/// <summary>
/// 设置查询列执行查询，并且将结果集转成List《T》
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="sqlable"></param>
/// <param name="fileds">查询列</param>
/// <param name="whereObj">SQL参数,例如:new{id=1,name="张三"}</param>
/// <param name="preSql">在这语句之前可插入自定义SQL</param>
/// <param name="nextSql">在这语句之后可以插自定义SQL</param>
/// <returns></returns>
public static List <T> SelectToList <T>(this Sqlable sqlable, string fileds, object whereObj = null, string preSql = null, string nextSql = null) where T : class
{
StringBuilder sbSql = new StringBuilder(sqlable.Sql.ToString());
try
{
Check.ArgumentNullException(sqlable.Sql, "语法错误，SelectToSql必需要在.Form后面使用");
sbSql.Insert(0, string.Format("SELECT {0} ", fileds));
sbSql.Append(" WHERE 1=1").Append(string.Join(" ", sqlable.Where));
sbSql.Append(sqlable.OrderBy);
sbSql.Append(sqlable.GroupBy);
var sqlParams = GetAllParas(sqlable, whereObj);
if (preSql != null)
{
sbSql.Insert(0, preSql);
}
if (nextSql != null)
{
sbSql.Append(nextSql);
}
var reval = SqlSugarTool.DataReaderToList <T>(typeof(T), sqlable.DB.GetReader(sbSql.ToString(), sqlParams), fileds);
return(reval);
}
catch (Exception ex)
{
Check.Exception(true, "sql:{0} \r\n message:{1}", sbSql.ToString(), ex.Message);
throw;
}
finally
{
sqlable = null;
sbSql = null;
}
}
/// <summary>
/// 设置查询列和分页参数执行查询，并且将结果集转成List《T》
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="sqlable"></param>
/// <param name="fileds">查询列</param>
/// <param name="orderByFiled">Order By字段，可以多个</param>
/// <param name="pageIndex">页码</param>
/// <param name="pageSize">每页显示数量</param>
/// <param name="whereObj">SQL参数,例如:new{id=1,name="张三"}</param>
/// <returns></returns>
public static List <T> SelectToPageList <T>(this Sqlable sqlable, string fileds, string orderByFiled, int pageIndex, int pageSize, object whereObj = null) where T : class
{
StringBuilder sbSql = new StringBuilder(sqlable.Sql.ToString());
try
{
if (pageIndex == 0)
{
pageIndex = 1;
}
Check.ArgumentNullException(sqlable.Sql, "语法错误，SelectToSql必需要在.Form后面使用");
SqlSugarTool.GetSqlableSql(sqlable, fileds, orderByFiled, pageIndex, pageSize, sbSql);
var sqlParams = GetAllParas(sqlable, whereObj);
var reval = SqlSugarTool.DataReaderToList <T>(typeof(T), sqlable.DB.GetReader(sbSql.ToString(), sqlParams), fileds);
return(reval);
}
catch (Exception ex)
{
Check.Exception(true, "sql:{0} \r\n message:{1}", sbSql.ToString(), ex.Message);
throw;
}
finally
{
sbSql = null;
sqlable = null;
}
}
/// <summary>
/// 将Queryable转换T的集合
/// </summary>
/// <typeparam name="T">实体类型</typeparam>
/// <param name="queryable">查询对象</param>
/// <returns>T的集合</returns>
public static List <T> ToList <T>(this Queryable <T> queryable)
{
StringBuilder sbSql = SqlSugarTool.GetQueryableSql <T>(queryable);
var reader = queryable.DB.GetReader(sbSql.ToString(), queryable.Params.ToArray());
var reval = SqlSugarTool.DataReaderToList <T>(typeof(T), reader, queryable.SelectValue.GetSelectFiles());
queryable = null;
sbSql = null;
return(reval);
}
/// <summary>
/// 根据SQL获取T
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="sql"></param>
/// <param name="pars"></param>
/// <returns></returns>
public T GetSingle <T>(string sql, params SQLiteParameter[] pars)
{
var reval = SqlSugarTool.DataReaderToList <T>(typeof(T), GetReader(sql, pars), null).Single();
return(reval);
}
/// <summary>
/// 根据SQL获取T的集合
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="sql"></param>
/// <param name="pars"></param>
/// <returns></returns>
public List <T> GetList <T>(string sql, params SqliteParameter[] pars)
{
var reval = SqlSugarTool.DataReaderToList <T>(typeof(T), GetReader(sql, pars), null);
return(reval);
}