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/******************************************************************************
* The MIT License
* Copyright (c) 2003 Novell Inc. www.novell.com
*
* 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.
*******************************************************************************/
//
// Novell.Directory.Ldap.Controls.LdapSortControl.cs
//
// Author:
// Sunil Kumar (Sunilk@novell.com)
//
// (C) 2003 Novell, Inc (http://www.novell.com)
//
using System;
using Novell.Directory.Ldap;
using Novell.Directory.Ldap.Asn1;
namespace Novell.Directory.Ldap.Controls
{
/// <summary> LdapSortControl is a Server Control to specify how search results are
/// to be sorted by the server. If a server does not support
/// sorting in general or for a particular query, the results will be
/// returned unsorted, along with a control indicating why they were not
/// sorted (or that sort controls are not supported). If the control was
/// marked "critical", the whole search operation will fail if the sort
/// control is not supported.
/// </summary>
public class LdapSortControl:LdapControl
{
private static int ORDERING_RULE = 0;
private static int REVERSE_ORDER = 1;
/// <summary> The requestOID of the sort control</summary>
private static System.String requestOID = "1.2.840.113556.1.4.473";
/// <summary> The responseOID of the sort control</summary>
private static System.String responseOID = "1.2.840.113556.1.4.474";
/// <summary> Constructs a sort control with a single key.
///
/// </summary>
/// <param name="key"> A sort key object, which specifies attribute,
/// order, and optional matching rule.
///
/// </param>
/// <param name="critical True">if the search operation is to fail if the
/// server does not support this control.
/// </param>
public LdapSortControl(LdapSortKey key, bool critical):this(new LdapSortKey[]{key}, critical)
{
return ;
}
/// <summary> Constructs a sort control with multiple sort keys.
///
/// </summary>
/// <param name="keys An">array of sort key objects, to be processed in
/// order.
///
/// </param>
/// <param name="critical True">if the search operation is to fail if the
/// server does not support this control.
/// </param>
public LdapSortControl(LdapSortKey[] keys, bool critical):base(requestOID, critical, null)
{
Asn1SequenceOf sortKeyList = new Asn1SequenceOf();
for (int i = 0; i < keys.Length; i++)
{
Asn1Sequence key = new Asn1Sequence();
key.add(new Asn1OctetString(keys[i].Key));
if ((System.Object) keys[i].MatchRule != null)
{
key.add(new Asn1Tagged(new Asn1Identifier(Asn1Identifier.CONTEXT, false, ORDERING_RULE), new Asn1OctetString(keys[i].MatchRule), false));
}
if (keys[i].Reverse == true)
{
// only add if true
key.add(new Asn1Tagged(new Asn1Identifier(Asn1Identifier.CONTEXT, false, REVERSE_ORDER), new Asn1Boolean(true), false));
}
sortKeyList.add(key);
}
setValue(sortKeyList.getEncoding(new LBEREncoder()));
return ;
}
static LdapSortControl()
{
/*
* This is where we register the control responses
*/
{
/*
* Register the Server Sort Control class which is returned by the
* server in response to a Sort Request
*/
try
{
LdapControl.register(responseOID, System.Type.GetType("Novell.Directory.Ldap.Controls.LdapSortResponse"));
}
catch (System.Exception e)
{
}
}
}
}
}
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