public class

OpenMBeanOperationInfoSupport

extends MBeanOperationInfo
implements OpenMBeanOperationInfo
java.lang.Object
   ↳ javax.management.MBeanFeatureInfo
     ↳ javax.management.MBeanOperationInfo
       ↳ javax.management.openmbean.OpenMBeanOperationInfoSupport

Class Overview

Describes an operation of an Open MBean.

Summary

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Inherited Constants
From class javax.management.MBeanOperationInfo
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Inherited Fields
From class javax.management.MBeanFeatureInfo
Public Constructors
OpenMBeanOperationInfoSupport(String name, String description, OpenMBeanParameterInfo[] signature, OpenType<?> returnOpenType, int impact)

Constructs an OpenMBeanOperationInfoSupport instance, which describes the operation of a class of open MBeans, with the specified name, description, signature, returnOpenType and impact.

OpenMBeanOperationInfoSupport(String name, String description, OpenMBeanParameterInfo[] signature, OpenType<?> returnOpenType, int impact, Descriptor descriptor)

Constructs an OpenMBeanOperationInfoSupport instance, which describes the operation of a class of open MBeans, with the specified name, description, signature, returnOpenType, impact, and descriptor.

Public Methods
boolean equals(Object obj)

Compares the specified obj parameter with this OpenMBeanOperationInfoSupport instance for equality.

OpenType<?> getReturnOpenType()
Returns the open type of the values returned by the operation described by this OpenMBeanOperationInfo instance.
int hashCode()

Returns the hash code value for this OpenMBeanOperationInfoSupport instance.

String toString()

Returns a string representation of this OpenMBeanOperationInfoSupport instance.

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Inherited Methods
From class javax.management.MBeanOperationInfo
From class javax.management.MBeanFeatureInfo
From class java.lang.Object
From interface javax.management.DescriptorRead
From interface javax.management.openmbean.OpenMBeanOperationInfo

Public Constructors

public OpenMBeanOperationInfoSupport (String name, String description, OpenMBeanParameterInfo[] signature, OpenType<?> returnOpenType, int impact)

Constructs an OpenMBeanOperationInfoSupport instance, which describes the operation of a class of open MBeans, with the specified name, description, signature, returnOpenType and impact.

The signature array parameter is internally copied, so that subsequent changes to the array referenced by signature have no effect on this instance.

Parameters
name cannot be a null or empty string.
description cannot be a null or empty string.
signature can be null or empty if there are no parameters to describe.
returnOpenType cannot be null: use SimpleType.VOID for operations that return nothing.
impact must be one of ACTION, ACTION_INFO, INFO, or UNKNOWN.
Throws
IllegalArgumentException if name or description are null or empty string, or returnOpenType is null, or impact is not one of ACTION, ACTION_INFO, INFO, or UNKNOWN.
ArrayStoreException If signature is not an array of instances of a subclass of MBeanParameterInfo.

public OpenMBeanOperationInfoSupport (String name, String description, OpenMBeanParameterInfo[] signature, OpenType<?> returnOpenType, int impact, Descriptor descriptor)

Constructs an OpenMBeanOperationInfoSupport instance, which describes the operation of a class of open MBeans, with the specified name, description, signature, returnOpenType, impact, and descriptor.

The signature array parameter is internally copied, so that subsequent changes to the array referenced by signature have no effect on this instance.

Parameters
name cannot be a null or empty string.
description cannot be a null or empty string.
signature can be null or empty if there are no parameters to describe.
returnOpenType cannot be null: use SimpleType.VOID for operations that return nothing.
impact must be one of ACTION, ACTION_INFO, INFO, or UNKNOWN.
descriptor The descriptor for the operation. This may be null, which is equivalent to an empty descriptor.
Throws
IllegalArgumentException if name or description are null or empty string, or returnOpenType is null, or impact is not one of ACTION, ACTION_INFO, INFO, or UNKNOWN.
ArrayStoreException If signature is not an array of instances of a subclass of MBeanParameterInfo.

Public Methods

public boolean equals (Object obj)

Compares the specified obj parameter with this OpenMBeanOperationInfoSupport instance for equality.

Returns true if and only if all of the following statements are true:

  • obj is non null,
  • obj also implements the OpenMBeanOperationInfo interface,
  • their names are equal
  • their signatures are equal
  • their return open types are equal
  • their impacts are equal
This ensures that this equals method works properly for obj parameters which are different implementations of the OpenMBeanOperationInfo interface.

Parameters
obj the object to be compared for equality with this OpenMBeanOperationInfoSupport instance;
Returns
  • true if the specified object is equal to this OpenMBeanOperationInfoSupport instance.

public OpenType<?> getReturnOpenType ()

Returns the open type of the values returned by the operation described by this OpenMBeanOperationInfo instance.

Returns
  • the return type.

public int hashCode ()

Returns the hash code value for this OpenMBeanOperationInfoSupport instance.

The hash code of an OpenMBeanOperationInfoSupport instance is the sum of the hash codes of all elements of information used in equals comparisons (ie: its name, return open type, impact and signature, where the signature hashCode is calculated by a call to java.util.Arrays.asList(this.getSignature).hashCode()).

This ensures that t1.equals(t2) implies that t1.hashCode()==t2.hashCode() for any two OpenMBeanOperationInfoSupport instances t1 and t2, as required by the general contract of the method Object.hashCode().

However, note that another instance of a class implementing the OpenMBeanOperationInfo interface may be equal to this OpenMBeanOperationInfoSupport instance as defined by equals(java.lang.Object), but may have a different hash code if it is calculated differently.

As OpenMBeanOperationInfoSupport instances are immutable, the hash code for this instance is calculated once, on the first call to hashCode, and then the same value is returned for subsequent calls.

Returns
  • the hash code value for this OpenMBeanOperationInfoSupport instance

public String toString ()

Returns a string representation of this OpenMBeanOperationInfoSupport instance.

The string representation consists of the name of this class (ie javax.management.openmbean.OpenMBeanOperationInfoSupport), and the name, signature, return open type and impact of the described operation and the string representation of its descriptor.

As OpenMBeanOperationInfoSupport instances are immutable, the string representation for this instance is calculated once, on the first call to toString, and then the same value is returned for subsequent calls.

Returns
  • a string representation of this OpenMBeanOperationInfoSupport instance