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1
23
24
29
30 package com.sun.enterprise.management.support;
31
32 import java.util.Set  ;
33
34 import javax.management.ObjectName ;
35 import javax.management.MBeanServer ;
36 import javax.management.Attribute ;
37 import javax.management.AttributeList ;
38 import javax.management.InstanceNotFoundException ;
39 import javax.management.AttributeNotFoundException ;
40 import javax.management.InvalidAttributeValueException ;
41 import javax.management.ReflectionException ;
42 import javax.management.MBeanException ;
43 import javax.management.MBeanParameterInfo ;
44 import javax.management.MBeanOperationInfo ;
45
46 import com.sun.appserv.management.base.AMXDebug;
47
48 import com.sun.appserv.management.util.jmx.JMXUtil;
49 import com.sun.appserv.management.util.misc.ArrayConversion;
50 import com.sun.appserv.management.util.misc.Output;
51
52
55 public abstract class DelegateBase implements Delegate
56 {
57 private Set mAttributeNames;
58 private DelegateOwner mOwner;
59 private Output mDebug;
60 private final String mID;
61
62
65 protected void
66 unimplementedOperation( String operation )
67 {
68 debug( "unimplemented operation: " + operation );
69 throw new UnsupportedOperationException ( operation );
70 }
71
72 public
73 DelegateBase( final String id, DelegateOwner owner )
74 {
75 mID = id;
76 mAttributeNames = null;
77 mOwner = owner;
78 mDebug = null;
79 }
80
81 public void
82 setDebugOutput( final Output debugOutput )
83 {
84 mDebug = debugOutput;
85 }
86
87 protected final void
88 debug(final Object o)
89 {
90 if ( mDebug != null )
91 {
92 mDebug.println( o );
93 }
94 }
95
96
97 public final String getID() { return mID; }
98
99 public void
100 setOwner( final DelegateOwner owner )
101 {
102 mOwner = owner;
103 }
104
105 public DelegateOwner
106 getOwner()
107 {
108 return( mOwner );
109 }
110
111
115 public AttributeList
116 getAttributes( final String [] attrNames )
117 {
118 final AttributeList attrs = new AttributeList ();
119
120 for( int i = 0; i < attrNames.length; ++i )
121 {
122 try
123 {
124 final String attrName = attrNames[ i ];
125
126 final Attribute attr =
127 new Attribute ( attrName, getAttribute( attrName ) );
128 attrs.add( attr );
129 }
130 catch( Exception e )
131 {
132 }
134 }
135
136 return( attrs );
137 }
138
139
140
144 public AttributeList
145 setAttributes( final AttributeList attrs )
146 {
147 final int numAttrs = attrs.size();
148 final AttributeList successList = new AttributeList ();
149
150 for( int i = 0; i < numAttrs; ++i )
151 {
152 final Attribute attr = (Attribute )attrs.get( i );
153 try
154 {
155 setAttribute( attr );
156
157 successList.add( attr );
158 }
159 catch( AttributeNotFoundException e )
160 {
161 }
163 catch( InvalidAttributeValueException e )
164 {
165 }
167 }
168 return( successList );
169 }
170
171
172
173
176 private boolean
177 typesMatch(
178 final String [] types,
179 final MBeanParameterInfo [] paramInfos )
180 {
181 boolean matches = false;
182 final int numTypes = types == null ? 0 : types.length;
183 final int numParams = paramInfos == null ? 0 : paramInfos.length;
184
185 if ( numTypes == numParams )
186 {
187 matches = true;
188
189 for( int i = 0; i < numTypes; ++i )
190 {
191 if ( ! types[ i ].equals( paramInfos[ i ].getType() ) )
192 {
193 matches = false;
194 break;
195 }
196 }
197 }
198
199 return( matches );
200 }
201
202 public synchronized boolean
203 supportsAttribute( String attrName )
204 {
205 if ( mAttributeNames == null )
206 {
207 final String [] attrNames =
208 JMXUtil.getAttributeNames( getMBeanInfo().getAttributes() );
209
210 mAttributeNames = ArrayConversion.arrayToSet( attrNames );
211 }
212
213 return( mAttributeNames.contains( attrName ) );
214 }
215
216 public boolean
217 supportsOperation(
218 String operationName,
219 Object [] args,
220 String [] types )
221 {
222 boolean supports = false;
223
224 final MBeanOperationInfo [] opInfos = getMBeanInfo().getOperations();
225
226 for( int i = 0; i < opInfos.length; ++i )
227 {
228 final MBeanOperationInfo info = opInfos[ i ];
229
230 if ( info.getName().equals( operationName ) )
231 {
232 if ( typesMatch( types, info.getSignature() ) )
233 {
234 supports = true;
235 break;
236 }
237 }
238 }
239
240 return( supports );
241 }
242
243 }
244
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