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189 lines
7.3 KiB
Java
189 lines
7.3 KiB
Java
/*
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* Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package javax.management.openmbean;
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// java import
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//
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// jmx import
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//
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import javax.management.MBeanAttributeInfo;
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import javax.management.MBeanOperationInfo;
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import javax.management.MBeanConstructorInfo;
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import javax.management.MBeanNotificationInfo;
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/**
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* <p>Describes an Open MBean: an Open MBean is recognized as such if
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* its {@link javax.management.DynamicMBean#getMBeanInfo()
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* getMBeanInfo()} method returns an instance of a class which
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* implements the {@link OpenMBeanInfo} interface, typically {@link
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* OpenMBeanInfoSupport}.</p>
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*
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* <p>This interface declares the same methods as the class {@link
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* javax.management.MBeanInfo}. A class implementing this interface
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* (typically {@link OpenMBeanInfoSupport}) should extend {@link
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* javax.management.MBeanInfo}.</p>
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*
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* <p>The {@link #getAttributes()}, {@link #getOperations()} and
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* {@link #getConstructors()} methods of the implementing class should
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* return at runtime an array of instances of a subclass of {@link
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* MBeanAttributeInfo}, {@link MBeanOperationInfo} or {@link
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* MBeanConstructorInfo} respectively which implement the {@link
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* OpenMBeanAttributeInfo}, {@link OpenMBeanOperationInfo} or {@link
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* OpenMBeanConstructorInfo} interface respectively.
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*
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*
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* @since 1.5
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*/
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public interface OpenMBeanInfo {
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// Re-declares the methods that are in class MBeanInfo of JMX 1.0
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// (methods will be removed when MBeanInfo is made a parent interface of this interface)
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/**
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* Returns the fully qualified Java class name of the open MBean
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* instances this {@code OpenMBeanInfo} describes.
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*
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* @return the class name.
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*/
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public String getClassName() ;
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/**
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* Returns a human readable description of the type of open MBean
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* instances this {@code OpenMBeanInfo} describes.
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*
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* @return the description.
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*/
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public String getDescription() ;
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/**
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* Returns an array of {@code OpenMBeanAttributeInfo} instances
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* describing each attribute in the open MBean described by this
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* {@code OpenMBeanInfo} instance. Each instance in the returned
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* array should actually be a subclass of
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* {@code MBeanAttributeInfo} which implements the
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* {@code OpenMBeanAttributeInfo} interface (typically {@link
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* OpenMBeanAttributeInfoSupport}).
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*
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* @return the attribute array.
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*/
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public MBeanAttributeInfo[] getAttributes() ;
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/**
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* Returns an array of {@code OpenMBeanOperationInfo} instances
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* describing each operation in the open MBean described by this
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* {@code OpenMBeanInfo} instance. Each instance in the returned
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* array should actually be a subclass of
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* {@code MBeanOperationInfo} which implements the
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* {@code OpenMBeanOperationInfo} interface (typically {@link
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* OpenMBeanOperationInfoSupport}).
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*
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* @return the operation array.
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*/
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public MBeanOperationInfo[] getOperations() ;
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/**
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* Returns an array of {@code OpenMBeanConstructorInfo} instances
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* describing each constructor in the open MBean described by this
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* {@code OpenMBeanInfo} instance. Each instance in the returned
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* array should actually be a subclass of
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* {@code MBeanConstructorInfo} which implements the
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* {@code OpenMBeanConstructorInfo} interface (typically {@link
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* OpenMBeanConstructorInfoSupport}).
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*
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* @return the constructor array.
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*/
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public MBeanConstructorInfo[] getConstructors() ;
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/**
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* Returns an array of {@code MBeanNotificationInfo} instances
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* describing each notification emitted by the open MBean
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* described by this {@code OpenMBeanInfo} instance.
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*
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* @return the notification array.
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*/
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public MBeanNotificationInfo[] getNotifications() ;
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// commodity methods
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//
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/**
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* Compares the specified <var>obj</var> parameter with this {@code OpenMBeanInfo} instance for equality.
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* <p>
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* Returns {@code true} if and only if all of the following statements are true:
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* <ul>
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* <li><var>obj</var> is non null,</li>
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* <li><var>obj</var> also implements the {@code OpenMBeanInfo} interface,</li>
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* <li>their class names are equal</li>
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* <li>their infos on attributes, constructors, operations and notifications are equal</li>
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* </ul>
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* This ensures that this {@code equals} method works properly for <var>obj</var> parameters which are
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* different implementations of the {@code OpenMBeanInfo} interface.
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*
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* @param obj the object to be compared for equality with this {@code OpenMBeanInfo} instance;
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*
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* @return {@code true} if the specified object is equal to this {@code OpenMBeanInfo} instance.
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*/
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public boolean equals(Object obj);
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/**
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* Returns the hash code value for this {@code OpenMBeanInfo} instance.
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* <p>
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* The hash code of an {@code OpenMBeanInfo} instance is the sum of the hash codes
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* of all elements of information used in {@code equals} comparisons
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* (ie: its class name, and its infos on attributes, constructors, operations and notifications,
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* where the hashCode of each of these arrays is calculated by a call to
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* {@code new java.util.HashSet(java.util.Arrays.asList(this.getSignature)).hashCode()}).
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* <p>
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* This ensures that {@code t1.equals(t2)} implies that {@code t1.hashCode()==t2.hashCode()}
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* for any two {@code OpenMBeanInfo} instances {@code t1} and {@code t2},
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* as required by the general contract of the method
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* {@link Object#hashCode() Object.hashCode()}.
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*
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* @return the hash code value for this {@code OpenMBeanInfo} instance
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*/
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public int hashCode();
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/**
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* Returns a string representation of this {@code OpenMBeanInfo} instance.
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* <p>
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* The string representation consists of the name of this class
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* (ie {@code javax.management.openmbean.OpenMBeanInfo}), the MBean class name,
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* and the string representation of infos on attributes, constructors,
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* operations and notifications of the described MBean.
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*
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* @return a string representation of this {@code OpenMBeanInfo} instance
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*/
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public String toString();
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}
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