01: /*_############################################################################
02: _##
03: _## SNMP4J-AgentJMX - EnumBitsType.java
04: _##
05: _## Copyright (C) 2006-2007 Frank Fock (SNMP4J.org)
06: _##
07: _## This program is free software; you can redistribute it and/or modify
08: _## it under the terms of the GNU General Public License version 2 as
09: _## published by the Free Software Foundation.
10: _##
11: _## This program is distributed in the hope that it will be useful,
12: _## but WITHOUT ANY WARRANTY; without even the implied warranty of
13: _## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14: _## GNU General Public License for more details.
15: _##
16: _## You should have received a copy of the GNU General Public License
17: _## along with this program; if not, write to the Free Software
18: _## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
19: _## MA 02110-1301 USA
20: _##
21: _##########################################################################*/
22: package org.snmp4j.agent.mo.jmx.types;
23:
24: import org.snmp4j.smi.OctetString;
25: import javax.management.*;
26:
27: public class EnumBitsType extends TypedAttribute {
28:
29: private Enum[] enumValues;
30: private Class enumClass;
31: private int offset = 0;
32:
33: public EnumBitsType(String name, Class enumClass, Enum[] enumValues) {
34: super (name, byte[].class);
35: this .enumClass = enumClass;
36: this .enumValues = enumValues;
37: }
38:
39: public EnumBitsType(String name, Class enumClass,
40: Enum[] enumValues, int offset) {
41: this (name, enumClass, enumValues);
42: this .offset = offset;
43: }
44:
45: public int getOffset() {
46: return offset;
47: }
48:
49: public Object transformFromNative(Object nativeValue,
50: ObjectName objectName) {
51: Enum en;
52: if (nativeValue instanceof Enum) {
53: en = (Enum) nativeValue;
54: } else {
55: en = Enum.valueOf(enumClass, nativeValue.toString());
56: }
57: int o = offset + en.ordinal();
58: StringBuffer buf = new StringBuffer("1");
59: for (int i = 0; i < o; i++) {
60: buf.insert(0, "0");
61: }
62: while (buf.length() % 8 > 0) {
63: buf.append("0");
64: }
65: return OctetString.fromString(buf.toString(), 2).toByteArray();
66: }
67:
68: public Object transformToNative(Object transformedValue,
69: Object oldNativeValue, ObjectName objectName) {
70: OctetString os = new OctetString((byte[]) transformedValue);
71: String s = os.toString(2);
72: int pos = s.indexOf("1");
73: if (pos < 0) {
74: return null;
75: }
76: pos -= offset;
77: return enumValues[pos];
78: }
79:
80: }
|