01: /*
02: * JBoss, Home of Professional Open Source.
03: * Copyright 2006, Red Hat Middleware LLC, and individual contributors
04: * as indicated by the @author tags. See the copyright.txt file in the
05: * distribution for a full listing of individual contributors.
06: *
07: * This is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU Lesser General Public License as
09: * published by the Free Software Foundation; either version 2.1 of
10: * the License, or (at your option) any later version.
11: *
12: * This software is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15: * Lesser General Public License for more details.
16: *
17: * You should have received a copy of the GNU Lesser General Public
18: * License along with this software; if not, write to the Free
19: * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20: * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21: */
22: package javax.management;
23:
24: import java.io.IOException;
25: import java.io.ObjectInputStream;
26: import java.io.ObjectOutputStream;
27: import java.io.ObjectStreamField;
28:
29: /**
30: * A numeric that is an arguement to a query.
31: *
32: * @author Adrian.Brock@jboss.com
33: * @version $Revision: 57200 $
34: */
35: class NumericValueExp extends QueryEval implements ValueExp {
36: // Constants ---------------------------------------------------
37:
38: private static final long serialVersionUID = -4679739485102359104L;
39: private static final ObjectStreamField[] serialPersistentFields;
40:
41: // Attributes --------------------------------------------------
42:
43: private Number val;
44:
45: // Static -----------------------------------------------------
46:
47: static {
48: serialPersistentFields = new ObjectStreamField[] { new ObjectStreamField(
49: "val", Number.class), };
50: }
51:
52: // Constructors ------------------------------------------------
53:
54: public NumericValueExp() {
55: this .val = new Double(0.0);
56: }
57:
58: public NumericValueExp(Number value) {
59: this .val = value;
60: }
61:
62: // Public ------------------------------------------------------
63:
64: public boolean isInteger() {
65: return val instanceof Integer || val instanceof Long;
66: }
67:
68: public double getLongValue() {
69: return val.longValue();
70: }
71:
72: public double getDoubleValue() {
73: return val.doubleValue();
74: }
75:
76: // ValueExp implementation -------------------------------------
77:
78: public ValueExp apply(ObjectName name)
79: throws BadStringOperationException,
80: BadBinaryOpValueExpException,
81: BadAttributeValueExpException, InvalidApplicationException {
82: return this ;
83: }
84:
85: // Object overrides --------------------------------------------
86:
87: public String toString() {
88: return val.toString();
89: }
90:
91: private void readObject(ObjectInputStream ois) throws IOException,
92: ClassNotFoundException {
93: ois.defaultReadObject();
94: }
95:
96: private void writeObject(ObjectOutputStream oos) throws IOException {
97: oos.defaultWriteObject();
98: }
99: }
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