001 /* StringValueExp.java -- Represents strings to be passed to queries.
002 Copyright (C) 2007 Free Software Foundation, Inc.
003
004 This file is part of GNU Classpath.
005
006 GNU Classpath is free software; you can redistribute it and/or modify
007 it under the terms of the GNU General Public License as published by
008 the Free Software Foundation; either version 2, or (at your option)
009 any later version.
010
011 GNU Classpath is distributed in the hope that it will be useful, but
012 WITHOUT ANY WARRANTY; without even the implied warranty of
013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014 General Public License for more details.
015
016 You should have received a copy of the GNU General Public License
017 along with GNU Classpath; see the file COPYING. If not, write to the
018 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
019 02110-1301 USA.
020
021 Linking this library statically or dynamically with other modules is
022 making a combined work based on this library. Thus, the terms and
023 conditions of the GNU General Public License cover the whole
024 combination.
025
026 As a special exception, the copyright holders of this library give you
027 permission to link this library with independent modules to produce an
028 executable, regardless of the license terms of these independent
029 modules, and to copy and distribute the resulting executable under
030 terms of your choice, provided that you also meet, for each linked
031 independent module, the terms and conditions of the license of that
032 module. An independent module is a module which is not derived from
033 or based on this library. If you modify this library, you may extend
034 this exception to your version of the library, but you are not
035 obligated to do so. If you do not wish to do so, delete this
036 exception statement from your version. */
037
038 package javax.management;
039
040 /**
041 * Represents a string being used as an argument
042 * to a relational constraint.
043 *
044 * @author Andrew John Hughes (gnu_andrew@member.fsf.org)
045 * @since 1.5
046 */
047 public class StringValueExp
048 implements ValueExp
049 {
050
051 /**
052 * Compatible with JDK 1.5
053 */
054 private static final long serialVersionUID = -3256390509806284044L;
055
056 /**
057 * The string value.
058 */
059 private String val;
060
061 /**
062 * Constructs a new {@link StringValueExp}.
063 */
064 public StringValueExp()
065 {
066 }
067
068 /**
069 * Constructs a new {@link StringValueExp} using the
070 * specified value.
071 *
072 * @param val the string value used for this expression.
073 */
074 public StringValueExp(String val)
075 {
076 this.val = val;
077 }
078
079 /**
080 * Applies the {@link StringValueExp} to the specified
081 * management bean by simply returning the value.
082 *
083 * @param name the {@link ObjectName} of the bean.
084 * @return the {@link StringValueExp} itself.
085 * @throws BadStringOperationException if an invalid string
086 * operation is used by
087 * the value expression.
088 * @throws BadBinaryOpValueExpException if an invalid expression
089 * is used by the value expression.
090 * @throws BadAttributeValueExpException if an invalid attribute
091 * is used by the value expression.
092 * @throws InvalidApplicationException if the value expression is applied
093 * to the wrong type of bean.
094 */
095 public ValueExp apply(ObjectName name)
096 throws BadStringOperationException, BadBinaryOpValueExpException,
097 BadAttributeValueExpException, InvalidApplicationException
098 {
099 return this;
100 }
101
102 /**
103 * Returns the value.
104 *
105 * @return the value.
106 */
107 public String getValue()
108 {
109 return val;
110 }
111
112 /**
113 * Sets the {@link MBeanServer} on which the query
114 * will be performed.
115 *
116 * @param server the new server.
117 */
118 public void setMBeanServer(MBeanServer server)
119 {
120 /* This seems to do nothing any more */
121 }
122
123 /**
124 * Returns the value in quotes.
125 *
126 * @return the value (quoted).
127 */
128 public String toString()
129 {
130 return "'" + val + "'";
131 }
132
133 }