Package com.google.appengine.tools.enhancer

Class EnhancerLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

com.google.appengine.tools.enhancer.EnhancerLoader

All Implemented Interfaces:

Closeable, AutoCloseable

public class EnhancerLoader
extends URLClassLoader

A ClassLoader for the ORM (DataNucleus) enhancer.

This ClassLoader allows us to isolate the enhancer from our dependencies as well as prevent log4j from loading (which causes the enhancer to automatically use log4j for logging).

Constructor Summary

Constructors

Constructor	Description
EnhancerLoader(Set<URL> enhanceTargets)	Deprecated. Use EnhancerLoader(java.util.Set, String)
EnhancerLoader(Set<URL> enhanceTargets, String datanucleusVersion)	Creates a new EnhancerLoader capable of running the Enhancer.

Method Summary

Modifier and Type	Method	Description
protected Class<?>	loadClass(String name, boolean resolve)	Loads classes from only ourself and the bootstrap classloader.

Methods inherited from class java.net.URLClassLoader

addURL, close, definePackage, findClass, findResource, findResources, getPermissions, getResourceAsStream, getURLs, newInstance, newInstance

Methods inherited from class java.security.SecureClassLoader

defineClass, defineClass

Methods inherited from class java.lang.ClassLoader

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

Methods inherited from class java.lang.Object

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

Constructor Detail

EnhancerLoader

@Deprecated
public EnhancerLoader(Set<URL> enhanceTargets)

Deprecated.

Use EnhancerLoader(java.util.Set, String)

Creates a new EnhancerLoader capable of running the Enhancer.

EnhancerLoader

public EnhancerLoader(Set<URL> enhanceTargets,
                      String datanucleusVersion)

Creates a new EnhancerLoader capable of running the Enhancer.

Method Detail

loadClass

protected Class<?> loadClass(String name,
                             boolean resolve)
                      throws ClassNotFoundException

Loads classes from only ourself and the bootstrap classloader. Does not load classes from the system classloader. Does not load log4j classes from anywhere.

Overrides:

loadClass in class ClassLoader

Throws:

ClassNotFoundException