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1
9 package org.jboss.portal.common.mx;
10
11 import java.beans.BeanInfo  ;
12 import java.beans.Introspector ;
13 import java.beans.MethodDescriptor ;
14 import java.beans.PropertyDescriptor ;
15 import java.lang.reflect.Method ;
16 import java.util.ArrayList ;
17 import java.util.HashMap ;
18 import java.util.Map ;
19
20 import javax.management.Descriptor ;
21 import javax.management.modelmbean.ModelMBeanAttributeInfo ;
22 import javax.management.modelmbean.ModelMBeanConstructorInfo ;
23 import javax.management.modelmbean.ModelMBeanInfo ;
24 import javax.management.modelmbean.ModelMBeanInfoSupport ;
25 import javax.management.modelmbean.ModelMBeanNotificationInfo ;
26 import javax.management.modelmbean.ModelMBeanOperationInfo ;
27
28 import org.apache.log4j.Logger;
29
30
34 public class JavaBeanModelMBeanBuilder
35 {
36
37 private final static String CURRENCY_TIME_LIMIT = "currencyTimeLimit";
38 private final static String GET_METHOD = "getMethod";
39 private final static String SET_METHOD = "setMethod";
40 private final static String PERSIST_POLICY = "persistPolicy";
41 private final static String ROLE = "role";
42
43 private static final Logger log = Logger.getLogger(JavaBeanModelMBeanBuilder.class);
44
45 private ArrayList mmais;
46 private ArrayList mmois;
47 private Class from;
48 private Class to;
49
50 public JavaBeanModelMBeanBuilder(Class from, Class to) throws Exception
51 {
52 BeanInfo info = Introspector.getBeanInfo(from, to);
54
55 this.from = from;
57 this.to = to;
58 this.mmais = new ArrayList (info.getPropertyDescriptors().length);
59 this.mmois = new ArrayList (info.getMethodDescriptors().length);
60
61 Map roles = new HashMap ();
63
64 PropertyDescriptor [] propertyDescs = info.getPropertyDescriptors();
66 for (int i = 0;i < propertyDescs.length;i++)
67 {
68 PropertyDescriptor propertyDesc = propertyDescs[i];
69 String name = Character.toUpperCase(propertyDesc.getName().charAt(0)) + propertyDesc.getName().substring(1);
70 Method getter = propertyDesc.getReadMethod();
71 Method setter = propertyDesc.getWriteMethod();
72
73 if (getter != null)
75 {
76 roles.put(getter, "getter");
77 }
78 if (setter != null)
79 {
80 roles.put(setter, "setter");
81 }
82
83 ModelMBeanAttributeInfo mmai = new ModelMBeanAttributeInfo (
85 name,
86 "Javabean introspected attribute",
87 getter,
88 setter);
89
90 Descriptor desc = mmai.getDescriptor();
92 desc.setField(CURRENCY_TIME_LIMIT, "0");
93 desc.setField(PERSIST_POLICY, "Never");
94 if (getter != null)
95 {
96 desc.setField(GET_METHOD, getter.getName());
97 }
98 if (setter != null)
99 {
100 desc.setField(SET_METHOD, setter.getName());
101 }
102 mmai.setDescriptor(desc);
103
104 mmais.add(mmai);
106 }
107
108 MethodDescriptor [] methodDescs = info.getMethodDescriptors();
110 for (int i = 0;i < methodDescs.length;i++)
111 {
112 MethodDescriptor methodDesc = methodDescs[i];
113 Method method = methodDesc.getMethod();
114
115 ModelMBeanOperationInfo mmoi = new ModelMBeanOperationInfo ("Javabean introspected method", method);
117
118 Descriptor desc = mmoi.getDescriptor();
120 String role = (String )roles.get(method);
121 desc.setField(ROLE, role != null ? role : "operation");
122 mmoi.setDescriptor(desc);
123
124 mmois.add(mmoi);
126 }
127 }
128
129
132 public void remove(Class itf)
133 {
134 throw new UnsupportedOperationException ("To be implemented if usefull, just a placeholder now");
135 }
136
137
140 public ModelMBeanInfo getInfo()
141 {
142 return new ModelMBeanInfoSupport (
143 from.getName(),
144 "Javabean model mbean",
145 (ModelMBeanAttributeInfo [])mmais.toArray(new ModelMBeanAttributeInfo [mmais.size()]),
146 new ModelMBeanConstructorInfo [0],
147 (ModelMBeanOperationInfo [])mmois.toArray(new ModelMBeanOperationInfo [mmois.size()]),
148 new ModelMBeanNotificationInfo [0]
149 );
150 }
151
152 public static final ModelMBeanInfo build(Class from, Class to) throws Exception
153 {
154 return new JavaBeanModelMBeanBuilder(from, to).getInfo();
155 }
156
157 public static final ModelMBeanInfo build(Object o) throws Exception
158 {
159 return new JavaBeanModelMBeanBuilder(o.getClass(), Object .class).getInfo();
160 }
161
162
163 }
164 |
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