Package org.datanucleus.enhancer

DataNucleus ByteCode enhancer framework.

See: Description

Interface Summary

Interface	Description
ClassEnhancer	Interface representation of an enhancer of a class.
EnhancementHelper.RegisterClassListener
EnhancementNamer	Interface defining the naming of fields/classes used in enhancement.

Class Summary

Class	Description
ClassEnhancerImpl	Class enhancer using ASM (see http://asm.objectweb.org but included in DataNucleus core repackaged).
ClassEnhancerImpl.MyClassVisitor	Convenience class to look up the class name for a file.
ClassField	Representation of a field that an enhanced class requires.
ClassMethod	Representation of a method that an enhanced class requires.
DataNucleusClassFileTransformer	Entry Point (as per Java) for transforming classes at runtime.
DataNucleusEnhancer	DataNucleus Byte-Code Enhancer.
EnhancementHelper	Helper class for the DN bytecode enhancement contract.
EnhancementNucleusContextImpl	NucleusContext to use when enhancing.
EnhancerClassAdapter	Adapter visitor class for providing enhancement of an existing class using ASM.
EnhancerClassChecker	Visitor used to check the enhancement state of a class.
EnhancerClassLoader	ClassLoader for newly defined classes.
EnhancerMethodAdapter	Adapter for methods in persistence-enabled classes allowing enhancement of direct access to user fields.
EnhancerPropertyGetterAdapter	Adapter for property getter methods in persistence-enabled classes.
EnhancerPropertySetterAdapter	Adapter for property setter methods in persistence-enabled classes.
EnhancerTask	Enhancer Ant Task.
EnhanceUtils	Utility class for bytecode enhancement using ASM.
ImplementationCreatorImpl	Creator of persistable objects using the ASM bytecode manipulation library.
ImplementationGenerator	Implementation generator using ASM bytecode manipulation library.
JDOEnhancementNamer	Definition of enhancement naming, for use with the JDO API.
JPAEnhancementNamer	Definition of enhancement naming for use with the JPA API.
PrimaryKeyGenerator	Class to handle the generation of a PK class for a persistable class.
RuntimeEnhancer	Class that will enhance a class at runtime, called via "javaagent".
RuntimeEnhancer.EnhancerClassLoader	This classloader is used to load any classes that are necessary during enhancement process, and avoid using application classloaders to load classes

Exception Summary

Exception	Description
NucleusEnhanceException	Exception thrown during enhancement when an error occurs.

Package org.datanucleus.enhancer Description

DataNucleus ByteCode enhancer framework. The DataNucleusEnhancer class is the typical entry point for command line usage. DataNucleus supports persistence where the persistable classes are bytecode enhanced to a particular contract to facilitate easier access to field values, and when fields are changed. The bytecode enhancement contract that is used here is based on the JDO bytecode enhancement contract, and uses ASM to perform the enhancement.