org.norther.tammi.core.base
Interface LoaderMBean

All Superinterfaces:

ReferableMBean

All Known Implementing Classes:

Loader

public interface LoaderMBean
extends ReferableMBean

An interface to class loader MBeans supporting loading of assembled classes dynamically.

Author:

Ilkka Priha

Field Summary

Fields inherited from interface org.norther.tammi.core.base.ReferableMBean

DEFAULT_ID, ID, MBEAN, MBEAN_DESCRIPTION, TYPE

Method Summary

void	addURL(URL url) Adds a new URL to search paths.
Class	defineClass(String name, org.objectweb.asm.ClassWriter cw) Defines an assembled class.
Class	defineSubclass(String name, Class clazz) Defines a subclass for a class with all super constructors.
Class	defineSubclass(String name, Class clazz, short access) Defines a subclass for a class with all super constructors but modified access flags.
URL	getResource(String name) Gets a resource with the specified name by going through the class loader hierarchy.
InputStream	getResourceAsStream(String name) Gets an input stream for reading the specified resource.
Enumeration	getResources(String name) Gets all resources with the given name by going through the class loader hierarchy.
URL[]	getURLs() Gets the array of URL search paths.
boolean	isClassDefined(String name) Checks whether the named class is defined.
Class	loadClass(String name) Loads the class with the specified name.

Methods inherited from interface org.norther.tammi.core.base.ReferableMBean

getMBean

Method Detail

getResource

URL getResource(String name)

Gets a resource with the specified name by going through the class loader hierarchy.

Parameters:

name - the resource name.

Returns:

a URL for reading the resource, or null if not found.

getResourceAsStream

InputStream getResourceAsStream(String name)

Gets an input stream for reading the specified resource.

Parameters:

name - the resource name.

Returns:

an input stream, or null if not found.

getResources

Enumeration getResources(String name)
                         throws IOException

Gets all resources with the given name by going through the class loader hierarchy.

Parameters:

name - the resource name.

Returns:

an enumeration of URLs to resources.

Throws:

IOException - for I/O errors.

isClassDefined

boolean isClassDefined(String name)

Checks whether the named class is defined.

Parameters:

name - the name of the class.

Returns:

true if defined, false otherwise.

loadClass

Class loadClass(String name)
                throws ClassNotFoundException

Loads the class with the specified name.

Parameters:

name - the name of the class.

Returns:

the loaded class.

Throws:

ClassNotFoundException - if not found.

defineClass

Class defineClass(String name,
                  org.objectweb.asm.ClassWriter cw)
                  throws ClassFormatError

Defines an assembled class.

Parameters:

name - the name of the class.

cw - the class writer.

Returns:

the defined class.

Throws:

ClassFormatError - if the definition is invalid.

defineSubclass

Class defineSubclass(String name,
                     Class clazz)
                     throws ClassFormatError

Defines a subclass for a class with all super constructors.

Parameters:

name - the name of the class.

clazz - the superclass.

Returns:

the defined class.

Throws:

ClassFormatError - if the definition is invalid.

defineSubclass

Class defineSubclass(String name,
                     Class clazz,
                     short access)
                     throws ClassFormatError

Defines a subclass for a class with all super constructors but modified access flags.

Parameters:

name - the name of the class.

clazz - the superclass.

access - access flags.

Returns:

the defined class.

Throws:

ClassFormatError - if the definition is invalid.

getURLs

URL[] getURLs()

Gets the array of URL search paths.

Returns:

an array of URLs.

addURL

void addURL(URL url)

Adds a new URL to search paths.

Parameters:

url - the new URL.