/// <summary>
/// 执行分页数据查询操作,返回PageResponseData
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="connectionStr"></param>
/// <param name="request"></param>
/// <returns></returns>
public override PageResponseData GetPageList <T>(string connectionStr, PageRequestData pageRequest)
{
PageResponseData responsResult = new PageResponseData();
try
{
#region 相关变量定义
Type type = typeof(T);
string tableName = type.Name;
int startNum = pageRequest.PageSize * (pageRequest.PageIndex - 1) + 1;
int endNum = pageRequest.PageSize * pageRequest.PageIndex;
var searchEntity = pageRequest.SearchEntityObj;
#endregion
#region 分页查询处理
EntityColumn idColumn = new EntityColumnUtility().GetIdColumn <T>(null);
if (idColumn != null)
{
responsResult.TotalCount = GetCount <T>(connectionStr, searchEntity);
if (responsResult.TotalCount > 0)
{
if (string.IsNullOrEmpty(searchEntity.ColumnSql))
{
searchEntity.ColumnSql = "b.*";
}
if (string.IsNullOrEmpty(searchEntity.SortColumn))
{
searchEntity.SortColumn = idColumn.ColumnName;
searchEntity.SortMethod = "asc";
}
StringBuilder cmdText = new StringBuilder();
cmdText.AppendFormat("select {0} from ", searchEntity.ColumnSql);
cmdText.Append("(");
cmdText.AppendFormat("select ROW_NUMBER() over(order by {0} {1}) num,{2} from {3} ", searchEntity.SortColumn, searchEntity.SortMethod, idColumn.ColumnName, tableName);
if (!string.IsNullOrEmpty(searchEntity.WhereSql))
{
cmdText.AppendFormat("where {0} ", searchEntity.WhereSql);
}
cmdText.Append(") ");
cmdText.AppendFormat("a inner join {0} b on a.{1}=b.{1} and a.num between {2} and {3} ", tableName, idColumn.ColumnName, startNum, endNum);
IDataReader dataReader;
if (searchEntity.WhereParam != null)
{
dataReader = SqlDbBase.ExecuteReaderWithParam(connectionStr, cmdText.ToString(), CommandType.Text, searchEntity.WhereParam);
}
else
{
dataReader = SqlDbBase.ExecuteReader(connectionStr, cmdText.ToString(), CommandType.Text, null);
}
responsResult.Data = Map <T>(dataReader);
}
}
#endregion
}
catch (Exception ex)
{
throw ex;
}
return(responsResult);
}
/// <summary>
/// 执行分页数据查询操作,返回PageResponseData
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="connectionStr"></param>
/// <param name="request"></param>
/// <returns></returns>
public override PageResponseData GetPageList <T>(string connectionStr, PageRequestData pageRequest)
{
PageResponseData responsResult = new PageResponseData();
try
{
#region 相关变量定义
Type type = typeof(T);
string tableName = type.Name;
int startNum = pageRequest.PageSize * (pageRequest.PageIndex - 1);
var searchEntity = pageRequest.SearchEntityObj;
#endregion
#region 分页查询处理
EntityColumn idColumn = new EntityColumnUtility().GetIdColumn <T>(null);
if (idColumn != null)
{
//查询记录结果数
responsResult.TotalCount = GetCount <T>(connectionStr, searchEntity);
if (responsResult.TotalCount > 0)
{
StringBuilder cmdText = new StringBuilder();
if (string.IsNullOrEmpty(searchEntity.ColumnSql))
{
searchEntity.ColumnSql = "*";
}
if (string.IsNullOrEmpty(searchEntity.SortColumn))
{
searchEntity.SortColumn = idColumn.ColumnName;
}
cmdText.AppendFormat("select {0} from {1} ", searchEntity.ColumnSql, tableName);
if (string.IsNullOrEmpty(searchEntity.WhereSql))
{
cmdText.AppendFormat("where {0} ", searchEntity.WhereSql);
}
cmdText.AppendFormat("order by {0} {1} ", searchEntity.SortColumn, searchEntity.SortMethod);
cmdText.AppendFormat("limit {0},{1} ", startNum, pageRequest.PageSize);
IDataReader dataReader;
if (searchEntity.WhereParam != null)
{
dataReader = SqlDbBase.ExecuteReaderWithParam(connectionStr, cmdText.ToString(), CommandType.Text, searchEntity.WhereParam);
}
else
{
dataReader = SqlDbBase.ExecuteReader(connectionStr, cmdText.ToString(), CommandType.Text, null);
}
responsResult.Data = Map <T>(dataReader);
}
}
#endregion
}
catch (Exception ex)
{
throw ex;
}
return(responsResult);
}
