DataNucleus Enhancer 3.1.1 API

DataNucleus runtime operates on classes that implement the PersistenceCapable interface.

See:
Description

Packages

org.datanucleus.enhancer	DataNucleus ByteCode enhancer.
org.datanucleus.enhancer.asm	Class Enhancer using ObjectWeb ASM (http://asm.objectweb.org).
org.datanucleus.enhancer.asm.method	Enhancement method representations for use with the ASM ClassEnhancer.
org.datanucleus.enhancer.asm.primarykey
org.datanucleus.enhancer.tools	Utilities to aid use of the Enhancer.
org.datanucleus.jdo	This is the JDO-compliant enhancer API for JDO2.3+

DataNucleus runtime operates on classes that implement the PersistenceCapable interface. To achieve this in a convenient way DataNucleus provides a byte-code enhancer to add in the necessary PersistenceCapable methods. DataNucleus's enhancer relies on DataNucleus Core providing the MetaData definition handling capabilities for the classes to be enhanced. To enhance each class, the enhancer requires a "ClassEnhancer". We currently provides 1 ClassEnhancer.

• A ClassEnhancer using the ASM library. This is much faster and more lightweight than the original BCEL variant and has better support for JDK1.5+ features. This is stored in packages under org.datanucleus.enhancer.asm

There was an original ClassEnhancer (present in DataNucleus AccessPlatform 1.0, using BCEL) but this was dropped during the 1.1 release cycle.

Support for this persistence layer is provided by way of a Free Forum (no guarantee of availability) or via Commercial Support from DataNucleus.