javax.management
public class MBeanServerInvocationHandler extends Object implements InvocationHandler
Provides a proxy for a management bean. The methods of the given interface are fulfilled by redirecting the calls over an MBeanServerConnection to the bean specified by the supplied ObjectName.
The java.lang.reflect.InvocationHandler also makes provision for MXBeans by providing type conversion according to the rules defined for these beans. The input parameters are converted to their equivalent open type before calling the method, and then the return value is converted back from its open type to the appropriate Java type. For example, a method that takes an Enum as input and returns a java.util.List will have the input value converted from an Enum to a String, while the return value will be converted from its return type (an appropriately typed array) to a java.util.List.
The proxy has special cases for the Object#equals(Object), Object#hashCode() and Object#toString() methods. Unless they are specified explictly by the interface, the following behaviour is provided for these methods by the proxy:
equals(Object)
returns true if the other object
is an MBeanServerInvocationHandler with the same
MBeanServerConnection and ObjectName. If an
interface class was specified on construction for one of the
proxies, then the same class must have also been specified
for the other.hashCode()
returns the same value for
equivalent proxies.toString()
returns a textual representation
of the proxy.Since: 1.5
Constructor Summary | |
---|---|
MBeanServerInvocationHandler(MBeanServerConnection conn, ObjectName name)
Constructs a new MBeanServerInvocationHandler
which forwards methods to the supplied bean via the
given MBeanServerConnection. | |
MBeanServerInvocationHandler(MBeanServerConnection conn, ObjectName name, boolean mxBean)
Constructs a new MBeanServerInvocationHandler
which forwards methods to the supplied bean via the
given MBeanServerConnection. |
Method Summary | |
---|---|
MBeanServerConnection | getMBeanServerConnection()
Returns the connection through which the calls to the bean
will be made.
|
ObjectName | getObjectName()
Returns the name of the bean to which method calls are made.
|
Object | invoke(Object proxy, Method method, Object[] args)
Called by the proxy class whenever a method is called. |
boolean | isMXBean()
Returns true if this is a proxy for an MXBean
and conversions must be applied to input parameters
and return types, according to the rules for such beans.
|
(MBeanServerConnection, ObjectName,
Class)
if you wish to make your own call to
java.lang.reflect.Proxy#newInstance(ClassLoader,
Class[], java.lang.reflect.InvocationHandler)
with
a different ClassLoader. Calling this constructor
is equivalent to MBeanServerInvocationHandler(conn,
name, false)
. The other constructor should be used
instead if the bean being proxied is an MXBean.
Parameters: conn the connection through which methods will be forwarded to the bean. name the name of the bean to use to provide the actual calls.
(MBeanServerConnection, ObjectName,
Class)
if you wish to make your own call to
java.lang.reflect.Proxy#newInstance(ClassLoader,
Class[], java.lang.reflect.InvocationHandler)
with
a different ClassLoader.
Parameters: conn the connection through which methods will be forwarded to the bean. name the name of the bean to use to provide the actual calls. mxBean true if the bean being proxied is an MXBean.
Since: 1.6
Returns: the connection being used to forward the calls to the bean.
Since: 1.6
Returns: the bean which provides the actual method calls.
Since: 1.6
Parameters: proxy the proxy on which the method was called. method the method which was called. args the arguments supplied to the method.
Returns: the return value from the method.
Throws: Throwable if an exception is thrown in performing the method emulation.
Returns: true if this is a proxy for an MXBean.
Since: 1.6