96 lines
3.0 KiB
C#
96 lines
3.0 KiB
C#
/******************************************************************************
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* The MIT License
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* Copyright (c) 2003 Novell Inc. www.novell.com
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the Software), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*******************************************************************************/
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//
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// Novell.Directory.Ldap.Rfc2251.RfcMessageID.cs
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//
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// Author:
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// Sunil Kumar (Sunilk@novell.com)
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//
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// (C) 2003 Novell, Inc (http://www.novell.com)
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//
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using System;
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using Novell.Directory.Ldap.Asn1;
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namespace Novell.Directory.Ldap.Rfc2251
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{
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/// <summary> Represents an Ldap Message ID.
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///
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/// <pre>
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/// MessageID ::= INTEGER (0 .. maxInt)
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///
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/// maxInt INTEGER ::= 2147483647 -- (2^^31 - 1) --
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///
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/// Note: The creation of a MessageID should be hidden within the creation of
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/// an RfcLdapMessage. The MessageID needs to be in sequence, and has an
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/// upper and lower limit. There is never a case when a user should be
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/// able to specify the MessageID for an RfcLdapMessage. The MessageID()
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/// class should be package protected. (So the MessageID value isn't
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/// arbitrarily run up.)
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/// </pre>
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/// </summary>
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class RfcMessageID:Asn1Integer
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{
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/// <summary> Increments the message number atomically
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///
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/// </summary>
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/// <returns> the new message number
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/// </returns>
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private static int MessageID
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{
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get
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{
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lock (lock_Renamed)
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{
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return (messageID < System.Int32.MaxValue)?++messageID:(messageID = 1);
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}
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}
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}
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private static int messageID = 0;
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private static System.Object lock_Renamed;
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/// <summary> Creates a MessageID with an auto incremented Asn1Integer value.
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///
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/// Bounds: (0 .. 2,147,483,647) (2^^31 - 1 or Integer.MAX_VALUE)
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///
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/// MessageID zero is never used in this implementation. Always
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/// start the messages with one.
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/// </summary>
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protected internal RfcMessageID():base(MessageID)
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{
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}
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/// <summary> Creates a MessageID with a specified int value.</summary>
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protected internal RfcMessageID(int i):base(i)
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{
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}
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static RfcMessageID()
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{
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lock_Renamed = new System.Object();
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}
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}
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}
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