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package javax.management.openmbean;


// java import
//


// jmx import
//
import javax.management.MBeanParameterInfo;


Describes an operation of an Open MBean.


This interface declares the same methods as the class MBeanOperationInfo. A class implementing this interface (typically OpenMBeanOperationInfoSupport) should extend MBeanOperationInfo.


The getSignature() method should return at runtime an array of instances of a subclass of MBeanParameterInfo which implements the OpenMBeanParameterInfo interface (typically OpenMBeanParameterInfoSupport).


Since:1.5
/**
 * <p>Describes an operation of an Open MBean.</p>
 *
 * <p>This interface declares the same methods as the class {@link
 * javax.management.MBeanOperationInfo}.  A class implementing this
 * interface (typically {@link OpenMBeanOperationInfoSupport}) should
 * extend {@link javax.management.MBeanOperationInfo}.</p>
 *
 * <p>The {@link #getSignature()} method should return at runtime an
 * array of instances of a subclass of {@link MBeanParameterInfo}
 * which implements the {@link OpenMBeanParameterInfo} interface
 * (typically {@link OpenMBeanParameterInfoSupport}).</p>
 *
 *
 * @since 1.5
 */
public interface OpenMBeanOperationInfo  {

    // Re-declares fields and methods that are in class MBeanOperationInfo of JMX 1.0
    // (fields and methods will be removed when MBeanOperationInfo is made a parent interface of this interface)

    
Returns a human readable description of the operation
described by this OpenMBeanOperationInfo instance.

Returns:the description.
/**
     * Returns a human readable description of the operation
     * described by this <tt>OpenMBeanOperationInfo</tt> instance.
     *
     * @return the description.
     */
    public String getDescription() ;

    
Returns the name of the operation
described by this OpenMBeanOperationInfo instance.

Returns:the name.
/**
     * Returns the name of the operation
     * described by this <tt>OpenMBeanOperationInfo</tt> instance.
     *
     * @return the name.
     */
    public String getName() ;

    
Returns an array of OpenMBeanParameterInfo instances
describing each parameter in the signature of the operation
described by this OpenMBeanOperationInfo instance.
Each instance in the returned array should actually be a
subclass of MBeanParameterInfo which implements the
OpenMBeanParameterInfo interface (typically OpenMBeanParameterInfoSupport). 
Returns:the signature.
/**
     * Returns an array of <tt>OpenMBeanParameterInfo</tt> instances
     * describing each parameter in the signature of the operation
     * described by this <tt>OpenMBeanOperationInfo</tt> instance.
     * Each instance in the returned array should actually be a
     * subclass of <tt>MBeanParameterInfo</tt> which implements the
     * <tt>OpenMBeanParameterInfo</tt> interface (typically {@link
     * OpenMBeanParameterInfoSupport}).
     *
     * @return the signature.
     */
    public MBeanParameterInfo[] getSignature() ;

    
Returns an int constant qualifying the impact of the
operation described by this OpenMBeanOperationInfo instance. The returned constant is one of MBeanOperationInfo.INFO, MBeanOperationInfo.ACTION, MBeanOperationInfo.ACTION_INFO, or MBeanOperationInfo.UNKNOWN. 
Returns:the impact code.
/**
     * Returns an <tt>int</tt> constant qualifying the impact of the
     * operation described by this <tt>OpenMBeanOperationInfo</tt>
     * instance.
     *
     * The returned constant is one of {@link
     * javax.management.MBeanOperationInfo#INFO}, {@link
     * javax.management.MBeanOperationInfo#ACTION}, {@link
     * javax.management.MBeanOperationInfo#ACTION_INFO}, or {@link
     * javax.management.MBeanOperationInfo#UNKNOWN}.
     *
     * @return the impact code.
     */
    public int getImpact() ;

    
Returns the fully qualified Java class name of the values
returned by the operation described by this
OpenMBeanOperationInfo instance.  This method should
return the same value as a call to
getReturnOpenType().getClassName().

Returns:the return type.
/**
     * Returns the fully qualified Java class name of the values
     * returned by the operation described by this
     * <tt>OpenMBeanOperationInfo</tt> instance.  This method should
     * return the same value as a call to
     * <tt>getReturnOpenType().getClassName()</tt>.
     *
     * @return the return type.
     */
    public String getReturnType() ;


    // Now declares methods that are specific to open MBeans
    //

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

Returns:the return type.
/**
     * Returns the <i>open type</i> of the values returned by the
     * operation described by this <tt>OpenMBeanOperationInfo</tt>
     * instance.
     *
     * @return the return type.
     */
    public OpenType<?> getReturnOpenType() ; // open MBean specific method


    // commodity methods
    //

    
Compares the specified obj parameter with this OpenMBeanOperationInfo 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.

 

Params:
  • obj –  the object to be compared for equality with this OpenMBeanOperationInfo instance;
Returns: true if the specified object is equal to this OpenMBeanOperationInfo instance.
/**
     * Compares the specified <var>obj</var> parameter with this <code>OpenMBeanOperationInfo</code> instance for equality.
     * <p>
     * Returns <tt>true</tt> if and only if all of the following statements are true:
     * <ul>
     * <li><var>obj</var> is non null,</li>
     * <li><var>obj</var> also implements the <code>OpenMBeanOperationInfo</code> interface,</li>
     * <li>their names are equal</li>
     * <li>their signatures are equal</li>
     * <li>their return open types are equal</li>
     * <li>their impacts are equal</li>
     * </ul>
     * This ensures that this <tt>equals</tt> method works properly for <var>obj</var> parameters which are
     * different implementations of the <code>OpenMBeanOperationInfo</code> interface.
     * <br>&nbsp;
     * @param  obj  the object to be compared for equality with this <code>OpenMBeanOperationInfo</code> instance;
     *
     * @return  <code>true</code> if the specified object is equal to this <code>OpenMBeanOperationInfo</code> instance.
     */
    public boolean equals(Object obj);

    
Returns the hash code value for this OpenMBeanOperationInfo instance.


The hash code of an OpenMBeanOperationInfo 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 OpenMBeanOperationInfo instances t1 and t2, as required by the general contract of the method Object.hashCode(). 


Returns: the hash code value for this OpenMBeanOperationInfo instance
/**
     * Returns the hash code value for this <code>OpenMBeanOperationInfo</code> instance.
     * <p>
     * The hash code of an <code>OpenMBeanOperationInfo</code> instance is the sum of the hash codes
     * of all elements of information used in <code>equals</code> comparisons
     * (ie: its name, return open type, impact and signature, where the signature hashCode is calculated by a call to
     *  <tt>java.util.Arrays.asList(this.getSignature).hashCode()</tt>).
     * <p>
     * This ensures that <code> t1.equals(t2) </code> implies that <code> t1.hashCode()==t2.hashCode() </code>
     * for any two <code>OpenMBeanOperationInfo</code> instances <code>t1</code> and <code>t2</code>,
     * as required by the general contract of the method
     * {@link Object#hashCode() Object.hashCode()}.
     * <p>
     *
     * @return  the hash code value for this <code>OpenMBeanOperationInfo</code> instance
     */
    public int hashCode();

    
Returns a string representation of this OpenMBeanOperationInfo instance.


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

Returns: a string representation of this OpenMBeanOperationInfo instance
/**
     * Returns a string representation of this <code>OpenMBeanOperationInfo</code> instance.
     * <p>
     * The string representation consists of the name of this class (ie <code>javax.management.openmbean.OpenMBeanOperationInfo</code>),
     * and the name, signature, return open type and impact of the described operation.
     *
     * @return  a string representation of this <code>OpenMBeanOperationInfo</code> instance
     */
    public String toString();

}