javax.management
Class MBeanAttributeInfo

java.lang.Object
  javax.management.MBeanFeatureInfo
      javax.management.MBeanAttributeInfo

All Implemented Interfaces:

Serializable, Cloneable, DescriptorRead

Direct Known Subclasses:

ModelMBeanAttributeInfo, OpenMBeanAttributeInfoSupport

public class MBeanAttributeInfo
extends MBeanFeatureInfo
implements Cloneable

Describes an MBean attribute exposed for management. Instances of this class are immutable. Subclasses may be mutable but this is not recommended.

Since:

1.5

See Also:

Serialized Form

Field Summary

Fields inherited from class javax.management.MBeanFeatureInfo

description, name

Constructor Summary

MBeanAttributeInfo(String name, String description, Method getter, Method setter)
This constructor takes the name of a simple attribute, and Method objects for reading and writing the attribute.

MBeanAttributeInfo(String name, String type, String description, boolean isReadable, boolean isWritable, boolean isIs)
Constructs an MBeanAttributeInfo object.

MBeanAttributeInfo(String name, String type, String description, boolean isReadable, boolean isWritable, boolean isIs, Descriptor descriptor)
Constructs an MBeanAttributeInfo object.

Method Summary

Object	clone() Returns a shallow clone of this instance.
boolean	equals(Object o) Compare this MBeanAttributeInfo to another.
String	getType() Returns the class name of the attribute.
int	hashCode() hashCode returns a hash code for this object.
boolean	isIs() Indicates if this attribute has an "is" getter.
boolean	isReadable() Whether the value of the attribute can be read.
boolean	isWritable() Whether new values can be written to the attribute.
String	toString() toString creates a printable string that represents this object for debugging purposes.

Methods inherited from class javax.management.MBeanFeatureInfo

getDescription, getDescriptor, getName

Methods inherited from class java.lang.Object

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

Constructor Detail

MBeanAttributeInfo

public MBeanAttributeInfo(String name,
                          String type,
                          String description,
                          boolean isReadable,
                          boolean isWritable,
                          boolean isIs)

Constructs an MBeanAttributeInfo object.

Parameters:

name - The name of the attribute.

type - The type or class name of the attribute.

description - A human readable description of the attribute.

isReadable - True if the attribute has a getter method, false otherwise.

isWritable - True if the attribute has a setter method, false otherwise.

isIs - True if this attribute has an "is" getter, false otherwise.

Throws:

IllegalArgumentException - if isIs is true but isReadable is not, or if isIs is true and type is not boolean or java.lang.Boolean. (New code should always use boolean rather than java.lang.Boolean.)

MBeanAttributeInfo

public MBeanAttributeInfo(String name,
                          String type,
                          String description,
                          boolean isReadable,
                          boolean isWritable,
                          boolean isIs,
                          Descriptor descriptor)

Constructs an MBeanAttributeInfo object.

Parameters:

name - The name of the attribute.

type - The type or class name of the attribute.

description - A human readable description of the attribute.

isReadable - True if the attribute has a getter method, false otherwise.

isWritable - True if the attribute has a setter method, false otherwise.

isIs - True if this attribute has an "is" getter, false otherwise.

descriptor - The descriptor for the attribute. This may be null which is equivalent to an empty descriptor.

Throws:

IllegalArgumentException - if isIs is true but isReadable is not, or if isIs is true and type is not boolean or java.lang.Boolean. (New code should always use boolean rather than java.lang.Boolean.)

Since:

1.6

MBeanAttributeInfo

public MBeanAttributeInfo(String name,
                          String description,
                          Method getter,
                          Method setter)
                   throws IntrospectionException

This constructor takes the name of a simple attribute, and Method objects for reading and writing the attribute. The Descriptor of the constructed object will include fields contributed by any annotations on the Method objects that contain the DescriptorKey meta-annotation.

Parameters:

name - The programmatic name of the attribute.

description - A human readable description of the attribute.

getter - The method used for reading the attribute value. May be null if the property is write-only.

setter - The method used for writing the attribute value. May be null if the attribute is read-only.

Throws:

IntrospectionException - There is a consistency problem in the definition of this attribute.

Method Detail

clone

public Object clone()

Returns a shallow clone of this instance. The clone is obtained by simply calling super.clone(), thus calling the default native shallow cloning mechanism implemented by Object.clone(). No deeper cloning of any internal field is made.

Since this class is immutable, cloning is chiefly of interest to subclasses.

Overrides:

clone in class Object

Returns:

a clone of this object.

getType

public String getType()

Returns the class name of the attribute.

Returns:

the class name.

isReadable

public boolean isReadable()

Whether the value of the attribute can be read.

Returns:

True if the attribute can be read, false otherwise.

isWritable

public boolean isWritable()

Whether new values can be written to the attribute.

Returns:

True if the attribute can be written to, false otherwise.

isIs

public boolean isIs()

Indicates if this attribute has an "is" getter.

Returns:

true if this attribute has an "is" getter.

toString

public String toString()

Description copied from class: Object

toString creates a printable string that represents this object for debugging purposes.

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

Overrides:

toString in class Object

Returns:

a string identifying this object.

equals

public boolean equals(Object o)

Compare this MBeanAttributeInfo to another.

Overrides:

equals in class MBeanFeatureInfo

Parameters:

o - the object to compare to.

Returns:

true if and only if o is an MBeanAttributeInfo such that its MBeanFeatureInfo.getName(), getType(), MBeanFeatureInfo.getDescription(), isReadable(), isWritable(), and isIs() values are equal (not necessarily identical) to those of this MBeanAttributeInfo.

hashCode

public int hashCode()

Description copied from class: Object

hashCode returns a hash code for this object. The hash code must be equal for two objects a and b if a.equals(b) is true.

The default implementation returns System.identityHashCode(this).

Overrides:

hashCode in class MBeanFeatureInfo

Returns:

a hash code value.