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## Package org.apache.openjpa.enhance

OpenJPA Enhancer

See:
Description

Interface Summary
ApplicationIdTool.ObjectIdLoader | Interface implemented by metadata factories that can load non-existant object id classes.
AttributeTranslator | Instances of this interface can convert a positional index for a `FieldMetaData` that uses property access into the underlying field name.
DynamicPersistenceCapable | Instances that implement this marker interface are dynamically-generated subtypes of managed types that were loaded before being enhanced.
DynamicStorage | Interface for dynamically generated classes.
FieldConsumer | Consumes persistent field values.
FieldManager | Manages persistent fields.
FieldSupplier | Supplies persistent field values.
ManagedInstanceProvider | Instances of this interface can provide an underlying instance.
PCDataGenerator.DynamicPCData | Dynamic `PCData`s generated will implement this interface to simplify initialization.
PCEnhancer.AuxiliaryEnhancer | Plugin interface for additional enhancement.
PCRegistry.RegisterClassListener | Listener for persistent class registration events.
PersistenceCapable | The interface that persistent instances will implement.
RuntimeUnenhancedClassesModes | Possible values for the `openjpa.RuntimeUnenhancedClasses` configuration setting.
StateManager | Internal state manager for managed instances.

Class Summary
ApplicationIdTool | Generates a class appropriate for use as an application identity class.
ApplicationIdTool.Flags | Run flags.
AsmAdaptor | Use ASM to add required StackMapTable attribute to the byte code generated by Serp.
ClassRedefiner | Redefines the method bodies of existing classes.
CodeGenerator | Generates Java class code from metadata.
DynamicStorageGenerator | Factory for creating new `DynamicStorage` classes.
InstrumentationFactory | Factory for obtaining an `Instrumentation` instance.
ManagedClassSubclasser | Redefines the method bodies of existing unenhanced classes to make them notify state managers of mutations.
PCClassFileTransformer | Transformer that makes persistent classes implement the `PersistenceCapable` interface at runtime.
PCDataGenerator | Generates `PCDataGenerator.DynamicPCData` instances which avoid primitive wrappers to optimize memory use and performance at the cost of slightly higher startup time.
PCEnhancer | Bytecode enhancer used to enhance persistent classes from metadata.
PCEnhancer.Flags | Run flags.
PCEnhancerAgent | Java agent that makes persistent classes work with OpenJPA at runtime.
PCRegistry | Tracks registered persistence-capable classes.
PCSubclassValidator | Validates that a given type meets the JPA contract, plus a few OpenJPA-specific additions for subclassing / redefinition: must have an accessible no-args constructor must be a public or protected class must not be final must not extend an enhanced class all persistent data represented by accessible setter/getter methods (persistent properties) if versioning is to be used, exactly one persistent property for the numeric version data When using property access, the backing field for a persistent property must be: private set only in the designated setter, in the constructor, or in `Object.clone()`, `readObject(ObjectInputStream)`, or `Externalizable#readExternal(ObjectInput)`. read only in the designated getter and the constructor.
RedefinitionHelper | Helper methods for managed types that use method redefinition for field tracking.
ReflectingPersistenceCapable | Implementation of the `PersistenceCapable` interface that can handle the persistence-capable contract for instances that were not enhanced before class load time.
Reflection | Reflection utilities used to support and augment enhancement.

## Package org.apache.openjpa.enhance Description

OpenJPA Enhancer

This package provides a bytecode enhancer used to post-process classes for use in a OpenJPA runtime. A tool for generating application identity class sourcecode is also provided.

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