001/* NameComponent.java --
002   Copyright (C) 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
038
039package org.omg.CosNaming;
040
041import org.omg.CORBA.portable.IDLEntity;
042
043import java.util.zip.Adler32;
044
045/**
046 * The name component, a node in the multi-comonent name.
047 *
048 * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
049 */
050public final class NameComponent
051  implements IDLEntity
052{
053  /**
054   * Use serialVersionUID (v1.4) for interoperability.
055   */
056  private static final long serialVersionUID = -1052538183391762390L;
057
058  /**
059   * The name component identifier.
060   */
061  public String id;
062
063  /**
064  * The name component kind (this conception is similar to
065  * the file type conception.
066  */
067  public String kind;
068
069  /**
070   * Create the empty name component.
071   */
072  public NameComponent()
073  {
074  }
075
076  /**
077   * Create the initialised name component.
078   */
079  public NameComponent(String _id, String _kind)
080  {
081    id = _id;
082    kind = _kind;
083  }
084
085  /**
086   * Returns true if both name and kind are equal.
087   */
088  public boolean equals(Object other)
089  {
090    if (other instanceof NameComponent)
091      {
092        NameComponent n = (NameComponent) other;
093
094        boolean ieq;
095        boolean keq;
096
097        if (id == null || n.id == null)
098          ieq = id == n.id;
099        else
100          ieq = id.equals(n.id);
101
102        if (kind == null || n.kind == null)
103          keq = kind == n.kind;
104        else
105          keq = kind.equals(n.kind);
106
107        return keq && ieq;
108      }
109    else
110      return false;
111  }
112
113  /**
114   * Get a string representation (id.kind).
115   */
116  public String toString()
117  {
118    return id + "." + kind;
119  }
120
121  /**
122   * Return the hashCode of this NameComponent.
123   */
124  public int hashCode()
125  {
126    Adler32 adler = new Adler32();
127    adler.update(toString().getBytes());
128    return (int) adler.getValue() & Integer.MAX_VALUE;
129  }
130}