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Java > Open Source Codes > org > apache > commons > modeler > NotificationInfo


1 /*
2  * Copyright 1999,2004 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16
17
18 package org.apache.commons.modeler;
19
20
21 import java.io.Serializable JavaDoc;
22
23 import javax.management.Descriptor JavaDoc;
24 import javax.management.modelmbean.ModelMBeanNotificationInfo JavaDoc;
25
26
27 /**
28  * <p>Internal configuration information for a <code>Notification</code>
29  * descriptor.</p>
30  *
31  * @author Craig R. McClanahan
32  * @version $Revision$ $Date: 2005-02-26 05:12:25 -0800 (Sat, 26 Feb 2005) $
33  */
34
35 public class NotificationInfo extends FeatureInfo implements Serializable JavaDoc {
36     static final long serialVersionUID = -6319885418912650856L;
37
38     // ----------------------------------------------------- Instance Variables
39
40
41     /**
42      * The <code>ModelMBeanNotificationInfo</code> object that corresponds
43      * to this <code>NotificationInfo</code> instance.
44      */
45     transient ModelMBeanNotificationInfo JavaDoc info = null;
46     protected String JavaDoc notifTypes[] = new String JavaDoc[0];
47
48     // ------------------------------------------------------------- Properties
49
50
51     /**
52      * Override the <code>description</code> property setter.
53      *
54      * @param description The new description
55      */
56     public void setDescription(String JavaDoc description) {
57         super.setDescription(description);
58         this.info = null;
59     }
60
61
62     /**
63      * Override the <code>name</code> property setter.
64      *
65      * @param name The new name
66      */
67     public void setName(String JavaDoc name) {
68         super.setName(name);
69         this.info = null;
70     }
71
72
73     /**
74      * The set of notification types for this MBean.
75      */
76     public String JavaDoc[] getNotifTypes() {
77         return (this.notifTypes);
78     }
79
80
81     // --------------------------------------------------------- Public Methods
82
83
84     /**
85      * Add a new notification type to the set managed by an MBean.
86      *
87      * @param notifType The new notification type
88      */
89     public void addNotifType(String JavaDoc notifType) {
90
91         synchronized (notifTypes) {
92             String JavaDoc results[] = new String JavaDoc[notifTypes.length + 1];
93             System.arraycopy(notifTypes, 0, results, 0, notifTypes.length);
94             results[notifTypes.length] = notifType;
95             notifTypes = results;
96             this.info = null;
97         }
98
99     }
100
101
102     /**
103      * Create and return a <code>ModelMBeanNotificationInfo</code> object that
104      * corresponds to the attribute described by this instance.
105      */
106     public ModelMBeanNotificationInfo JavaDoc createNotificationInfo() {
107
108         // Return our cached information (if any)
109 if (info != null)
110             return (info);
111
112         // Create and return a new information object
113 info = new ModelMBeanNotificationInfo JavaDoc
114             (getNotifTypes(), getName(), getDescription());
115         Descriptor JavaDoc descriptor = info.getDescriptor();
116         addFields(descriptor);
117         info.setDescriptor(descriptor);
118         return (info);
119
120     }
121
122
123     /**
124      * Return a string representation of this notification descriptor.
125      */
126     public String JavaDoc toString() {
127
128         StringBuffer JavaDoc sb = new StringBuffer JavaDoc("NotificationInfo[");
129         sb.append("name=");
130         sb.append(name);
131         sb.append(", description=");
132         sb.append(description);
133         sb.append(", notifTypes=");
134         sb.append(notifTypes.length);
135         sb.append("]");
136         return (sb.toString());
137
138     }
139
140
141 }
142
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