Java Doc for ModelMBean.java in  » JMX » jfoxmx » javax » management » modelmbean » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » JMX » jfoxmx » javax.management.modelmbean 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


javax.management.modelmbean.ModelMBean

All known Subclasses:   javax.management.modelmbean.RequiredModelMBean,
ModelMBean
public interface ModelMBean extends DynamicMBean,PersistentMBean,ModelMBeanNotificationBroadcaster(Code)
This interface must be implemented by the ModelMBeans. An implementation of this interface must be shipped with every JMX Agent.

Java resources wishing to be manageable instatiate the ModelMBean using the MBeanServer's createMBean method. The resource then sets the ModelMBeanInfo (with Descriptors) for the ModelMBean instance. The attributes and operations exposed via the ModelMBeanInfo for the ModelMBean are accessible from Mbeans, connectors/adapters like other MBeans. Through the ModelMBeanInfo Descriptors, values and methods in the managed application can be defined and mapped to attributes and operations of the ModelMBean. This mapping can be defined during development in an XML formatted file or dynamically and programmatically at runtime.

Every ModelMBean which is instantiated in the MBeanServer becomes manageable: its attributes and operations become remotely accessible through the connectors/adaptors connected to that MBeanServer. A Java object cannot be registered in the MBeanServer unless it is a JMX compliant MBean. By instantiating a ModelMBean, resources are guaranteed that the MBean is valid.

MBeanException and RuntimeOperatiosException must be thrown on every public method. This allows for wrappering exceptions from distributed communications (RMI, EJB, etc.). These exceptions do not have to be thrown by teh implementation except in the scenarios described in the specification and javadoc.
author:
   Young Yang





Method Summary
public  voidsetManagedResource(Object mr, String mr_type)
     Sets the instance handle of the object against which to execute all methods in this ModelMBean management interface (MBeanInfo and Descriptors)
Parameters:
  mr - Object that is the managed resource
Parameters:
  mr_type - The type of reference for the managed resource.
public  voidsetModelMBeanInfo(ModelMBeanInfo inModelMBeanInfo)
     Initializes a ModelMBean object using ModelMBeanInfo passed in.



Method Detail
setManagedResource
public void setManagedResource(Object mr, String mr_type) throws MBeanException, RuntimeOperationsException, InstanceNotFoundException, InvalidTargetObjectTypeException(Code)
Sets the instance handle of the object against which to execute all methods in this ModelMBean management interface (MBeanInfo and Descriptors)
Parameters:
  mr - Object that is the managed resource
Parameters:
  mr_type - The type of reference for the managed resource. Can be: ObjectReference,Handle, IOR, EJBHandle, RMIReference.If the MBeanServer cannot process the mr_type passed in, an InvalidTargetTypeExceptionwill be thrown.
exception:
  MBeanException - The initializer of the object has thrown an exception.
exception:
  RuntimeOperationsException - Wraps an IllegalArgumentException:The managed resource or managed resoure type passed in parameter is null or invalid.
exception:
  InstanceNotFoundException - The managed resource object could not be found
exception:
  InvalidTargetObjectTypeException - The managed resource type cannot be processed by theModelMBean or JMX Agent.



setModelMBeanInfo
public void setModelMBeanInfo(ModelMBeanInfo inModelMBeanInfo) throws MBeanException, RuntimeOperationsException(Code)
Initializes a ModelMBean object using ModelMBeanInfo passed in. The ModelMBean must be instantiated, but not registered with the MBeanServer. After the ModelMBean's ModelMBeanInfo (with Descriptors) are customized, the ModelMBean should be registered with the MBeanServer.


Parameters:
  inModelMBeanInfo - The ModelMBeanInfo object to be used by the ModelMBean.
exception:
  MBeanException - The constructor of the MBeanInfo has return nullor thrown an exception.
exception:
  RuntimeOperationsException - Wraps an IllegalArgumentException:The MBeanInfo passed in parameter is null or invalid.




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