using System;
using System.Collections.Generic;
using System.Text;
using Ant.Frame;
using System.Reflection;
using Ant.Core.Visitors;
using Ant.Descriptors;
using Ant.DbExpressions;

namespace Ant.ORM
{
    /// <summary>
    /// 类成员的属性
    /// </summary>
    public class FiledMetaData
    {
        Dictionary<MemberInfo, MappingMemberDescriptor> _mappingMemberDescriptors;
        /// <summary>
        /// 类中所有成员属性
        /// </summary>
        public Dictionary<MemberInfo, MappingMemberDescriptor> MappingMemberDescriptors
        {
            get { return this._mappingMemberDescriptors; }
            set { _mappingMemberDescriptors = value; }
        }

        Dictionary<MemberInfo, DbColumnAccessExpression> _memberColumnMap;
        /// <summary>
        /// 对应数据库字段
        /// </summary>
        public Dictionary<MemberInfo, DbColumnAccessExpression> MemberColumnMap
        {
            get { return this._memberColumnMap; }
            set { _memberColumnMap = value; }
        }


        private List<MemberInfo> _fields;
        /// <summary>
        /// 实体的值集合
        /// </summary>
        public List<MemberInfo> Fields
        {
            get { return _fields; }
            set { _fields = value; }
        }

        MappingMemberDescriptor _primaryKey = null;
        /// <summary>
        /// 主键
        /// </summary>
        public MappingMemberDescriptor PrimaryKey
        {
            get { return this._primaryKey; }
            set { _primaryKey = value; }
        }

        MappingMemberDescriptor _autoIncrement = null;
        /// <summary>
        /// 自增长
        /// </summary>
        public MappingMemberDescriptor AutoIncrement
        {
            get { return this._autoIncrement; }
            set { _autoIncrement = value; }
        }
        /// <summary>
        /// 类中表名
        /// </summary>
        public DbTable Table
        {
            get; set;
        }

        /// <summary>
        /// 实体类属性
        /// </summary>
        public Type EntityType { get; set; }

        /// <summary>
        /// 
        /// </summary>
        public PropertyInfo[] Propertys { get; set; }


        DefaultExpressionVisitor _visitor = null;
        /// <summary>
        /// 
        /// </summary>
        public DefaultExpressionVisitor Visitor
        {
            get
            {
                if (this._visitor == null)
                    this._visitor = new DefaultExpressionVisitor(this);

                return this._visitor;
            }
        }


    }

    /// <summary>
    /// 类成员属性和类值实体
    /// </summary>
    public class MetaData
    {

        public MetaData()
        {

        }

        #region 属性

        /// <summary>
        /// 实体属性
        /// </summary>
        public FiledMetaData FiledMeta
        {
            get; set;
        }

        /// <summary>
        /// 找出实体中有值的集合DbColumn是实体中属性名和属性值，DbExpression是用查询
        /// </summary>
        public Dictionary<string, DbColumn> FieldsColumns
        {
            get; set;
        }
        /// <summary>
        /// 找出实体中有值的集合
        /// </summary>
        public Dictionary<string, DbColumn> WhereColumns
        {
            get; set;
        }

        ///// <summary>
        ///// 状态值属性一般用Update操作
        ///// </summary>
        //public Dictionary<string, EntityValue> Values
        //{
        //    get; set;
        //}

        /// <summary>
        /// 更新列
        /// </summary>
        public Dictionary<string, DbColumn> UpdateColumns
        {
            get; set;
        }

        private EntityPersistType persistType;
        /// <summary>
        /// 操作类型
        /// </summary>
        public EntityPersistType PersistType
        {
            get { return persistType; }
            set { persistType = value; }
        }


        //private string _moduleName;
        ///// <summary>
        ///// 模块
        ///// </summary>
        //public string ModuleName
        //{
        //    get { return _moduleName; }
        //    set { _moduleName = value; }
        //}
        /// <summary>
        /// 自定义查询条件
        /// </summary>
        public string WhereSql
        {
            get; set;
        }





        #endregion
    }
}