jdk-sandbox: comparison jdk/src/share/classes/javax/management/modelmbean/RequiredModelMBean.java

equal deleted inserted replaced

-:5484c7a35278
+:dc74d4ddc28e
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */
 /*
-* @author    IBM Corp.
+* @(#)author    IBM Corp.
 *
 * Copyright IBM Corp. 1999-2000.  All rights reserved.
 */
 import javax.management.AttributeChangeNotification;
 import javax.management.AttributeChangeNotificationFilter;
 import javax.management.AttributeList;
 import javax.management.AttributeNotFoundException;
 import javax.management.Descriptor;
+import javax.management.DynamicWrapperMBean;
 import javax.management.InstanceNotFoundException;
 import javax.management.InvalidAttributeValueException;
 import javax.management.ListenerNotFoundException;
 import javax.management.MBeanAttributeInfo;
 import javax.management.MBeanConstructorInfo;
 *
 * @since 1.5
 */
 public class RequiredModelMBean
-implements ModelMBean, MBeanRegistration, NotificationEmitter {
+implements ModelMBean, MBeanRegistration, NotificationEmitter, DynamicWrapperMBean {
 /*************************************/
 /* attributes                        */
 /*************************************/
 ModelMBeanInfo modelMBeanInfo;
 private NotificationBroadcasterSupport attributeBroadcaster = null;
 /* handle, name, or reference for instance on which the actual invoke
 * and operations will be executed */
 private Object managedResource = null;
+/* true if getWrappedObject returns the wrapped resource */
+private boolean visible;
 /* records the registering in MBeanServer */
 private boolean registered = false;
 private transient MBeanServer server = null;
 * execute all methods in this ModelMBean management interface
 * (MBeanInfo and Descriptors).
 *
 * @param mr Object that is the managed resource
 * @param mr_type The type of reference for the managed resource.
-*     <br>Can be: "ObjectReference", "Handle", "IOR", "EJBHandle",
+*     <br>Can be: "ObjectReference", "VisibleObjectReference",
-*         or "RMIReference".
+*         "Handle", "IOR", "EJBHandle", or "RMIReference".
-*     <br>In this implementation only "ObjectReference" is supported.
+*     <br>In this implementation only "ObjectReference" and
+*         "VisibleObjectReference" are supported.  The two
+*         types are equivalent except for the behavior of the
+*         {@link #getWrappedObject()} and {@link #getWrappedClassLoader()}
+*         methods.
 *
 * @exception MBeanException The initializer of the object has
 *            thrown an exception.
 * @exception InstanceNotFoundException The managed resource
 *            object could not be found
 MODELMBEAN_LOGGER.logp(Level.FINER,
 RequiredModelMBean.class.getName(),
 "setManagedResource(Object,String)","Entry");
 }
+visible = "visibleObjectReference".equalsIgnoreCase(mr_type);
 // check that the mr_type is supported by this JMXAgent
 // only "objectReference" is supported
-if ((mr_type == null) ||
+if (!"objectReference".equalsIgnoreCase(mr_type) && !visible) {
-(! mr_type.equalsIgnoreCase("objectReference"))) {
 if (MODELMBEAN_LOGGER.isLoggable(Level.FINER)) {
 MODELMBEAN_LOGGER.logp(Level.FINER,
 RequiredModelMBean.class.getName(),
 "setManagedResource(Object,String)",
 "Managed Resouce Type is not supported: " + mr_type);
 if (MODELMBEAN_LOGGER.isLoggable(Level.FINER)) {
 MODELMBEAN_LOGGER.logp(Level.FINER,
 RequiredModelMBean.class.getName(),
 "setManagedResource(Object, String)", "Exit");
 }
+}
+/**
+* <p>Get the managed resource for this Model MBean. For compatibility
+* reasons, the managed resource is only returned if the resource type
+* specified to {@link #setManagedResource setManagedResource} was {@code
+* "visibleObjectReference"}. Otherwise, {@code this} is returned.</p>
+*
+* @return The value that was specified to {@link #setManagedResource
+* setManagedResource}, if the resource type is {@code
+* "visibleObjectReference"}. Otherwise, {@code this}.
+*/
+public Object getWrappedObject() {
+if (visible)
+return managedResource;
+else
+return this;
+}
+/**
+* <p>Get the ClassLoader of the managed resource for this Model MBean. For
+* compatibility reasons, the ClassLoader of the managed resource is only
+* returned if the resource type specified to {@link #setManagedResource
+* setManagedResource} was {@code "visibleObjectReference"}. Otherwise,
+* {@code this.getClass().getClassLoader()} is returned.</p>
+*
+* @return The ClassLoader of the value that was specified to
+* {@link #setManagedResource setManagedResource}, if the resource
+* type is {@code "visibleObjectReference"}. Otherwise, {@code
+* this.getClass().getClassLoader()}.
+*/
+public ClassLoader getWrappedClassLoader() {
+return getWrappedObject().getClass().getClassLoader();
+}
+private static boolean isTrue(Descriptor d, String field) {
+if (d == null)
+return false;
+Object x = d.getFieldValue(field);
+if (x instanceof Boolean)
+return (Boolean) x;
+if (!(x instanceof String))
+return false;
+String s = (String) x;
+return ("true".equalsIgnoreCase(s) || "T".equalsIgnoreCase(s));
 }
 /**
 * <p>Instantiates this MBean instance with the data found for
 * the MBean in the persistent store.  The data loaded could include

changeset 834	dc74d4ddc28e
parent 715	f16baef3a20e
parent 833	bfa2bef7517c
child 1004	5ba8217eb504