org.apache.flink.core.classloading

Class SubmoduleClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

org.apache.flink.core.classloading.ComponentClassLoader

org.apache.flink.core.classloading.SubmoduleClassLoader

All Implemented Interfaces:

Closeable, AutoCloseable

public class SubmoduleClassLoader
extends ComponentClassLoader

Loads all classes from the submodule jar, except for explicitly white-listed packages.

To ensure that classes from the submodule are always loaded through the submodule classloader (and thus from the submodule jar), even if the classes are also on the classpath (e.g., during tests), all classes from the "org.apache.flink" package are loaded child-first.

Classes related to logging (e.g., log4j) are loaded parent-first.

All other classes can only be loaded if they are either available in the submodule jar or the bootstrap/app classloader (i.e., provided by the JDK).

Constructor Summary

Constructors

Constructor and Description
SubmoduleClassLoader(URL[] classpath, ClassLoader parentClassLoader)

Method Summary

Methods inherited from class org.apache.flink.core.classloading.ComponentClassLoader

getResource, getResourceAsStream, getResources, loadClass

Methods inherited from class java.net.URLClassLoader

addURL, close, definePackage, findClass, findResource, findResources, getPermissions, 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, 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

Constructor Detail

SubmoduleClassLoader

public SubmoduleClassLoader(URL[] classpath,
                            ClassLoader parentClassLoader)