log4net/Core/WrapperMap.cs

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#region Copyright & License
//
// Copyright 2001-2005 The Apache Software Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#endregion

using System;
using System.Collections;

using log4net.Repository;

namespace log4net.Core
{
	#region WrapperCreationHandler

	/// <summary>
	/// Delegate used to handle creation of new wrappers.
	/// </summary>
	/// <param name="logger">The logger to wrap in a wrapper.</param>
	/// <remarks>
	/// <para>
	/// Delegate used to handle creation of new wrappers. This delegate
	/// is called from the <see cref="WrapperMap.CreateNewWrapperObject"/>
	/// method to construct the wrapper for the specified logger.
	/// </para>
	/// <para>
	/// The delegate to use is supplied to the <see cref="WrapperMap"/>
	/// constructor.
	/// </para>
	/// </remarks>
	public delegate ILoggerWrapper WrapperCreationHandler(ILogger logger);

	#endregion WrapperCreationHandler

	/// <summary>
	/// Maps between logger objects and wrapper objects.
	/// </summary>
	/// <remarks>
	/// <para>
	/// This class maintains a mapping between <see cref="ILogger"/> objects and
	/// <see cref="ILoggerWrapper"/> objects. Use the <see cref="GetWrapper"/> method to 
	/// lookup the <see cref="ILoggerWrapper"/> for the specified <see cref="ILogger"/>.
	/// </para>
	/// <para>
	/// New wrapper instances are created by the <see cref="CreateNewWrapperObject"/>
	/// method. The default behavior is for this method to delegate construction
	/// of the wrapper to the <see cref="WrapperCreationHandler"/> delegate supplied
	/// to the constructor. This allows specialization of the behavior without