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 $


        // Create and return a new information object
        info = new ModelMBeanAttributeInfo
            (getName(), getType(), getDescription(),
             isReadable(), isWriteable(), false);
        Descriptor descriptor = info.getDescriptor();
        if (getDisplayName() != null)
            descriptor.setField("displayName", getDisplayName());
        if (isReadable()) {
            if (getGetMethod() != null)
                descriptor.setField("getMethod", getGetMethod());
            else
                descriptor.setField("getMethod",
                                    getMethodName(getName(), true, isIs()));
        }
        if (isWriteable()) {
            if (getSetMethod() != null)
                descriptor.setField("setMethod", getSetMethod());
            else
                descriptor.setField("setMethod",
                                    getMethodName(getName(), false, false));
        }
        addFields(descriptor);
        info.setDescriptor(descriptor);
        return (info);

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        if( m==null ) {
            // Look up the actual operation to be used
            ModelMBeanAttributeInfo attrInfo = info.getAttribute(name);
            if (attrInfo == null)
                throw new AttributeNotFoundException(" Cannot find attribute " + name);
            Descriptor attrDesc = attrInfo.getDescriptor();
            if (attrDesc == null)
                throw new AttributeNotFoundException("Cannot find attribute " + name + " descriptor");
            String getMethod = (String) attrDesc.getFieldValue("getMethod");


            if (getMethod == null)
                throw new AttributeNotFoundException("Cannot find attribute " + name + " get method name");


            Object object = null;

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        ModelMBeanAttributeInfo attrInfo=info.getAttribute(name);
        if (attrInfo == null)
            throw new AttributeNotFoundException("Cannot find attribute " + name);


        Descriptor attrDesc=attrInfo.getDescriptor();
        if (attrDesc == null)
            throw new AttributeNotFoundException("Cannot find attribute " + name + " descriptor");


        Object oldValue=null;
        if( getAttMap.get(name) != null )
            oldValue=getAttribute( name );




        // Extract the method from cache
        Method m=(Method)setAttMap.get( name );


        if( m==null ) {
            // Look up the actual operation to be used
            String setMethod = (String) attrDesc.getFieldValue("setMethod");
            if (setMethod == null)
                throw new AttributeNotFoundException("Cannot find attribute " + name + " set method name");


            String argType=attrInfo.getType();

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        MBeanNotificationInfo current[] = info.getNotifications();
        if (current == null)
            current = new MBeanNotificationInfo[0];
        MBeanNotificationInfo response[] =
            new MBeanNotificationInfo[current.length + 2];
        Descriptor descriptor = null;


        // Fill in entry for general notifications
        descriptor = new DescriptorSupport
            (new String[] { "name=GENERIC",
                            "descriptorType=notification",

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            return (info);


        // Create and return a new information object
        info = new ModelMBeanNotificationInfo
            (getNotifTypes(), getName(), getDescription());
        Descriptor descriptor = info.getDescriptor();
        addFields(descriptor);
        info.setDescriptor(descriptor);
        return (info);


    }

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            new MBeanParameterInfo[params.length];
        for (int i = 0; i < params.length; i++)
            parameters[i] = params[i].createParameterInfo();
        info = new ModelMBeanConstructorInfo
            (getName(), getDescription(), parameters);
        Descriptor descriptor = info.getDescriptor();
        descriptor.removeField("class");
        if (getDisplayName() != null)
            descriptor.setField("displayName", getDisplayName());
        addFields(descriptor);
        info.setDescriptor(descriptor);
        return (info);


    }

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        // Create and return a new information object
        info = new ModelMBeanAttributeInfo
            (getName(), getType(), getDescription(),
             isReadable(), isWriteable(), false);
        Descriptor descriptor = info.getDescriptor();
        if (getDisplayName() != null)
            descriptor.setField("displayName", getDisplayName());
        if (isReadable()) {
            if (getGetMethod() != null)
                descriptor.setField("getMethod", getGetMethod());
            else
                descriptor.setField("getMethod",
                                    getMethodName(getName(), true, isIs()));
        }
        if (isWriteable()) {
            if (getSetMethod() != null)
                descriptor.setField("setMethod", getSetMethod());
            else
                descriptor.setField("setMethod",
                                    getMethodName(getName(), false, false));
        }
        addFields(descriptor);
        info.setDescriptor(descriptor);
        return (info);

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        // Construct and return a new ModelMBeanInfo object
        info = new ModelMBeanInfoSupport
            (getClassName(), getDescription(),
             attributes, constructors, operations, notifications);
        try {
            Descriptor descriptor = info.getMBeanDescriptor();
            Iterator fields = getFields().iterator();
            while (fields.hasNext()) {
                FieldInfo field = (FieldInfo) fields.next();
                descriptor.setField(field.getName(), field.getValue());
            }
            info.setMBeanDescriptor(descriptor);
        } catch (MBeanException e) {
            ;
        }

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            impact = ModelMBeanOperationInfo.INFO;


        info = new ModelMBeanOperationInfo
            (getName(), getDescription(), parameters,
             getReturnType(), impact);
        Descriptor descriptor = info.getDescriptor();
        descriptor.removeField("class");
        descriptor.setField("role", getRole());
        addFields(descriptor);
        info.setDescriptor(descriptor);
        return (info);


    }

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        for (ManagedAttributeInfo info : attributes.values()) {
            ModelMBeanAttributeInfo mbeanAttribute = new ModelMBeanAttributeInfo(info.getKey(), info.getDescription(), info.getGetter(), info.getSetter());


            // add missing attribute descriptors, this is needed to have attributes accessible
            Descriptor desc = mbeanAttribute.getDescriptor();
            if (info.getGetter() != null) {
                desc.setField("getMethod", info.getGetter().getName());
                // attribute must also be added as mbean operation
                ModelMBeanOperationInfo mbeanOperation = new ModelMBeanOperationInfo(info.getKey(), info.getGetter());
                mBeanOperations.add(mbeanOperation);
            }
            if (info.getSetter() != null) {
                desc.setField("setMethod", info.getSetter().getName());
                // attribute must also be added as mbean operation
                ModelMBeanOperationInfo mbeanOperation = new ModelMBeanOperationInfo(info.getKey(), info.getSetter());
                mBeanOperations.add(mbeanOperation);
            }
            mbeanAttribute.setDescriptor(desc);

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