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From d...@apache.org
Subject cvs commit: incubator-geronimo/modules/kernel/src/java/org/apache/geronimo/kernel/jmx InterfaceCallbackFilter.java InvokeMBean.java MBeanOperationSignature.java MBeanProxyCallback.java MBeanProxyFactory.java AbstractMBeanProxyHandler.java
Date Fri, 07 Nov 2003 17:32:11 GMT
dain        2003/11/07 09:32:11

  Modified:    modules/kernel/src/java/org/apache/geronimo/kernel/jmx
                        MBeanProxyFactory.java
  Added:       modules/kernel/src/java/org/apache/geronimo/kernel/jmx
                        InterfaceCallbackFilter.java InvokeMBean.java
                        MBeanOperationSignature.java
                        MBeanProxyCallback.java
  Removed:     modules/kernel/src/java/org/apache/geronimo/kernel/jmx
                        AbstractMBeanProxyHandler.java
  Log:
  Converted to use cglib dynamic proxies.
  
  Revision  Changes    Path
  1.2       +66 -20    incubator-geronimo/modules/kernel/src/java/org/apache/geronimo/kernel/jmx/MBeanProxyFactory.java
  
  Index: MBeanProxyFactory.java
  ===================================================================
  RCS file: /home/cvs/incubator-geronimo/modules/kernel/src/java/org/apache/geronimo/kernel/jmx/MBeanProxyFactory.java,v
  retrieving revision 1.1
  retrieving revision 1.2
  diff -u -r1.1 -r1.2
  --- MBeanProxyFactory.java	8 Sep 2003 04:38:34 -0000	1.1
  +++ MBeanProxyFactory.java	7 Nov 2003 17:32:11 -0000	1.2
  @@ -55,22 +55,28 @@
    */
   package org.apache.geronimo.kernel.jmx;
   
  -import java.lang.reflect.Proxy;
  +import java.lang.reflect.Method;
  +import java.util.HashMap;
  +import java.util.Map;
  +import java.util.Set;
  +import javax.management.MBeanAttributeInfo;
  +import javax.management.MBeanInfo;
  +import javax.management.MBeanOperationInfo;
   import javax.management.MBeanServer;
   import javax.management.ObjectName;
   
  +import net.sf.cglib.proxy.Enhancer;
  +import net.sf.cglib.proxy.Factory;
  +import net.sf.cglib.proxy.SimpleCallbacks;
  +import net.sf.cglib.reflect.FastClass;
  +
   /**
    * MBeanProxyFactory creates a dynamic proxy to an MBean by ObjectName.
  - * The interface type and object existance is not enforced during construction.  Instead,
if a method is
  - * invoked on the proxy and there is no object registered with the assigned name, an InvocationTargetException
  - * is thrown, which contains an InstanceNotFoundException.  If an interface method that
is not implemented by
  - * the MBean is invoked, an InvocationTargetException is thrown, which contains an NoSuchMethodException.
  + * The interface type and object existance are enforced during construction.
    *
    * @version $Revision$ $Date$
    */
   public final class MBeanProxyFactory {
  -    private MBeanProxyFactory() {
  -    }
   
       /**
        * Creates an MBean proxy using the specified interface to the objectName.
  @@ -85,20 +91,60 @@
           assert iface.isInterface();
           assert server != null;
   
  -        ClassLoader cl = iface.getClassLoader();
  -        return Proxy.newProxyInstance(cl, new Class[]{iface}, new LocalHandler(iface, server,
objectName));
  -    }
  -
  -    private static class LocalHandler extends AbstractMBeanProxyHandler {
  -        private ObjectName objectName;
  -
  -        public LocalHandler(Class iface, MBeanServer server, ObjectName objectName) {
  -            super(iface, server);
  -            this.objectName = objectName;
  +        // get the factory
  +        Factory factory = Enhancer.create(
  +                Object.class,
  +                new Class[]{iface},
  +                new InterfaceCallbackFilter(),
  +                new SimpleCallbacks());
  +
  +        // build the method table
  +        FastClass fastClass = FastClass.create(iface);
  +
  +        if (objectName.isPattern()) {
  +            Set names = server.queryNames(objectName, null);
  +            if (names.isEmpty()) {
  +                throw new IllegalArgumentException("No names mbeans registered that match
object name pattern: " + objectName);
  +            }
  +            objectName = (ObjectName) names.iterator().next();
  +        }
  +
  +        MBeanInfo info = null;
  +        try {
  +            info = server.getMBeanInfo(objectName);
  +        } catch (Exception e) {
  +            throw new IllegalArgumentException("Could not get MBeanInfo for target object:
" + objectName);
  +        }
  +
  +        MBeanAttributeInfo[] attributeInfos = info.getAttributes();
  +        Map attributes = new HashMap(attributeInfos.length);
  +        for (int i = 0; i < attributeInfos.length; i++) {
  +            MBeanAttributeInfo attributeInfo = attributeInfos[i];
  +            attributes.put(attributeInfo.getName(), attributeInfo);
  +        }
  +
  +        MBeanOperationInfo[] operationInfos = info.getOperations();
  +        Map operations = new HashMap(operationInfos.length);
  +        for (int i = 0; i < operationInfos.length; i++) {
  +            MBeanOperationInfo operationInfo = operationInfos[i];
  +            operations.put(new MBeanOperationSignature(operationInfo), operationInfo);
           }
   
  -        public ObjectName getObjectName() {
  -            return objectName;
  +        InvokeMBean[] methodTable = new InvokeMBean[fastClass.getMaxIndex() + 1];
  +        Method[] methods = fastClass.getJavaClass().getMethods();
  +        for (int i = 0; i < methods.length; i++) {
  +            Method method = methods[i];
  +            int index = fastClass.getIndex(method.getName(), method.getParameterTypes());
  +            if (operations.containsKey(new MBeanOperationSignature(method))) {
  +                methodTable[index] = new InvokeMBean(method, false, false);
  +            } else if (method.getName().startsWith("get") && attributes.containsKey(method.getName().substring(3)))
{
  +                methodTable[index] = new InvokeMBean(method, true, true);
  +            } else if (method.getName().startsWith("is") && attributes.containsKey(method.getName().substring(2)))
{
  +                methodTable[index] = new InvokeMBean(method, true, true);
  +            } else if (method.getName().startsWith("set") && attributes.containsKey(method.getName().substring(3)))
{
  +                methodTable[index] = new InvokeMBean(method, true, false);
  +            }
           }
  +        return factory.newInstance(new MBeanProxyCallback(methodTable, server, objectName));
       }
   }
  
  
  
  1.1                  incubator-geronimo/modules/kernel/src/java/org/apache/geronimo/kernel/jmx/InterfaceCallbackFilter.java
  
  Index: InterfaceCallbackFilter.java
  ===================================================================
  /* ====================================================================
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 2003 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution,
   *    if any, must include the following acknowledgment:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowledgment may appear in the software itself,
   *    if and wherever such third-party acknowledgments normally appear.
   *
   * 4. The names "Apache" and "Apache Software Foundation" and
   *    "Apache Geronimo" must not be used to endorse or promote products
   *    derived from this software without prior written permission. For
   *    written permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache",
   *    "Apache Geronimo", nor may "Apache" appear in their name, without
   *    prior written permission of the Apache Software Foundation.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   * ====================================================================
   */
  package org.apache.geronimo.kernel.jmx;
  
  import java.lang.reflect.Method;
  
  import net.sf.cglib.proxy.SimpleFilter;
  import net.sf.cglib.proxy.Callbacks;
  
  /**
   *
   *
   * @version $Revision: 1.1 $ $Date: 2003/11/07 17:32:11 $
   */
  public final class InterfaceCallbackFilter extends SimpleFilter {
      public InterfaceCallbackFilter() {
          super(Callbacks.INTERCEPT);
      }
  
      public int accept(Method method) {
          if(method.getDeclaringClass() == Object.class) {
              return Callbacks.NO_OP;
          }
          return Callbacks.INTERCEPT;
      }
  
  }
  
  
  
  1.1                  incubator-geronimo/modules/kernel/src/java/org/apache/geronimo/kernel/jmx/InvokeMBean.java
  
  Index: InvokeMBean.java
  ===================================================================
  /* ====================================================================
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 2003 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution,
   *    if any, must include the following acknowledgment:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowledgment may appear in the software itself,
   *    if and wherever such third-party acknowledgments normally appear.
   *
   * 4. The names "Apache" and "Apache Software Foundation" and
   *    "Apache Geronimo" must not be used to endorse or promote products
   *    derived from this software without prior written permission. For
   *    written permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache",
   *    "Apache Geronimo", nor may "Apache" appear in their name, without
   *    prior written permission of the Apache Software Foundation.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   * ====================================================================
   */
  package org.apache.geronimo.kernel.jmx;
  
  import java.lang.reflect.Method;
  import javax.management.MBeanServer;
  import javax.management.ObjectName;
  import javax.management.MBeanException;
  import javax.management.ReflectionException;
  import javax.management.RuntimeOperationsException;
  import javax.management.RuntimeMBeanException;
  import javax.management.RuntimeErrorException;
  import javax.management.Attribute;
  
  /**
   *
   *
   * @version $Revision: 1.1 $ $Date: 2003/11/07 17:32:11 $
   */
  public final class InvokeMBean {
      private final String name;
      private final String[] argumentTypes;
      private final Class[] declaredExceptions;
      private final boolean isAttribute;
      private final boolean isGetter;
      private final int expectedArguments;
  
      public InvokeMBean(Method method, boolean isAttribute, boolean isGetter) {
          name = method.getName();
          this.isAttribute = isAttribute;
          this.isGetter = isGetter;
          this.expectedArguments = method.getParameterTypes().length;
  
          if (isAttribute) {
              if (isGetter && (method.getReturnType() == Void.TYPE || method.getParameterTypes().length
> 0)) {
                  throw new IllegalArgumentException("Getter attribute must take no parameters
and return a value");
              }
              if (!isGetter && (method.getReturnType() != Void.TYPE || method.getParameterTypes().length
!= 1)) {
                  throw new IllegalArgumentException("Getter attribute must take one parameter
and not return a value");
              }
          }
  
          // conver the parameters to a MBeanServer friendly string array
          Class[] parameters = method.getParameterTypes();
          argumentTypes = new String[parameters.length];
          for (int i = 0; i < parameters.length; i++) {
              argumentTypes[i] = parameters[i].getName();
          }
  
          declaredExceptions = method.getExceptionTypes();
      }
  
      public Object invoke(MBeanServer server, ObjectName objectName, Object[] arguments)
throws Throwable {
          if (arguments.length != expectedArguments) {
              throw new IllegalArgumentException("Wrong number of arguments:" +
                      " expected " + expectedArguments + " but got " + arguments.length);
          }
          try {
              if (isAttribute) {
                  if (isGetter) {
                      return server.getAttribute(objectName, name);
                  } else {
                      server.setAttribute(objectName, new Attribute(name, arguments[0]));
                      return null;
                  }
              } else {
                  return server.invoke(objectName, name, arguments, argumentTypes);
              }
          } catch (Throwable t) {
              Throwable throwable = t;
              while (true) {
                  for (int i = 0; i < declaredExceptions.length; i++) {
                      Class declaredException = declaredExceptions[i];
                      if (declaredException.isInstance(throwable)) {
                          throw throwable;
                      }
                  }
  
                  // Unwrap the exceptions we understand
                  if (throwable instanceof MBeanException) {
                      throwable = (((MBeanException) throwable).getTargetException());
                  } else if (throwable instanceof ReflectionException) {
                      throwable = (((ReflectionException) throwable).getTargetException());
                  } else if (throwable instanceof RuntimeOperationsException) {
                      throwable = (((RuntimeOperationsException) throwable).getTargetException());
                  } else if (throwable instanceof RuntimeMBeanException) {
                      throwable = (((RuntimeMBeanException) throwable).getTargetException());
                  } else if (throwable instanceof RuntimeErrorException) {
                      throwable = (((RuntimeErrorException) throwable).getTargetError());
                  } else {
                      // don't know how to unwrap this, just throw it
                      throw throwable;
                  }
              }
          }
      }
  }
  
  
  
  1.1                  incubator-geronimo/modules/kernel/src/java/org/apache/geronimo/kernel/jmx/MBeanOperationSignature.java
  
  Index: MBeanOperationSignature.java
  ===================================================================
  /* ====================================================================
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 2003 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution,
   *    if any, must include the following acknowledgment:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowledgment may appear in the software itself,
   *    if and wherever such third-party acknowledgments normally appear.
   *
   * 4. The names "Apache" and "Apache Software Foundation" and
   *    "Apache Geronimo" must not be used to endorse or promote products
   *    derived from this software without prior written permission. For
   *    written permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache",
   *    "Apache Geronimo", nor may "Apache" appear in their name, without
   *    prior written permission of the Apache Software Foundation.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   * ====================================================================
   */
  package org.apache.geronimo.kernel.jmx;
  
  import java.lang.reflect.Method;
  import javax.management.MBeanOperationInfo;
  import javax.management.MBeanParameterInfo;
  
  /**
   * This is a key class based on a MBean operation name and parameters.
   *
   * @version $Revision: 1.1 $ $Date: 2003/11/07 17:32:11 $
   */
  public final class MBeanOperationSignature {
      private final static String[] NO_TYPES = new String[0];
      private final String name;
      private final String[] argumentTypes;
  
      public MBeanOperationSignature(Method method) {
          name = method.getName();
          Class[] parameters = method.getParameterTypes();
          argumentTypes = new String[parameters.length];
          for (int i = 0; i < parameters.length; i++) {
              argumentTypes[i] = parameters[i].getName();
          }
      }
  
      public MBeanOperationSignature(MBeanOperationInfo operationInfo) {
          name = operationInfo.getName();
          MBeanParameterInfo[] parameters = operationInfo.getSignature();
          argumentTypes = new String[parameters.length];
          for (int i = 0; i < parameters.length; i++) {
              argumentTypes[i] = parameters[i].getType();
          }
      }
  
      public MBeanOperationSignature(String name, String[] argumentTypes) {
          this.name = name;
          if (argumentTypes != null) {
              this.argumentTypes = argumentTypes;
          } else {
              this.argumentTypes = NO_TYPES;
          }
      }
  
      public boolean equals(Object object) {
          if (!(object instanceof MBeanOperationSignature)) {
              return false;
          }
  
          // match names
          MBeanOperationSignature methodKey = (MBeanOperationSignature) object;
          if (!methodKey.name.equals(name)) {
              return false;
          }
  
          // match arg length
          int length = methodKey.argumentTypes.length;
          if (length != argumentTypes.length) {
              return false;
          }
  
          // match each arg
          for (int i = 0; i < length; i++) {
              if (!methodKey.argumentTypes[i].equals(argumentTypes[i])) {
                  return false;
              }
          }
          return true;
      }
  
      public int hashCode() {
          int result = 17;
          result = 37 * result + name.hashCode();
          for (int i = 0; i < argumentTypes.length; i++) {
              result = 37 * result + argumentTypes[i].hashCode();
          }
          return result;
      }
  
      public String toString() {
          StringBuffer buffer = new StringBuffer(name);
          for (int i = 0; i < argumentTypes.length; i++) {
              buffer.append(argumentTypes[i]);
          }
          return buffer.toString();
      }
  }
  
  
  
  1.1                  incubator-geronimo/modules/kernel/src/java/org/apache/geronimo/kernel/jmx/MBeanProxyCallback.java
  
  Index: MBeanProxyCallback.java
  ===================================================================
  /* ====================================================================
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 2003 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution,
   *    if any, must include the following acknowledgment:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowledgment may appear in the software itself,
   *    if and wherever such third-party acknowledgments normally appear.
   *
   * 4. The names "Apache" and "Apache Software Foundation" and
   *    "Apache Geronimo" must not be used to endorse or promote products
   *    derived from this software without prior written permission. For
   *    written permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache",
   *    "Apache Geronimo", nor may "Apache" appear in their name, without
   *    prior written permission of the Apache Software Foundation.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   * ====================================================================
   */
  package org.apache.geronimo.kernel.jmx;
  
  import java.lang.reflect.Method;
  import javax.management.MBeanServer;
  import javax.management.ObjectName;
  
  import net.sf.cglib.proxy.MethodInterceptor;
  import net.sf.cglib.proxy.MethodProxy;
  
  /**
   * This class handles invocations for MBean proxies.  Normally only the getObjectName method
is necessary.
   *
   * @version $Revision: 1.1 $ $Date: 2003/11/07 17:32:11 $
   */
  public final class MBeanProxyCallback implements MethodInterceptor {
      private final InvokeMBean[] methodTable;
      private final MBeanServer server;
      private final ObjectName objectName;
  
      public MBeanProxyCallback(InvokeMBean[] methodTable, MBeanServer server, ObjectName
objectName) {
          this.methodTable = methodTable;
          this.server = server;
          this.objectName = objectName;
      }
  
      public Object intercept(Object obj, Method method, Object[] args, MethodProxy proxy)
throws Throwable {
          return methodTable[proxy.getIndex()].invoke(server, objectName, args);
      }
  }
  
  
  

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