// Copyright 2003-2004 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.
namespace Apache.Avalon.Framework
{
	using System;

	///<summary>
	/// Attribute used to mark the services that a component implements
	///</summary>	
	[AttributeUsage(AttributeTargets.Class, AllowMultiple=true, Inherited=false)]
	public sealed class AvalonServiceAttribute : Attribute
	{
		private Type m_type;

		///<summary>
		///  Constructor to initialize the service's name.
		///</summary>
		///<param name="type">The type for the service</param>
		///<exception cref="ArgumentException">If the "type" value is not an interface</exception>
		public AvalonServiceAttribute(Type type)
		{
			if (!type.IsInterface)
			{
				throw new ArgumentException(
					"The type passed in does not represent an interface",
					"type" );
			}

			m_type = type;
		}

		///<summary>
		///  The Type of the service
		///</summary>
		public Type ServiceType
		{
			get
			{
				return m_type;
			}
		}
	}
}