org.apache.flink.util

Class FlinkUserCodeClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

org.apache.flink.util.MutableURLClassLoader

org.apache.flink.util.FlinkUserCodeClassLoader

All Implemented Interfaces:

Closeable, AutoCloseable

Direct Known Subclasses:

ChildFirstClassLoader, FlinkUserCodeClassLoaders.ParentFirstClassLoader

public abstract class FlinkUserCodeClassLoader
extends MutableURLClassLoader

This class loader accepts a custom handler if an exception occurs in loadClass(String, boolean).

Field Summary

Fields

Modifier and Type	Field and Description
protected Consumer<Throwable>	classLoadingExceptionHandler
static Consumer<Throwable>	NOOP_EXCEPTION_HANDLER

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	FlinkUserCodeClassLoader(URL[] urls, ClassLoader parent)
protected	FlinkUserCodeClassLoader(URL[] urls, ClassLoader parent, Consumer<Throwable> classLoadingExceptionHandler)

Method Summary

Modifier and Type	Method and Description
Class<?>	loadClass(String name, boolean resolve)
protected Class<?>	loadClassWithoutExceptionHandling(String name, boolean resolve) Same as loadClass(String, boolean) but without exception handling.

Methods inherited from class org.apache.flink.util.MutableURLClassLoader

addURL, copy

Methods inherited from class java.net.URLClassLoader

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, 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

Field Detail

NOOP_EXCEPTION_HANDLER

public static final Consumer<Throwable> NOOP_EXCEPTION_HANDLER

classLoadingExceptionHandler

protected final Consumer<Throwable> classLoadingExceptionHandler

Constructor Detail

FlinkUserCodeClassLoader

protected FlinkUserCodeClassLoader(URL[] urls,
                                   ClassLoader parent)

FlinkUserCodeClassLoader

protected FlinkUserCodeClassLoader(URL[] urls,
                                   ClassLoader parent,
                                   Consumer<Throwable> classLoadingExceptionHandler)

Method Detail

loadClass

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

Overrides:

loadClass in class ClassLoader

Throws:

ClassNotFoundException

loadClassWithoutExceptionHandling

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

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

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

Throws:

ClassNotFoundException