public interface

MLetMBean

javax.management.loading.MLetMBean
Known Indirect Subclasses

Class Overview

Exposes the remote management interface of the MLet MBean.

Summary

Public Methods
abstract void addURL(URL url)
Appends the specified URL to the list of URLs to search for classes and resources.
abstract void addURL(String url)
Appends the specified URL to the list of URLs to search for classes and resources.
abstract String getLibraryDirectory()
Gets the current directory used by the library loader for storing native libraries before they are loaded into memory.
abstract Set<Object> getMBeansFromURL(String url)
Loads a text file containing MLET tags that define the MBeans to be added to the MBean server.
abstract Set<Object> getMBeansFromURL(URL url)
Loads a text file containing MLET tags that define the MBeans to be added to the MBean server.
abstract URL getResource(String name)
Finds the resource with the given name.
abstract InputStream getResourceAsStream(String name)
Returns an input stream for reading the specified resource.
abstract Enumeration<URL> getResources(String name)
Finds all the resources with the given name.
abstract URL[] getURLs()
Returns the search path of URLs for loading classes and resources.
abstract void setLibraryDirectory(String libdir)
Sets the directory used by the library loader for storing native libraries before they are loaded into memory.

Public Methods

public abstract void addURL (URL url)

Appends the specified URL to the list of URLs to search for classes and resources.

Parameters
url the URL to add.

public abstract void addURL (String url)

Appends the specified URL to the list of URLs to search for classes and resources.

Parameters
url the URL to add.
Throws
ServiceNotFoundException The specified URL is malformed.

public abstract String getLibraryDirectory ()

Gets the current directory used by the library loader for storing native libraries before they are loaded into memory.

Returns
  • The current directory used by the library loader.
Throws
UnsupportedOperationException if this implementation does not support storing native libraries in this way.
See Also

public abstract Set<Object> getMBeansFromURL (String url)

Loads a text file containing MLET tags that define the MBeans to be added to the MBean server. The location of the text file is specified by a URL. The text file is read using the UTF-8 encoding. The MBeans specified in the MLET file will be instantiated and registered in the MBean server.

Parameters
url The URL of the text file to be loaded as String object.
Returns
  • A set containing one entry per MLET tag in the m-let text file loaded. Each entry specifies either the ObjectInstance for the created MBean, or a throwable object (that is, an error or an exception) if the MBean could not be created.
Throws
ServiceNotFoundException One of the following errors has occurred: The m-let text file does not contain an MLET tag, the m-let text file is not found, a mandatory attribute of the MLET tag is not specified, the value of url is malformed.

public abstract Set<Object> getMBeansFromURL (URL url)

Loads a text file containing MLET tags that define the MBeans to be added to the MBean server. The location of the text file is specified by a URL. The text file is read using the UTF-8 encoding. The MBeans specified in the MLET file will be instantiated and registered in the MBean server.

Parameters
url The URL of the text file to be loaded as URL object.
Returns
  • A set containing one entry per MLET tag in the m-let text file loaded. Each entry specifies either the ObjectInstance for the created MBean, or a throwable object (that is, an error or an exception) if the MBean could not be created.
Throws
ServiceNotFoundException One of the following errors has occurred: The m-let text file does not contain an MLET tag, the m-let text file is not found, a mandatory attribute of the MLET tag is not specified, the value of url is null.

public abstract URL getResource (String name)

Finds the resource with the given name. A resource is some data (images, audio, text, etc) that can be accessed by class code in a way that is independent of the location of the code. The name of a resource is a "/"-separated path name that identifies the resource.

Parameters
name The resource name
Returns
  • An URL for reading the resource, or null if the resource could not be found or the caller doesn't have adequate privileges to get the resource.

public abstract InputStream getResourceAsStream (String name)

Returns an input stream for reading the specified resource. The search order is described in the documentation for getResource(String).

Parameters
name The resource name
Returns
  • An input stream for reading the resource, or null if the resource could not be found

public abstract Enumeration<URL> getResources (String name)

Finds all the resources with the given name. A resource is some data (images, audio, text, etc) that can be accessed by class code in a way that is independent of the location of the code. The name of a resource is a "/"-separated path name that identifies the resource.

Parameters
name The resource name.
Returns
  • An enumeration of URL to the resource. If no resources could be found, the enumeration will be empty. Resources that cannot be accessed will not be in the enumeration.
Throws
IOException if an I/O exception occurs when searching for resources.

public abstract URL[] getURLs ()

Returns the search path of URLs for loading classes and resources. This includes the original list of URLs specified to the constructor, along with any URLs subsequently appended by the addURL() method.

Returns
  • the list of URLs.

public abstract void setLibraryDirectory (String libdir)

Sets the directory used by the library loader for storing native libraries before they are loaded into memory.

Parameters
libdir The directory used by the library loader.
Throws
UnsupportedOperationException if this implementation does not support storing native libraries in this way.
See Also