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//
// System.Runtime.Remoting.Channels.AggregateDictionary.cs
//
// Author: Lluis Sanchez Gual (lluis@ximian.com)
//
// 2002 (C) Copyright, Novell, Inc.
//
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.Collections;
namespace System.Runtime.Remoting.Channels.Http
{
internal class AggregateDictionary: IDictionary
{
IDictionary[] dictionaries;
ArrayList _values;
ArrayList _keys;
public AggregateDictionary (IDictionary[] dics)
{
dictionaries = dics;
}
public bool IsFixedSize
{
get { return true; }
}
public bool IsReadOnly
{
get { return true; }
}
public object this [object key]
{
get
{
foreach (IDictionary dic in dictionaries)
if (dic.Contains (key)) return dic [key];
return null;
}
set
{
throw new NotSupportedException ();
}
}
public ICollection Keys
{
get
{
if (_keys != null) return _keys;
_keys = new ArrayList ();
foreach (IDictionary dic in dictionaries)
_keys.AddRange (dic.Keys);
return _keys;
}
}
public ICollection Values
{
get
{
if (_values != null) return _values;
_values = new ArrayList ();
foreach (IDictionary dic in dictionaries)
_values.AddRange (dic.Values);
return _values;
}
}
public void Add (object key, object value)
{
throw new NotSupportedException ();
}
public void Clear ()
{
throw new NotSupportedException ();
}
public bool Contains (object ob)
{
foreach (IDictionary dic in dictionaries)
if (dic.Contains (ob)) return true;
return false;
}
public IDictionaryEnumerator GetEnumerator ()
{
return new AggregateEnumerator (dictionaries);
}
IEnumerator IEnumerable.GetEnumerator ()
{
return new AggregateEnumerator (dictionaries);
}
public void Remove (object ob)
{
throw new NotSupportedException ();
}
public void CopyTo (Array array, int index)
{
foreach (object ob in this)
array.SetValue (ob, index++);
}
public int Count
{
get
{
int c = 0;
foreach (IDictionary dic in dictionaries)
c += dic.Count;
return c;
}
}
public bool IsSynchronized
{
get { return false; }
}
public object SyncRoot
{
get { return this; }
}
}
internal class AggregateEnumerator: IDictionaryEnumerator
{
IDictionary[] dictionaries;
int pos = 0;
IDictionaryEnumerator currente;
public AggregateEnumerator (IDictionary[] dics)
{
dictionaries = dics;
Reset ();
}
public DictionaryEntry Entry
{
get { return currente.Entry; }
}
public object Key
{
get { return currente.Key; }
}
public object Value
{
get { return currente.Value; }
}
public object Current
{
get { return currente.Current; }
}
public bool MoveNext ()
{
if (pos >= dictionaries.Length) return false;
if (!currente.MoveNext())
{
pos++;
if (pos >= dictionaries.Length) return false;
currente = dictionaries [pos].GetEnumerator ();
return MoveNext ();
}
return true;
}
public void Reset ()
{
pos = 0;
if (dictionaries.Length > 0)
currente = dictionaries [0].GetEnumerator ();
}
}
}
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