包定义:
以下是引用片段: create or replace package MaterialManage is TYPE T_CURSOR IS REF CURSOR; Procedure Per_QuickPage ( TbName in varchar2, --表名 FieldStr in varchar2, --字段集 RowFilter in varchar2, --过滤条件 SortStr in varchar2, --排序集 RownumFieldStr in varchar2, --分页条件 TotalCount out number, --总记录数 Cur_ReturnCur out T_CURSOR --返回的游标 ); end MaterialManage; |
包主体:
以下是引用片段: create or replace package body MaterialManage is Procedure Per_QuickPage ( TbName in varchar2, --表 名 FieldStr in varchar2, --字段集 RowFilter in varchar2, --过滤条件 SortStr in varchar2, --排序集 MinRowNum in number, --分页小值 MaxRowNum in number, --分页大值 TotalCount out number, --总记录数 Cur_ReturnCur out T_CURSOR ) is v_SourceTb1 varchar2(3000); --动态表名1 v_SourceTb2 varchar2(3000); --动态表名2 v_SourceTb3 varchar2(3000); --动态表名3 v_SourceTb4 varchar2(3000); --动态表名4 v_TotalCount varchar2(50); --总记录数 v_sql varchar2(3000); --动态sql begin v_SourceTb1 := ’’’’(select ’’’’|| FieldStr ||’’’’ from ’’’’|| TbName ||’’’’) SourceTb1’’’’; v_SourceTb2 := ’’’’(select * from ’’’’|| v_SourceTb1 ||’’’’ where ’’’’|| RowFilter ||’’’’ ’’’’|| SortStr ||’’’’) SourceTb2’’’’; v_SourceTb3 := ’’’’(select rownum as Rowindex,SourceTb2.* from ’’’’|| v_SourceTb2 ||’’’’ where rownum<=’’’’|| MaxRowNum ||’’’’) SourceTb3’’’’; v_SourceTb4 := ’’’’(select * from ’’’’|| v_SourceTb1 ||’’’’ where ’’’’|| RowFilter ||’’’’) SourceTb4’’’’; v_sql := ’’’’select count(*) as TotalCount from ’’’’|| v_SourceTb4; execute immediate v_sql into v_TotalCount; TotalCount := v_TotalCount; v_sql := ’’’’select * from ’’’’|| v_SourceTb3 ||’’’’ where RowIndex >=’’’’||MinRowNum; open Cur_ReturnCur for v_sql; end Per_QuickPage; END MaterialManage; |
由于oracle有个rownum特性,所以分页的时候就是利用rownum来实现。如果大家还有什么更好的办法记得告诉我一声,多谢了,因为我测试了上面的分页方法效率并不是很高。
存储过程返回了两个参数:TotalCount :当前条件下的总记录数 Cur_ReturnCur :游标类型,就是所要读取的记录的集合
下面是ASP.NET中调用的代码:
以下是引用片段:
{
this.style.display=’none’; Codehighlighter1_2319_2685_Open_Text.style.display=’none’; Codehighlighter1_2319_2685_Closed_Image.style.display=’inline’; Codehighlighter1_2319_2685_Closed_Text.style.display=’inline’;
}" src="/biancheng/Files/2011-7/4/918175478.gif" align="top" />{
this.style.display=’none’; Codehighlighter1_2319_2685_Closed_Text.style.display=’none’; Codehighlighter1_2319_2685_Open_Image.style.display=’inline’; Codehighlighter1_2319_2685_Open_Text.style.display=’inline’;
}" src="/biancheng/Files/2011-7/4/918222863.gif" align="top" />/**//// <summary>
/// 调用存储过程实现快速分页
/// </summary>
/// <param name="TbName">表名称</param>
/// <param name="FieldStr">字段名称</param>
/// <param name="RowFilter">过滤条件</param>
/// <param name="SortStr">排序字段</param>
/// <param name="MinPageNum">分页小值</param>
/// <param name="MaxPageNum">分页大值</param>
/// <param name="TotalCount">总记录(需要返回)</param>
/// <returns>DataTable</returns>
public DataTable QuickPage(string TbName,string FieldStr,string RowFilter,string SortStr,int MinRowNum,int MaxRowNum,ref int RecordCount)
{
this.style.display=’none’; Codehighlighter1_2824_4736_Open_Text.style.display=’none’; Codehighlighter1_2824_4736_Closed_Image.style.display=’inline’; Codehighlighter1_2824_4736_Closed_Text.style.display=’inline’;
}" src="/biancheng/Files/2011-7/4/918175478.gif" align="top" />{
this.style.display=’none’; Codehighlighter1_2824_4736_Closed_Text.style.display=’none’; Codehighlighter1_2824_4736_Open_Image.style.display=’inline’; Codehighlighter1_2824_4736_Open_Text.style.display=’inline’;
}" src="/biancheng/Files/2011-7/4/918222863.gif" align="top" />{
OracleConnection conn = new OracleConnection(ConfigurationSettings.AppSettings["OracleConnstr"].ToString());
OracleCommand cmd = new OracleCommand();
cmd.Connection = conn;
cmd.CommandText = "MaterialManage.Per_QuickPage";
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("TbName",OracleType.VarChar,50); //表 名
cmd.Parameters["TbName"].Direction = ParameterDirection.Input;
cmd.Parameters["TbName"].Value = TbName;
cmd.Parameters.Add("FieldStr",OracleType.VarChar,3000); //字段集
cmd.Parameters["FieldStr"].Direction = ParameterDirection.Input;
cmd.Parameters["FieldStr"].Value = FieldStr;
cmd.Parameters.Add("RowFilter",OracleType.VarChar,3000); //过滤条件
cmd.Parameters["RowFilter"].Direction = ParameterDirection.Input;
cmd.Parameters["RowFilter"].Value = RowFilter;
cmd.Parameters.Add("SortStr",OracleType.VarChar,3000); //排序字段
cmd.Parameters["SortStr"].Direction = ParameterDirection.Input;
cmd.Parameters["SortStr"].Value = SortStr;
cmd.Parameters.Add("MinRowNum",OracleType.Number); //分页小值
cmd.Parameters["MinRowNum"].Direction = ParameterDirection.Input;
cmd.Parameters["MinRowNum"].Value = MinRowNum;
cmd.Parameters.Add("MaxRowNum",OracleType.Number); //分页大值
cmd.Parameters["MaxRowNum"].Direction = ParameterDirection.Input;
cmd.Parameters["MaxRowNum"].Value = MaxRowNum;
cmd.Parameters.Add("TotalCount",OracleType.Number); //页总记录数
cmd.Parameters["TotalCount"].Direction = ParameterDirection.Output;
cmd.Parameters["TotalCount"].Value = 0;
cmd.Parameters.Add("Cur_ReturnCur",OracleType.Cursor); //返回的游标
cmd.Parameters["Cur_ReturnCur"].Direction = ParameterDirection.Output;
DataSet Ds = new DataSet();
OracleDataAdapter adapter= new OracleDataAdapter(cmd);
adapter.Fill(Ds);
conn.Close();
//总记录数
RecordCount = int.Parse(cmd.Parameters["TotalCount"].Value.ToString());
return Ds.Tables[0];
}
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