/* URISyntax.java -- 
   Copyright (C) 2003, 2005 Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

GNU Classpath is distributed in the hope that it will be useful, but
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA.

Linking this library statically or dynamically with other modules is
making a combined work based on this library.  Thus, the terms and
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As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
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package javax.print.attribute;

import java.io.Serializable;
import java.net.URI;

/**
 * <code>URISyntax</code> is the abstract base class of all attribute 
 * classes having an Uniform Resource Identifier URI as value.
 * 
 * @author Michael Koch (konqueror@gmx.de)
 */
public abstract class URISyntax
  implements Cloneable, Serializable
{
  private static final long serialVersionUID = -7842661210486401678L;

  private URI uri;

  /**
   * Creates a <code>URISyntax</code> object.
   *
   * @param uri the URI value for the syntax
   *
   * @exception NullPointerException if uri is null
   */
  protected URISyntax(URI uri)
  {
    if (uri == null)
      throw new NullPointerException("uri may not be null");

    this.uri = uri;
  }

  /**
   * Tests if the given object is equal to this object.
   *
   * @param obj the object to test
   *
   * @return <code>true</code> if both objects are equal, 
   * <code>false</code> otherwise.
   */
  public boolean equals(Object obj)
  {
    if (! (obj instanceof URISyntax))
      return false;

    return uri.equals(((URISyntax) obj).getURI());
  }

  /**
   * Returns the URI value of this syntax object.
   *
   * @return The URI.
   */
  public URI getURI()
  {
    return uri;
  }

  /**
   * Returns the hashcode for this object.
   *
   * @return The hashcode.
   */
  public int hashCode()
  {
    return uri.hashCode();
  }

  /**
   * Returns the string representation for this object.
   *
   * @return The string representation.
   */
  public String toString()
  {
    return uri.toString();
  }
}