#region Apache License

//

// Licensed to the Apache Software Foundation (ASF) under one or more 

// contributor license agreements. See the NOTICE file distributed with

// this work for additional information regarding copyright ownership. 

// The ASF licenses this file to you 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 log4net.Core;



namespace log4net.Repository.Hierarchy

{

	/// <summary>

	/// Default implementation of <see cref="ILoggerFactory"/>

	/// </summary>

	/// <remarks>

	/// <para>

	/// This default implementation of the <see cref="ILoggerFactory"/>

	/// interface is used to create the default subclass

	/// of the <see cref="Logger"/> object.

	/// </para>

	/// </remarks>

	/// <author>Nicko Cadell</author>

	/// <author>Gert Driesen</author>

	internal class DefaultLoggerFactory : ILoggerFactory

	{

		#region Internal Instance Constructors



		/// <summary>

		/// Default constructor

		/// </summary>

		/// <remarks>

		/// <para>

		/// Initializes a new instance of the <see cref="DefaultLoggerFactory" /> class. 

		/// </para>

		/// </remarks>

		internal DefaultLoggerFactory()

		{

		}



		#endregion Internal Instance Constructors



		#region Implementation of ILoggerFactory



		/// <summary>

		/// Create a new <see cref="Logger" /> instance

		/// </summary>

		/// <param name="repository">The <see cref="ILoggerRepository" /> that will own the <see cref="Logger" />.</param>

		/// <param name="name">The name of the <see cref="Logger" />.</param>

		/// <returns>The <see cref="Logger" /> instance for the specified name.</returns>

		/// <remarks>

		/// <para>

		/// Create a new <see cref="Logger" /> instance with the 

		/// specified name.

		/// </para>

		/// <para>

		/// Called by the <see cref="Hierarchy"/> to create

		/// new named <see cref="Logger"/> instances.

		/// </para>

		/// <para>

		/// If the <paramref name="name"/> is <c>null</c> then the root logger

		/// must be returned.

		/// </para>

		/// </remarks>

		public Logger CreateLogger(ILoggerRepository repository, string name) 

		{

			if (name == null)

			{

				return new RootLogger(repository.LevelMap.LookupWithDefault(Level.Debug));

			}

			return new LoggerImpl(name);

		}



		#endregion



		/// <summary>

		/// Default internal subclass of <see cref="Logger"/>

		/// </summary>

		/// <remarks>

		/// <para>

		/// This subclass has no additional behavior over the

		/// <see cref="Logger"/> class but does allow instances

		/// to be created.

		/// </para>

		/// </remarks>

		internal sealed class LoggerImpl : Logger

		{

			/// <summary>

			/// Construct a new Logger

			/// </summary>

			/// <param name="name">the name of the logger</param>

			/// <remarks>

			/// <para>

			/// Initializes a new instance of the <see cref="LoggerImpl" /> class

			/// with the specified name. 

			/// </para>

			/// </remarks>

			internal LoggerImpl(string name) : base(name)

			{

			}

		}

	}

}