# Package org.springframework.instrument.classloading

@NonNullApi @NonNullFields package org.springframework.instrument.classloading
Support package for load time weaving based on class loaders, as required by JPA providers (but not JPA-specific).

Related Packages
Package
Description
org.springframework.instrument.classloading.glassfish
Support for class instrumentation on GlassFish.
org.springframework.instrument.classloading.jboss
Support for class instrumentation on JBoss AS 6 and 7.
org.springframework.instrument.classloading.tomcat
Support for class instrumentation on Tomcat.
Class
Description
InstrumentationLoadTimeWeaver
`LoadTimeWeaver` relying on VM `Instrumentation`.
LoadTimeWeaver
Defines the contract for adding one or more `ClassFileTransformers` to a `ClassLoader`.
ReflectiveLoadTimeWeaver
`LoadTimeWeaver` which uses reflection to delegate to an underlying ClassLoader with well-known transformation hooks.
ResourceOverridingShadowingClassLoader
Subclass of ShadowingClassLoader that overrides attempts to locate certain files.
ShadowingClassLoader
ClassLoader decorator that shadows an enclosing ClassLoader, applying registered transformers to all affected classes.
SimpleInstrumentableClassLoader
Simplistic implementation of an instrumentable `ClassLoader`.
SimpleLoadTimeWeaver
`LoadTimeWeaver` that builds and exposes a `SimpleInstrumentableClassLoader`.
SimpleThrowawayClassLoader
ClassLoader that can be used to load classes without bringing them into the parent loader.
WeavingTransformer
ClassFileTransformer-based weaver, allowing for a list of transformers to be applied on a class byte array.