unit Control_evaluationU;

interface
uses DAHelper,ClassesU,ADODB,SysUtils;
//添加獎懲信息
function AddEvaluation(Evaluation:TEvaluation):boolean;
//修改獎懲信息
function EditEvaluation(Evaluation:TEvaluation):boolean;
//刪除獎懲信息
function DelEvaluation(EvaluationID:integer):boolean;
//得到獎懲信息
function GetEvaluationArray:TADOQuery;
//查找獎懲信息,如果沒有查找到該獎懲信息，返回空值
function GetEvaluation(OpID:integer):TEvaluation;
//查找獎懲信息by學號
function GetEvaluationByStdNO(StdNO:string):TADOQuery;
implementation
function GetEvaluationByStdNO(StdNO:string):TADOQuery;
var
  sql:string;
begin
  sql:='select id,學生證號,獎懲日期,獎懲類型,isnull(獎懲說明,'''') 獎懲說明 from 獎懲信息';
  if StdNO<>'' then
    sql:=sql+' where 學生證號='+''''+StdNO+'''';
  result:=DAHelper.ExeSqlQuery(sql);
end;
function GetEvaluation(OpID:integer):TEvaluation;
var
  Evaluation:TEvaluation;
  sql:string;
  Adoquery:TADOQuery;
begin
  sql:='select id,學生證號,獎懲日期,獎懲類型,isnull(獎懲說明,'''') 獎懲說明 from 獎懲信息'+
       ' where ID='+inttostr(OpID);
  Adoquery:=DAHelper.ExeSqlQuery(sql);
  if Adoquery.RecordCount<1 then
    begin
      result:=nil;
    end
  else
    begin
      Evaluation:=TEvaluation.Create;
      Evaluation.id:=ADOQuery.Fields[0].Value;
      Evaluation.stdNo:=ADOQuery.Fields[1].Value;
      Evaluation.Edate:=DateToStr(ADOQuery.Fields[2].Value);
      Evaluation.Etype:=ADOQuery.Fields[3].Value;
      Evaluation.remark:=ADOQuery.Fields[4].Value;
      result:=Evaluation;
    end;
end;
function GetEvaluationArray:TADOQuery;
var
  sql:string;
begin
  sql:='select id,學生證號,獎懲日期,獎懲類型,isnull(獎懲說明,'''') 獎懲說明  from 獎懲信息';
  result:=DAHelper.ExeSqlQuery(sql);
end;
function DelEvaluation(EvaluationID:integer):boolean;
var
  sql:string;
begin
  sql:='delete from 獎懲信息 where id='+inttostr(EvaluationID);
  result:=DAHelper.ExeSqlNoQuery(sql);
end;
function EditEvaluation(Evaluation:TEvaluation):boolean;
var
  sql:string;
begin
  sql:='update 獎懲信息 set 學生證號='+''''+Evaluation.stdNo+''''+
       ',獎懲日期='+''''+Evaluation.Edate  +''''+
       ',獎懲類型='+''''+Evaluation.Etype +''''+
       ',獎懲說明='+''''+Evaluation.remark+''''+
       ' where id='+inttostr(Evaluation.id);
  result:=DAHelper.ExeSqlNoQuery(sql);
end;
function AddEvaluation(Evaluation:TEvaluation):boolean;
var
  sql:string;
begin
  sql:='insert into 獎懲信息(學生證號,獎懲日期,獎懲類型'+
       ',獎懲說明)'+' values('+''''+Evaluation.stdNo+''''+
       ','+''''+Evaluation.Edate+''''+
       ','+''''+Evaluation.Etype+''''+
       ','+''''+Evaluation.remark+''''+')';
  result:=DAHelper.ExeSqlNoQuery(sql);
end;

end.