Change Notes item #561710, was opened at 2002-05-29 01:21 You can respond by visiting: http://sourceforge.net/tracker/?func=detail&atid=381174&aid=561710&group_id=22866
Category: JBossMX Group: None Status: Open Priority: 5 Submitted By: Juha Lindfors (juhalindfors) Assigned to: Juha Lindfors (juhalindfors) Summary: XMBean supports Descriptor resource type Initial Comment: XMBean Model MBean implementation now supports DESCRIPTOR (value defined in XMBeanConstants) as its resource type. Using a descriptor allows property map to be supplied to the Model MBean instance describing how to initialize and configure the Model MBean instance to represent the managed resource. You can use either one of the two constructors: XMBean(Object resource, String type) XMBean(Descriptor) The former requires an instance of javax.management.Descriptor supplied as resource object and XMBeanConstants.DESCRIPTOR supplied as type. The descriptor MUST contain at least two fields: RESOURCE_REFERENCE and RESOURCE_TYPE. Former must have the reference to the actual resource object as its value, and the latter must include the actual type of the resource object. The XMBean implementation will extract this information and use it to register the Model MBean. For instance: Descriptor d = new DescriptorSupport(); d.setField(RESOURCE_REFERENCE, new SomeObject()); d.setField(RESOURCE_TYPE, "http://URL/intrface.xml";); ModelMBean mmb = new XMBean(d); server.registerMBean(name, mmb); to set up a resource object whose management interface is generated from the given XML document instance. Descriptors allow client more control on how the Model MBean is configured. For instance, to disable the validation of the XML document instance the client can provide the following descriptor: Descriptor d = new DescriptorSupport(); d.setField(RESOURCE_REFERENCE, new Object()); d.setField(RESOURCE_TYPE, "http://URL/intrface.xml";); d.setField(XML_VALIDATION, "true"); ModelMBean mmb = new XMBean(d); server.registerMBean(name, mmb); The descriptor fields define a naming pattern scheme similar to JMX notifications: a dot separated identity string. These are defined as part XMBEAN_DESCRIPTOR_PREFIX, RESOURCE_DESCRIPTOR_PREFIX and METADATA_DESCRIPTOR_PREFIX. For instance, all fields matching the METADATA_DESCRIPTOR_PREFIX will be automatically delegated by the XMBean implementation to all MetaDataBuilder implementations via the setProperty() method. This allows the client to configure and extend custom builder implementations. Descriptors will later be used to setup ModelMBean instances mapping to multiple resource objects. ---------------------------------------------------------------------- You can respond by visiting: http://sourceforge.net/tracker/?func=detail&atid=381174&aid=561710&group_id=22866 _______________________________________________________________ Don't miss the 2002 Sprint PCS Application Developer's Conference August 25-28 in Las Vegas -- http://devcon.sprintpcs.com/adp/index.cfm _______________________________________________ Jboss-development mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-development
