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1
20
21 package org.snmp4j.smi;
22
23 import org.snmp4j.asn1.BERInputStream;
24 import java.io.IOException  ;
25 import java.io.OutputStream ;
26
27
45 public class VariantVariable extends AbstractVariable implements
46 AssignableFromInteger,
47 AssignableFromLong,
48 AssignableFromString,
49 AssignableFromByteArray {
50
51 private static final long serialVersionUID = -3678564678835871188L;
52
53 private Variable variable;
54 private VariantVariableCallback callback;
55
56
61 public VariantVariable(Variable initialVariable) {
62 if (initialVariable == null) {
63 throw new NullPointerException ();
64 }
65 this.variable = initialVariable;
66 }
67
68
77 public VariantVariable(Variable initialVariable,
78 VariantVariableCallback callback) {
79 this(initialVariable);
80 this.callback = callback;
81 }
82
83 public synchronized int compareTo(Object o) {
84 updateVariable();
85 return variable.compareTo(o);
86 }
87
88 protected void updateVariable() {
89 if (callback != null) {
90 callback.updateVariable(this);
91 }
92 }
93
94 protected void variableUpdated() {
95 if (callback != null) {
96 callback.variableUpdated(this);
97 }
98 }
99
100 public synchronized void decodeBER(BERInputStream inputStream) throws IOException {
101 variable.decodeBER(inputStream);
102 variableUpdated();
103 }
104
105 public synchronized void encodeBER(OutputStream outputStream) throws IOException {
106 updateVariable();
107 variable.encodeBER(outputStream);
108 }
109
110 public synchronized void fromSubIndex(OID subIndex, boolean impliedLength) {
111 variable.fromSubIndex(subIndex, impliedLength);
112 variableUpdated();
113 }
114
115 public synchronized int getBERLength() {
116 updateVariable();
117 return variable.getBERLength();
118 }
119
120 public int getSyntax() {
121 return variable.getSyntax();
122 }
123
124 public synchronized int toInt() {
125 updateVariable();
126 return variable.toInt();
127 }
128
129 public synchronized long toLong() {
130 updateVariable();
131 return variable.toLong();
132 }
133
134 public synchronized byte[] toByteArray() {
135 updateVariable();
136 if (variable instanceof AssignableFromByteArray) {
137 return ((AssignableFromByteArray)variable).toByteArray();
138 }
139 throw new UnsupportedOperationException ();
140 }
141
142 public synchronized OID toSubIndex(boolean impliedLength) {
143 updateVariable();
144 return variable.toSubIndex(impliedLength);
145 }
146
147 public synchronized boolean equals(Object o) {
148 updateVariable();
149 return variable.equals(o);
150 }
151
152 public synchronized int hashCode() {
153 updateVariable();
154 return variable.hashCode();
155 }
156
157 public synchronized String toString() {
158 updateVariable();
159 return variable.toString();
160 }
161
162 public Object clone() {
163 return new VariantVariable((Variable)variable.clone());
164 }
165
166 public synchronized void setValue(int value) {
167 if (variable instanceof AssignableFromInteger) {
168 ((AssignableFromInteger)variable).setValue(value);
169 }
170 else {
171 throw new ClassCastException ("An integer value cannot be assigned to "+
172 variable);
173 }
174 }
175
176 public synchronized void setValue(long value) {
177 if (variable instanceof AssignableFromLong) {
178 ((AssignableFromLong)variable).setValue(value);
179 }
180 else {
181 throw new ClassCastException ("A long value cannot be assigned to "+
182 variable);
183 }
184 }
185
186 public synchronized void setValue(OctetString value) {
187 if (variable instanceof AssignableFromByteArray) {
188 ((AssignableFromByteArray)variable).setValue(value.getValue());
189 }
190 else {
191 throw new ClassCastException ("An OctetString value cannot be assigned to "+
192 variable);
193 }
194 }
195
196 public synchronized void setValue(byte[] value) {
197 if (variable instanceof AssignableFromByteArray) {
198 ((AssignableFromByteArray)variable).setValue(value);
199 }
200 else {
201 throw new ClassCastException ("A byte array value cannot be assigned to "+
202 variable);
203 }
204 }
205
206 public synchronized void setValue(String value) {
207 if (variable instanceof AssignableFromString) {
208 ((AssignableFromString)variable).setValue(value);
209 }
210 else {
211 throw new ClassCastException ("A string value cannot be assigned to "+
212 variable);
213 }
214 }
215
216
221 public Variable getVariable() {
222 return variable;
223 }
224
225 public boolean isDynamic() {
226 return true;
227 }
228
229 }
230 |
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