alheuredudejeuner

Hello,

UIB fonctionne avec Delphi tokyo 10.2

Ajoutons lui un dataset d'update et d'insert.

Code delphi :

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unit FDUIBFBMemTable;
 
interface
 
uses
  System.SysUtils, System.Classes, System.Generics.Collections,
  Data.DB, uib,
  FireDAC.Comp.DataSet, FireDAC.Comp.Client;
 
type
  TPSField = class
  private
  public
    FName   : string;
    FType   : string;
    FLength : string;
    FCharset: string;
    Function GetFieldType: TFieldType;
  end;
 
  TFDUIBFBMemTable = class(TFDMemTable)
  private
    { Déclarations privées }
    FListPSField  : TObjectList<TPSField>;
    FUIBDatabase: TUIBDataBase;
    FUpdateBase: Boolean;
    FsqlSelect: string;
    FModeConnected: Boolean;
    FTableName: string;
    FsqlUpdate: string;
    FGetBDField: Boolean;
    //**************************
    Procedure odBeforePost(DataSet: TDataSet);
    procedure odBeforeDelete(DataSet: TDataSet);
    procedure odAfterOpen(DataSet: TDataSet);
    procedure getData(q: Tuibquery);
    Procedure ActiveDatas(Sender: TObject);
    Procedure ClearDatasField;
    function  GetIDuib(aType: string; Uibdatabase: Tuibdatabase): Integer;
    //**************************
    procedure SetUIBDatabase(const Value: TUIBDataBase);
    procedure SetUpdateBase(const Value: Boolean);
    procedure SetsqlSelect(const Value: string);
    procedure SetModeConnected(const Value: Boolean);
    procedure SetTableName(const Value: string);
    procedure SetsqlUpdate(const Value: string);
    procedure SetGetBDField(const Value: Boolean);
    //**************************
    property UpdateBase: Boolean read FUpdateBase write SetUpdateBase;
  protected
    { Déclarations protégées }
  public
    { Déclarations publiques }
    constructor Create(AOwner: TComponent);  override;
    destructor Destroy; override;
  published
    { Déclarations publiées }
    property UIBDatabase    : TUIBDataBase  read FUIBDatabase   write SetUIBDatabase;
    property sqlSelect      : string        read FsqlSelect     write SetsqlSelect;
    property sqlUpdate      : string        read FsqlUpdate     write SetsqlUpdate;
    property ModeConnected  : Boolean       read FModeConnected write SetModeConnected;
    Property TableName      : string        read FTableName     write SetTableName;
    property GetBDField : Boolean read FGetBDField write SetGetBDField;
  end;
 
procedure Register;
 
implementation
 
procedure Register;
begin
   RegisterComponents('Pilotage', [TFDUIBFBMemTable]);
end;
 
{ TFDUIBFBMemTable }
 
{*
@09/03/2018 AMN
@Methode: TFDUIBFBMemTable.ActiveDatas
@Motif: DataGet
*}
procedure TFDUIBFBMemTable.ActiveDatas(Sender: TObject);
var
  t     : TUIBTransaction;
  q     : TUIBQuery;
  sTemp : string;
  aField: TPSField;
  I     : Integer;
  //*************************
  Procedure AddFieldTypes ;
  begin
    aField:= TPSField.Create;
    aField.FName    := Trim(q.Fields.ByNameAsString['FIELD_NAME']);
    aField.FType    := Trim(q.Fields.ByNameAsString['FIELD_TYPE']);
    aField.FLength  := Trim(q.Fields.ByNameAsString['FIELD_LENGTH']);
    aField.FCharset := Trim(q.Fields.ByNameAsString['FIELD_CHARSET']);
    FListPSField.Add(aField);
  end;
  //*************************
begin
  try
    FieldDefs.Clear;
    if UIBDatabase<>nil then
    begin
      q:=TUIBQuery.Create(nil);
      t:=TUIBTransaction.Create(nil);
      try
        UpdateBase :=False;
        t.DataBase:=UIBDatabase;
        q.Transaction:=t;
        q.SQL.Add( 'SELECT R.RDB$FIELD_NAME AS field_name, '
                  +'CASE F.RDB$FIELD_TYPE '
                  +'WHEN 7 THEN ''SMALLINT'' '
                  +'WHEN 8 THEN ''INTEGER'' '
                  +'WHEN 9 THEN ''QUAD'' '
                  +'WHEN 10 THEN ''FLOAT'' '
                  +'WHEN 11 THEN ''D_FLOAT'' '
                  +'WHEN 12 THEN ''DATE'' '
                  +'WHEN 13 THEN ''TIME'' '
                  +'WHEN 14 THEN ''CHAR'' '
                  +'WHEN 16 THEN ''INT64'' '
                  +'WHEN 27 THEN ''DOUBLE'' '
                  +'WHEN 35 THEN ''TIMESTAMP'' '
                  +'WHEN 37 THEN ''VARCHAR'' '
                  +'WHEN 40 THEN ''CSTRING'' '
                  +'WHEN 261 THEN ''BLOB'' '
                  +' ELSE ''UNKNOWN'' '
                  +'END AS field_type,'
                  +'F.RDB$FIELD_LENGTH AS field_length,'
                  +'CSET.RDB$CHARACTER_SET_NAME AS field_charset '
                  +'FROM RDB$RELATION_FIELDS R '
                  +'LEFT JOIN RDB$FIELDS F ON R.RDB$FIELD_SOURCE = F.RDB$FIELD_NAME '
                  +'LEFT JOIN RDB$CHARACTER_SETS CSET ON F.RDB$CHARACTER_SET_ID = CSET.RDB$CHARACTER_SET_ID '
                  +'WHERE R.RDB$RELATION_NAME= :vTable '
                  +'ORDER BY R.RDB$FIELD_POSITION');
        q.Params.ByNameAsString['vTable']:= Self.TableName;
        q.Open;
        while not q.eof do
        begin
          AddFieldTypes;
          q.Next;
        end;
      finally
        q.Free;
        t.Free;
      end;
      if FListPSField.Count > 0 then
      begin
        FsqlUpdate :='UPDATE OR INSERT INTO ' + TableName +' (';
        for I := 0 to FListPSField.Count-1 do
        begin
          if FListPSField[I].GetFieldType= ftString
            then Self.FieldDefs.Add(FListPSField[I].fName, FListPSField[I].GetFieldType, StrToInt(FListPSField[I].FLength))
            else Self.FieldDefs.Add(FListPSField[I].fName, FListPSField[I].GetFieldType) ;
 
          if I<> FListPSField.Count-1
          then FsqlUpdate := FsqlUpdate + FListPSField[I].fName + ','
          else FsqlUpdate := FsqlUpdate + FListPSField[I].fName;
        end;
        FsqlUpdate := FsqlUpdate + ') VALUES (';
        for I := 0 to FListPSField.Count-1 do
        begin
          if I<> FListPSField.Count-1
          then FsqlUpdate := FsqlUpdate + ':s'+ FListPSField[I].fName + ','
          else FsqlUpdate := FsqlUpdate + ':s'+ FListPSField[I].fName;
        end;
        FsqlUpdate := FsqlUpdate + ') MATCHING(ID) ';
        sqlselect :='select * from ' + TableName; //+ ' where ID < 0' ;
        CreateDataSet;
      end;
    end;
  Except
    On E:Exception do
    begin
      raise Exception.Create('TFDUIBFBMemTable.SelfActiveDatas erreur: '+ e.Message);
    end;
  end;
end;
 
{*
@09/03/2018 AMN
@Methode: TFDUIBFBMemTable.ClearDatasField
@Motif: DataGet
*}
procedure TFDUIBFBMemTable.ClearDatasField;
begin
  Self.Active:= False;
  FieldDefs.Clear;
  FListPSField.Clear;
  sqlUpdate:= '';
  sqlSelect:= '';
end;
 
{*
@09/03/2018 AMN
@Methode: TFDUIBFBMemTable.Create
@Motif: DataGet
*}
constructor TFDUIBFBMemTable.Create(AOwner: TComponent);
begin
  inherited;
  FListPSField  := TObjectList<TPSField>.Create;
  AfterOpen     := odAfterOpen;
  BeforePost    := odBeforePost;
  BeforeDelete  := odBeforeDelete;;
end;
 
{*
@09/03/2018 AMN
@Methode: TFDUIBFBMemTable.Destroy
@Motif: DataGet
*}
destructor TFDUIBFBMemTable.Destroy;
begin
  FListPSField.Free;
  inherited;
end;
 
{*
@10/03/2018 AMN
@Methode: TFDUIBFBMemTable.GetIDuib
@Motif: DataGet
*}
function TFDUIBFBMemTable.GetIDuib(aType: string; Uibdatabase: Tuibdatabase): Integer;
var
  q : TUIBQuery;
  t : TUIBTransaction;
begin
  try
    q:=TUIBQuery.Create(nil);
    t:=TUIBTransaction.Create(nil);
    q.Transaction:=t;
    t.DataBase:=Uibdatabase;
    try
      with q do
      begin
        SQL.Add('SELECT GEN_ID (GEN_'+aType+'_ID, 1) from rdb$database');
        Open;
        Result:=q.Fields.AsInteger[0];
      end;
    finally
      FreeAndNil(q);
      FreeAndNil(t);
    end;
  Except
    on E:Exception do
    begin
      raise Exception.Create('TFDUIBFBMemTable.GetIDuib: '+ e.message);
    end;
  end;
end;
 
{*
@09/03/2018 AMN
@Methode: TFDUIBFBMemTable.getData
@Motif: DataGet
*}
procedure TFDUIBFBMemTable.getData(q: Tuibquery);
var
  I: Integer;
begin
  try
    EmptyDataSet;
    q.Open;
    while not q.eof do
    begin
      Self.Insert;
      for I := 0 to FListPSField.Count-1 do
      begin
        Self.FieldByName(FListPSField[I].FName).AsVariant:= q.Fields.ByNameAsVariant[FListPSField[I].FName];
      end;
      Self.Post;
      q.Next;
    end;
    q.Close;
  except
    on E:Exception do
    begin
      raise Exception.Create('TFDUIBFBMemTable.getData: '+ e.Message);
    end;
  end;
end;
 
{*
@09/03/2018 AMN
@Methode: TFDUIBFBMemTable.odAfterOpen
@Motif: DataGet
*}
procedure TFDUIBFBMemTable.odAfterOpen(DataSet: TDataSet);
var
  t: TUIBTransaction;
  q: TUIBQuery;
begin
  inherited;
  try
    if UIBDatabase<>nil then
    begin
      q:=TUIBQuery.Create(nil);
      t:=TUIBTransaction.Create(nil);
      try
        UpdateBase :=False;
        t.DataBase:=UIBDatabase;
        q.Transaction:=t;
        with q do
        begin
          SQL.Clear;
          q.SQL.Add(sqlSelect);
          q.FetchBlobs:=True;
          if SQL.Text='' then
          else
          getData(q);
          if not ModeConnected then UIBDatabase.Connected:=False;
        end;
      finally
        t.Free;
        q.Free;
        UpdateBase:=True;
      end;
    end;
  except
    on E:Exception do
    begin
      raise Exception.Create('TFDUIBFBMemTable.obAfterOpen: '+ e.Message);
    end;
  end;
end;
 
{*
@09/03/2018 AMN
@Methode: TFDUIBFBMemTable.odBeforeDelete
@Motif: DataGet
*}
procedure TFDUIBFBMemTable.odBeforeDelete(DataSet: TDataSet);
var
  t: TUIBTransaction;
  q: TUIBQuery;
begin
  inherited;
  try
    if UpdateBase=true then
    begin
      if UIBDatabase<>nil then
      begin
          q:=TUIBQuery.Create(nil);
          t:=TUIBTransaction.Create(nil);
        try
          UpdateBase :=False;
          t.DataBase:=UIBDatabase;
          q.Transaction:=t;
          with q do
          begin
            SQL.Clear;
            SQL.Add('DELETE FROM ' + TableName + ' WHERE  ID = :sID');
            Params.ByNameAsInteger['sID']:=FieldByName('ID').AsInteger ;
            q.Open;
            if not(ModeConnected) then UIBDatabase.Connected:=False;
          end;
        finally
          t.Free;
          q.Free;
          UpdateBase:=True;
        end;
      end;
    end;
  except
    On e:Exception do
      raise Exception.Create('TFDUIBFBMemTable.odBeforeDelete: '+e.Message);
  end;
end;
 
{*
@09/03/2018 AMN
@Methode: TFDUIBFBMemTable.odBeforePost
@Motif: DataGet
*}
procedure TFDUIBFBMemTable.odBeforePost(DataSet: TDataSet);
var
  t: TUIBTransaction;
  q: TUIBQuery;
  I: Integer;
begin
  inherited;
  try
    if UpdateBase=true then
    begin
      if UIBDatabase<>nil then
      begin
        q:=TUIBQuery.Create(nil);
        t:=TUIBTransaction.Create(nil);
        try
          UpdateBase :=False;
          t.DataBase:=UIBDatabase;
          q.Transaction:=t;
          if (FieldByName('ID').IsNull)or(FieldByName('ID').AsInteger<1)  then
            FieldByName('ID').AsInteger:=GetIDuib(TableName, UIBDatabase);
          q.SQL.Clear;
          q.SQL.Add(sqlUpdate) ;
          for I := 0 to FListPSField.Count-1 do
          begin
            q.Params.ByNameAsVariant['s'+ FListPSField[I].FName]:=FieldByName(FListPSField[I].FName).Value;
          end;
          q.Open;
          if not(ModeConnected) then UIBDatabase.Connected:=False;
        finally
          t.Free;
          q.Free;
          UpdateBase:=True;
        end;
      end;
    end;
  except
    On E:Exception do
    begin
      raise Exception.Create('TFDUIBFBMemTable.OdBeforePost: '+e.Message);
    end;
  end;
end;
 
{*
@09/03/2018 AMN
@Methode: TFDUIBFBMemTable.SetGetBDField
@Motif: DataGet
*}
procedure TFDUIBFBMemTable.SetGetBDField(const Value: Boolean);
begin
   if FGetBDField= False
    then ActiveDatas(nil)
    else ClearDatasField;
  FGetBDField := Value;
end;
 
{*
@09/03/2018 AMN
@Methode: TFDUIBFBMemTable.SetModeConnected
@Motif: DataGet
*}
procedure TFDUIBFBMemTable.SetModeConnected(const Value: Boolean);
begin
  FModeConnected := Value;
end;
 
{*
@09/03/2018 AMN
@Methode: TFDUIBFBMemTable.SetsqlSelect
@Motif: DataGet
*}
procedure TFDUIBFBMemTable.SetsqlSelect(const Value: string);
begin
  FsqlSelect := Value;
end;
 
{*
@10/03/2018 AMN
@Methode: TFDUIBFBMemTable.SetsqlUpdate
@Motif: DataGet
*}
procedure TFDUIBFBMemTable.SetsqlUpdate(const Value: string);
begin
  FsqlUpdate := Value;
end;
 
{*
@10/03/2018 AMN
@Methode: TFDUIBFBMemTable.SetTableName
@Motif: DataGet
*}
procedure TFDUIBFBMemTable.SetTableName(const Value: string);
begin
  FTableName := Value;
end;
 
{*
@09/03/2018 AMN
@Methode: TFDUIBFBMemTable.SetUIBDatabase
@Motif: DataGet
*}
procedure TFDUIBFBMemTable.SetUIBDatabase(const Value: TUIBDataBase);
begin
  FUIBDatabase := Value;
end;
 
{*
@09/03/2018 AMN
@Methode: TFDUIBFBMemTable.SetUpdateBase
@Motif: DataGet
*}
procedure TFDUIBFBMemTable.SetUpdateBase(const Value: Boolean);
begin
  FUpdateBase := Value;
end;
 
{ TPSField }
 
{*
@09/03/2018 AMN
@Methode: TPSField.GetFieldType
@Motif: DataGet
*}
function TPSField.GetFieldType: TFieldType;
begin
  if Self.FType = 'SMALLINT' then
  begin
    Result:= ftInteger;
    Exit;
  end;
  if Self.FType = 'INTEGER' then
  begin
    Result:= ftInteger;
    Exit;
  end;
   if Self.FType = 'INT64' then
  begin
    Result:= ftInteger;
    Exit;
  end;
  if Self.FType = 'QUAD' then
  begin
    Result:= ftFloat;
    Exit;
  end;
  if Self.FType = 'FLOAT' then
  begin
    Result:= ftFloat;
    Exit;
  end;
  if Self.FType = 'D_FLOAT' then
  begin
    Result:= ftFloat;
    Exit;
  end;
  if Self.FType = 'DOUBLE' then
  begin
    Result:= ftFloat;
    Exit;
  end;
  if Self.FType = 'DATE' then
  begin
    Result:= ftDate;
    Exit;
  end;
  if Self.FType = 'TIME' then
  begin
    Result:= ftTime;
    Exit;
  end;
  if Self.FType = 'TIMESTAMP' then
  begin
    Result:= ftDateTime;
    Exit;
  end;
  if Self.FType = 'CHAR' then
  begin
    Result:= ftString;
    Exit;
  end;
  if Self.FType = 'VARCHAR' then
  begin
    Result:= ftString;
    Exit;
  end;
  if Self.FType = 'CSTRING' then
  begin
    Result:= ftString;
    Exit;
  end;
  if Self.FType = 'BLOB' then
  begin
    Result:= ftBlob;
    Exit;
  end;
  if Self.FType = 'UNKNOWN' then
  begin
    Result:= ftVariant;
    Exit;
  end;
end;
 
end.