org.apache.flink.util

Class FlinkUserCodeClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

org.apache.flink.util.FlinkUserCodeClassLoader

All Implemented Interfaces:

Closeable, AutoCloseable

Direct Known Subclasses:

ChildFirstClassLoader

public abstract class FlinkUserCodeClassLoader
extends URLClassLoader

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

Field Summary

Fields

Modifier and Type	Field and Description
static java.util.function.Consumer<Throwable>	NOOP_EXCEPTION_HANDLER

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	FlinkUserCodeClassLoader(URL[] urls, ClassLoader parent)
protected	FlinkUserCodeClassLoader(URL[] urls, ClassLoader parent, java.util.function.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 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, 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 java.util.function.Consumer<Throwable> NOOP_EXCEPTION_HANDLER

Constructor Detail

FlinkUserCodeClassLoader

protected FlinkUserCodeClassLoader(URL[] urls,
                                   ClassLoader parent)

FlinkUserCodeClassLoader

protected FlinkUserCodeClassLoader(URL[] urls,
                                   ClassLoader parent,
                                   java.util.function.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