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/*
* MBeanServerConnectionMethods.java
* $Id: MBeanServerConnectionMethods.java,v 1.4 2007/05/05 05:36:24 tcfujii Exp $
* $Revision: 1.4 $
* $Date: 2007/05/05 05:36:24 $
* Indentation Information:
* 0. Please (try to) preserve these settings.
* 1. Tabs are preferred over spaces.
* 2. In vi/vim -
* :set tabstop=4 :set shiftwidth=4 :set softtabstop=4
* 3. In S1 Studio -
* 1. Tools->Options->Editor Settings->Java Editor->Tab Size = 4
* 2. Tools->Options->Indentation Engines->Java Indentation Engine->Expand Tabs to Spaces = False.
* 3. Tools->Options->Indentation Engines->Java Indentation Engine->Number of Spaces per Tab = 4.
* Unit Testing Information:
* 0. Is Standard Unit Test Written (y/n):
* 1. Unit Test Location: (The instructions should be in the Unit Test Class itself).
*/
package com.sun.enterprise.admin.jmx.remote.internal;
import java.lang.reflect.Method;
import javax.management.MBeanServerConnection;
import javax.management.ObjectName;
import javax.management.NotificationFilter;
import javax.management.NotificationListener;
import javax.management.remote.message.MBeanServerRequestMessage;
/** A class that links the class {@link MBeanServerRequestMessage} and interface {@link MBeanServerConnection}.
* The former of the two contains integers that has ids of the methods in the latter.
* Instead of designing an enum kind of construct I chose to take the reflection-oriented
* path because I did not want to worry about the internationalization etc. The cost
* is one-time and is bourne at the time of loading this class. The class is loaded
* as late as possible. Note that this class depends on the constant value fields from
* {@link MBeanServerRequestMessage}
* @author mailto:Kedar.Mhaswade@Sun.Com
* @since Sun Java System Application Server 8
*/
class MBeanServerConnectionMethods {
private static String[] names = new String[0];
static {
initializeMethods();
}
private MBeanServerConnectionMethods() {
//disallow
}
private static void initializeMethods() {
try {
final Method[] methods = javax.management.MBeanServerConnection.class.getDeclaredMethods();
names = new String[methods.length];
for (int i = 0 ; i < methods.length ; i++) {
indexMethod(methods[i]);
}
}
catch(final Exception e) {
throw new RuntimeException (e);
}
}
private static void indexMethod(final Method am) {
final String m = am.getName();
if ("getAttribute".equals(m))
names[MBeanServerRequestMessage.GET_ATTRIBUTE] = am.toString();
else if ("getAttributes".equals(m))
names[MBeanServerRequestMessage.GET_ATTRIBUTES] = am.toString();
else if ("getDefaultDomain".equals(m))
names[MBeanServerRequestMessage.GET_DEFAULT_DOMAIN] = am.toString();
else if ("getDomains".equals(m))
names[MBeanServerRequestMessage.GET_DOMAINS] = am.toString();
else if ("getMBeanCount".equals(m))
names[MBeanServerRequestMessage.GET_MBEAN_COUNT] = am.toString();
else if ("getMBeanInfo".equals(m))
names[MBeanServerRequestMessage.GET_MBEAN_INFO] = am.toString();
else if ("getObjectInstance".equals(m))
names[MBeanServerRequestMessage.GET_OBJECT_INSTANCE] = am.toString();
else if ("invoke".equals(m))
names[MBeanServerRequestMessage.INVOKE] = am.toString();
else if ("isInstanceOf".equals(m))
names[MBeanServerRequestMessage.IS_INSTANCE_OF] = am.toString();
else if ("isRegistered".equals(m))
names[MBeanServerRequestMessage.IS_REGISTERED] = am.toString();
else if ("queryMBeans".equals(m))
names[MBeanServerRequestMessage.QUERY_MBEANS] = am.toString();
else if ("queryNames".equals(m))
names[MBeanServerRequestMessage.QUERY_NAMES] = am.toString();
else if ("setAttribute".equals(m))
names[MBeanServerRequestMessage.SET_ATTRIBUTE] = am.toString();
else if ("setAttributes".equals(m))
names[MBeanServerRequestMessage.SET_ATTRIBUTES] = am.toString();
else if ("unregisterMBean".equals(m))
names[MBeanServerRequestMessage.UNREGISTER_MBEAN] = am.toString();
else if ("addNotificationListener".equals(m))
indexAddNotificationListenerMethod(am);
else if ("createMBean".equals(m))
indexCreateMBeanMethod(am);
else if ("removeNotificationListener".equals(m))
indexRemoveNotificationListenerMethod(am);
}
private static void indexAddNotificationListenerMethod(final Method m) {
final Class[] params = m.getParameterTypes(); //this is ordered list, has to have 4 elements.
//indexing on the second parameter - it can either be ObjectName or NotificationListener
if (params[1].getName().indexOf("ObjectName") != -1)
names[MBeanServerRequestMessage.ADD_NOTIFICATION_LISTENER_OBJECTNAME] = m.toString();
else {
assert (params[1].getName().indexOf("NotificationListener")) != -1;
names[MBeanServerRequestMessage.ADD_NOTIFICATION_LISTENERS] = m.toString();
}
}
private static void indexCreateMBeanMethod(final Method m) {
final Class[] params = m.getParameterTypes(); //this is ordered list, has to have 2, 3, 4 or 5 elements.
final int n = params.length;
if (n == 2)
names[MBeanServerRequestMessage.CREATE_MBEAN] = m.toString();
else if (n == 3)
names[MBeanServerRequestMessage.CREATE_MBEAN_LOADER] = m.toString();
else if (n == 4)
names[MBeanServerRequestMessage.CREATE_MBEAN_PARAMS] = m.toString();
else //has to be 5
names[MBeanServerRequestMessage.CREATE_MBEAN_LOADER_PARAMS] = m.toString();
}
private static void indexRemoveNotificationListenerMethod(final Method m) {
final Class[] params = m.getParameterTypes(); //this is ordered list, has to have 2, or 4 elements.
final int n = params.length;
if (n == 2) {
if (params[1].getName().indexOf("ObjectName") != -1)
names[MBeanServerRequestMessage.REMOVE_NOTIFICATION_LISTENER_OBJECTNAME] = m.toString();
else
names[MBeanServerRequestMessage.REMOVE_NOTIFICATION_LISTENER] = m.toString();
}
else {// has to be 4
if (params[1].getName().indexOf("ObjectName") != -1)
names[MBeanServerRequestMessage.REMOVE_NOTIFICATION_LISTENER_OBJECTNAME_FILTER_HANDBACK] = m.toString();
else
names[MBeanServerRequestMessage.REMOVE_NOTIFICATION_LISTENER_FILTER_HANDBACK] = m.toString();
}
}
String getName(final int id) {
return ( names[id] );
}
}
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