org.apache.hadoop.hbase.util

类 ClassLoaderBase

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

org.apache.hadoop.hbase.util.ClassLoaderBase

所有已实现的接口:

Closeable, AutoCloseable

直接已知子类:

CoprocessorClassLoader, DynamicClassLoader

@InterfaceAudience.Private
public class ClassLoaderBase
extends URLClassLoader

Base class loader that defines couple shared constants used by sub-classes. It also defined method getClassLoadingLock for parallel class loading and JDK 1.6 support. This method (getClassLoadingLock) is similar to the same method in the base class Java ClassLoader introduced in JDK 1.7, but not in JDK 1.6.

字段概要

字段

限定符和类型	字段和说明
protected static String	DEFAULT_LOCAL_DIR
protected static String	LOCAL_DIR_KEY
protected ClassLoader	parent Parent class loader.

构造器概要

构造器

构造器和说明
ClassLoaderBase(ClassLoader parent) Creates a DynamicClassLoader that can load classes dynamically from jar files under a specific folder.

方法概要

方法

限定符和类型	方法和说明
protected Object	getClassLoadingLock(String className) Returns the lock object for class loading operations.

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, getPackage, getPackages, getParent, getResource, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, 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

字段详细资料

DEFAULT_LOCAL_DIR

protected static final String DEFAULT_LOCAL_DIR

另请参阅:

常量字段值

LOCAL_DIR_KEY

protected static final String LOCAL_DIR_KEY

另请参阅:

常量字段值

parent

protected final ClassLoader parent

Parent class loader.

构造器详细资料

ClassLoaderBase

public ClassLoaderBase(ClassLoader parent)

Creates a DynamicClassLoader that can load classes dynamically from jar files under a specific folder.

参数:

parent - the parent ClassLoader to set.

方法详细资料

getClassLoadingLock

protected Object getClassLoadingLock(String className)

Returns the lock object for class loading operations.

覆盖:

getClassLoadingLock 在类中 ClassLoader