com.alipay.sofa.ark.springboot.loader

Class CachedLaunchedURLClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

org.springframework.boot.loader.LaunchedURLClassLoader

com.alipay.sofa.ark.springboot.loader.CachedLaunchedURLClassLoader

All Implemented Interfaces:

Closeable, AutoCloseable

public class CachedLaunchedURLClassLoader
extends org.springframework.boot.loader.LaunchedURLClassLoader

A cached LaunchedURLClassLoader to accelerate load classes and resources. NOTE: 1. Not found classes will be cached. 2. If findResources(name) return null Enumeration, then it will be cached. 3. findResource(name) will always be cached no matter it was found or not found. 4. Otherwise, classes or resources-enumeration will not be cached explicitly.

Author:

bingjie.lbj

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	CachedLaunchedURLClassLoader.LoadClassResult

Constructor Summary

Constructors

Constructor and Description
CachedLaunchedURLClassLoader(boolean exploded, org.springframework.boot.loader.archive.Archive rootArchive, URL[] urls, ClassLoader parent)

Method Summary

Modifier and Type	Method and Description
URL	findResource(String name)
Enumeration<URL>	findResources(String name)
protected Class<?>	loadClass(String name, boolean resolve)
protected Class<?>	loadClassWithCache(String name, boolean resolve) NOTE: Only cache ClassNotFoundException when class not found.

Methods inherited from class org.springframework.boot.loader.LaunchedURLClassLoader

clearCache, definePackage, definePackage

Methods inherited from class java.net.URLClassLoader

addURL, close, findClass, 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, 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

CachedLaunchedURLClassLoader

public CachedLaunchedURLClassLoader(boolean exploded,
                                    org.springframework.boot.loader.archive.Archive rootArchive,
                                    URL[] urls,
                                    ClassLoader parent)

Method Detail

loadClass

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

Overrides:

loadClass in class org.springframework.boot.loader.LaunchedURLClassLoader

Throws:

ClassNotFoundException

findResource

public URL findResource(String name)

Overrides:

findResource in class org.springframework.boot.loader.LaunchedURLClassLoader

findResources

public Enumeration<URL> findResources(String name)
                               throws IOException

Overrides:

findResources in class org.springframework.boot.loader.LaunchedURLClassLoader

Throws:

IOException

loadClassWithCache

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

NOTE: Only cache ClassNotFoundException when class not found. If class found, do not cache, and just use parent class loader cache.

Throws:

ClassNotFoundException