Java example source code file (ModelMBeanInfo.java)

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Java - Java tags/keywords

descriptor, management, mbeanattributeinfo, mbeanconstructorinfo, mbeanexception, mbeannotificationinfo, modelmbeanattributeinfo, modelmbeaninfo, modelmbeannotificationinfo, modelmbeanoperationinfo, runtimeoperationsexception, string

The ModelMBeanInfo.java Java example source code

/*
 * Copyright (c) 2000, 2013, 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.
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/*
 * @author    IBM Corp.
 *
 * Copyright IBM Corp. 1999-2000.  All rights reserved.
 */

package javax.management.modelmbean;

import javax.management.Descriptor;
import javax.management.MBeanAttributeInfo;
import javax.management.MBeanConstructorInfo;
import javax.management.RuntimeOperationsException;
import javax.management.MBeanException;
import javax.management.MBeanNotificationInfo;
import javax.management.MBeanOperationInfo;

/**
 * This interface is implemented by the ModelMBeanInfo for every ModelMBean. An implementation of this interface
 * must be shipped with every JMX Agent.
 * <P>
 * Java resources wishing to be manageable instantiate the ModelMBean using the MBeanServer's
 * createMBean method.  The resource then sets the ModelMBeanInfo and Descriptors for the ModelMBean
 * instance. The attributes, operations, and notifications exposed via the ModelMBeanInfo for the
 * ModelMBean comprise the management interface and are accessible
 * from MBeans, connectors/adaptors like other MBeans. Through the Descriptors, values and methods in
 * the managed application can be defined and mapped to attributes and operations of the ModelMBean.
 * This mapping can be defined during development in a file or dynamically and
 * programmatically at runtime.
 * <P>
 * Every ModelMBean which is instantiated in the MBeanServer becomes manageable:
 * its attributes, operations, and notifications
 * become remotely accessible through the connectors/adaptors connected to that MBeanServer.
 * A Java object cannot be registered in the MBeanServer unless it is a JMX compliant MBean.
 * By instantiating a ModelMBean, resources are guaranteed that the MBean is valid.
 *
 * MBeanException and RuntimeOperationsException must be thrown on every public method.  This allows
 *  for wrapping exceptions from distributed communications (RMI, EJB, etc.)
 *
 * @since 1.5
 */

public interface ModelMBeanInfo
{


    /**
     * Returns a Descriptor array consisting of all
     * Descriptors for the ModelMBeanInfo of type inDescriptorType.
     *
     * @param inDescriptorType value of descriptorType field that must be set for the descriptor
     * to be returned.  Must be "mbean", "attribute", "operation", "constructor" or "notification".
     * If it is null or empty then all types will be returned.
     *
     * @return Descriptor array containing all descriptors for the ModelMBean if type inDescriptorType.
     *
     * @exception MBeanException Wraps a distributed communication Exception.
     * @exception RuntimeOperationsException Wraps an IllegalArgumentException when the descriptorType in parameter is
     * not one of: "mbean", "attribute", "operation", "constructor", "notification", empty or null.
     *
     * @see #setDescriptors
     */
    public Descriptor[] getDescriptors(String inDescriptorType)
            throws MBeanException, RuntimeOperationsException;

    /**
     * Adds or replaces descriptors in the ModelMBeanInfo.
     *
     * @param inDescriptors The descriptors to be set in the ModelMBeanInfo. Null
     * elements of the list will be ignored.  All descriptors must have name and descriptorType fields.
     *
     * @exception RuntimeOperationsException Wraps an IllegalArgumentException for a null or invalid descriptor.
     * @exception MBeanException Wraps a distributed communication Exception.
     *
     * @see #getDescriptors
     */
    public void setDescriptors(Descriptor[] inDescriptors)
            throws MBeanException, RuntimeOperationsException;

    /**
     * Returns a Descriptor requested by name and descriptorType.
     *
     * @param inDescriptorName The name of the descriptor.
     * @param inDescriptorType The type of the descriptor being
     * requested.  If this is null or empty then all types are
     * searched. Valid types are 'mbean', 'attribute', 'constructor'
     * 'operation', and 'notification'. This value will be equal to
     * the 'descriptorType' field in the descriptor that is returned.
     *
     * @return Descriptor containing the descriptor for the ModelMBean
     * with the same name and descriptorType.  If no descriptor is
     * found, null is returned.
     *
     * @exception MBeanException Wraps a distributed communication Exception.
     * @exception RuntimeOperationsException Wraps an IllegalArgumentException for a null descriptor name or null or invalid type.
     * The type must be "mbean","attribute", "constructor", "operation", or "notification".
     *
     * @see #setDescriptor
     */

    public Descriptor getDescriptor(String inDescriptorName, String inDescriptorType)
            throws MBeanException, RuntimeOperationsException;

    /**
     * Sets descriptors in the info array of type inDescriptorType
     * for the ModelMBean.  The setDescriptor method of the
     * corresponding ModelMBean*Info will be called to set the
     * specified descriptor.
     *
     * @param inDescriptor The descriptor to be set in the
     * ModelMBean. It must NOT be null.  All descriptors must have
     * name and descriptorType fields.
     * @param inDescriptorType The type of the descriptor being
     * set. If this is null then the descriptorType field in the
     * descriptor is used. If specified this value must be set in
     * the descriptorType field in the descriptor. Must be
     * "mbean","attribute", "constructor", "operation", or
     * "notification".
     *
     * @exception RuntimeOperationsException Wraps an
     * IllegalArgumentException for illegal or null arguments or
     * if the name field of the descriptor is not found in the
     * corresponding MBeanAttributeInfo or MBeanConstructorInfo or
     * MBeanNotificationInfo or MBeanOperationInfo.
     * @exception MBeanException Wraps a distributed communication
     * Exception.
     *
     * @see #getDescriptor
     */

    public void setDescriptor(Descriptor inDescriptor, String inDescriptorType)
            throws MBeanException, RuntimeOperationsException;


    /**
     * <p>Returns the ModelMBean's descriptor which contains MBean wide
     * policies.  This descriptor contains metadata about the MBean and default
     * policies for persistence and caching.</p>
     *
     * <P id="descriptor">
     * 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.</P>
     *
     * <table border="1" cellpadding="5" summary="ModelMBean Fields">
     * <tr>