/**
* Helios, OpenSource Monitoring
* Brought to you by the Helios Development Group
*
* Copyright 2007, Helios Development Group and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*
*/
package org.helios.gmx.jmx;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import javax.management.Attribute;
import javax.management.AttributeList;
import javax.management.InstanceNotFoundException;
import javax.management.MBeanInfo;
import javax.management.MBeanRegistration;
import javax.management.MBeanServerConnection;
import javax.management.NotificationFilter;
import javax.management.NotificationListener;
import javax.management.ObjectInstance;
import javax.management.ObjectName;
import javax.management.QueryExp;
/**
* <p>Title: RuntimeMBeanServerConnection</p>
* <p>Description: A wrapper around an {@link javax.management.MBeanServerConnection} that converts all checked exceptions to runtime exceptions.</p>
* <p>Company: Helios Development Group LLC</p>
* @author Whitehead (nwhitehead AT heliosdev DOT org)
* <p><code>org.helios.gmx.jmx.RuntimeMBeanServerConnection</code></p>
*/
public class RuntimeMBeanServerConnection implements MBeanServerConnection {
/** The inner MBeanServer delegate */
protected final MBeanServerConnection innerConnection;
/**
* Returns a RuntimeMBeanServerConnection wrapper for the passed inner connection
* @param innerConnection The inner MBeanServer delegate to wrap
* @return a RuntimeMBeanServerConnection wrapper for the passed inner connection
*/
public static RuntimeMBeanServerConnection getInstance(MBeanServerConnection innerConnection) {
return new RuntimeMBeanServerConnection(innerConnection);
}
/**
* Creates a new RuntimeMBeanServerConnection
* @param innerConnection The inner MBeanServer delegate
*/
protected RuntimeMBeanServerConnection(MBeanServerConnection innerConnection) {
this.innerConnection = innerConnection;
}
/**
* <p>Instantiates and registers an MBean in the MBean server. The
* MBean server will use its {@link
* javax.management.loading.ClassLoaderRepository Default Loader
* Repository} to load the class of the MBean. An object name is
* associated to the MBean. If the object name given is null, the
* MBean must provide its own name by implementing the {@link
* javax.management.MBeanRegistration MBeanRegistration} interface
* and returning the name from the {@link
* MBeanRegistration#preRegister preRegister} method.</p>
*
* <p>This method is equivalent to {@link
* #createMBean(String,ObjectName,Object[],String[])
* createMBean(className, name, (Object[]) null, (String[])
* null)}.</p>
*
* @param className The class name of the MBean to be instantiated.
* @param name The object name of the MBean. May be null.
*
* @return An <CODE>ObjectInstance</CODE>, containing the
* <CODE>ObjectName</CODE> and the Java class name of the newly
* instantiated MBean. If the contained <code>ObjectName</code>
* is <code>n</code>, the contained Java class name is
* <code>{@link #getMBeanInfo getMBeanInfo(n)}.getClassName()</code>.
*/
public ObjectInstance createMBean(String className, ObjectName name) {
try {
return innerConnection.createMBean(className, name);
} catch (Exception e) {
throw new RuntimeMBeanServerException("Failed to invoke [createMBean(String className, ObjectName name)]", e);
}
}
/**
* <p>Instantiates and registers an MBean in the MBean server. The
* class loader to be used is identified by its object name. An
* object name is associated to the MBean. If the object name of
* the loader is null, the ClassLoader that loaded the MBean
* server will be used. If the MBean's object name given is null,
* the MBean must provide its own name by implementing the {@link
* javax.management.MBeanRegistration MBeanRegistration} interface
* and returning the name from the {@link
* MBeanRegistration#preRegister preRegister} method.</p>
*
* <p>This method is equivalent to {@link
* #createMBean(String,ObjectName,ObjectName,Object[],String[])
* createMBean(className, name, loaderName, (Object[]) null,
* (String[]) null)}.</p>
*
* @param className The class name of the MBean to be instantiated.
* @param name The object name of the MBean. May be null.
* @param loaderName The object name of the class loader to be used.
*
* @return An <CODE>ObjectInstance</CODE>, containing the
* <CODE>ObjectName</CODE> and the Java class name of the newly
* instantiated MBean. If the contained <code>ObjectName</code>
* is <code>n</code>, the contained Java class name is
* <code>{@link #getMBeanInfo getMBeanInfo(n)}.getClassName()</code>.
*
*/
public ObjectInstance createMBean(String className, ObjectName name, ObjectName loaderName) {
try {
return innerConnection.createMBean(className, name, loaderName);
} catch (Exception e) {
throw new RuntimeMBeanServerException("Failed to invoke [createMBean(String className, ObjectName name, ObjectName loaderName)]", e);
}
}
/**
* Instantiates and registers an MBean in the MBean server. The
* MBean server will use its {@link
* javax.management.loading.ClassLoaderRepository Default Loader
* Repository} to load the class of the MBean. An object name is
* associated to the MBean. If the object name given is null, the
* MBean must provide its own name by implementing the {@link
* javax.management.MBeanRegistration MBeanRegistration} interface
* and returning the name from the {@link
* MBeanRegistration#preRegister preRegister} method.
*
* @param className The class name of the MBean to be instantiated.
* @param name The object name of the MBean. May be null.
* @param params An array containing the parameters of the
* constructor to be invoked.
* @param signature An array containing the signature of the
* constructor to be invoked.
*
* @return An <CODE>ObjectInstance</CODE>, containing the
* <CODE>ObjectName</CODE> and the Java class name of the newly
* instantiated MBean. If the contained <code>ObjectName</code>
* is <code>n</code>, the contained Java class name is
* <code>{@link #getMBeanInfo getMBeanInfo(n)}.getClassName()</code>.
*
*
*/
public ObjectInstance createMBean(String className, ObjectName name, Object params[], String signature[]) {
try {
return innerConnection.createMBean(className, name, params, signature);
} catch (Exception e) {
throw new RuntimeMBeanServerException("Failed to invoke [createMBean(String className, ObjectName name, Object params[], String signature[])]", e);
}
}
/**
* Instantiates and registers an MBean in the MBean server. The
* class loader to be used is identified by its object name. An
* object name is associated to the MBean. If the object name of
* the loader is not specified, the ClassLoader that loaded the
* MBean server will be used. If the MBean object name given is
* null, the MBean must provide its own name by implementing the
* {@link javax.management.MBeanRegistration MBeanRegistration}
* interface and returning the name from the {@link
* MBeanRegistration#preRegister preRegister} method.
*
* @param className The class name of the MBean to be instantiated.
* @param name The object name of the MBean. May be null.
* @param params An array containing the parameters of the
* constructor to be invoked.
* @param signature An array containing the signature of the
* constructor to be invoked.
* @param loaderName The object name of the class loader to be used.
*
* @return An <CODE>ObjectInstance</CODE>, containing the
* <CODE>ObjectName</CODE> and the Java class name of the newly
* instantiated MBean. If the contained <code>ObjectName</code>
* is <code>n</code>, the contained Java class name is
* <code>{@link #getMBeanInfo getMBeanInfo(n)}.getClassName()</code>.
*
*/
public ObjectInstance createMBean(String className, ObjectName name,ObjectName loaderName, Object params[], String signature[]) {
try {
return innerConnection.createMBean(className, name, loaderName, params, signature);
} catch (Exception e) {
throw new RuntimeMBeanServerException("Failed to invoke [createMBean(String className, ObjectName name, ObjectName loaderName, Object params[], String signature[])]", e);
}
}
/**
* Unregisters an MBean from the MBean server. The MBean is
* identified by its object name. Once the method has been
* invoked, the MBean may no longer be accessed by its object
* name.
*
* @param name The object name of the MBean to be unregistered.
*
*/
public void unregisterMBean(ObjectName name) {
try {
innerConnection.unregisterMBean(name);
} catch (Exception e) {
throw new RuntimeMBeanServerException("Failed to invoke [unregisterMBean(ObjectName name)]", e);
}
}
/**
* Gets the <CODE>ObjectInstance</CODE> for a given MBean
* registered with the MBean server.
*
* @param name The object name of the MBean.
*
* @return The <CODE>ObjectInstance</CODE> associated with the MBean
* specified by <VAR>name</VAR>. The contained <code>ObjectName</code>
* is <code>name</code> and the contained class name is
* <code>{@link #getMBeanInfo getMBeanInfo(name)}.getClassName()</code>.
*
*/
public ObjectInstance getObjectInstance(ObjectName name) {
try {
return innerConnection.getObjectInstance(name);
} catch (Exception e) {
throw new RuntimeMBeanServerException("Failed to invoke [getObjectInstance(ObjectName name)]", e);
}
}
/**
* Gets MBeans controlled by the MBean server. This method allows
* any of the following to be obtained: All MBeans, a set of
* MBeans specified by pattern matching on the
* <CODE>ObjectName</CODE> and/or a Query expression, a specific
* MBean. When the object name is null or no domain and key
* properties are specified, all objects are to be selected (and
* filtered if a query is specified). It returns the set of
* <CODE>ObjectInstance</CODE> objects (containing the
* <CODE>ObjectName</CODE> and the Java Class name) for the
* selected MBeans.
*
* @param name The object name pattern identifying the MBeans to
* be retrieved. If null or no domain and key properties are
* specified, all the MBeans registered will be retrieved.
* @param query The query expression to be applied for selecting
* MBeans. If null no query expression will be applied for
* selecting MBeans.
*
* @return A set containing the <CODE>ObjectInstance</CODE>
* objects for the selected MBeans. If no MBean satisfies the
* query an empty list is returned.
*
*/
public Set<ObjectInstance> queryMBeans(ObjectName name, QueryExp query) {
try {
return innerConnection.queryMBeans(name, query);
} catch (Exception e) {
throw new RuntimeMBeanServerException("Failed to invoke [queryMBeans(ObjectName name, QueryExp query)]", e);
}
}
/**
* Gets the names of MBeans controlled by the MBean server. This
* method enables any of the following to be obtained: The names
* of all MBeans, the names of a set of MBeans specified by
* pattern matching on the <CODE>ObjectName</CODE> and/or a Query
* expression, a specific MBean name (equivalent to testing
* whether an MBean is registered). When the object name is null
* or no domain and key properties are specified, all objects are
* selected (and filtered if a query is specified). It returns the
* set of ObjectNames for the MBeans selected.
*
* @param name The object name pattern identifying the MBean names
* to be retrieved. If null or no domain and key properties are
* specified, the name of all registered MBeans will be retrieved.
* @param query The query expression to be applied for selecting
* MBeans. If null no query expression will be applied for
* selecting MBeans.
*
* @return A set containing the ObjectNames for the MBeans
* selected. If no MBean satisfies the query, an empty list is
* returned.
*/
public Set<ObjectName> queryNames(ObjectName name, QueryExp query) {
try {
return innerConnection.queryNames(name, query);
} catch (Exception e) {
throw new RuntimeMBeanServerException("Failed to invoke [queryNames(ObjectName name, QueryExp query)]", e);
}
}
/**
* Checks whether an MBean, identified by its object name, is
* already registered with the MBean server.
*
* @param name The object name of the MBean to be checked.
*
* @return True if the MBean is already registered in the MBean
* server, false otherwise.
*
*/
public boolean isRegistered(ObjectName name) {
try {
return innerConnection.isRegistered(name);
} catch (Exception e) {
throw new RuntimeMBeanServerException("Failed to invoke [isRegistered(ObjectName name)]", e);
}
}
/**
* Returns the number of MBeans registered in the MBean server.
*
* @return the number of MBeans registered.
*/
public Integer getMBeanCount() {
try {
return innerConnection.getMBeanCount();
} catch (Exception e) {
throw new RuntimeMBeanServerException("Failed to invoke [getMBeanCount()]", e);
}
}
/**
* Gets the value of a specific attribute of a named MBean. The MBean
* is identified by its object name.
*
* @param name The object name of the MBean from which the
* attribute is to be retrieved.
* @param attribute A String specifying the name of the attribute
* to be retrieved.
*
* @return The value of the retrieved attribute.
*
* @see #setAttribute
*/
public Object getAttribute(ObjectName name, String attribute) {
try {
return innerConnection.getAttribute(name, attribute);
} catch (Exception e) {
throw new RuntimeMBeanServerException("Failed to invoke [getAttribute(ObjectName name, String attribute)]", e);
}
}
/**
* Gets the value of a specific attribute of a named MBean. The MBean
* is identified by its object name.
*
* @param name The object name of the MBean from which the
* attribute is to be retrieved.
* @param attribute A String specifying the name of the attribute
* to be retrieved.
* @param type The expected type of the return result
*
* @return The value of the retrieved attribute.
*
* @see #setAttribute
* @param <T> The expected type of the return result
*/
public <T> T getAttribute(ObjectName name, String attribute, Class<T> type) {
try {
Object result = innerConnection.getAttribute(name, attribute);
return type.cast(result);
} catch (Exception e) {
throw new RuntimeMBeanServerException("Failed to invoke [getAttribute(ObjectName name, String attribute, Class type)]", e);
}
}
/**
* Enables the values of several attributes of a named MBean. The MBean
* is identified by its object name.
*
* @param name The object name of the MBean from which the
* attributes are retrieved.
* @param attributes A list of the attributes to be retrieved.
*
* @return The list of the retrieved attributes.
*
* @see #setAttributes
*/
public AttributeList getAttributes(ObjectName name, String[] attributes) {
try {
return innerConnection.getAttributes(name, attributes);
} catch (Exception e) {
throw new RuntimeMBeanServerException("Failed to invoke [getAttributes(ObjectName name, String[] attributes)]", e);
}
}
/**
* Sets the value of a specific attribute of a named MBean. The MBean
* is identified by its object name.
*
* @param name The name of the MBean within which the attribute is
* to be set.
* @param attribute The identification of the attribute to be set
* and the value it is to be set to.
*
* @see #getAttribute
*/
public void setAttribute(ObjectName name, Attribute attribute) {
try {
innerConnection.setAttribute(name, attribute);
} catch (Exception e) {
throw new RuntimeMBeanServerException("Failed to invoke [setAttribute(ObjectName name, Attribute attribute)]", e);
}
}
/**
* Sets the values of several attributes of a named MBean. The MBean is
* identified by its object name.
*
* @param name The object name of the MBean within which the
* attributes are to be set.
* @param attributes A list of attributes: The identification of
* the attributes to be set and the values they are to be set to.
*
* @return The list of attributes that were set, with their new
* values.
*
* @see #getAttributes
*/
public AttributeList setAttributes(ObjectName name,AttributeList attributes) {
try {
return innerConnection.setAttributes(name, attributes);
} catch (Exception e) {
throw new RuntimeMBeanServerException("Failed to invoke [setAttributes(ObjectName name,AttributeList attributes)]", e);
}
}
/**
* Invokes an operation on an MBean.
*
* @param name The object name of the MBean on which the method is
* to be invoked.
* @param operationName The name of the operation to be invoked.
* @param params An array containing the parameters to be set when
* the operation is invoked
* @param signature An array containing the signature of the
* operation. The class objects will be loaded using the same
* class loader as the one used for loading the MBean on which the
* operation was invoked.
*
* @return The object returned by the operation, which represents
* the result of invoking the operation on the MBean specified.
*
*/
public Object invoke(ObjectName name, String operationName,Object params[], String signature[]) {
try {
return innerConnection.invoke(name, operationName, params, signature);
} catch (Exception e) {
throw new RuntimeMBeanServerException("Failed to invoke [invoke(ObjectName name, String operationName,Object params[], String signature[])]", e);
}
}
/**
* Invokes an operation on an MBean.
*
* @param type The expected return type of the invocation
* @param name The object name of the MBean on which the method is
* to be invoked.
* @param operationName The name of the operation to be invoked.
* @param params An array containing the parameters to be set when
* the operation is invoked
* @param signature An array containing the signature of the
* operation. The class objects will be loaded using the same
* class loader as the one used for loading the MBean on which the
* operation was invoked.
*
* @return The object returned by the operation, which represents
* the result of invoking the operation on the MBean specified.
*
* @param <T> The expected return type of the invocation
*/
public <T> T invoke(Class<T> type, ObjectName name, String operationName,Object params[], String signature[]) {
try {
Object result = innerConnection.invoke(name, operationName, params, signature);
if(result==null || result instanceof Void ) return null;
return type.cast(result);
} catch (Exception e) {
throw new RuntimeMBeanServerException("Failed to invoke [invoke(Class type, ObjectName name, String operationName,Object params[], String signature[])]", e);
}
}
/**
* Returns the default domain used for naming the MBean.
* The default domain name is used as the domain part in the ObjectName
* of MBeans if no domain is specified by the user.
*
* @return the default domain.
*/
public String getDefaultDomain() {
try {
return innerConnection.getDefaultDomain();
} catch (Exception e) {
throw new RuntimeMBeanServerException("Failed to invoke [getDefaultDomain()]", e);
}
}
/**
* <p>Returns the list of domains in which any MBean is currently
* registered. A string is in the returned array if and only if
* there is at least one MBean registered with an ObjectName whose
* {@link ObjectName#getDomain() getDomain()} is equal to that
* string. The order of strings within the returned array is
* not defined.</p>
*
* @return the list of domains.
*/
public String[] getDomains() {
try {
return innerConnection.getDomains();
} catch (Exception e) {
throw new RuntimeMBeanServerException("Failed to invoke [getDomains()]", e);
}
}
/**
* <p>Adds a listener to a registered MBean.</p>
*
* <P> A notification emitted by an MBean will be forwarded by the
* MBeanServer to the listener. If the source of the notification
* is a reference to an MBean object, the MBean server will replace it
* by that MBean's ObjectName. Otherwise the source is unchanged.
*
* @param name The name of the MBean on which the listener should
* be added.
* @param listener The listener object which will handle the
* notifications emitted by the registered MBean.
* @param filter The filter object. If filter is null, no
* filtering will be performed before handling notifications.
* @param handback The context to be sent to the listener when a
* notification is emitted.
*
* @see #removeNotificationListener(ObjectName, NotificationListener)
* @see #removeNotificationListener(ObjectName, NotificationListener,
* NotificationFilter, Object)
*/
public void addNotificationListener(ObjectName name, NotificationListener listener, NotificationFilter filter, Object handback) {
try {
innerConnection.addNotificationListener(name, listener, filter, handback);
} catch (Exception e) {
throw new RuntimeMBeanServerException("Failed to invoke [addNotificationListener(ObjectName name, NotificationListener listener, NotificationFilter filter, Object handback)]", e);
}
}
/**
* <p>Adds a listener to a registered MBean.</p>
*
* <p>A notification emitted by an MBean will be forwarded by the
* MBeanServer to the listener. If the source of the notification
* is a reference to an MBean object, the MBean server will
* replace it by that MBean's ObjectName. Otherwise the source is
* unchanged.</p>
*
* <p>The listener object that receives notifications is the one
* that is registered with the given name at the time this method
* is called. Even if it is subsequently unregistered, it will
* continue to receive notifications.</p>
*
* @param name The name of the MBean on which the listener should
* be added.
* @param listener The object name of the listener which will
* handle the notifications emitted by the registered MBean.
* @param filter The filter object. If filter is null, no
* filtering will be performed before handling notifications.
* @param handback The context to be sent to the listener when a
* notification is emitted.
*
* @see #removeNotificationListener(ObjectName, ObjectName)
* @see #removeNotificationListener(ObjectName, ObjectName,
* NotificationFilter, Object)
*/
public void addNotificationListener(ObjectName name, ObjectName listener, NotificationFilter filter, Object handback) {
try {
innerConnection.addNotificationListener(name, listener, filter, handback);
} catch (Exception e) {
throw new RuntimeMBeanServerException("Failed to invoke [addNotificationListener(ObjectName name, ObjectName listener, NotificationFilter filter, Object handback)]", e);
}
}
/**
* Removes a listener from a registered MBean.
*
* <P> If the listener is registered more than once, perhaps with
* different filters or callbacks, this method will remove all
* those registrations.
*
* @param name The name of the MBean on which the listener should
* be removed.
* @param listener The object name of the listener to be removed.
*
* @see #addNotificationListener(ObjectName, ObjectName,
* NotificationFilter, Object)
*/
public void removeNotificationListener(ObjectName name, ObjectName listener) {
try {
innerConnection.removeNotificationListener(name, listener);
} catch (Exception e) {
throw new RuntimeMBeanServerException("Failed to invoke [removeNotificationListener(ObjectName name, ObjectName listener)]", e);
}
}
/**
* <p>Removes a listener from a registered MBean.</p>
*
* <p>The MBean must have a listener that exactly matches the
* given <code>listener</code>, <code>filter</code>, and
* <code>handback</code> parameters. If there is more than one
* such listener, only one is removed.</p>
*
* <p>The <code>filter</code> and <code>handback</code> parameters
* may be null if and only if they are null in a listener to be
* removed.</p>
*
* @param name The name of the MBean on which the listener should
* be removed.
* @param listener The object name of the listener to be removed.
* @param filter The filter that was specified when the listener
* was added.
* @param handback The handback that was specified when the
* listener was added.
*
* @see #addNotificationListener(ObjectName, ObjectName,
* NotificationFilter, Object)
*
*/
public void removeNotificationListener(ObjectName name, ObjectName listener, NotificationFilter filter, Object handback) {
try {
innerConnection.removeNotificationListener(name, listener, filter, handback);
} catch (Exception e) {
throw new RuntimeMBeanServerException("Failed to invoke [removeNotificationListener(ObjectName name, ObjectName listener, NotificationFilter filter, Object handback)]", e);
}
}
/**
* <p>Removes a listener from a registered MBean.</p>
*
* <P> If the listener is registered more than once, perhaps with
* different filters or callbacks, this method will remove all
* those registrations.
*
* @param name The name of the MBean on which the listener should
* be removed.
* @param listener The listener to be removed.
*
* @see #addNotificationListener(ObjectName, NotificationListener,
* NotificationFilter, Object)
*/
public void removeNotificationListener(ObjectName name, NotificationListener listener) {
try {
innerConnection.removeNotificationListener(name, listener);
} catch (Exception e) {
throw new RuntimeMBeanServerException("Failed to invoke [removeNotificationListener(ObjectName name, NotificationListener listener)]", e);
}
}
/**
* <p>Removes a listener from a registered MBean.</p>
*
* <p>The MBean must have a listener that exactly matches the
* given <code>listener</code>, <code>filter</code>, and
* <code>handback</code> parameters. If there is more than one
* such listener, only one is removed.</p>
*
* <p>The <code>filter</code> and <code>handback</code> parameters
* may be null if and only if they are null in a listener to be
* removed.</p>
*
* @param name The name of the MBean on which the listener should
* be removed.
* @param listener The listener to be removed.
* @param filter The filter that was specified when the listener
* was added.
* @param handback The handback that was specified when the
* listener was added.
*
* @see #addNotificationListener(ObjectName, NotificationListener,
* NotificationFilter, Object)
*/
public void removeNotificationListener(ObjectName name, NotificationListener listener, NotificationFilter filter, Object handback) {
try {
innerConnection.removeNotificationListener(name, listener, filter, handback);
} catch (Exception e) {
throw new RuntimeMBeanServerException("Failed to invoke [removeNotificationListener(ObjectName name, ObjectName listener, NotificationFilter filter, Object handback)]", e);
}
}
/**
* This method discovers the attributes and operations that an
* MBean exposes for management.
*
* @param name The name of the MBean to analyze
*
* @return An instance of <CODE>MBeanInfo</CODE> allowing the
* retrieval of all attributes and operations of this MBean.
*
*/
public MBeanInfo getMBeanInfo(ObjectName name) {
try {
return innerConnection.getMBeanInfo(name);
} catch (Exception e) {
throw new RuntimeMBeanServerException("Failed to invoke [getMBeanInfo(ObjectName name)]", e);
}
}
/**
* <p>Returns true if the MBean specified is an instance of the
* specified class, false otherwise.</p>
*
* <p>If <code>name</code> does not name an MBean, this method
* throws {@link InstanceNotFoundException}.</p>
*
* <p>Otherwise, let<br>
* X be the MBean named by <code>name</code>,<br>
* L be the ClassLoader of X,<br>
* N be the class name in X's {@link MBeanInfo}.</p>
*
* <p>If N equals <code>className</code>, the result is true.</p>
*
* <p>Otherwise, if L successfully loads <code>className</code>
* and X is an instance of this class, the result is true.
*
* <p>Otherwise, if L successfully loads both N and
* <code>className</code>, and the second class is assignable from
* the first, the result is true.</p>
*
* <p>Otherwise, the result is false.</p>
*
* @param name The <CODE>ObjectName</CODE> of the MBean.
* @param className The name of the class.
*
* @return true if the MBean specified is an instance of the
* specified class according to the rules above, false otherwise.
*
* @see Class#isInstance
*/
public boolean isInstanceOf(ObjectName name, String className) {
try {
return innerConnection.isInstanceOf(name, className);
} catch (Exception e) {
throw new RuntimeMBeanServerException("Failed to invoke [isInstanceOf(ObjectName name, String className)]", e);
}
}
}