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30
31 package com.sun.enterprise.admin.dottedname.valueaccessor;
32
33 import java.lang.reflect.Array  ;
34
35 import javax.management.MBeanServerConnection ;
36 import javax.management.IntrospectionException ;
37 import javax.management.ReflectionException ;
38 import javax.management.InstanceNotFoundException ;
39 import javax.management.AttributeList ;
40 import javax.management.MBeanInfo ;
41 import javax.management.MBeanAttributeInfo ;
42 import javax.management.ObjectName ;
43 import javax.management.Attribute ;
44
45 import com.sun.enterprise.admin.util.ClassUtil;
46 import com.sun.enterprise.admin.util.Tokenizer;
47 import com.sun.enterprise.admin.util.TokenizerImpl;
48
49
50 abstract class ValueAccessorBase implements ValueAccessor
51 {
52 final MBeanServerConnection mConn;
53
54
55 MBeanServerConnection
56 getMBS()
57 {
58 return( mConn );
59 }
60
61 public
62 ValueAccessorBase( MBeanServerConnection conn )
63 {
64 mConn = conn;
65 }
66
67 final char ARRAY_ELEMENT_SEPARATOR = ',';
68 final char ESCAPE_CHAR = '\\';
69
70 String []
71 stringToStringArray( final String s )
72 throws com.sun.enterprise.admin.util.TokenizerException
73 {
74 final String delimiters = "" + ARRAY_ELEMENT_SEPARATOR;
75 final String escapableChars = "" + ARRAY_ELEMENT_SEPARATOR + ESCAPE_CHAR;
76
77 final Tokenizer tok = new TokenizerImpl( s, delimiters, false, ESCAPE_CHAR, escapableChars );
78
79 final String [] values = tok.getTokens();
80
81 return( values );
82 }
83
84 Object []
85 convert( final String [] stringValues, final Class elementClass )
86 throws Exception
87 {
88 if ( elementClass == String .class )
89 {
90 return( stringValues );
91 }
92
93 if ( ClassUtil.classnameIsPrimitiveArray( elementClass.getName() ) )
94 {
95 throw new IllegalArgumentException ( );
96 }
97
98 final Object [] values = (Object [])Array.newInstance( elementClass, stringValues.length );
99
100 for( int i = 0; i < values.length; ++i )
101 {
102 values[ i ] = ClassUtil.InstantiateFromString( elementClass, stringValues[ i ] );
103 }
104
105 return( values );
106 }
107
108 Object []
109 stringToArray( final String s, final Class elementClass )
110 throws Exception
111 {
112 final String [] stringValues = stringToStringArray( s );
113
114 final Object [] values = convert( stringValues, elementClass );
115
116 return( values );
117 }
118
119
120 Object
121 coerceToClass( final Class theClass, String value )
122 throws Exception
123 {
124 Object result = value;
125
126 if ( theClass != String .class )
127 {
128 if ( ClassUtil.classIsArray( theClass ) )
129 {
130 final String theClassName = theClass.getName();
131 final String elementClassName = ClassUtil.getArrayMemberClassName( theClassName );
132
133 result = stringToArray( value, ClassUtil.getClassFromName( elementClassName ) );
135 }
136 else
137 {
138 boolean canCoerce = true;
139
140 final Class resultClass = ClassUtil.PrimitiveClassToObjectClass( theClass );
141
142 if ( resultClass == Boolean .class )
143 {
144 canCoerce = value.equalsIgnoreCase( "true" ) || value.equalsIgnoreCase( "false" );
146 }
147
148 if ( canCoerce )
149 {
150 result = ClassUtil.InstantiateFromString( resultClass, value );
151 }
152 }
153 }
154 return( result );
155 }
156
157 public abstract Attribute getValue( ObjectName objectName, String valueName ) throws Exception ;
158 public abstract Attribute setValue( ObjectName objectName, Attribute attr ) throws Exception ;
159 }
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166 |
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