mixtransactionattribute.cs

该文件是多层体系结构的数据访问层

#region Copyright & License
//
// $Copyright:$
//
#endregion
#region Document Information
// $Author: Bai.shijun $
// $Rev: $ 
// $Date: 05-10-08 16:13 $
#endregion

using System;
using System.Runtime.Remoting.Contexts;
using System.Runtime.Remoting.Activation;

namespace Eai.Data.Transaction
{
    /// <summary>
    /// 使用Mix Transaction。
    /// </summary>
    /// <remarks>
    /// 此属性定义的类必须派生自System.ContextBoundObject, 否则MixTransaction将不会有效。
    /// </remarks>
    [AttributeUsage(AttributeTargets.Class, AllowMultiple = false, Inherited = true)]
    public class MixTransactionAttribute : ContextAttribute
    {
        /// <summary>
        /// 构造一个实例。
        /// </summary>
        /// <param name="option">事务管理方式类型选项。</param>
        public MixTransactionAttribute(MixTransactionOption option) : base("MixTransactionAttribute")
        {
            this.transactionOption = option;
        }

        private MixTransactionOption transactionOption;
        /// <summary>
        /// 组件定义的事务管理方式类型选项。
        /// </summary>
        public MixTransactionOption TransactionOption
        {
            get { return transactionOption; }
        }

        /// <summary>
        /// Add a new property to the new context 
        /// </summary>
        public override void GetPropertiesForNewContext(IConstructionCallMessage ctor)
        {
            IContextProperty prop = new MixTransactionProperty(ctor.ActivationType, TransactionOption);
            ctor.ContextProperties.Add(prop);
        }

        /// <summary>
        /// Called by the runtime in the creating client's context 
        /// </summary>
        public override bool IsContextOK(Context ctx, IConstructionCallMessage ctorMsg)
        {
            return false;
        }

    }
}