name rules)
or any code that needs being enhanced. and b) frequently need to be looked up
during the enhancement process.
A great example is the "jakarta.persistence.Entity" annotation: we'll most likely
need to load it when doing any form of introspection on user's code, but we expect
the bytecode which represents the annotation to not be enhanced.
We then benefit from caching such representations of object types which are frequently
loaded; since caching end user code would lead to enhancement problems, it's best
to keep the list conservative when in doubt.
For example, don't consider all of "org.hibernate." prefixes as safe, as
that would include entities used during our own testsuite and entities defined by Envers.