/*

 * Copyright (c) 2000, 2007, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package javax.management.openmbean;

// java import

//

// jmx import

//

/**

 * <p>Describes an attribute of an open MBean.</p>

 *

 * <p>This interface declares the same methods as the class {@link

 * javax.management.MBeanAttributeInfo}.  A class implementing this

 * interface (typically {@link OpenMBeanAttributeInfoSupport}) should

 * extend {@link javax.management.MBeanAttributeInfo}.</p>

 *

 *

 * @since 1.5

 */

public interface OpenMBeanAttributeInfo extends OpenMBeanParameterInfo {

    // Re-declares the methods that are in class MBeanAttributeInfo of JMX 1.0

    // (these will be removed when MBeanAttributeInfo is made a parent interface of this interface)

    /**

     * Returns <tt>true</tt> if the attribute described by this <tt>OpenMBeanAttributeInfo</tt> instance is readable,

     * <tt>false</tt> otherwise.

     *

     * @return true if the attribute is readable.

     */

    public boolean isReadable() ;

    /**

     * Returns <tt>true</tt> if the attribute described by this <tt>OpenMBeanAttributeInfo</tt> instance is writable,

     * <tt>false</tt> otherwise.

     *

     * @return true if the attribute is writable.

     */

    public boolean isWritable() ;

    /**

     * Returns <tt>true</tt> if the attribute described by this <tt>OpenMBeanAttributeInfo</tt> instance

     * is accessed through a <tt>is<i>XXX</i></tt> getter (applies only to <tt>boolean</tt> and <tt>Boolean</tt> values),

     * <tt>false</tt> otherwise.

     *

     * @return true if the attribute is accessed through <tt>is<i>XXX</i></tt>.

     */

    public boolean isIs() ;

    // commodity methods

    //

    /**

     * Compares the specified <var>obj</var> parameter with this <code>OpenMBeanAttributeInfo</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>OpenMBeanAttributeInfo</code> interface,</li>

     * <li>their names are equal</li>

     * <li>their open types are equal</li>

     * <li>their access properties (isReadable, isWritable and isIs) are equal</li>

     * <li>their default, min, max and legal values 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>OpenMBeanAttributeInfo</code> interface.

     * <br>&nbsp;

     * @param  obj  the object to be compared for equality with this <code>OpenMBeanAttributeInfo</code> instance;

     *

     * @return  <code>true</code> if the specified object is equal to this <code>OpenMBeanAttributeInfo</code> instance.

     */

    public boolean equals(Object obj);

    /**

     * Returns the hash code value for this <code>OpenMBeanAttributeInfo</code> instance.

     * <p>

     * The hash code of an <code>OpenMBeanAttributeInfo</code> instance is the sum of the hash codes

     * of all elements of information used in <code>equals</code> comparisons

     * (ie: its name, its <i>open type</i>, and its default, min, max and legal values).

     * <p>

     * This ensures that <code> t1.equals(t2) </code> implies that <code> t1.hashCode()==t2.hashCode() </code>

     * for any two <code>OpenMBeanAttributeInfo</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>OpenMBeanAttributeInfo</code> instance

     */

    public int hashCode();

    /**

     * Returns a string representation of this <code>OpenMBeanAttributeInfo</code> instance.

     * <p>

     * The string representation consists of the name of this class (ie <code>javax.management.openmbean.OpenMBeanAttributeInfo</code>),

     * the string representation of the name and open type of the described attribute,

     * and the string representation of its default, min, max and legal values.

     *

     * @return  a string representation of this <code>OpenMBeanAttributeInfo</code> instance

     */

    public String toString();

    // methods specific to open MBeans are inherited from

    // OpenMBeanParameterInfo

    //

}