-7445681389570207141L.
*
* @since 1.5
*/
@SuppressWarnings("serial") // serialVersionUID is not constant
public class ModelMBeanNotificationInfo
extends MBeanNotificationInfo
implements DescriptorAccess {
// Serialization compatibility stuff:
// Two serial forms are supported in this class. The selected form
// depends on system property "jmx.serial.form":
// - "1.0" for JMX 1.0
// - any other value for JMX 1.1 and higher
//
// Serial version for old serial form
private static final long oldSerialVersionUID = -5211564525059047097L;
//
// Serial version for new serial form
private static final long newSerialVersionUID = -7445681389570207141L;
//
// Serializable fields in old serial form
private static final ObjectStreamField[] oldSerialPersistentFields =
{
new ObjectStreamField("notificationDescriptor", Descriptor.class),
new ObjectStreamField("currClass", String.class)
};
//
// Serializable fields in new serial form
private static final ObjectStreamField[] newSerialPersistentFields =
{
new ObjectStreamField("notificationDescriptor", Descriptor.class)
};
//
// Actual serial version and serial form
private static final long serialVersionUID;
/**
* @serialField notificationDescriptor Descriptor The descriptor
* containing the appropriate metadata for this instance
*/
private static final ObjectStreamField[] serialPersistentFields;
private static boolean compat = false;
static {
try {
GetPropertyAction act = new GetPropertyAction("jmx.serial.form");
String form = AccessController.doPrivileged(act);
compat = (form != null && form.equals("1.0"));
} catch (Exception e) {
// OK: No compat with 1.0
}
if (compat) {
serialPersistentFields = oldSerialPersistentFields;
serialVersionUID = oldSerialVersionUID;
} else {
serialPersistentFields = newSerialPersistentFields;
serialVersionUID = newSerialVersionUID;
}
}
//
// END Serialization compatibility stuff
/**
* @serial The descriptor containing the appropriate metadata for
* this instance
*/
private Descriptor notificationDescriptor;
private static final String currClass = "ModelMBeanNotificationInfo";
/**
* Constructs a ModelMBeanNotificationInfo object with a default
* descriptor.
*
* @param notifTypes The array of strings (in dot notation) containing
* the notification types that may be emitted.
* @param name The name of the Notification class.
* @param description A human readable description of the
* Notification. Optional.
**/
public ModelMBeanNotificationInfo(String[] notifTypes,
String name,
String description) {
this(notifTypes,name,description,null);
}
/**
* Constructs a ModelMBeanNotificationInfo object.
*
* @param notifTypes The array of strings (in dot notation)
* containing the notification types that may be emitted.
* @param name The name of the Notification class.
* @param description A human readable description of the Notification.
* Optional.
* @param descriptor An instance of Descriptor containing the
* appropriate metadata for this instance of the
* MBeanNotificationInfo. If it is null a default descriptor
* will be created. If the descriptor does not contain the
* fields "displayName" or "severity",
* the missing ones are added with their default values.
*
* @exception RuntimeOperationsException Wraps an
* {@link IllegalArgumentException}. The descriptor is invalid, or
* descriptor field "name" is not equal to parameter name, or
* descriptor field "descriptorType" is not equal to "notification".
*
**/
public ModelMBeanNotificationInfo(String[] notifTypes,
String name,
String description,
Descriptor descriptor) {
super(notifTypes, name, description);
if (MODELMBEAN_LOGGER.isLoggable(Level.FINER)) {
MODELMBEAN_LOGGER.logp(Level.FINER,
ModelMBeanNotificationInfo.class.getName(),
"ModelMBeanNotificationInfo", "Entry");
}
notificationDescriptor = validDescriptor(descriptor);
}
/**
* Constructs a new ModelMBeanNotificationInfo object from this
* ModelMBeanNotfication Object.
*
* @param inInfo the ModelMBeanNotificationInfo to be duplicated
*
**/
public ModelMBeanNotificationInfo(ModelMBeanNotificationInfo inInfo) {
this(inInfo.getNotifTypes(),
inInfo.getName(),
inInfo.getDescription(),inInfo.getDescriptor());
}
/**
* Creates and returns a new ModelMBeanNotificationInfo which is a
* duplicate of this ModelMBeanNotificationInfo.
**/
public Object clone () {
if (MODELMBEAN_LOGGER.isLoggable(Level.FINER)) {
MODELMBEAN_LOGGER.logp(Level.FINER,
ModelMBeanNotificationInfo.class.getName(),
"clone()", "Entry");
}
return(new ModelMBeanNotificationInfo(this));
}
/**
* Returns a copy of the associated Descriptor for the
* ModelMBeanNotificationInfo.
*
* @return Descriptor associated with the
* ModelMBeanNotificationInfo object.
*
* @see #setDescriptor
**/
public Descriptor getDescriptor() {
if (MODELMBEAN_LOGGER.isLoggable(Level.FINER)) {
MODELMBEAN_LOGGER.logp(Level.FINER,
ModelMBeanNotificationInfo.class.getName(),
"getDescriptor()", "Entry");
}
if (notificationDescriptor == null) {
// Dead code. Should never happen.
if (MODELMBEAN_LOGGER.isLoggable(Level.FINER)) {
MODELMBEAN_LOGGER.logp(Level.FINER,
ModelMBeanNotificationInfo.class.getName(),
"getDescriptor()", "Descriptor value is null, " +
"setting descriptor to default values");
}
notificationDescriptor = validDescriptor(null);
}
return((Descriptor)notificationDescriptor.clone());
}
/**
* Sets associated Descriptor (full replace) for the
* ModelMBeanNotificationInfo If the new Descriptor is null,
* then the associated Descriptor reverts to a default
* descriptor. The Descriptor is validated before it is
* assigned. If the new Descriptor is invalid, then a
* RuntimeOperationsException wrapping an
* IllegalArgumentException is thrown.
*
* @param inDescriptor replaces the Descriptor associated with the
* ModelMBeanNotification interface
*
* @exception RuntimeOperationsException Wraps an
* {@link IllegalArgumentException} for invalid Descriptor.
*
* @see #getDescriptor
**/
public void setDescriptor(Descriptor inDescriptor) {
if (MODELMBEAN_LOGGER.isLoggable(Level.FINER)) {
MODELMBEAN_LOGGER.logp(Level.FINER,
ModelMBeanNotificationInfo.class.getName(),
"setDescriptor(Descriptor)", "Entry");
}
notificationDescriptor = validDescriptor(inDescriptor);
}
/**
* Returns a human readable string containing
* ModelMBeanNotificationInfo.
*
* @return a string describing this object.
**/
public String toString() {
if (MODELMBEAN_LOGGER.isLoggable(Level.FINER)) {
MODELMBEAN_LOGGER.logp(Level.FINER,
ModelMBeanNotificationInfo.class.getName(),
"toString()", "Entry");
}
final StringBuilder retStr = new StringBuilder();
retStr.append("ModelMBeanNotificationInfo: ")
.append(this.getName());
retStr.append(" ; Description: ")
.append(this.getDescription());
retStr.append(" ; Descriptor: ")
.append(this.getDescriptor());
retStr.append(" ; Types: ");
String[] nTypes = this.getNotifTypes();
for (int i=0; i < nTypes.length; i++) {
if (i > 0) retStr.append(", ");
retStr.append(nTypes[i]);
}
return retStr.toString();
}
/**
* Clones the passed in Descriptor, sets default values, and checks for validity.
* If the Descriptor is invalid (for instance by having the wrong "name"),
* this indicates programming error and a RuntimeOperationsException will be thrown.
*
* The following fields will be defaulted if they are not already set:
* descriptorType="notification",displayName=this.getName(),
* name=this.getName(),severity="6"
*
*
* @param in Descriptor to be checked, or null which is equivalent to an
* empty Descriptor.
* @exception RuntimeOperationsException if Descriptor is invalid
*/
private Descriptor validDescriptor(final Descriptor in) throws RuntimeOperationsException {
Descriptor clone;
boolean defaulted = (in == null);
if (defaulted) {
clone = new DescriptorSupport();
MODELMBEAN_LOGGER.finer("Null Descriptor, creating new.");
} else {
clone = (Descriptor) in.clone();
}
//Setting defaults.
if (defaulted && clone.getFieldValue("name")==null) {
clone.setField("name", this.getName());
MODELMBEAN_LOGGER.finer("Defaulting Descriptor name to " + this.getName());
}
if (defaulted && clone.getFieldValue("descriptorType")==null) {
clone.setField("descriptorType", "notification");
MODELMBEAN_LOGGER.finer("Defaulting descriptorType to \"notification\"");
}
if (clone.getFieldValue("displayName") == null) {
clone.setField("displayName",this.getName());
MODELMBEAN_LOGGER.finer("Defaulting Descriptor displayName to " + this.getName());
}
if (clone.getFieldValue("severity") == null) {
clone.setField("severity", "6");
MODELMBEAN_LOGGER.finer("Defaulting Descriptor severity field to 6");
}
//Checking validity
if (!clone.isValid()) {
throw new RuntimeOperationsException(new IllegalArgumentException("Invalid Descriptor argument"),
"The isValid() method of the Descriptor object itself returned false,"+
"one or more required fields are invalid. Descriptor:" + clone.toString());
}
if (!getName().equalsIgnoreCase((String) clone.getFieldValue("name"))) {
throw new RuntimeOperationsException(new IllegalArgumentException("Invalid Descriptor argument"),
"The Descriptor \"name\" field does not match the object described. " +
" Expected: "+ this.getName() + " , was: " + clone.getFieldValue("name"));
}
if (!"notification".equalsIgnoreCase((String) clone.getFieldValue("descriptorType"))) {
throw new RuntimeOperationsException(new IllegalArgumentException("Invalid Descriptor argument"),
"The Descriptor \"descriptorType\" field does not match the object described. " +
" Expected: \"notification\" ," + " was: " + clone.getFieldValue("descriptorType"));
}
return clone;
}
/**
* Deserializes a {@link ModelMBeanNotificationInfo} from an
* {@link ObjectInputStream}.
**/
private void readObject(ObjectInputStream in)
throws IOException, ClassNotFoundException {
// New serial form ignores extra field "currClass"
in.defaultReadObject();
}
/**
* Serializes a {@link ModelMBeanNotificationInfo} to an
* {@link ObjectOutputStream}.
**/
private void writeObject(ObjectOutputStream out)
throws IOException {
if (compat) {
// Serializes this instance in the old serial form
//
ObjectOutputStream.PutField fields = out.putFields();
fields.put("notificationDescriptor", notificationDescriptor);
fields.put("currClass", currClass);
out.writeFields();
} else {
// Serializes this instance in the new serial form
//
out.defaultWriteObject();
}
}
}
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Java example source code file (ModelMBeanNotificationInfo.java)
The ModelMBeanNotificationInfo.java Java example source code/* * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /* * @author IBM Corp. * * Copyright IBM Corp. 1999-2000. All rights reserved. */ package javax.management.modelmbean; import static com.sun.jmx.defaults.JmxProperties.MODELMBEAN_LOGGER; import com.sun.jmx.mbeanserver.GetPropertyAction; import java.io.IOException; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.io.ObjectStreamField; import java.security.AccessController; import java.util.logging.Level; import javax.management.Descriptor; import javax.management.DescriptorAccess; import javax.management.MBeanNotificationInfo; import javax.management.RuntimeOperationsException; /** * <p>The ModelMBeanNotificationInfo object describes a notification emitted * by a ModelMBean. * It is a subclass of MBeanNotificationInfo with the addition of an * associated Descriptor and an implementation of the Descriptor interface.</p> * * <P id="descriptor"> * The fields in the descriptor are defined, but not limited to, the following. * Note that when the Type in this table is Number, a String that is the decimal * representation of a Long can also be used.</P> * * <table border="1" cellpadding="5" summary="ModelMBeanNotificationInfo Fields"> * <tr> | Name | Type | Meaning | |
|---|---|---|---|---|
| name | String | |||
| descriptorType | String | |||
| severity | Number | |||
| messageID | String | |||
| messageText | String | |||
| log | String | |||
| logfile | String | |||
| visibility | Number | |||
| presentationString | String |
