org.apache.paimon.plugin

类 ComponentClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

org.apache.paimon.plugin.ComponentClassLoader

所有已实现的接口:

Closeable, AutoCloseable

public class ComponentClassLoader
extends URLClassLoader

A URLClassLoader that restricts which classes can be loaded to those contained within the given classpath, except classes from a given set of packages that are either loaded owner or component-first.

Depiction of the class loader hierarchy:

       Owner     Bootstrap
           ^         ^
           |---------|
                |
            Component
 

For loading classes/resources, class loaders are accessed in one of the following orders:

• component-only: component -> bootstrap; default.
• component-first: component -> bootstrap -> owner; opt-in.
• owner-first: owner -> component -> bootstrap; opt-in.

构造器概要

构造器

构造器和说明
ComponentClassLoader(URL[] classpath, ClassLoader ownerClassLoader, String[] ownerFirstPackages, String[] componentFirstPackages)

方法概要

限定符和类型	方法和说明
URL	getResource(String name)
Enumeration<URL>	getResources(String name)
protected Class<?>	loadClass(String name, boolean resolve)

从类继承的方法 java.net.URLClassLoader

addURL, 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

ComponentClassLoader

public ComponentClassLoader(URL[] classpath,
                            ClassLoader ownerClassLoader,
                            String[] ownerFirstPackages,
                            String[] componentFirstPackages)

方法详细资料

loadClass

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

覆盖:

loadClass 在类中 ClassLoader

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