org.apache.flink.util

类 ChildFirstClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

org.apache.flink.util.MutableURLClassLoader

org.apache.flink.util.FlinkUserCodeClassLoader

org.apache.flink.util.ChildFirstClassLoader

所有已实现的接口:

Closeable, AutoCloseable

public final class ChildFirstClassLoader
extends FlinkUserCodeClassLoader

A variant of the URLClassLoader that first loads from the URLs and only after that from the parent.

URLClassLoader.getResourceAsStream(String) uses getResource(String) internally so we don't override that.

字段概要

从类继承的字段 org.apache.flink.util.FlinkUserCodeClassLoader

classLoadingExceptionHandler, NOOP_EXCEPTION_HANDLER

构造器概要

构造器

构造器和说明
ChildFirstClassLoader(URL[] urls, ClassLoader parent, String[] alwaysParentFirstPatterns, Consumer<Throwable> classLoadingExceptionHandler)

方法概要

限定符和类型	方法和说明
MutableURLClassLoader	copy() Copy the classloader for each job and these jobs can add their jar files to the classloader independently.
URL	getResource(String name)
Enumeration<URL>	getResources(String name)
protected Class<?>	loadClassWithoutExceptionHandling(String name, boolean resolve) Same as FlinkUserCodeClassLoader.loadClass(String, boolean) but without exception handling.

从类继承的方法 org.apache.flink.util.FlinkUserCodeClassLoader

loadClass

从类继承的方法 org.apache.flink.util.MutableURLClassLoader

addURL

从类继承的方法 java.net.URLClassLoader

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

从类继承的方法 java.security.SecureClassLoader

defineClass, defineClass

从类继承的方法 java.lang.ClassLoader

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

从类继承的方法 java.lang.Object

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

构造器详细资料

ChildFirstClassLoader

public ChildFirstClassLoader(URL[] urls,
                             ClassLoader parent,
                             String[] alwaysParentFirstPatterns,
                             Consumer<Throwable> classLoadingExceptionHandler)

方法详细资料

loadClassWithoutExceptionHandling

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

从类复制的说明: FlinkUserCodeClassLoader

Same as FlinkUserCodeClassLoader.loadClass(String, boolean) but without exception handling.

Extending concrete class loaders should implement this instead of FlinkUserCodeClassLoader.loadClass(String, boolean).

覆盖:

loadClassWithoutExceptionHandling 在类中 FlinkUserCodeClassLoader

抛出:

ClassNotFoundException

getResource

public URL getResource(String name)

覆盖:

getResource 在类中 ClassLoader

getResources

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

覆盖:

getResources 在类中 ClassLoader

抛出:

IOException

copy

public MutableURLClassLoader copy()

从类复制的说明: MutableURLClassLoader

Copy the classloader for each job and these jobs can add their jar files to the classloader independently.

指定者:

copy 在类中 MutableURLClassLoader

返回:

the copied classloader