Class CachingWebAppClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

org.eclipse.jetty.ee9.webapp.WebAppClassLoader

org.eclipse.jetty.ee9.webapp.CachingWebAppClassLoader

All Implemented Interfaces:

Closeable, AutoCloseable, ClassVisibilityChecker

@ManagedObject
public class CachingWebAppClassLoader
extends WebAppClassLoader

A WebAppClassLoader that caches getResource(String) results. Specifically this ClassLoader caches not found classes and resources, which can greatly increase performance for applications that search for resources.

Nested Class Summary

Nested classes/interfaces inherited from class WebAppClassLoader

WebAppClassLoader.Context

Constructor Summary

Constructors

Constructor	Description
CachingWebAppClassLoader(ClassLoader parent, WebAppClassLoader.Context context)
CachingWebAppClassLoader(WebAppClassLoader.Context context)

Method Summary

Modifier and Type	Method	Description
void	clearCache()
URL	getResource(String name)	Get a resource from the classloader
Class<?>	loadClass(String name)
String	toString()

Methods inherited from class WebAppClassLoader

addClassPath, addClassPath, addJars, addTransformer, close, findClass, foundClass, getContext, getName, getPermissions, getResources, isHiddenClass, isProtectedClass, loadAsResource, loadClass, removeTransformer, runWithServerClassAccess, setName

Methods inherited from class URLClassLoader

addURL, definePackage, findResource, findResources, getResourceAsStream, getURLs, newInstance, newInstance

Methods inherited from class SecureClassLoader

defineClass, defineClass

Methods inherited from class ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findClass, findLibrary, findLoadedClass, findResource, findSystemClass, getClassLoadingLock, getDefinedPackage, getDefinedPackages, getPackage, getPackages, getParent, getPlatformClassLoader, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, getUnnamedModule, isRegisteredAsParallelCapable, registerAsParallelCapable, resolveClass, resources, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class Object

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

Methods inherited from interface ClassVisibilityChecker

isServerClass, isSystemClass

Constructor Details

CachingWebAppClassLoader

public CachingWebAppClassLoader(ClassLoader parent,
 WebAppClassLoader.Context context)
                         throws IOException

Throws:

IOException

CachingWebAppClassLoader

public CachingWebAppClassLoader(WebAppClassLoader.Context context)
                         throws IOException

Throws:

IOException

Method Details

getResource

public URL getResource(String name)

Description copied from class: WebAppClassLoader

Get a resource from the classloader

NOTE: this method provides a convenience of hacking off a leading / should one be present. This is non-standard and it is recommended to not rely on this behavior

Overrides:

getResource in class WebAppClassLoader

loadClass

public Class<?> loadClass(String name)
                   throws ClassNotFoundException

Overrides:

loadClass in class ClassLoader

Throws:

ClassNotFoundException

clearCache

@ManagedOperation
public void clearCache()

toString

public String toString()

Overrides:

toString in class WebAppClassLoader