Class EnhancerClassLoader

java.lang.Object

java.lang.ClassLoader

org.datanucleus.enhancer.EnhancerClassLoader

public final class EnhancerClassLoader
extends ClassLoader

ClassLoader for newly defined classes. Parent classloader is the context classloader obtained during instantiation of this class

Field Summary

Fields

Modifier and Type	Field	Description
(package private) ClassLoaderResolver	delegate	Delegate ClassLoaderResolver may be used during class definition if the class has links to other classes.
(package private) boolean	loadingClass	flag to avoid reentrant invocations to loading operations
(package private) boolean	loadingResource	flag to avoid reentrant invocations to loading operations

Constructor Summary

Constructors

Constructor	Description
EnhancerClassLoader()
EnhancerClassLoader(ClassLoaderResolver iDelegate)

Method Summary

Modifier and Type	Method	Description
void	defineClass(String fullClassName, byte[] bytes, ClassLoaderResolver clr)	Define a class in this ClassLoader.
protected URL	findResource(String name)	Overwrite to have an opportunity to find resources from the delegate ClassLoaderResolver
Class	loadClass(String name)	Overwrite to have an opportunity to load classes from the delegate ClassLoaderResolver

Methods inherited from class ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findClass, findLibrary, findLoadedClass, findResources, findSystemClass, getClassLoadingLock, getPackage, getPackages, getParent, getResource, getResourceAsStream, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, registerAsParallelCapable, resolveClass, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class Object

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

Field Details

delegate

ClassLoaderResolver delegate

Delegate ClassLoaderResolver may be used during class definition if the class has links to other classes.

loadingClass

boolean loadingClass

flag to avoid reentrant invocations to loading operations

loadingResource

boolean loadingResource

flag to avoid reentrant invocations to loading operations

Constructor Details

EnhancerClassLoader

public EnhancerClassLoader()

EnhancerClassLoader

public EnhancerClassLoader(ClassLoaderResolver iDelegate)

Method Details

defineClass

public void defineClass(String fullClassName,
 byte[] bytes,
 ClassLoaderResolver clr)

Define a class in this ClassLoader.

Parameters:

fullClassName - the class name

bytes - the bytes representation of the class

clr - the ClassLoaderResolver to load linked classes

loadClass

public Class loadClass(String name)
                throws ClassNotFoundException

Overwrite to have an opportunity to load classes from the delegate ClassLoaderResolver

Overrides:

loadClass in class ClassLoader

Throws:

ClassNotFoundException

findResource

protected URL findResource(String name)

Overwrite to have an opportunity to find resources from the delegate ClassLoaderResolver

Overrides:

findResource in class ClassLoader