|
1
23
24
29
30
31 package com.sun.cli.jmx.cmd;
32
33 import java.util.Properties  ;
34 import java.util.Iterator ;
35 import java.util.Enumeration ;
36 import java.io.File ;
37 import java.io.FileInputStream ;
38 import java.io.FileOutputStream ;
39 import java.io.FileNotFoundException ;
40 import java.io.IOException ;
41
42 class ValueData
43 {
44 Object mValue;
45 boolean mAllowPersistence;
46
47 ValueData( Object value )
48 {
49 mValue = value;
50 mAllowPersistence = false;
51 }
52
53 ValueData( Object value, boolean allowPersistence )
54 {
55 mValue = value;
56 mAllowPersistence = allowPersistence;
57 }
58 }
59
60 public final class CmdEnvImpl implements CmdEnv
61 {
62 private final java.util.HashMap mEnv;
63
64
65 private final static void
66 dm( Object o )
67 {
68 System.out.println( o.toString() );
69 }
70
71 public
72 CmdEnvImpl()
73 {
74 mEnv = new java.util.HashMap ();
75 }
76
77 public void
78 put( String key, Object value, boolean allowPersistence )
79 {
80 final ValueData data = new ValueData( value, allowPersistence);
81
82 mEnv.put( key, data );
83 }
84
85 public Object
86 get( String key )
87 {
88 final ValueData data = (ValueData)mEnv.get( key );
89 final Object value = (data != null) ? data.mValue : null;
90
91 return( value );
92 }
93
94 public void
95 remove( String key )
96 {
97 mEnv.remove( key );
98 }
99
100 public java.util.Set
101 getKeys()
102 {
103 return( mEnv.keySet( ) );
104 }
105
106 public boolean
107 isPersistable( String key )
108 {
109 final ValueData data = (ValueData)mEnv.get( key );
110 final boolean isPersistable = data != null && data.mAllowPersistence;
111
112 return( isPersistable );
113 }
114
115 Properties
116 exportProperties( )
117 {
118 final Properties props = new Properties ();
119
120 final Iterator iter = getKeys().iterator();
121 while( iter.hasNext() )
122 {
123 final String key = (String )iter.next();
124
125 if ( isPersistable( key ) )
126 {
127 props.put( key, get( key ).toString() );
128 }
129 }
130
131 return( props );
132 }
133
134 void
135 importProperties( Properties props )
136 {
137 final Enumeration propertyNames = props.propertyNames();
138
139 while ( propertyNames.hasMoreElements() )
140 {
141 final String name = (String )propertyNames.nextElement();
142 final String value = props.getProperty( name );
143
144 put( name, value, true );
145 }
146 }
147
148 private final static String HEADER = "jmxadmin environment properties";
149
150 void
151 load( File file )
152 throws IOException
153 {
154 FileInputStream inputStream = null;
155
156 try
157 {
158 inputStream = new FileInputStream ( file );
159
160 final Properties props = new Properties ();
161 props.load( inputStream );
162 inputStream.close();
163
164 importProperties( props );
165 }
166 catch( FileNotFoundException e )
167 {
168 if ( inputStream != null )
170 {
171 inputStream.close();
172 }
173 }
174 }
175
176 void
177 store( File file )
178 throws FileNotFoundException , IOException
179 {
180 final Properties props = exportProperties( );
181
182 FileOutputStream outputStream = null;
183
184 try
185 {
186 outputStream = new FileOutputStream ( file );
187 props.store( outputStream, HEADER );
188 outputStream.close();
189 }
190 catch( Exception e )
191 {
192 System.err.println( "can't store environment" );
193 }
194 finally
195 {
196 if ( outputStream != null )
197 {
198 outputStream.close();
199 }
200 }
201 }
202
203 };
204
205
206
207
208
209 |
Popular Tags |
Java API By Example, From Geeks To Geeks.