//------------------------------------
//版權所有：杭州商易信息技術有限公司
//功能描述：角色數據訪問類
//    作者：沈偉
//    日期：2008/08/20
//------------------------------------
using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using SystemFrameworks;

namespace Itsv.DAL.SystemManage
{
    public class RolesDAL
    {
        #region  成員方法

        /// <summary>
        /// 是否存在該記錄
        /// </summary>
        public bool Exists(string  role_name)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select count(1) from Roles where role_name='" + role_name + "'");
            object obj = DbHelperSQL.GetSingle(strSql.ToString());
            int cmdresult;
            if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
            {
                cmdresult = 0;
            }
            else
            {
                cmdresult = int.Parse(obj.ToString());
            }
            if (cmdresult == 0)
            {
                return false;
            }
            else
            {
                return true;
            }
        }

        /// <summary>
        /// 增加一條數據
        /// </summary>
        public void Add(Itsv.Model.Roles model)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("insert into Roles(");
            strSql.Append("role_name,role_description,inuse");
            strSql.Append(")");
            strSql.Append(" values (");
            strSql.Append("'" + model.role_name + "',");
            strSql.Append("'" + model.role_description + "',");
            if (model.inuse)
                strSql.Append("1");
            else
                strSql.Append("0");
            strSql.Append(")");
            DbHelperSQL.ExecuteSql(strSql.ToString());
        }

        /// <summary>
        /// 更新一條數據
        /// </summary>
        public void Update(Itsv.Model.Roles model)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("update Roles set ");
            strSql.Append("role_name='" + model.role_name + "',");
            strSql.Append("role_description='" + model.role_description + "',");
            strSql.Append("inuse= ");
            if (model.inuse)
                strSql.Append("1");
            else
                strSql.Append("0");
            strSql.Append(" where role_id=" + model.role_id + "");
            DbHelperSQL.ExecuteSql(strSql.ToString());
        }

        /// <summary>
        /// 刪除一條數據
        /// </summary>
        public void Delete(int role_id)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("delete Roles ");
            strSql.Append(" where role_id=" + role_id);
            DbHelperSQL.ExecuteSql(strSql.ToString());
        }

        /// <summary>
        /// 得到一個對象實體
        /// </summary>
        public Itsv.Model.Roles GetModel(int role_id)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select * from Roles ");
            strSql.Append(" where role_id=" + role_id);
            Itsv.Model.Roles model = new Itsv.Model.Roles();
            DataSet ds = DbHelperSQL.Query(strSql.ToString());
            model.role_id = role_id;
            if (ds.Tables[0].Rows.Count > 0)
            {
                model.role_name = ds.Tables[0].Rows[0]["role_name"].ToString();
                model.role_description = ds.Tables[0].Rows[0]["role_description"].ToString();
                if (ds.Tables[0].Rows[0]["inuse"].ToString() != "")
                {
                    if ((ds.Tables[0].Rows[0]["inuse"].ToString() == "1") || (ds.Tables[0].Rows[0]["inuse"].ToString().ToLower() == "true"))
                    {
                        model.inuse = true;
                    }
                    else
                    {
                        model.inuse = false;
                    }
                }

                return model;
            }
            else
            {
                return null;
            }
        }

        /// <summary>
        /// 得到一個對象實體
        /// </summary>
        public Itsv.Model.Roles GetModel(string role_name)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select * from Roles ");
            strSql.Append(" where role_name= '" + role_name+"'");
            Itsv.Model.Roles model = new Itsv.Model.Roles();
            DataSet ds = DbHelperSQL.Query(strSql.ToString());
            model.role_name = role_name;
            if (ds.Tables[0].Rows.Count > 0)
            {
                model.role_id = int.Parse(ds.Tables[0].Rows[0]["role_id"].ToString());
                model.role_description = ds.Tables[0].Rows[0]["role_description"].ToString();
                if (ds.Tables[0].Rows[0]["inuse"].ToString() != "")
                {
                    if ((ds.Tables[0].Rows[0]["inuse"].ToString() == "1") || (ds.Tables[0].Rows[0]["inuse"].ToString().ToLower() == "true"))
                    {
                        model.inuse = true;
                    }
                    else
                    {
                        model.inuse = false;
                    }
                }

                return model;
            }
            else
            {
                return null;
            }
        }

        /// <summary>
        /// 獲得數據列表
        /// </summary>
        public DataSet GetList(string strWhere)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select * from Roles ");
            if (strWhere.Trim() != "")
            {
                strSql.Append(" where " + strWhere);
            }
            return DbHelperSQL.Query(strSql.ToString());
        }
        #endregion  成員方法
    }
}