001/* StringValueExp.java -- Represents strings to be passed to queries.
002   Copyright (C) 2007 Free Software Foundation, Inc.
003
004This file is part of GNU Classpath.
005
006GNU Classpath is free software; you can redistribute it and/or modify
007it under the terms of the GNU General Public License as published by
008the Free Software Foundation; either version 2, or (at your option)
009any later version.
010
011GNU Classpath is distributed in the hope that it will be useful, but
012WITHOUT ANY WARRANTY; without even the implied warranty of
013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014General Public License for more details.
015
016You should have received a copy of the GNU General Public License
017along with GNU Classpath; see the file COPYING.  If not, write to the
018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
01902110-1301 USA.
020
021Linking this library statically or dynamically with other modules is
022making a combined work based on this library.  Thus, the terms and
023conditions of the GNU General Public License cover the whole
024combination.
025
026As a special exception, the copyright holders of this library give you
027permission to link this library with independent modules to produce an
028executable, regardless of the license terms of these independent
029modules, and to copy and distribute the resulting executable under
030terms of your choice, provided that you also meet, for each linked
031independent module, the terms and conditions of the license of that
032module.  An independent module is a module which is not derived from
033or based on this library.  If you modify this library, you may extend
034this exception to your version of the library, but you are not
035obligated to do so.  If you do not wish to do so, delete this
036exception statement from your version. */
037
038package 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 */
047public 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}