log4net/Filter/LevelRangeFilter.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 log4net;
using log4net.Core;
using log4net.Util;

namespace log4net.Filter
{
	/// <summary>
	/// This is a simple filter based on <see cref="Level"/> matching.
	/// </summary>
	/// <remarks>
	/// <para>
	/// The filter admits three options <see cref="LevelMin"/> and <see cref="LevelMax"/>
	/// that determine the range of priorities that are matched, and
	/// <see cref="AcceptOnMatch"/>. If there is a match between the range
	/// of priorities and the <see cref="Level"/> of the <see cref="LoggingEvent"/>, then the 
	/// <see cref="Decide"/> method returns <see cref="FilterDecision.Accept"/> in case the <see cref="AcceptOnMatch"/> 
	/// option value is set to <c>true</c>, if it is <c>false</c>
	/// then <see cref="FilterDecision.Deny"/> is returned. If there is no match, <see cref="FilterDecision.Deny"/> is returned.
	/// </para>
	/// </remarks>
	/// <author>Nicko Cadell</author>
	/// <author>Gert Driesen</author>
	public class LevelRangeFilter : FilterSkeleton
	{
		#region Member Variables

		/// <summary>
		/// Flag to indicate the behavior when matching a <see cref="Level"/>
		/// </summary>
		private bool m_acceptOnMatch = true;

		/// <summary>
		/// the minimum <see cref="Level"/> value to match
		/// </summary>
		private Level m_levelMin;

		/// <summary>
		/// the maximum <see cref="Level"/> value to match
		/// </summary>
		private Level m_levelMax;