ModelMBeanOperationInfo (Java Platform SE 8 )
Keywords: javax.management.modelmbean.ModelMBeanOperationInfo class
Date: 2026-07-22

compact3
javax.management.modelmbean

## Class ModelMBeanOperationInfo

- java.lang.Object
- - javax.management.MBeanFeatureInfo
  - - javax.management.MBeanOperationInfo
    - - javax.management.modelmbean.ModelMBeanOperationInfo

- All Implemented Interfaces:
    Serializable, Cloneable, DescriptorAccess, DescriptorRead

      public class ModelMBeanOperationInfo
      extends MBeanOperationInfo
      implements DescriptorAccess

  The ModelMBeanOperationInfo object describes a management operation of the ModelMBean. It is a subclass of MBeanOperationInfo with the addition of an associated Descriptor and an implementation of the DescriptorAccess interface.

  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.

  Name | Type | Meaning
  --- | --- | ---
  name | String | Operation name.
  descriptorType | String | Must be "operation".
  class | String | Class where method is defined (fully qualified).
  role | String | Must be "operation", "getter", or "setter".
  targetObject | Object | Object on which to execute this method.
  targetType | String | type of object reference for targetObject. Can be: ObjectReference | Handle | EJBHandle | IOR | RMIReference.
  value | Object | Cached value for operation.
  displayName | String | Human readable display name of the operation.
  currencyTimeLimit | Number | How long cached value is valid.
  lastUpdatedTimeStamp | Number | When cached value was set.
  visibility | Number | 1-4 where 1: always visible 4: rarely visible.
  presentationString | String | XML formatted string to describe how to present operation

  The default descriptor will have name, descriptorType, displayName and role fields set. The default value of the name and displayName fields is the operation name.

  Note: because of inconsistencies in previous versions of this specification, it is recommended not to use negative or zero values for `currencyTimeLimit`. To indicate that a cached value is never valid, omit the `currencyTimeLimit` field. To indicate that it is always valid, use a very large number for this field.

  The serialVersionUID of this class is `6532732096650090465L`.

  Since:
    1.5
  See Also:
    Serialized Form

- - ### Field Summary

    - ### Fields inherited from class javax.management.MBeanOperationInfo

      `ACTION, ACTION_INFO, INFO, UNKNOWN`

    - ### Fields inherited from class javax.management.MBeanFeatureInfo

      `description, name`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `ModelMBeanOperationInfo(ModelMBeanOperationInfo inInfo)` Constructs a new ModelMBeanOperationInfo object from this ModelMBeanOperation Object.
    `ModelMBeanOperationInfo(String description, Method operationMethod)` Constructs a ModelMBeanOperationInfo object with a default descriptor.
    `ModelMBeanOperationInfo(String description, Method operationMethod, Descriptor descriptor)` Constructs a ModelMBeanOperationInfo object.
    `ModelMBeanOperationInfo(String name, String description, MBeanParameterInfo[] signature, String type, int impact)` Constructs a ModelMBeanOperationInfo object with a default descriptor.
    `ModelMBeanOperationInfo(String name, String description, MBeanParameterInfo[] signature, String type, int impact, Descriptor descriptor)` Constructs a ModelMBeanOperationInfo object.

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `Object` | `clone()` Creates and returns a new ModelMBeanOperationInfo which is a duplicate of this ModelMBeanOperationInfo.
    `Descriptor` | `getDescriptor()` Returns a copy of the associated Descriptor of the ModelMBeanOperationInfo.
    `void` | `setDescriptor(Descriptor inDescriptor)` Sets associated Descriptor (full replace) for the ModelMBeanOperationInfo If the new Descriptor is null, then the associated Descriptor reverts to a default descriptor.
    `String` | `toString()` Returns a string containing the entire contents of the ModelMBeanOperationInfo in human readable form.

    - ### Methods inherited from class javax.management.MBeanOperationInfo

      `equals, getImpact, getReturnType, getSignature, hashCode`

    - ### Methods inherited from class javax.management.MBeanFeatureInfo

      `getDescription, getName`

    - ### Methods inherited from class java.lang.Object

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

- - ### Constructor Detail

    - #### ModelMBeanOperationInfo

          public ModelMBeanOperationInfo(String description,
                                         Method operationMethod)

      Constructs a ModelMBeanOperationInfo object with a default descriptor. The `Descriptor` of the constructed object will include fields contributed by any annotations on the `Method` object that contain the `DescriptorKey` meta-annotation.
      Parameters:
        `operationMethod` - The java.lang.reflect.Method object describing the MBean operation.
        `description` - A human readable description of the operation.

    - #### ModelMBeanOperationInfo

          public ModelMBeanOperationInfo(String description,
                                         Method operationMethod,
                                         Descriptor descriptor)

      Constructs a ModelMBeanOperationInfo object. The `Descriptor` of the constructed object will include fields contributed by any annotations on the `Method` object that contain the `DescriptorKey` meta-annotation.
      Parameters:
        `operationMethod` - The java.lang.reflect.Method object describing the MBean operation.
        `description` - A human readable description of the operation.
        `descriptor` - An instance of Descriptor containing the appropriate metadata for this instance of the ModelMBeanOperationInfo. If it is null a default descriptor will be created. If the descriptor does not contain the fields "displayName" or "role", the missing ones are added with their default values.
      Throws:
        `RuntimeOperationsException` - Wraps an IllegalArgumentException. The descriptor is invalid; or descriptor field "name" is not equal to operation name; or descriptor field "DescriptorType" is not equal to "operation"; or descriptor optional field "role" is present but not equal to "operation", "getter", or "setter".

    - #### ModelMBeanOperationInfo

          public ModelMBeanOperationInfo(String name,
                                         String description,
                                         MBeanParameterInfo[] signature,
                                         String type,
                                         int impact)

      Constructs a ModelMBeanOperationInfo object with a default descriptor.
      Parameters:
        `name` - The name of the method.
        `description` - A human readable description of the operation.
        `signature` - MBeanParameterInfo objects describing the parameters(arguments) of the method.
        `type` - The type of the method's return value.
        `impact` - The impact of the method, one of INFO, ACTION, ACTION_INFO, UNKNOWN.

    - #### ModelMBeanOperationInfo

          public ModelMBeanOperationInfo(String name,
                                         String description,
                                         MBeanParameterInfo[] signature,
                                         String type,
                                         int impact,
                                         Descriptor descriptor)

      Constructs a ModelMBeanOperationInfo object.
      Parameters:
        `name` - The name of the method.
        `description` - A human readable description of the operation.
        `signature` - MBeanParameterInfo objects describing the parameters(arguments) of the method.
        `type` - The type of the method's return value.
        `impact` - The impact of the method, one of INFO, ACTION, ACTION_INFO, UNKNOWN.
        `descriptor` - An instance of Descriptor containing the appropriate metadata for this instance of the MBeanOperationInfo. If it is null then a default descriptor will be created. If the descriptor does not contain fields "displayName" or "role", the missing ones are added with their default values.
      Throws:
        `RuntimeOperationsException` - Wraps an IllegalArgumentException. The descriptor is invalid; or descriptor field "name" is not equal to operation name; or descriptor field "DescriptorType" is not equal to "operation"; or descriptor optional field "role" is present but not equal to "operation", "getter", or "setter".

    - #### ModelMBeanOperationInfo

          public ModelMBeanOperationInfo(ModelMBeanOperationInfo inInfo)

      Constructs a new ModelMBeanOperationInfo object from this ModelMBeanOperation Object.
      Parameters:
        `inInfo` - the ModelMBeanOperationInfo to be duplicated

  - ### Method Detail

    - #### clone

          public Object clone()

      Creates and returns a new ModelMBeanOperationInfo which is a duplicate of this ModelMBeanOperationInfo.
      Overrides:
        `clone` in class `MBeanOperationInfo`
      Returns:
        a clone of this instance.
      See Also:
        `Cloneable`

    - #### getDescriptor

          public Descriptor getDescriptor()

      Returns a copy of the associated Descriptor of the ModelMBeanOperationInfo.
      Specified by:
        `getDescriptor` in interface `DescriptorRead`
      Overrides:
        `getDescriptor` in class `MBeanFeatureInfo`
      Returns:
        Descriptor associated with the ModelMBeanOperationInfo object.
      See Also:
        `setDescriptor(javax.management.Descriptor)`

    - #### setDescriptor

          public void setDescriptor(Descriptor inDescriptor)

      Sets associated Descriptor (full replace) for the ModelMBeanOperationInfo 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.
      Specified by:
        `setDescriptor` in interface `DescriptorAccess`
      Parameters:
        `inDescriptor` - replaces the Descriptor associated with the ModelMBeanOperation.
      Throws:
        `RuntimeOperationsException` - Wraps an IllegalArgumentException for invalid Descriptor.
      See Also:
        `getDescriptor()`

    - #### toString

          public String toString()

      Returns a string containing the entire contents of the ModelMBeanOperationInfo in human readable form.
      Overrides:
        `toString` in class `MBeanOperationInfo`
      Returns:
        a string representation of the object.

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