动态代理仓储

SmartSql 动态代理仓储，一个高生产力的组件。该组件看似很难懂，实际上仅做了映射Statement,转发请求的功能。但却意义重大。

SmartSql提供了一个通用泛型仓储接口

SmartSql.DyRepository.IRepository<TEntity, TPrimary>

    public interface IRepository
    {
        ISqlMapper SqlMapper { get; }
    }
    /// <summary>
    /// 泛型仓储接口
    /// </summary>
    /// <typeparam name="TEntity"></typeparam>
    /// <typeparam name="TPrimary"></typeparam>
    public interface IRepository<TEntity, TPrimary> : IRepository
        , IInsert<TEntity>, IUpdate<TEntity>, IDelete<TPrimary>,
        IGetEntity<TEntity, TPrimary>,
        IGetRecord, IQueryByPage<TEntity>,
        IQuery<TEntity>, IIsExist
    {

    }
    /// <summary>
    /// 异步泛型仓储接口
    /// </summary>
    /// <typeparam name="TEntity"></typeparam>
    /// <typeparam name="TPrimary"></typeparam>
    public interface IRepositoryAsync<TEntity, TPrimary> : IRepository
      , IInsertAsync<TEntity>, IUpdateAsync<TEntity>, IDeleteAsync<TPrimary>,
        IGetEntityAsync<TEntity, TPrimary>,
        IGetRecordAsync, IQueryByPageAsync<TEntity>,
        IQueryAsync<TEntity>, IIsExistAsync
    {

    }

定义仓储接口

    /// <summary>
    /// 属性可选： [SqlMap(Scope = "User")] ,不设置 则默认 Scope 模板：I{Scope}Repository
    /// 可传入自定义模板
    /// RepositoryBuilder builder=new RepositoryBuilder("I{Scope}DAL");
    /// </summary>
    public interface IUserRepository : IRepository<User, string>
    {
        /// <summary>
        /// 属性可选 [Statement(Execute = ExecuteBehavior.Auto,Id = "Query")]
        /// 默认 Execute：Auto ，自动判断 执行类型
        /// 默认 Id : 方法名
        /// </summary>
        /// <param name="reqParams"></param>
        /// <returns></returns>
        [Statement(Sql = "Select Top(@taken) T.* From User T With(NoLock);")]
        IEnumerable<User> QueryBySql(int taken);
    }

注入依赖

注入依赖后将动态实现仓储接口，并映射好相应SqlMap

            services
                .AddSmartSql()
                .AddRepositoryFromAssembly(o =>
                {
                    o.AssemblyString = "SmartSql.Sample.AspNetCore";
                    o.Filter = (type) => type.Namespace == "SmartSql.Sample.AspNetCore.DyRepositories";
                });

Attribute

仓储接口，函数特性（StatementAttribute）

    public class StatementAttribute : Attribute
    {
        /// <summary>
        /// 定义 SmartSqlMap.Scope 该属性可选，默认使用仓储接口的Scope
        /// </summary>
        public string Scope { get; set; }
        /// <summary>
        /// 可选，默认使用函数名作为 Statement.Id
        /// </summary>
        public string Id { get; set; }
        /// <summary>
        /// 可选， 默认 Execute：Auto ，自动判断 执行类型
        /// </summary>
        public ExecuteBehavior Execute { get; set; } = ExecuteBehavior.Auto;
        /// <summary>
        /// 可选，当不使用 SmartSqlMap.Statement 时可直接定义 Sql
        /// </summary>
        public string Sql { get; set; }
        /// <summary>
        /// 命令类型
        /// </summary>
        public CommandType CommandType { get; set; } = CommandType.Text;
        /// <summary>
        /// 数据源
        /// </summary>
        public DataSourceChoice SourceChoice { get; set; } = DataSourceChoice.Unknow;
    }

    /// <summary>
    /// 执行行为
    /// </summary>
    public enum ExecuteBehavior
    {
        /// <summary>
        /// 自动判断执行类型
        /// </summary>
        Auto = 0,
        /// <summary>
        /// 返回受影响行数
        /// </summary>
        Execute = 1,
        /// <summary>
        /// 返回结果的第一行第一列的值，主要用于返回主键
        /// </summary>
        ExecuteScalar = 2,
        /// <summary>
        /// 查询枚举对象，List
        /// </summary>
        Query = 3,
        /// <summary>
        /// 查询单个对象
        /// </summary>
        QuerySingle = 4,
        /// <summary>
        /// 返回DataTable
        /// </summary>
        GetDataTable = 5,
        /// <summary>
        /// 返回DataSet
        /// </summary>
        GetDataSet = 6
    }

仓储接口特性（SqlMapAttribute）

    public class SqlMapAttribute : Attribute
    {
        /// <summary>
        /// SmartSqlMapConfig.Scope 映射
        /// </summary>
        public string Scope { get; set; }
    }

函数参数特性（ParamAttribute）

    public class ParamAttribute : Attribute
    {
        public ParamAttribute(string name = "")
        {
            Name = name;
        }
        /// <summary>
        /// DbDataParameter.Name
        /// </summary>
        public String Name { get; set; }
        public Type FieldType { get; set; }