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+/* BasicAttribute.java --
+ Copyright (C) 2000, 2001 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
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library. Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+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
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module. An independent module is a module which is not derived from
+or based on this library. If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so. If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package javax.naming.directory;
+
+import javax.naming.*;
+import java.util.*;
+
+/**
+ * @author Tom Tromey <tromey@redhat.com>
+ * @date June 20, 2001
+ */
+public class BasicAttribute implements Attribute
+{
+ /** The ID of this attribute. */
+ protected String attrID;
+ /** True if this attribute's values are ordered. */
+ protected boolean ordered;
+ /** Values for this attribute. */
+ protected transient Vector values;
+
+ // Used by cloning.
+ private BasicAttribute ()
+ {
+ }
+
+ public BasicAttribute (String id)
+ {
+ this (id, false);
+ }
+
+ public BasicAttribute (String id, boolean ordered)
+ {
+ attrID = id;
+ this.ordered = ordered;
+ values = new Vector ();
+ }
+
+ public BasicAttribute (String id, Object value)
+ {
+ this (id, value, false);
+ }
+
+ public BasicAttribute (String id, Object value, boolean ordered)
+ {
+ attrID = id;
+ this.ordered = ordered;
+ values = new Vector ();
+ values.add (value);
+ }
+
+ public void add (int index, Object val)
+ {
+ if (! ordered && contains (val))
+ throw new IllegalStateException ("value already in attribute");
+ values.add (index, val);
+ }
+
+ public boolean add (Object val)
+ {
+ if (! ordered && contains (val))
+ throw new IllegalStateException ("value already in attribute");
+ return values.add (val);
+ }
+
+ public void clear ()
+ {
+ values.clear ();
+ }
+
+ public Object clone ()
+ {
+ BasicAttribute c = new BasicAttribute ();
+ c.attrID = attrID;
+ c.ordered = ordered;
+ c.values = (Vector) values.clone ();
+ return c;
+ }
+
+ public boolean contains (Object val)
+ {
+ for (int i = 0; i < values.size (); ++i)
+ {
+ if (equals (val, values.get (i)))
+ return true;
+ }
+
+ return false;
+ }
+
+ public boolean equals (Object obj)
+ {
+ if (! (obj instanceof BasicAttribute))
+ return false;
+ BasicAttribute b = (BasicAttribute) obj;
+
+ if (ordered != b.ordered
+ || ! attrID.equals (b.attrID)
+ || values.size () != b.values.size ())
+ return false;
+
+ for (int i = 0; i < values.size (); ++i)
+ {
+ boolean ok = false;
+ if (ordered)
+ ok = equals (values.get (i), b.values.get (i));
+ else
+ {
+ for (int j = 0; j < b.values.size (); ++j)
+ {
+ if (equals (values.get (i), b.values.get (j)))
+ {
+ ok = true;
+ break;
+ }
+ }
+ }
+
+ if (! ok)
+ return false;
+ }
+
+ return true;
+ }
+
+ public Object get ()
+ {
+ if (values.size () == 0)
+ throw new NoSuchElementException ("no values");
+ return get (0);
+ }
+
+ public Object get (int index)
+ {
+ return values.get (index);
+ }
+
+ public NamingEnumeration getAll ()
+ {
+ return new BasicAttributeEnumeration ();
+ }
+
+ public DirContext getAttributeDefinition ()
+ throws OperationNotSupportedException, NamingException
+ {
+ throw new OperationNotSupportedException ();
+ }
+
+ public DirContext getAttributeSyntaxDefinition ()
+ throws OperationNotSupportedException, NamingException
+ {
+ throw new OperationNotSupportedException ();
+ }
+
+ public String getID ()
+ {
+ return attrID;
+ }
+
+ public int hashCode ()
+ {
+ int val = attrID.hashCode ();
+ for (int i = 0; i < values.size (); ++i)
+ {
+ Object o = values.get (i);
+ if (o == null)
+ {
+ // Nothing.
+ }
+ else if (o instanceof Object[])
+ {
+ Object[] a = (Object[]) o;
+ for (int j = 0; j < a.length; ++j)
+ val += a[j].hashCode ();
+ }
+ else
+ val += o.hashCode ();
+ }
+
+ return val;
+ }
+
+ public boolean isOrdered ()
+ {
+ return ordered;
+ }
+
+ public Object remove (int index)
+ {
+ return values.remove (index);
+ }
+
+ public boolean remove (Object val)
+ {
+ for (int i = 0; i < values.size (); ++i)
+ {
+ if (equals (val, values.get (i)))
+ {
+ values.remove (i);
+ return true;
+ }
+ }
+
+ return false;
+ }
+
+ public Object set (int index, Object val)
+ {
+ if (! ordered && contains (val))
+ throw new IllegalStateException ("value already in attribute");
+ return values.set (index, val);
+ }
+
+ public int size ()
+ {
+ return values.size ();
+ }
+
+ public String toString ()
+ {
+ String r = attrID;
+ for (int i = 0; i < values.size (); ++i)
+ r += ";" + values.get (i).toString ();
+ return r;
+ }
+
+ // This is used for testing equality of two Objects according to our
+ // local rules.
+ private boolean equals (Object one, Object two)
+ {
+ if (one == null)
+ return two == null;
+
+ if (one instanceof Object[])
+ {
+ if (! (two instanceof Object[]))
+ return false;
+
+ Object[] aone = (Object[]) one;
+ Object[] atwo = (Object[]) two;
+
+ if (aone.length != atwo.length)
+ return false;
+
+ for (int i = 0; i < aone.length; ++i)
+ {
+ if (! aone[i].equals (atwo[i]))
+ return false;
+ }
+
+ return true;
+ }
+
+ return one.equals (two);
+ }
+
+ // Used when enumerating this attribute.
+ private class BasicAttributeEnumeration implements NamingEnumeration
+ {
+ int where = -1;
+
+ public BasicAttributeEnumeration ()
+ {
+ }
+
+ public void close () throws NamingException
+ {
+ }
+
+ public boolean hasMore () throws NamingException
+ {
+ return hasMoreElements ();
+ }
+
+ public Object next () throws NamingException
+ {
+ return nextElement ();
+ }
+
+ public boolean hasMoreElements ()
+ {
+ return where < values.size ();
+ }
+
+ public Object nextElement () throws NoSuchElementException
+ {
+ if (where + 1 >= values.size ())
+ throw new NoSuchElementException ("no more elements");
+ ++where;
+ return values.get (where);
+ }
+ }
+}