using System.Linq.Expressions;

/// <summary>
/// 规约接口
/// </summary>
/// <typeparam name="T"></typeparam>
public interface ISpecification<T>
{
    /// <summary>
    /// 用来验证模型是否满足规约要求
    /// </summary>
    /// <param name="obj"></param>
    /// <returns></returns>
    bool IsSatisfiedBy(T obj);

    /// <summary>
    /// 获取表示当前规约的LINQ表达式。
    /// </summary>
    /// <returns></returns>
    Expression<Func<T, bool>> ToExpression();
}