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javax.management
Class ObjectName  

java.lang.Object
  javax.management.ObjectName

All Implemented Interfaces:

java.io.Serializable

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public class ObjectName

extends java.lang.Object

implements java.io.Serializable

Object name represents the MBean reference.

Version:

$Revision: 1.10.4.2 $

Revisions:

20020521 Adrian Brock:

• Allow *,* in the hashtable properties to signify a property pattern

20020710 Adrian Brock:

• Serialization

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Field Summary
private  java.lang.String	ckProps
private  java.lang.String	domain
private  int	hash
private  boolean	hasPattern
private  boolean	hasPropertyPattern
private  java.lang.String	kProps
private  java.util.Hashtable	propertiesHash
private static java.io.ObjectStreamField[]	serialPersistentFields
private static long	serialVersionUID

 

Constructor Summary

ObjectName(java.lang.String name)

ObjectName(java.lang.String domain, java.util.Hashtable table)

ObjectName(java.lang.String domain, java.lang.String key, java.lang.String value)

 

Method Summary
boolean	equals(java.lang.Object object)           Determine whether this Object is semantically equal to another Object.
java.lang.String	getCanonicalKeyPropertyListString()
java.lang.String	getCanonicalName()
java.lang.String	getDomain()
java.lang.String	getKeyProperty(java.lang.String property)
java.util.Hashtable	getKeyPropertyList()
java.lang.String	getKeyPropertyListString()
int	hashCode()           Get a value that represents this Object, as uniquely as possible within the confines of an int.
private  void	init(java.lang.String name)           constructs an object name from a string
private  void	initDomain(java.lang.String dstring)           checks for domain patterns and illegal characters
private  void	initProperties(java.util.Hashtable properties)           validates incoming properties hashtable builds canonical string precomputes the hashcode
private  void	initProperties(java.lang.String properties)           takes the properties string and breaks it up into key/value pairs for insertion into a newly created hashtable.
private  boolean	isIllegalDomain(java.lang.String dom)           returns true if the domain contains illegal characters
private  boolean	isIllegalKeyOrValue(java.lang.String keyOrValue)           returns true if the key or value string is zero length or contains illegal characters
boolean	isPattern()
boolean	isPropertyPattern()
private  void	readObject(java.io.ObjectInputStream ois)
java.lang.String	toString()           Convert this Object to a human-readable String.
private  void	writeObject(java.io.ObjectOutputStream oos)

 

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

 

Field Detail

hasPattern

private transient boolean hasPattern

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hasPropertyPattern

private transient boolean hasPropertyPattern

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propertiesHash

private transient java.util.Hashtable propertiesHash

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domain

private transient java.lang.String domain

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kProps

private transient java.lang.String kProps

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ckProps

private transient java.lang.String ckProps

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hash

private transient int hash

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serialVersionUID

private static final long serialVersionUID

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serialPersistentFields

private static final java.io.ObjectStreamField[] serialPersistentFields

Constructor Detail

ObjectName

public ObjectName(java.lang.String name)
           throws MalformedObjectNameException

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ObjectName

public ObjectName(java.lang.String domain,
                  java.lang.String key,
                  java.lang.String value)
           throws MalformedObjectNameException

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ObjectName

public ObjectName(java.lang.String domain,
                  java.util.Hashtable table)
           throws MalformedObjectNameException

Method Detail

equals

public boolean equals(java.lang.Object object)

Description copied from class: java.lang.Object

Determine whether this Object is semantically equal to another Object.

There are some fairly strict requirements on this method which subclasses must follow:

• It must be transitive. If a.equals(b) and b.equals(c), then a.equals(c) must be true as well.
• It must be symmetric. a.equals(b) and b.equals(a) must have the same value.
• It must be reflexive. a.equals(a) must always be true.
• It must be consistent. Whichever value a.equals(b) returns on the first invocation must be the value returned on all later invocations.
• a.equals(null) must be false.
• It must be consistent with hashCode(). That is, a.equals(b) must imply a.hashCode() == b.hashCode(). The reverse is not true; two objects that are not equal may have the same hashcode, but that has the potential to harm hashing performance.

This is typically overridden to throw a java.lang.ClassCastException if the argument is not comparable to the class performing the comparison, but that is not a requirement. It is legal for a.equals(b) to be true even though a.getClass() != b.getClass(). Also, it is typical to never cause a java.lang.NullPointerException.

In general, the Collections API (java.util) use the equals method rather than the == operator to compare objects. However, java.util.IdentityHashMap is an exception to this rule, for its own good reasons.

The default implementation returns this == o.

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hashCode

public int hashCode()

Description copied from class: java.lang.Object

Get a value that represents this Object, as uniquely as possible within the confines of an int.

There are some requirements on this method which subclasses must follow:

• Semantic equality implies identical hashcodes. In other words, if a.equals(b) is true, then a.hashCode() == b.hashCode() must be as well. However, the reverse is not necessarily true, and two objects may have the same hashcode without being equal.
• It must be consistent. Whichever value o.hashCode() returns on the first invocation must be the value returned on all later invocations as long as the object exists. Notice, however, that the result of hashCode may change between separate executions of a Virtual Machine, because it is not invoked on the same object.

Notice that since hashCode is used in java.util.Hashtable and other hashing classes, a poor implementation will degrade the performance of hashing (so don't blindly implement it as returning a constant!). Also, if calculating the hash is time-consuming, a class may consider caching the results.

The default implementation returns System.identityHashCode(this)

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toString

public java.lang.String toString()

Description copied from class: java.lang.Object

Convert this Object to a human-readable String. There are no limits placed on how long this String should be or what it should contain. We suggest you make it as intuitive as possible to be able to place it into System.out.println() 55 and such.

It is typical, but not required, to ensure that this method never completes abruptly with a java.lang.RuntimeException.

This method will be called when performing string concatenation with this object. If the result is null, string concatenation will instead use "null".

The default implementation returns getClass().getName() + "@" + Integer.toHexString(hashCode()).

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isPattern

public boolean isPattern()

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getCanonicalName

public java.lang.String getCanonicalName()

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getDomain

public java.lang.String getDomain()

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getKeyProperty

public java.lang.String getKeyProperty(java.lang.String property)

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getKeyPropertyList

public java.util.Hashtable getKeyPropertyList()

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getKeyPropertyListString

public java.lang.String getKeyPropertyListString()

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getCanonicalKeyPropertyListString

public java.lang.String getCanonicalKeyPropertyListString()

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isPropertyPattern

public boolean isPropertyPattern()

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init

private void init(java.lang.String name)
           throws MalformedObjectNameException

constructs an object name from a string

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initDomain

private void initDomain(java.lang.String dstring)
                 throws MalformedObjectNameException

checks for domain patterns and illegal characters

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initProperties

private void initProperties(java.lang.String properties)
                     throws MalformedObjectNameException

takes the properties string and breaks it up into key/value pairs for insertion into a newly created hashtable. minimal validation is performed so that it doesn't blow up when constructing the kvp strings. checks for duplicate keys detects property patterns

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initProperties

private void initProperties(java.util.Hashtable properties)
                     throws MalformedObjectNameException

validates incoming properties hashtable builds canonical string precomputes the hashcode

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isIllegalKeyOrValue

private boolean isIllegalKeyOrValue(java.lang.String keyOrValue)

returns true if the key or value string is zero length or contains illegal characters

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isIllegalDomain

private boolean isIllegalDomain(java.lang.String dom)

returns true if the domain contains illegal characters

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readObject

private void readObject(java.io.ObjectInputStream ois)
                 throws java.io.IOException,
                        java.lang.ClassNotFoundException

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writeObject

private void writeObject(java.io.ObjectOutputStream oos)
                  throws java.io.IOException

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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> javax >> [ management overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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