/**
* Returns the list of platform MXBeans implementing the given {@code mxbeanInterface} in the Java
* virtual machine. The returned list may contain zero, one, or more instances. The number of
* instances in the returned list is defined in the specification of the given management
* interface. The order is undefined and there is no guarantee that the list returned is in the
* same order as previous invocations.
*
* @param mxbeanInterface a management interface for a platform MXBean
* @return the list of platform MXBeans that implement {@code mxbeanInterface}.
* @throws IllegalArgumentException if {@code mxbeanInterface} is not a platform management
* interface.
* @since 1.7
*/
public static <T extends PlatformManagedObject> List<T> getPlatformMXBeans(
Class<T> mxbeanInterface) {
PlatformComponent pc = PlatformComponent.getPlatformComponent(mxbeanInterface);
if (pc == null)
throw new IllegalArgumentException(
mxbeanInterface.getName() + " is not a platform management interface");
return Collections.unmodifiableList(pc.getMXBeans(mxbeanInterface));
}
/**
* Returns the list of the platform MXBean proxies for forwarding the method calls of the {@code
* mxbeanInterface} through the given {@code MBeanServerConnection}. The returned list may contain
* zero, one, or more instances. The number of instances in the returned list is defined in the
* specification of the given management interface. The order is undefined and there is no
* guarantee that the list returned is in the same order as previous invocations.
*
* @param connection the {@code MBeanServerConnection} to forward to.
* @param mxbeanInterface a management interface for a platform MXBean
* @return the list of platform MXBean proxies for forwarding the method calls of the {@code
* mxbeanInterface} through the given {@code MBeanServerConnection}.
* @throws IllegalArgumentException if {@code mxbeanInterface} is not a platform management
* interface.
* @throws java.io.IOException if a communication problem occurred when accessing the {@code
* MBeanServerConnection}.
* @see #newPlatformMXBeanProxy
* @since 1.7
*/
public static <T extends PlatformManagedObject> List<T> getPlatformMXBeans(
MBeanServerConnection connection, Class<T> mxbeanInterface) throws java.io.IOException {
PlatformComponent pc = PlatformComponent.getPlatformComponent(mxbeanInterface);
if (pc == null) {
throw new IllegalArgumentException(
mxbeanInterface.getName() + " is not a platform management interface");
}
return Collections.unmodifiableList(pc.getMXBeans(connection, mxbeanInterface));
}
/**
* Returns the platform MXBean proxy for {@code mxbeanInterface} which is specified to have one
* single instance in a Java virtual machine and the proxy will forward the method calls through
* the given {@code MBeanServerConnection}. This method may return {@code null} if the management
* interface is not implemented in the Java virtual machine being monitored (for example, a Java
* virtual machine with no compilation system does not implement {@link CompilationMXBean});
* otherwise, this method is equivalent to calling:
*
* <pre>
* {@link #getPlatformMXBeans(MBeanServerConnection, Class)
* getPlatformMXBeans(connection, mxbeanInterface)}.get(0);
* </pre>
*
* @param connection the {@code MBeanServerConnection} to forward to.
* @param mxbeanInterface a management interface for a platform MXBean with one single instance in
* the Java virtual machine being monitored, if implemented.
* @return the platform MXBean proxy for forwarding the method calls of the {@code
* mxbeanInterface} through the given {@code MBeanServerConnection}, or {@code null} if not
* exist.
* @throws IllegalArgumentException if {@code mxbeanInterface} is not a platform management
* interface or not a singleton platform MXBean.
* @throws java.io.IOException if a communication problem occurred when accessing the {@code
* MBeanServerConnection}.
* @see #newPlatformMXBeanProxy
* @since 1.7
*/
public static <T extends PlatformManagedObject> T getPlatformMXBean(
MBeanServerConnection connection, Class<T> mxbeanInterface) throws java.io.IOException {
PlatformComponent pc = PlatformComponent.getPlatformComponent(mxbeanInterface);
if (pc == null)
throw new IllegalArgumentException(
mxbeanInterface.getName() + " is not a platform management interface");
if (!pc.isSingleton())
throw new IllegalArgumentException(
mxbeanInterface.getName() + " can have zero or more than one instances");
return pc.getSingletonMXBean(connection, mxbeanInterface);
}