com.exalead.mercury.component.tools

Class ReleasableClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

com.exalead.mercury.component.tools.ReleasableClassLoader

All Implemented Interfaces:

LoggerHolder, LoggerProviderHolder, java.io.Closeable, java.lang.AutoCloseable

public class ReleasableClassLoader
extends java.net.URLClassLoader
implements LoggerHolder, LoggerProviderHolder

Class loader with a release() method. The parent class loader has a lower priority.

Field Summary

Fields

Modifier and Type	Field and Description
protected LoggerHolder	loggerProvider
protected java.lang.ClassLoader	parent
protected boolean	reverseClassLoading

Constructor Summary

Constructors

Constructor and Description
ReleasableClassLoader(java.lang.ClassLoader parent) Build a new class loader.

Method Summary

Modifier and Type	Method and Description
void	addJar(java.io.File file) Add a jar file to the class path.
void	clearLoggerProvider() Clears the logger provider.
protected void	finalize() Default finalizer.
java.util.logging.Logger	getLogger(java.lang.String name) Get the associated logger.
com.exalead.mercury.plugin.CVPlugin	getPlugin() Get the plugin module associated with this class loader.
java.net.URL	getResource(java.lang.String name)
java.util.Enumeration<java.net.URL>	getResources(java.lang.String name)
boolean	isServerClass(java.lang.String className)
boolean	isSystemClass(java.lang.String className)
boolean	isSystemOrServerClass(java.lang.String className)
java.lang.Class<?>	loadClass(java.lang.String name) Load a class.
protected java.lang.Class<?>	loadClass(java.lang.String name, boolean resolve) Load a class.
void	release() Release the class loader, if supported.
void	setLoggerProvider(LoggerHolder provider) Set the logger provider.
void	setName(java.lang.String name)
void	setPlugin(com.exalead.mercury.plugin.CVPlugin plugin) Associate a plugin module associated to this class loader.
void	setReverseClassLoading(boolean value)
java.lang.String	toString()

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, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, registerAsParallelCapable, resolveClass, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

parent

protected final java.lang.ClassLoader parent

loggerProvider

protected LoggerHolder loggerProvider

reverseClassLoading

protected boolean reverseClassLoading

Constructor Detail

ReleasableClassLoader

public ReleasableClassLoader(java.lang.ClassLoader parent)

Build a new class loader.

Parameters:

parent - the parent class loader.

Method Detail

setName

public void setName(java.lang.String name)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

setReverseClassLoading

public void setReverseClassLoading(boolean value)

setPlugin

public void setPlugin(com.exalead.mercury.plugin.CVPlugin plugin)

Associate a plugin module associated to this class loader.

Parameters:

plugin - The plugin module associated to this class loader.

getPlugin

public com.exalead.mercury.plugin.CVPlugin getPlugin()

Get the plugin module associated with this class loader.

Returns:

The plugin module associated to this class loader

addJar

public void addJar(java.io.File file)

Add a jar file to the class path.

loadClass

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

Load a class. This class is overidded to allow an initial search in the current path first (and then in parent)

Overrides:

loadClass in class java.lang.ClassLoader

Throws:

java.lang.ClassNotFoundException

loadClass

public java.lang.Class<?> loadClass(java.lang.String name)
                             throws java.lang.ClassNotFoundException

Load a class. This class is overrided to allow an initial search in the current path first (and then in parent)

Overrides:

loadClass in class java.lang.ClassLoader

Throws:

java.lang.ClassNotFoundException

release

public void release()
             throws java.lang.NoSuchMethodError,
                    java.io.IOException

Release the class loader, if supported.

Throws:

java.lang.NoSuchMethodError - if unsupported.

java.io.IOException

finalize

protected void finalize()

Default finalizer.

Overrides:

finalize in class java.lang.Object

getLogger

public java.util.logging.Logger getLogger(java.lang.String name)

Description copied from interface: LoggerHolder

Get the associated logger.

Specified by:

getLogger in interface LoggerHolder

Parameters:

name - logger name.

Returns:

the logger.

setLoggerProvider

public void setLoggerProvider(LoggerHolder provider)

Description copied from interface: LoggerProviderHolder

Set the logger provider.

Specified by:

setLoggerProvider in interface LoggerProviderHolder

Parameters:

provider - the logger provider.

clearLoggerProvider

public void clearLoggerProvider()

Description copied from interface: LoggerProviderHolder

Clears the logger provider.

Specified by:

clearLoggerProvider in interface LoggerProviderHolder

getResources

public java.util.Enumeration<java.net.URL> getResources(java.lang.String name)
                                                 throws java.io.IOException

Overrides:

getResources in class java.lang.ClassLoader

Throws:

java.io.IOException

getResource

public java.net.URL getResource(java.lang.String name)

Overrides:

getResource in class java.lang.ClassLoader

isSystemClass

public boolean isSystemClass(java.lang.String className)

isServerClass

public boolean isServerClass(java.lang.String className)

isSystemOrServerClass

public boolean isSystemOrServerClass(java.lang.String className)