unit ProjectGLDm;

interface

uses
  SysUtils, Classes, sdDB, sdProvider, ADODB;

type
  TProjectGLData = class(TDataModule)
    sdpProjectGL: TsdADOProvider;
    sddProjectGL: TsdDataSet;
    sdvProjectGL: TsdDataView;
    procedure sddProjectGLAfterAddRecord(ARecord: TsdDataRecord);
    procedure sddProjectGLBeforeValueChange(AValue: TsdValue;
      const NewValue: Variant; var Allow: Boolean);
  private
    FProjectData: TObject;

    function CheckSameCode(ACode: Integer): Boolean;

    procedure SaveGLPrice;
  public
    constructor Create(AProjectData: TObject);
    destructor Destroy; override;

    procedure Open(AConnection: TADOConnection);
    procedure Save;

    procedure LoadCurPhaseInfoPrice;

    property ProjectData: TObject read FProjectData write FProjectData;
  end;

implementation

uses
  ProjectData, UtilMethods, DB, Variants;

{$R *.dfm}

{ TProjectGLData }

function TProjectGLData.CheckSameCode(ACode: Integer): Boolean;
var
  Rec: TsdDataRecord;
begin
  Rec := sddProjectGL.FindKey('idxCode', ACode);
  Result := Assigned(Rec);
end;

constructor TProjectGLData.Create(AProjectData: TObject);
begin
  inherited Create(nil);
  FProjectData := AProjectData;
end;

destructor TProjectGLData.Destroy;
begin
  inherited;
end;

procedure TProjectGLData.LoadCurPhaseInfoPrice;
const
  sSelectSql = 'Select * From GLPrice Where PhaseID = %d';
var
  sSql: string;
  vQuery: TADOQuery;

  procedure LoadInfoPrice;
  var
    Rec: TsdDataRecord;
  begin
    vQuery.First;
    while not vQuery.Eof do
    begin
      Rec := sddProjectGL.FindKey('idxID', vQuery.FieldByName('GLID').AsInteger);
      Rec.ValueByName('InfoPrice').AsFloat := vQuery.FieldByName('InfoPrice').AsFloat;
      Rec.ValueByName('InfoDate').AsString := vQuery.FieldByName('InfoDate').AsVariant;
      vQuery.Next;
    end;
  end;

begin
  sddProjectGL.BeginUpdate;
  vQuery := TADOQuery.Create(nil);
  try
    vQuery.Connection := sdpProjectGL.Connection;
    sSql := Format(sSql, [TProjectData(FProjectData).PhaseIndex]);
    vQuery.SQL.Clear;
    vQuery.SQL.Add(sSql);
    vQuery.ExecSQL;
    LoadInfoPrice;
  finally
    vQuery.Free;
    sddProjectGL.EndUpdate;
  end;
end;

procedure TProjectGLData.Open(AConnection: TADOConnection);
begin
  sdpProjectGL.Connection := AConnection;
  sddProjectGL.Open;
  if not Assigned(sddProjectGL.IndexList.FindByName('idxID')) then
    sddProjectGL.AddIndex('idxID', 'ID');
  if not Assigned(sddProjectGL.IndexList.FindByName('idxCode')) then
    sddProjectGL.AddIndex('idxCode', 'Code');
  sdvProjectGL.Open;
  sdvProjectGL.IndexName := 'idxCode';
end;

procedure TProjectGLData.Save;
begin
  sddProjectGL.Save;
  with TProjectData(FProjectData) do
    if Assigned(PhaseData) and not PhaseData.StageDataReadOnly and (PhaseData.StageCount > 1) then
      SaveGLPrice;
end;

procedure TProjectGLData.SaveGLPrice;
const
  sDeleteSql = 'Delete From GLPrice Where PhaseID = %d';
const
  sInsertSql = 'Insert Into GLPrice'+
               '  Select ID As GLID, %d As PhaseID, InfoPrice, InfoDate' +
               '  From ProjectGL';
var
  vQuery: TADOQuery;
  iPhaseID: Integer;
  sSql: String;
begin
  iPhaseID := TProjectData(FProjectData).ProjProperties.PhaseCount;
  vQuery := TADOQuery.Create(nil);
  try
    vQuery.Connection := sdpProjectGL.Connection;
    sSql := Format(sDeleteSql, [iPhaseID]);
    vQuery.SQL.Clear;
    vQuery.SQL.Add(sSql);
    vQuery.ExecSQL;

    sSql := Format(sInsertSql, [iPhaseID]);
    vQuery.SQL.Clear;
    vQuery.SQL.Add(sSql);
    vQuery.ExecSQL;
  finally
    vQuery.Free;
  end;
end;

procedure TProjectGLData.sddProjectGLAfterAddRecord(
  ARecord: TsdDataRecord);
begin
  ARecord.ValueByName('ID').AsInteger := GetsdDataSetNewID(sddProjectGL, 'idxID');
  ARecord.ValueByName('CreatePhaseID').AsInteger := TProjectData(FProjectData).ProjProperties.PhaseCount;
  ARecord.ValueByName('CreateStageID').AsInteger := TProjectData(FProjectData).ProjProperties.AuditStatus;
end;

procedure TProjectGLData.sddProjectGLBeforeValueChange(AValue: TsdValue;
  const NewValue: Variant; var Allow: Boolean);
begin
  if SameText(AValue.FieldName, 'Code') then
  begin
    Allow := False;
    if VarIsNull(NewValue) then
      ErrorMessage('编号不可为空。')
    else if CheckSameCode(NewValue) then
      ErrorMessage('编号不可重复。')
    else
      Allow := True;
  end
  else if not(SameText(AValue.FieldName, 'ID') or
      SameText(AValue.FieldName, 'CreatePhaseID') or
      SameText(AValue.FieldName, 'CreateStageID')) then
  begin
    Allow := False;
    if (AValue.Owner.ValueByName('Code').AsString = '') then
      ErrorMessage('编号不可为空，请先填写编号，再填写其他信息。')
    else
      Allow := True;
  end;
end;

end.