Examples of javax.management.Descriptor

javax.management.Descriptor
This interface defines behavioral and runtime metadata for ModelMBeans. A descriptor is a set of name-value pairs.
The {@link DescriptorAccess} interface defines how to get and setDescriptors for a ModelMBean's metadata classes.
The implementation must implement the following constructors.
Descriptor() returns an empty descriptor.
Descriptor(Descriptor) returns a copy of the decriptor.
Descriptor(String[], Object[]) a constructor that verifies the field names include a descriptorType and that predefined fields contain valid values.
@see javax.management.DescriptorAccess @see javax.management.modelmbean.ModelMBean @author Adrian Brock. @version $Revision: 1.2 $

               modelMBeanNotifications[i] = new ModelMBeanNotificationInfo((ModelMBeanNotificationInfo)notification);
            else
               modelMBeanNotifications[i] = new ModelMBeanNotificationInfo(notification.getNotifTypes(), notification.getName(), notification.getDescription());
         }
      }
      Descriptor mBeanDescriptor = null;
      try
      {
         mBeanDescriptor = model.getMBeanDescriptor();
      }
      catch (Exception e)

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      else if (type != null)
      {
         Descriptor[] descrs = getDescriptors(type);
         for (int i = 0; i < descrs.length; ++i)
         {
            Descriptor descr = descrs[i];
            if (name.equals(descr.getFieldValue("name")))
            {
               // Found, no need to clone it.
               return descr;
            }
         }
      }
      else
      {
         // will have to check them all
         Descriptor result = findDescriptorByName(modelMBeanAttributes, name);
         if (result != null)
         {
            return result;
         }
         result = findDescriptorByName(modelMBeanConstructors, name);

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      return null;
   }


   private Descriptor addRequiredFields(Descriptor d)
   {
      Descriptor result = (Descriptor)d.clone();
      String[] reqfields = {
         "displayname",
         "persistpolicy",
         "log",
         "export",
         "visibility"
      };
      String[] defvalues = {
         (String)d.getFieldValue("name"),
         "never",
         "F",
         "F",
         "1"
      };
      List fields = Arrays.asList(d.getFieldNames());
      for (int i = 0; i < reqfields.length; i++)
      {
         if (fields.contains(reqfields[i]) == false)
         {
            result.setField(reqfields[i], defvalues[i]);
         }
      }
      return result;
   }

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        // Retrieve the specified ModelMBeanAttributeInfo
        ModelMBeanAttributeInfo mmainfo = info.getAttribute("acceptCount");
        assertNotNull("Found HttpConnector acceptCount info", mmainfo);


        // Get the Descriptor
        Descriptor desc = mmainfo.getDescriptor();
        assertNotNull("Found HttpConnector acceptCount descriptor", desc);


        // Check the configured fields
        checkDescriptor(desc, "field1", "HttpConnector.acceptCount/field1");
        checkDescriptor(desc, "field2", "HttpConnector.acceptCount/field2");

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        // Cast first entry to ModelMBeanConstructorInfo
        ModelMBeanConstructorInfo mmcinfo =
            (ModelMBeanConstructorInfo) mcinfo[0];


        // Get the Descriptor
        Descriptor desc = mmcinfo.getDescriptor();
        assertNotNull("Found HttpConnector constructor descriptor", desc);


        // Check the configured fields
        checkDescriptor(desc, "role", "constructor");
        checkDescriptor(desc, "field1", "HttpConnector.constructor/field1");

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        assertEquals("Correct description",
                     "HTTP/1.1 Connector for Tomcat Standalone",
                     info.getDescription());


        // Get the Descriptor
        Descriptor desc = info.getMBeanDescriptor();
        assertNotNull("Found HttpConnector MBeanDescriptor", desc);


        // Check the configured fields
        checkDescriptor(desc, "field1", "HttpConnector/field1");
        checkDescriptor(desc, "field2", "HttpConnector/field2");

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        // Retrieve the specified ModelMBeanNotificationInfo
        ModelMBeanNotificationInfo mmninfo = info.getNotification("Problem");
        assertNotNull("Found HttpConnector problem info", mmninfo);


        // Get the Descriptor
        Descriptor desc = mmninfo.getDescriptor();
        assertNotNull("Found HttpConnector problem descriptor", desc);


        // Check the configured fields
        checkDescriptor(desc, "field1", "HttpConnector.problem/field1");
        checkDescriptor(desc, "field2", "HttpConnector.problem/field2");

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        // Retrieve the specified ModelMBeanOperationInfo
        ModelMBeanOperationInfo mmoinfo = info.getOperation("initialize");
        assertNotNull("Found HttpConnector initialize info", mmoinfo);


        // Get the Descriptor
        Descriptor desc = mmoinfo.getDescriptor();
        assertNotNull("Found HttpConnector initialize descriptor", desc);


        // Check the configured fields
        checkDescriptor(desc, "field1", "HttpConnector.initialize/field1");
        checkDescriptor(desc, "field2", "HttpConnector.initialize/field2");

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      else
      {
         MBeanAttributeInfo[] ai = m_modelMBeanInfo.getAttributes();
         for (int i = 0; i < ai.length; i++)
         {
            Descriptor d = ((ModelMBeanAttributeInfo)ai[i]).getDescriptor();
            filter.enableAttribute((String)d.getFieldValue("name"));
         }
      }


      getAttributeChangeBroadcaster().addNotificationListener(listener, filter, handback);

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      else
      {
         MBeanAttributeInfo[] ai = m_modelMBeanInfo.getAttributes();
         for (int i = 0; i < ai.length; i++)
         {
            Descriptor d = ((ModelMBeanAttributeInfo)ai[i]).getDescriptor();
            filter.enableAttribute((String)d.getFieldValue("name"));
         }
      }


      getAttributeChangeBroadcaster().removeNotificationListener(listener, filter, handback);

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