org.datanucleus.enhancer

Class ImplementationGenerator

java.lang.Object

org.datanucleus.enhancer.ImplementationGenerator

public class ImplementationGenerator
extends Object

Implementation generator using ASM bytecode manipulation library.

Field Summary

Fields

Modifier and Type	Field and Description
protected byte[]	bytes bytes for the implementation class.
protected String	className Class name of the implementation.
protected String	fullClassName Fully-qualified class name (including package) of the implementation.
protected String	fullSuperclassName Class name for the superclass.
protected AbstractClassMetaData	inputCmd Meta data for the abstract-class/interface
protected MetaDataManager	metaDataMgr

Constructor Summary

Constructors

Constructor and Description
ImplementationGenerator(ClassMetaData cmd, String implClassName, MetaDataManager mmgr) Constructor for an implementation of an abstract class.
ImplementationGenerator(InterfaceMetaData interfaceMetaData, String implClassName, MetaDataManager mmgr) Constructor for an implementation of a persistent interface.

Method Summary

Modifier and Type	Method and Description
protected void	createDefaultConstructor() Create a default constructor, assuming that there is no persistent superclass.
protected void	createGetter(AbstractMemberMetaData mmd) Create a getter method for a /property.
protected void	createPropertyFields() Creates fields for the properties of this class and super classes.
protected void	createPropertyFields(AbstractClassMetaData acmd) Create the fields for the implementation.
protected void	createPropertyMethods() Create getters and setters methods for this class and super classes
protected void	createPropertyMethods(AbstractClassMetaData acmd) Create getters and setters methods.
protected void	createSetter(AbstractMemberMetaData mmd) Create a setter method for a property.
void	dumpToFile(String filename) Convenience method to dump the generated class to the specified file.
void	enhance(ClassLoaderResolver clr) Enhance the implementation of the class/interface.
byte[]	getBytes() Accessor for the byte representation of the generated class.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

metaDataMgr

protected final MetaDataManager metaDataMgr

inputCmd

protected final AbstractClassMetaData inputCmd

Meta data for the abstract-class/interface

className

protected final String className

Class name of the implementation.

fullClassName

protected final String fullClassName

Fully-qualified class name (including package) of the implementation.

fullSuperclassName

protected String fullSuperclassName

Class name for the superclass.

bytes

protected byte[] bytes

bytes for the implementation class.

Constructor Detail

ImplementationGenerator

public ImplementationGenerator(InterfaceMetaData interfaceMetaData,
                               String implClassName,
                               MetaDataManager mmgr)

Constructor for an implementation of a persistent interface.

Parameters:

interfaceMetaData - MetaData for the persistent interface

implClassName - Name of the implementation class to generate (omitting packages)

mmgr - MetaData manager

ImplementationGenerator

public ImplementationGenerator(ClassMetaData cmd,
                               String implClassName,
                               MetaDataManager mmgr)

Constructor for an implementation of an abstract class.

Parameters:

cmd - MetaData for the abstract class

implClassName - Name of the implementation class to generate (omitting packages)

mmgr - MetaData manager

Method Detail

getBytes

public byte[] getBytes()

Accessor for the byte representation of the generated class.

Returns:

the byte representation of the class

createPropertyFields

protected void createPropertyFields()

Creates fields for the properties of this class and super classes.

createPropertyMethods

protected void createPropertyMethods()

Create getters and setters methods for this class and super classes

createPropertyMethods

protected void createPropertyMethods(AbstractClassMetaData acmd)

Create getters and setters methods.

Parameters:

acmd - AbstractClassMetaData

dumpToFile

public void dumpToFile(String filename)

Convenience method to dump the generated class to the specified file.

Parameters:

filename - Name of the file to dump to

enhance

public void enhance(ClassLoaderResolver clr)

Enhance the implementation of the class/interface.

Parameters:

clr - ClassLoader resolver

createPropertyFields

protected void createPropertyFields(AbstractClassMetaData acmd)

Create the fields for the implementation.

Parameters:

acmd - MetaData for the class/interface

createDefaultConstructor

protected void createDefaultConstructor()

Create a default constructor, assuming that there is no persistent superclass.

createGetter

protected void createGetter(AbstractMemberMetaData mmd)

Create a getter method for a /property.

Parameters:

mmd - MetaData for the property

createSetter

protected void createSetter(AbstractMemberMetaData mmd)

Create a setter method for a property.

Parameters:

mmd - MetaData for the property