javax.management.NotificationBroadcaster Java Examples

The following examples show how to use javax.management.NotificationBroadcaster. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: StandardMBeanIntrospector.java    From hottub with GNU General Public License v2.0 6 votes vote down vote up 
static boolean isDefinitelyImmutableInfo(Class<?> implClass) {
    if (!NotificationBroadcaster.class.isAssignableFrom(implClass))
        return true;
    synchronized (definitelyImmutable) {
        Boolean immutable = definitelyImmutable.get(implClass);
        if (immutable == null) {
            final Class<NotificationBroadcasterSupport> nbs =
                    NotificationBroadcasterSupport.class;
            if (nbs.isAssignableFrom(implClass)) {
                try {
                    Method m = implClass.getMethod("getNotificationInfo");
                    immutable = (m.getDeclaringClass() == nbs);
                } catch (Exception e) {
                    // Too bad, we'll say no for now.
                    return false;
                }
            } else
                immutable = false;
            definitelyImmutable.put(implClass, immutable);
        }
        return immutable;
    }
}
Example #2
Source File: MBeanIntrospector.java    From hottub with GNU General Public License v2.0 6 votes vote down vote up 
static MBeanNotificationInfo[] findNotifications(Object moi) {
    if (!(moi instanceof NotificationBroadcaster))
        return null;
    MBeanNotificationInfo[] mbn =
            ((NotificationBroadcaster) moi).getNotificationInfo();
    if (mbn == null)
        return null;
    MBeanNotificationInfo[] result =
            new MBeanNotificationInfo[mbn.length];
    for (int i = 0; i < mbn.length; i++) {
        MBeanNotificationInfo ni = mbn[i];
        if (ni.getClass() != MBeanNotificationInfo.class)
            ni = (MBeanNotificationInfo) ni.clone();
        result[i] = ni;
    }
    return result;
}
Example #3
Source File: DefaultMBeanServerInterceptor.java    From openjdk-8-source with GNU General Public License v2.0 6 votes vote down vote up 
private static <T extends NotificationBroadcaster>
        T getNotificationBroadcaster(ObjectName name, Object instance,
                                     Class<T> reqClass) {
    if (reqClass.isInstance(instance))
        return reqClass.cast(instance);
    if (instance instanceof DynamicMBean2)
        instance = ((DynamicMBean2) instance).getResource();
    if (reqClass.isInstance(instance))
        return reqClass.cast(instance);
    final RuntimeException exc =
        new IllegalArgumentException(name.getCanonicalName());
    final String msg =
        "MBean " + name.getCanonicalName() + " does not " +
        "implement " + reqClass.getName();
    throw new RuntimeOperationsException(exc, msg);
}
Example #4
Source File: MBeanIntrospector.java    From jdk8u_jdk with GNU General Public License v2.0 6 votes vote down vote up 
static MBeanNotificationInfo[] findNotifications(Object moi) {
    if (!(moi instanceof NotificationBroadcaster))
        return null;
    MBeanNotificationInfo[] mbn =
            ((NotificationBroadcaster) moi).getNotificationInfo();
    if (mbn == null)
        return null;
    MBeanNotificationInfo[] result =
            new MBeanNotificationInfo[mbn.length];
    for (int i = 0; i < mbn.length; i++) {
        MBeanNotificationInfo ni = mbn[i];
        if (ni.getClass() != MBeanNotificationInfo.class)
            ni = (MBeanNotificationInfo) ni.clone();
        result[i] = ni;
    }
    return result;
}
Example #5
Source File: MBeanIntrospector.java    From openjdk-8-source with GNU General Public License v2.0 6 votes vote down vote up 
static MBeanNotificationInfo[] findNotifications(Object moi) {
    if (!(moi instanceof NotificationBroadcaster))
        return null;
    MBeanNotificationInfo[] mbn =
            ((NotificationBroadcaster) moi).getNotificationInfo();
    if (mbn == null)
        return null;
    MBeanNotificationInfo[] result =
            new MBeanNotificationInfo[mbn.length];
    for (int i = 0; i < mbn.length; i++) {
        MBeanNotificationInfo ni = mbn[i];
        if (ni.getClass() != MBeanNotificationInfo.class)
            ni = (MBeanNotificationInfo) ni.clone();
        result[i] = ni;
    }
    return result;
}
Example #6
Source File: StandardMBeanIntrospector.java    From dragonwell8_jdk with GNU General Public License v2.0 6 votes vote down vote up 
static boolean isDefinitelyImmutableInfo(Class<?> implClass) {
    if (!NotificationBroadcaster.class.isAssignableFrom(implClass))
        return true;
    synchronized (definitelyImmutable) {
        Boolean immutable = definitelyImmutable.get(implClass);
        if (immutable == null) {
            final Class<NotificationBroadcasterSupport> nbs =
                    NotificationBroadcasterSupport.class;
            if (nbs.isAssignableFrom(implClass)) {
                try {
                    Method m = implClass.getMethod("getNotificationInfo");
                    immutable = (m.getDeclaringClass() == nbs);
                } catch (Exception e) {
                    // Too bad, we'll say no for now.
                    return false;
                }
            } else
                immutable = false;
            definitelyImmutable.put(implClass, immutable);
        }
        return immutable;
    }
}
Example #7
Source File: DefaultMBeanServerInterceptor.java    From dragonwell8_jdk with GNU General Public License v2.0 6 votes vote down vote up 
private static <T extends NotificationBroadcaster>
        T getNotificationBroadcaster(ObjectName name, Object instance,
                                     Class<T> reqClass) {
    if (reqClass.isInstance(instance))
        return reqClass.cast(instance);
    if (instance instanceof DynamicMBean2)
        instance = ((DynamicMBean2) instance).getResource();
    if (reqClass.isInstance(instance))
        return reqClass.cast(instance);
    final RuntimeException exc =
        new IllegalArgumentException(name.getCanonicalName());
    final String msg =
        "MBean " + name.getCanonicalName() + " does not " +
        "implement " + reqClass.getName();
    throw new RuntimeOperationsException(exc, msg);
}
Example #8
Source File: DefaultMBeanServerInterceptor.java    From openjdk-jdk9 with GNU General Public License v2.0 6 votes vote down vote up 
private static <T extends NotificationBroadcaster>
        T getNotificationBroadcaster(ObjectName name, Object instance,
                                     Class<T> reqClass) {
    if (reqClass.isInstance(instance))
        return reqClass.cast(instance);
    if (instance instanceof DynamicMBean2)
        instance = ((DynamicMBean2) instance).getResource();
    if (reqClass.isInstance(instance))
        return reqClass.cast(instance);
    final RuntimeException exc =
        new IllegalArgumentException(name.getCanonicalName());
    final String msg =
        "MBean " + name.getCanonicalName() + " does not " +
        "implement " + reqClass.getName();
    throw new RuntimeOperationsException(exc, msg);
}
Example #9
Source File: DefaultMBeanServerInterceptor.java    From jdk8u_jdk with GNU General Public License v2.0 6 votes vote down vote up 
private static <T extends NotificationBroadcaster>
        T getNotificationBroadcaster(ObjectName name, Object instance,
                                     Class<T> reqClass) {
    if (reqClass.isInstance(instance))
        return reqClass.cast(instance);
    if (instance instanceof DynamicMBean2)
        instance = ((DynamicMBean2) instance).getResource();
    if (reqClass.isInstance(instance))
        return reqClass.cast(instance);
    final RuntimeException exc =
        new IllegalArgumentException(name.getCanonicalName());
    final String msg =
        "MBean " + name.getCanonicalName() + " does not " +
        "implement " + reqClass.getName();
    throw new RuntimeOperationsException(exc, msg);
}
Example #10
Source File: StandardMBeanIntrospector.java    From jdk1.8-source-analysis with Apache License 2.0 6 votes vote down vote up 
static boolean isDefinitelyImmutableInfo(Class<?> implClass) {
    if (!NotificationBroadcaster.class.isAssignableFrom(implClass))
        return true;
    synchronized (definitelyImmutable) {
        Boolean immutable = definitelyImmutable.get(implClass);
        if (immutable == null) {
            final Class<NotificationBroadcasterSupport> nbs =
                    NotificationBroadcasterSupport.class;
            if (nbs.isAssignableFrom(implClass)) {
                try {
                    Method m = implClass.getMethod("getNotificationInfo");
                    immutable = (m.getDeclaringClass() == nbs);
                } catch (Exception e) {
                    // Too bad, we'll say no for now.
                    return false;
                }
            } else
                immutable = false;
            definitelyImmutable.put(implClass, immutable);
        }
        return immutable;
    }
}
Example #11
Source File: DefaultMBeanServerInterceptor.java    From jdk1.8-source-analysis with Apache License 2.0 6 votes vote down vote up 
private static <T extends NotificationBroadcaster>
        T getNotificationBroadcaster(ObjectName name, Object instance,
                                     Class<T> reqClass) {
    if (reqClass.isInstance(instance))
        return reqClass.cast(instance);
    if (instance instanceof DynamicMBean2)
        instance = ((DynamicMBean2) instance).getResource();
    if (reqClass.isInstance(instance))
        return reqClass.cast(instance);
    final RuntimeException exc =
        new IllegalArgumentException(name.getCanonicalName());
    final String msg =
        "MBean " + name.getCanonicalName() + " does not " +
        "implement " + reqClass.getName();
    throw new RuntimeOperationsException(exc, msg);
}
Example #12
Source File: StandardMBeanIntrospector.java    From openjdk-jdk9 with GNU General Public License v2.0 6 votes vote down vote up 
static boolean isDefinitelyImmutableInfo(Class<?> implClass) {
    if (!NotificationBroadcaster.class.isAssignableFrom(implClass))
        return true;
    synchronized (definitelyImmutable) {
        Boolean immutable = definitelyImmutable.get(implClass);
        if (immutable == null) {
            final Class<NotificationBroadcasterSupport> nbs =
                    NotificationBroadcasterSupport.class;
            if (nbs.isAssignableFrom(implClass)) {
                try {
                    Method m = implClass.getMethod("getNotificationInfo");
                    immutable = (m.getDeclaringClass() == nbs);
                } catch (Exception e) {
                    // Too bad, we'll say no for now.
                    return false;
                }
            } else
                immutable = false;
            definitelyImmutable.put(implClass, immutable);
        }
        return immutable;
    }
}
Example #13
Source File: StandardMBeanIntrospector.java    From openjdk-8-source with GNU General Public License v2.0 6 votes vote down vote up 
static boolean isDefinitelyImmutableInfo(Class<?> implClass) {
    if (!NotificationBroadcaster.class.isAssignableFrom(implClass))
        return true;
    synchronized (definitelyImmutable) {
        Boolean immutable = definitelyImmutable.get(implClass);
        if (immutable == null) {
            final Class<NotificationBroadcasterSupport> nbs =
                    NotificationBroadcasterSupport.class;
            if (nbs.isAssignableFrom(implClass)) {
                try {
                    Method m = implClass.getMethod("getNotificationInfo");
                    immutable = (m.getDeclaringClass() == nbs);
                } catch (Exception e) {
                    // Too bad, we'll say no for now.
                    return false;
                }
            } else
                immutable = false;
            definitelyImmutable.put(implClass, immutable);
        }
        return immutable;
    }
}
Example #14
Source File: StandardMBeanIntrospector.java    From jdk8u_jdk with GNU General Public License v2.0 6 votes vote down vote up 
static boolean isDefinitelyImmutableInfo(Class<?> implClass) {
    if (!NotificationBroadcaster.class.isAssignableFrom(implClass))
        return true;
    synchronized (definitelyImmutable) {
        Boolean immutable = definitelyImmutable.get(implClass);
        if (immutable == null) {
            final Class<NotificationBroadcasterSupport> nbs =
                    NotificationBroadcasterSupport.class;
            if (nbs.isAssignableFrom(implClass)) {
                try {
                    Method m = implClass.getMethod("getNotificationInfo");
                    immutable = (m.getDeclaringClass() == nbs);
                } catch (Exception e) {
                    // Too bad, we'll say no for now.
                    return false;
                }
            } else
                immutable = false;
            definitelyImmutable.put(implClass, immutable);
        }
        return immutable;
    }
}
Example #15
Source File: MBeanIntrospector.java    From jdk8u60 with GNU General Public License v2.0 6 votes vote down vote up 
static MBeanNotificationInfo[] findNotifications(Object moi) {
    if (!(moi instanceof NotificationBroadcaster))
        return null;
    MBeanNotificationInfo[] mbn =
            ((NotificationBroadcaster) moi).getNotificationInfo();
    if (mbn == null)
        return null;
    MBeanNotificationInfo[] result =
            new MBeanNotificationInfo[mbn.length];
    for (int i = 0; i < mbn.length; i++) {
        MBeanNotificationInfo ni = mbn[i];
        if (ni.getClass() != MBeanNotificationInfo.class)
            ni = (MBeanNotificationInfo) ni.clone();
        result[i] = ni;
    }
    return result;
}
Example #16
Source File: DefaultMBeanServerInterceptor.java    From jdk8u60 with GNU General Public License v2.0 6 votes vote down vote up 
private static <T extends NotificationBroadcaster>
        T getNotificationBroadcaster(ObjectName name, Object instance,
                                     Class<T> reqClass) {
    if (reqClass.isInstance(instance))
        return reqClass.cast(instance);
    if (instance instanceof DynamicMBean2)
        instance = ((DynamicMBean2) instance).getResource();
    if (reqClass.isInstance(instance))
        return reqClass.cast(instance);
    final RuntimeException exc =
        new IllegalArgumentException(name.getCanonicalName());
    final String msg =
        "MBean " + name.getCanonicalName() + " does not " +
        "implement " + reqClass.getName();
    throw new RuntimeOperationsException(exc, msg);
}
Example #17
Source File: DefaultMBeanServerInterceptor.java    From hottub with GNU General Public License v2.0 6 votes vote down vote up 
private static <T extends NotificationBroadcaster>
        T getNotificationBroadcaster(ObjectName name, Object instance,
                                     Class<T> reqClass) {
    if (reqClass.isInstance(instance))
        return reqClass.cast(instance);
    if (instance instanceof DynamicMBean2)
        instance = ((DynamicMBean2) instance).getResource();
    if (reqClass.isInstance(instance))
        return reqClass.cast(instance);
    final RuntimeException exc =
        new IllegalArgumentException(name.getCanonicalName());
    final String msg =
        "MBean " + name.getCanonicalName() + " does not " +
        "implement " + reqClass.getName();
    throw new RuntimeOperationsException(exc, msg);
}
Example #18
Source File: MBeanIntrospector.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 6 votes vote down vote up 
static MBeanNotificationInfo[] findNotifications(Object moi) {
    if (!(moi instanceof NotificationBroadcaster))
        return null;
    MBeanNotificationInfo[] mbn =
            ((NotificationBroadcaster) moi).getNotificationInfo();
    if (mbn == null)
        return null;
    MBeanNotificationInfo[] result =
            new MBeanNotificationInfo[mbn.length];
    for (int i = 0; i < mbn.length; i++) {
        MBeanNotificationInfo ni = mbn[i];
        if (ni.getClass() != MBeanNotificationInfo.class)
            ni = (MBeanNotificationInfo) ni.clone();
        result[i] = ni;
    }
    return result;
}
Example #19
Source File: DefaultMBeanServerInterceptor.java    From JDKSourceCode1.8 with MIT License 6 votes vote down vote up 
private static <T extends NotificationBroadcaster>
        T getNotificationBroadcaster(ObjectName name, Object instance,
                                     Class<T> reqClass) {
    if (reqClass.isInstance(instance))
        return reqClass.cast(instance);
    if (instance instanceof DynamicMBean2)
        instance = ((DynamicMBean2) instance).getResource();
    if (reqClass.isInstance(instance))
        return reqClass.cast(instance);
    final RuntimeException exc =
        new IllegalArgumentException(name.getCanonicalName());
    final String msg =
        "MBean " + name.getCanonicalName() + " does not " +
        "implement " + reqClass.getName();
    throw new RuntimeOperationsException(exc, msg);
}
Example #20
Source File: StandardMBeanIntrospector.java    From JDKSourceCode1.8 with MIT License 6 votes vote down vote up 
static boolean isDefinitelyImmutableInfo(Class<?> implClass) {
    if (!NotificationBroadcaster.class.isAssignableFrom(implClass))
        return true;
    synchronized (definitelyImmutable) {
        Boolean immutable = definitelyImmutable.get(implClass);
        if (immutable == null) {
            final Class<NotificationBroadcasterSupport> nbs =
                    NotificationBroadcasterSupport.class;
            if (nbs.isAssignableFrom(implClass)) {
                try {
                    Method m = implClass.getMethod("getNotificationInfo");
                    immutable = (m.getDeclaringClass() == nbs);
                } catch (Exception e) {
                    // Too bad, we'll say no for now.
                    return false;
                }
            } else
                immutable = false;
            definitelyImmutable.put(implClass, immutable);
        }
        return immutable;
    }
}
Example #21
Source File: MBeanIntrospector.java    From JDKSourceCode1.8 with MIT License 6 votes vote down vote up 
static MBeanNotificationInfo[] findNotifications(Object moi) {
    if (!(moi instanceof NotificationBroadcaster))
        return null;
    MBeanNotificationInfo[] mbn =
            ((NotificationBroadcaster) moi).getNotificationInfo();
    if (mbn == null)
        return null;
    MBeanNotificationInfo[] result =
            new MBeanNotificationInfo[mbn.length];
    for (int i = 0; i < mbn.length; i++) {
        MBeanNotificationInfo ni = mbn[i];
        if (ni.getClass() != MBeanNotificationInfo.class)
            ni = (MBeanNotificationInfo) ni.clone();
        result[i] = ni;
    }
    return result;
}
Example #22
Source File: DefaultMBeanServerInterceptor.java    From jdk8u-jdk with GNU General Public License v2.0 6 votes vote down vote up 
private static <T extends NotificationBroadcaster>
        T getNotificationBroadcaster(ObjectName name, Object instance,
                                     Class<T> reqClass) {
    if (reqClass.isInstance(instance))
        return reqClass.cast(instance);
    if (instance instanceof DynamicMBean2)
        instance = ((DynamicMBean2) instance).getResource();
    if (reqClass.isInstance(instance))
        return reqClass.cast(instance);
    final RuntimeException exc =
        new IllegalArgumentException(name.getCanonicalName());
    final String msg =
        "MBean " + name.getCanonicalName() + " does not " +
        "implement " + reqClass.getName();
    throw new RuntimeOperationsException(exc, msg);
}
Example #23
Source File: StandardMBeanIntrospector.java    From openjdk-8 with GNU General Public License v2.0 6 votes vote down vote up 
static boolean isDefinitelyImmutableInfo(Class<?> implClass) {
    if (!NotificationBroadcaster.class.isAssignableFrom(implClass))
        return true;
    synchronized (definitelyImmutable) {
        Boolean immutable = definitelyImmutable.get(implClass);
        if (immutable == null) {
            final Class<NotificationBroadcasterSupport> nbs =
                    NotificationBroadcasterSupport.class;
            if (nbs.isAssignableFrom(implClass)) {
                try {
                    Method m = implClass.getMethod("getNotificationInfo");
                    immutable = (m.getDeclaringClass() == nbs);
                } catch (Exception e) {
                    // Too bad, we'll say no for now.
                    return false;
                }
            } else
                immutable = false;
            definitelyImmutable.put(implClass, immutable);
        }
        return immutable;
    }
}
Example #24
Source File: DefaultMBeanServerInterceptor.java    From openjdk-jdk8u with GNU General Public License v2.0 6 votes vote down vote up 
private static <T extends NotificationBroadcaster>
        T getNotificationBroadcaster(ObjectName name, Object instance,
                                     Class<T> reqClass) {
    if (reqClass.isInstance(instance))
        return reqClass.cast(instance);
    if (instance instanceof DynamicMBean2)
        instance = ((DynamicMBean2) instance).getResource();
    if (reqClass.isInstance(instance))
        return reqClass.cast(instance);
    final RuntimeException exc =
        new IllegalArgumentException(name.getCanonicalName());
    final String msg =
        "MBean " + name.getCanonicalName() + " does not " +
        "implement " + reqClass.getName();
    throw new RuntimeOperationsException(exc, msg);
}
Example #25
Source File: StandardMBeanIntrospector.java    From openjdk-jdk8u with GNU General Public License v2.0 6 votes vote down vote up 
static boolean isDefinitelyImmutableInfo(Class<?> implClass) {
    if (!NotificationBroadcaster.class.isAssignableFrom(implClass))
        return true;
    synchronized (definitelyImmutable) {
        Boolean immutable = definitelyImmutable.get(implClass);
        if (immutable == null) {
            final Class<NotificationBroadcasterSupport> nbs =
                    NotificationBroadcasterSupport.class;
            if (nbs.isAssignableFrom(implClass)) {
                try {
                    Method m = implClass.getMethod("getNotificationInfo");
                    immutable = (m.getDeclaringClass() == nbs);
                } catch (Exception e) {
                    // Too bad, we'll say no for now.
                    return false;
                }
            } else
                immutable = false;
            definitelyImmutable.put(implClass, immutable);
        }
        return immutable;
    }
}
Example #26
Source File: MBeanIntrospector.java    From openjdk-jdk8u with GNU General Public License v2.0 6 votes vote down vote up 
static MBeanNotificationInfo[] findNotifications(Object moi) {
    if (!(moi instanceof NotificationBroadcaster))
        return null;
    MBeanNotificationInfo[] mbn =
            ((NotificationBroadcaster) moi).getNotificationInfo();
    if (mbn == null)
        return null;
    MBeanNotificationInfo[] result =
            new MBeanNotificationInfo[mbn.length];
    for (int i = 0; i < mbn.length; i++) {
        MBeanNotificationInfo ni = mbn[i];
        if (ni.getClass() != MBeanNotificationInfo.class)
            ni = (MBeanNotificationInfo) ni.clone();
        result[i] = ni;
    }
    return result;
}
Example #27
Source File: DefaultMBeanServerInterceptor.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 6 votes vote down vote up 
private static <T extends NotificationBroadcaster>
        T getNotificationBroadcaster(ObjectName name, Object instance,
                                     Class<T> reqClass) {
    if (reqClass.isInstance(instance))
        return reqClass.cast(instance);
    if (instance instanceof DynamicMBean2)
        instance = ((DynamicMBean2) instance).getResource();
    if (reqClass.isInstance(instance))
        return reqClass.cast(instance);
    final RuntimeException exc =
        new IllegalArgumentException(name.getCanonicalName());
    final String msg =
        "MBean " + name.getCanonicalName() + " does not " +
        "implement " + reqClass.getName();
    throw new RuntimeOperationsException(exc, msg);
}
Example #28
Source File: MBeanIntrospector.java    From jdk8u-jdk with GNU General Public License v2.0 6 votes vote down vote up 
static MBeanNotificationInfo[] findNotifications(Object moi) {
    if (!(moi instanceof NotificationBroadcaster))
        return null;
    MBeanNotificationInfo[] mbn =
            ((NotificationBroadcaster) moi).getNotificationInfo();
    if (mbn == null)
        return null;
    MBeanNotificationInfo[] result =
            new MBeanNotificationInfo[mbn.length];
    for (int i = 0; i < mbn.length; i++) {
        MBeanNotificationInfo ni = mbn[i];
        if (ni.getClass() != MBeanNotificationInfo.class)
            ni = (MBeanNotificationInfo) ni.clone();
        result[i] = ni;
    }
    return result;
}
Example #29
Source File: StandardMBeanIntrospector.java    From jdk8u-jdk with GNU General Public License v2.0 6 votes vote down vote up 
static boolean isDefinitelyImmutableInfo(Class<?> implClass) {
    if (!NotificationBroadcaster.class.isAssignableFrom(implClass))
        return true;
    synchronized (definitelyImmutable) {
        Boolean immutable = definitelyImmutable.get(implClass);
        if (immutable == null) {
            final Class<NotificationBroadcasterSupport> nbs =
                    NotificationBroadcasterSupport.class;
            if (nbs.isAssignableFrom(implClass)) {
                try {
                    Method m = implClass.getMethod("getNotificationInfo");
                    immutable = (m.getDeclaringClass() == nbs);
                } catch (Exception e) {
                    // Too bad, we'll say no for now.
                    return false;
                }
            } else
                immutable = false;
            definitelyImmutable.put(implClass, immutable);
        }
        return immutable;
    }
}
Example #30
Source File: DefaultMBeanServerInterceptor.java    From openjdk-8 with GNU General Public License v2.0 6 votes vote down vote up 
private static <T extends NotificationBroadcaster>
        T getNotificationBroadcaster(ObjectName name, Object instance,
                                     Class<T> reqClass) {
    if (reqClass.isInstance(instance))
        return reqClass.cast(instance);
    if (instance instanceof DynamicMBean2)
        instance = ((DynamicMBean2) instance).getResource();
    if (reqClass.isInstance(instance))
        return reqClass.cast(instance);
    final RuntimeException exc =
        new IllegalArgumentException(name.getCanonicalName());
    final String msg =
        "MBean " + name.getCanonicalName() + " does not " +
        "implement " + reqClass.getName();
    throw new RuntimeOperationsException(exc, msg);
}