OverridingClassLoader (Spring Framework API 2.1) - Spring Framework 2.1.0 API 文档英文版

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org.springframework.core
Class OverridingClassLoader

java.lang.Object
  java.lang.ClassLoader
      org.springframework.core.OverridingClassLoader

Direct Known Subclasses:: SimpleInstrumentableClassLoader, SimpleThrowawayClassLoader

public class OverridingClassLoader
extends ClassLoader
extends ClassLoader

ClassLoader that does not always delegate to the parent loader, as normal class loaders do. This enables, for example, instrumentation to be forced in the overriding ClassLoader, or a "throwaway" class loading behavior, where selected classes are temporarily loaded in the overriding ClassLoader, in order to be load an instrumented version of the class in the parent ClassLoader later on.

Since:: 2.0.1
Author:: Rod Johnson, Juergen Hoeller

Constructor Summary

OverridingClassLoader(ClassLoader parent)
          Create a new OverridingClassLoader for the given class loader.

Method Summary

void excludeClass(String className)
          Add a class name to exclude from overriding.

void excludePackage(String packageName)
          Add a package name to exclude from overriding.

protected boolean isEligibleForOverriding(String className)
          Determine whether the specified class is eligible for overriding by this class loader.

protected Class loadClass(String name, boolean resolve)


protected byte[] transformIfNecessary(String name, byte[] bytes)
          Transformation hook to be implemented by subclasses.

Methods inherited from class java.lang.ClassLoader

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

Methods inherited from class java.lang.Object

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

Constructor Summary
`OverridingClassLoader(ClassLoader parent)` Create a new OverridingClassLoader for the given class loader.

Method Summary
`void`	`excludeClass(String className)` Add a class name to exclude from overriding.
`void`	`excludePackage(String packageName)` Add a package name to exclude from overriding.
`protected boolean`	`isEligibleForOverriding(String className)` Determine whether the specified class is eligible for overriding by this class loader.
`protected Class`	`loadClass(String name, boolean resolve)`
`protected byte[]`	`transformIfNecessary(String name, byte[] bytes)` Transformation hook to be implemented by subclasses.

Methods inherited from class java.lang.ClassLoader
`clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findClass, findLibrary, findLoadedClass, findResource, findResources, findSystemClass, getPackage, getPackages, getParent, getResource, getResourceAsStream, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, 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