001/* URISyntax.java -- 
002   Copyright (C) 2003, 2005 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.print.attribute;
039
040import java.io.Serializable;
041import java.net.URI;
042
043/**
044 * <code>URISyntax</code> is the abstract base class of all attribute 
045 * classes having an Uniform Resource Identifier URI as value.
046 * 
047 * @author Michael Koch (konqueror@gmx.de)
048 */
049public abstract class URISyntax
050  implements Cloneable, Serializable
051{
052  private static final long serialVersionUID = -7842661210486401678L;
053
054  private URI uri;
055
056  /**
057   * Creates a <code>URISyntax</code> object.
058   *
059   * @param uri the URI value for the syntax
060   *
061   * @exception NullPointerException if uri is null
062   */
063  protected URISyntax(URI uri)
064  {
065    if (uri == null)
066      throw new NullPointerException("uri may not be null");
067
068    this.uri = uri;
069  }
070
071  /**
072   * Tests if the given object is equal to this object.
073   *
074   * @param obj the object to test
075   *
076   * @return <code>true</code> if both objects are equal, 
077   * <code>false</code> otherwise.
078   */
079  public boolean equals(Object obj)
080  {
081    if (! (obj instanceof URISyntax))
082      return false;
083
084    return uri.equals(((URISyntax) obj).getURI());
085  }
086
087  /**
088   * Returns the URI value of this syntax object.
089   *
090   * @return The URI.
091   */
092  public URI getURI()
093  {
094    return uri;
095  }
096
097  /**
098   * Returns the hashcode for this object.
099   *
100   * @return The hashcode.
101   */
102  public int hashCode()
103  {
104    return uri.hashCode();
105  }
106
107  /**
108   * Returns the string representation for this object.
109   *
110   * @return The string representation.
111   */
112  public String toString()
113  {
114    return uri.toString();
115  }
116}