Package org.apache.druid.guice

Class ExtensionFirstClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

org.apache.druid.guice.StandardURLClassLoader

org.apache.druid.guice.ExtensionFirstClassLoader

All Implemented Interfaces:

Closeable, AutoCloseable

public class ExtensionFirstClassLoader
extends StandardURLClassLoader

The ClassLoader that gets used when druid.extensions.useExtensionClassloaderFirst = true.

Constructor Summary

Constructors

Constructor	Description
ExtensionFirstClassLoader(URL[] urls, ClassLoader druidLoader, List<ClassLoader> extensionDependencyClassLoaders)

Method Summary

Modifier and Type	Method	Description
URL	getResource(String name)
Enumeration<URL>	getResources(String name)
Class<?>	loadClass(String name)
protected Class<?>	loadClass(String name, boolean resolve)

Methods inherited from class org.apache.druid.guice.StandardURLClassLoader

addExtensionResources, getExtensionDependencyClassLoaders, getResourceFromExtensionsDependencies, loadClassFromExtensionDependencies

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

Methods inherited from class java.lang.Object

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

Constructor Details

ExtensionFirstClassLoader

public ExtensionFirstClassLoader(URL[] urls,
 ClassLoader druidLoader,
 List<ClassLoader> extensionDependencyClassLoaders)

Method Details

loadClass

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

Overrides:

loadClass in class ClassLoader

Throws:

ClassNotFoundException

loadClass

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

Overrides:

loadClass in class StandardURLClassLoader

Throws:

ClassNotFoundException

getResource

public URL getResource(String name)

Overrides:

getResource in class StandardURLClassLoader

getResources

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

Overrides:

getResources in class StandardURLClassLoader

Throws:

IOException