trunk/runtime/IBStoredProc.pas

{************************************************************************}
{                                                                        }
{       Borland Delphi Visual Component Library                          }
{       InterBase Express core components                                }
{                                                                        }
{       Copyright (c) 1998-2000 Inprise Corporation                      }
{                                                                        }
{    InterBase Express is based in part on the product                   }
{    Free IB Components, written by Gregory H. Deatz for                 }
{    Hoagland, Longo, Moran, Dunst & Doukas Company.                     }
{    Free IB Components is used under license.                           }
{                                                                        }
{    The contents of this file are subject to the InterBase              }
{    Public License Version 1.0 (the "License"); you may not             }
{    use this file except in compliance with the License. You            }
{    may obtain a copy of the License at http://www.Inprise.com/IPL.html }
{    Software distributed under the License is distributed on            }
{    an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either              }
{    express or implied. See the License for the specific language       }
{    governing rights and limitations under the License.                 }
{    The Original Code was created by InterBase Software Corporation     }
{       and its successors.                                              }
{    Portions created by Inprise Corporation are Copyright (C) Inprise   }
{       Corporation. All Rights Reserved.                                }
{    Contributor(s): Jeff Overcash                                       }
{                                                                        }
{    IBX For Lazarus (Firebird Express)                                  }
{    Contributor: Tony Whyman, MWA Software http://www.mwasoftware.co.uk }
{    Portions created by MWA Software are copyright McCallum Whyman      }
{    Associates Ltd 2011                                                 }
{                                                                        }
{************************************************************************}

unit IBStoredProc;

{$Mode Delphi}

{$codepage UTF8}

interface

uses SysUtils, Classes, DB, IB, IBDatabase, IBCustomDataSet,
     IBSQL, IBUtils;
     
{ TIBStoredProc }
type

  TIBStoredProc = class(TIBCustomDataSet)
  private
    FPackageName: string;
    FStmtHandle: IStatement;
    FProcName: string;
    FParams: TParams;
    FPrepared: Boolean;
    FNameList: TStrings;
    FPackageNameList: TStrings;
    function GetPackageNames: TStrings;
    procedure GetPackageNamesFromServer;
    procedure SetPackageName(AValue: string);
    procedure SetParamsList(Value: TParams);
    procedure FreeStatement;
    function GetStoredProcedureNames: TStrings;
    procedure GetStoredProcedureNamesFromServer;
    procedure CreateParamDesc;
    procedure SetParams;
    procedure SetParamsFromCursor;
    procedure GenerateSQL;
    procedure FetchDataIntoOutputParams;
    procedure ReadParamData(Reader: TReader);
    procedure WriteParamData(Writer: TWriter);
    procedure UpdateQuery;
  protected

    procedure DefineProperties(Filer: TFiler); override;
    procedure SetFiltered(Value: Boolean); override;
    procedure InitFieldDefs; override;
    function GetParamsCount: Word;
    procedure SetPrepared(Value: Boolean);
    procedure SetPrepare(Value: Boolean);
    procedure SetProcName(Value: string);
    procedure Disconnect; override;
    procedure InternalOpen; override;

  public
    constructor Create(AOwner: TComponent); override;
    destructor Destroy; override;
    procedure CopyParams(Value: TParams);
    procedure ExecProc;
    function ParamByName(const Value: string): TParam;
    procedure Prepare;
    procedure UnPrepare;
    property ParamCount: Word read GetParamsCount;
    property StmtHandle: IStatement read FStmtHandle;
    property Prepared: Boolean read FPrepared write SetPrepare;
    property StoredProcedureNames: TStrings read GetStoredProcedureNames;
    property PackageNames: TStrings read GetPackageNames;

  published
    property PackageName: string read FPackageName write SetPackageName;
    property StoredProcName: string read FProcName write SetProcName;
    property Params: TParams read FParams write SetParamsList;
    property Filtered;

    property BeforeDatabaseDisconnect;
    property AfterDatabaseDisconnect;
    property DatabaseFree;
    property BeforeTransactionEnd;
    property AfterTransactionEnd;
    property TransactionFree;
    property OnFilterRecord;
  end;

implementation

 uses  FBMessages;

{ TIBStoredProc }

constructor TIBStoredProc.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  FParams := TParams.Create (self);
  FNameList := TStringList.Create;
  FPackageNameList := TStringList.Create;
end;

destructor TIBStoredProc.Destroy;
begin
  Destroying;
  Disconnect;
  if assigned (FParams) then FParams.Free;
  if assigned(FNameList) then FNameList.Free;
  if assigned(FPackageNameList) then FPackageNameList.Free;
  inherited Destroy;
end;

procedure TIBStoredProc.Disconnect;
begin
  Close;
  UnPrepare;
end;

procedure TIBStoredProc.ExecProc;
var
  DidActivate: Boolean;
begin
  CheckInActive;
  if StoredProcName = '' then
    IBError(ibxeNoStoredProcName, [nil]);
  ActivateConnection;
  DidActivate := ActivateTransaction;
  try
    SetPrepared(True);
    if DataSource <> nil then SetParamsFromCursor;
    if FParams.Count > 0 then SetParams;
    InternalExecQuery;
    FetchDataIntoOutputParams;
  finally
    if DidActivate then
      DeactivateTransaction;
  end;
end;

procedure TIBStoredProc.SetProcName(Value: string);
begin
  if Value = FProcName then Exit;
  CheckInactive;
  FProcName := Value;
  UpdateQuery;
end;

function TIBStoredProc.GetParamsCount: Word;
begin
  Result := FParams.Count;
end;

procedure TIBStoredProc.SetFiltered(Value: Boolean);
begin
  if(Filtered <> Value) then
  begin
    inherited SetFiltered(value);
    if Active then
    begin
      Close;
      Open;
    end;
  end
  else
    inherited SetFiltered(value);
end;

 procedure TIBStoredProc.InitFieldDefs;
begin
  if (SelectSQL.Text = '') and (FProcName <> '') and (Database <> nil) then
     GenerateSQL;
  inherited InitFieldDefs;
end;

procedure TIBStoredProc.GenerateSQL;

var Params: TStringList;

  function FormatParameter(Dialect: Integer; Value: String): String;
  var j: integer;
  begin
    Value := Trim(Value);
    if Dialect = 1 then
       Result := AnsiUpperCase(Value)
    else
    begin
      j := 1;
      Value := Space2Underscore(AnsiUpperCase(Value));
      Result := Value;
      while Params.IndexOf(Result) <> -1 do
      begin
        Result := Value + IntToStr(j);
        Inc(j)
      end;
      Params.Add(Result)
    end;
  end;

  {Trim and make uppercase unless not an SQL Identifier when leave as it is}
  function FormatProcName(Dialect: Integer; Value: String): String;
  begin
    Value := Trim(Value);
    if (Dialect = 1) or IsSQLIdentifier(Value) then
       Result := AnsiUpperCase(Value)
    else
      Result := SQLSafeString(Value);
  end;

var
  Query : TIBSQL;
  input : string;
begin
  input := '';
  if FProcName = '' then
     IBError(ibxeNoStoredProcName,[nil]);
  ActivateConnection;
  Database.InternalTransaction.StartTransaction;
  Params := TStringList.Create;
  Query := TIBSQL.Create(self);
  try
    Query.Database := DataBase;
    Query.Transaction := Database.InternalTransaction;
    if DatabaseInfo.ODSMajorVersion < 12 then
      Query.SQL.Text := 'SELECT RDB$PARAMETER_NAME,  RDB$PARAMETER_TYPE ' + {do not localize}
                        'FROM RDB$PROCEDURE_PARAMETERS ' + {do not localize}
                        'WHERE RDB$PROCEDURE_NAME = ' + {do not localize}
                        '''' + FormatProcName(Database.SQLDialect, FProcName) + '''' +
                        ' ORDER BY RDB$PARAMETER_NUMBER' {do not localize}
    else
    if FPackageName = '' then
      Query.SQL.Text := 'SELECT RDB$PARAMETER_NAME,  RDB$PARAMETER_TYPE ' + {do not localize}
                        'FROM RDB$PROCEDURE_PARAMETERS ' + {do not localize}
                        'WHERE RDB$PROCEDURE_NAME = ' + {do not localize}
                        '''' + FormatProcName(Database.SQLDialect, FProcName) + '''' +
                        'AND RDB$PACKAGE_NAME IS NULL' + {do not localize}
                        ' ORDER BY RDB$PARAMETER_NUMBER' {do not localize}
    else
      Query.SQL.Text := 'SELECT RDB$PARAMETER_NAME,  RDB$PARAMETER_TYPE ' + {do not localize}
                        'FROM RDB$PROCEDURE_PARAMETERS ' + {do not localize}
                        'WHERE RDB$PROCEDURE_NAME = ' + {do not localize}
                        '''' + FormatProcName(Database.SQLDialect, FProcName) + '''' +
                        'AND RDB$PACKAGE_NAME = ' + {do not localize}
                        '''' + FormatProcName(Database.SQLDialect, FPackageName) + '''' +
                        ' ORDER BY RDB$PARAMETER_NUMBER'; {do not localize}
    Query.Prepare;
    Query.GoToFirstRecordOnExecute := False;
    Query.ExecQuery;
    while (not Query.EOF) and Query.Next do begin
      if (Query.FieldByName('RDB$PARAMETER_TYPE').AsInteger = 0) then begin {do not localize}
        if (input <> '') then
          input := input + ', :' +
            FormatParameter(Database.SQLDialect, Query.Current.ByName('RDB$PARAMETER_NAME').AsString) else {do not localize}
          input := ':' +
            FormatParameter(Database.SQLDialect, Query.Current.ByName('RDB$PARAMETER_NAME').AsString); {do not localize}
      end
    end;
    if FPackageName = '' then
      SelectSQL.Text := 'Execute Procedure ' + {do not localize}
                        QuoteIdentifierIfNeeded(Database.SQLDialect, FProcName) + ' ' + input
    else
      SelectSQL.Text := 'Execute Procedure ' + {do not localize}
                        QuoteIdentifierIfNeeded(Database.SQLDialect,FPackageName) + '.' +
                        QuoteIdentifierIfNeeded(Database.SQLDialect, FProcName) + ' ' + input;
//    writeln(SelectSQL.Text);
  finally
    Query.Free;
    Params.Free;
    Database.InternalTransaction.Commit;
  end;
end;

procedure TIBStoredProc.CreateParamDesc;
var
  i : integer;
  DataType : TFieldType;
begin
  DataType := ftUnknown;
  for i := 0 to QSelect.MetaData.Count - 1 do begin
  case QSelect.MetaData[i].SQLtype of
    SQL_TYPE_DATE: DataType := ftDate;
    SQL_TYPE_TIME: DataType := ftTime;
    SQL_TIMESTAMP: DataType := ftDateTime;
    SQL_SHORT:
      if QSelect.MetaData[i].getScale = 0 then
        DataType := ftSmallInt
      else
        DataType := ftBCD;
    SQL_LONG:
      if QSelect.MetaData[i].getScale = 0 then
        DataType := ftInteger
      else if QSelect.MetaData[i].getScale >= -4 then
        DataType := ftBCD
      else
        DataType := ftFloat;
    SQL_INT64:
      if QSelect.MetaData[i].getScale = 0 then
        DataType := ftLargeInt
      else if QSelect.MetaData[i].getScale >= -4 then
        DataType := ftBCD
      else
        DataType := ftFloat;
    SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT: DataType := ftFloat;
    SQL_BOOLEAN:
      DataType := ftBoolean;
    SQL_TEXT: DataType := ftString;
    SQL_VARYING:
      if QSelect.MetaData[i].GetSize < 1024 then
        DataType := ftString
      else DataType := ftBlob;
    SQL_BLOB, SQL_ARRAY, SQL_QUAD: DataType := ftBlob;
    end;
    FParams.CreateParam(DataType, Trim(QSelect.MetaData[i].Name), ptOutput);
  end;

  DataType := ftUnknown;
  for i := 0 to QSelect.Params.Count - 1 do begin
  case QSelect.Params[i].GetSQLtype of
    SQL_TYPE_DATE: DataType := ftDate;
    SQL_TYPE_TIME: DataType := ftTime;
    SQL_TIMESTAMP: DataType := ftDateTime;
    SQL_SHORT:
      if QSelect.Params[i].getScale = 0 then
        DataType := ftSmallInt
      else
        DataType := ftBCD;
    SQL_LONG:
      if QSelect.Params[i].getScale = 0 then
        DataType := ftInteger
      else if QSelect.Params[i].getScale >= -4 then
        DataType := ftBCD
      else DataType := ftFloat;
    SQL_INT64:
      if QSelect.Params[i].getScale = 0 then
        DataType := ftLargeInt
      else if QSelect.Params[i].getScale >= -4 then
        DataType := ftBCD
      else DataType := ftFloat;
    SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT: DataType := ftFloat;
    SQL_BOOLEAN:
      DataType := ftBoolean;
    SQL_TEXT: DataType := ftString;
    SQL_VARYING:
      if QSelect.Params[i].GetSize < 1024 then
        DataType := ftString
      else DataType := ftBlob;
    SQL_BLOB, SQL_ARRAY, SQL_QUAD: DataType := ftBlob;
    end;
    FParams.CreateParam(DataType, Trim(QSelect.Params[i].Name), ptInput);
  end;
end;

procedure TIBStoredProc.SetPrepared(Value: Boolean);
begin
  if Prepared <> Value then
  begin
    if Value then
      try
        if SelectSQL.Text = '' then GenerateSQL;
        InternalPrepare;
        if FParams.Count = 0 then CreateParamDesc;
        FPrepared := True;
      except
        FreeStatement;
        raise;
      end
    else FreeStatement;
  end;

end;

procedure TIBStoredProc.Prepare;
begin
  SetPrepared(True);
end;

procedure TIBStoredProc.UnPrepare;
begin
  SetPrepared(False);
end;

procedure TIBStoredProc.FreeStatement;
begin
  InternalUnPrepare;
  FPrepared := False;
end;

procedure TIBStoredProc.SetPrepare(Value: Boolean);
begin
  if Value then Prepare
  else UnPrepare;
end;

procedure TIBStoredProc.CopyParams(Value: TParams);
begin
  if not Prepared and (FParams.Count = 0) then
  try
    Prepare;
    Value.Assign(FParams);
  finally
    UnPrepare;
  end else
    Value.Assign(FParams);
end;

procedure TIBStoredProc.SetParamsList(Value: TParams);
begin
  CheckInactive;
  if Prepared then
  begin
    SetPrepared(False);
    FParams.Assign(Value);
    SetPrepared(True);
  end else
    FParams.Assign(Value);
end;

procedure TIBStoredProc.SetPackageName(AValue: string);
begin
  if FPackageName = AValue then Exit;
  CheckInactive;
  FPackageName := AValue;
  FProcName := '';
  UpdateQuery;
end;

procedure TIBStoredProc.GetPackageNamesFromServer;
var
  Query : TIBSQL;
begin
  ActivateConnection;
  if (csReading in ComponentState) or (DatabaseInfo.ODSMajorVersion < 12) then Exit;
  Database.InternalTransaction.StartTransaction;
  Query := TIBSQL.Create(self);
  try
    Query.GoToFirstRecordOnExecute := False;
    Query.Database := DataBase;
    Query.Transaction := Database.InternalTransaction;
    Query.SQL.Text := 'Select distinct RDB$PACKAGE_NAME from RDB$PROCEDURES Where RDB$PACKAGE_NAME is not null'; {do not localize}
    Query.Prepare;
    Query.ExecQuery;
    while (not Query.EOF) and Query.Next do
      FPackageNameList.Add(TrimRight(Query.Current.ByName('RDB$PACKAGE_NAME').AsString)); {do not localize}
  finally
    Query.Free;
    Database.InternalTransaction.Commit;
  end;
end;

function TIBStoredProc.GetPackageNames: TStrings;
begin
  FPackageNameList.Clear;
  GetPackageNamesFromServer;
  Result := FPackageNameList;
end;

function TIBStoredProc.ParamByName(const Value: string): TParam;
begin
  Prepare;
  Result := FParams.ParamByName(Value);
end;

function TIBStoredProc.GetStoredProcedureNames: TStrings;
begin
  FNameList.clear;
  GetStoredProcedureNamesFromServer;
  Result := FNameList;
end;

procedure TIBStoredProc.GetStoredProcedureNamesFromServer;
var
  Query : TIBSQL;
begin
  if not (csReading in ComponentState) then begin
    ActivateConnection;
    Database.InternalTransaction.StartTransaction;
    Query := TIBSQL.Create(self);
    try
      Query.GoToFirstRecordOnExecute := False;
      Query.Database := DataBase;
      Query.Transaction := Database.InternalTransaction;
      if DatabaseInfo.ODSMajorVersion < 12 then
        Query.SQL.Text := 'Select RDB$PROCEDURE_NAME from RDB$PROCEDURES' {do not localize}
      else
      if FPackageName = '' then
        Query.SQL.Text := 'Select RDB$PROCEDURE_NAME from RDB$PROCEDURES Where RDB$PACKAGE_NAME is NULL' {do not localize}
      else
        Query.SQL.Text := 'Select RDB$PROCEDURE_NAME from RDB$PROCEDURES Where RDB$PACKAGE_NAME = ''' + {do not localize}
                          SQLSafeString(FPackageName) + '''';
      Query.Prepare;
      Query.ExecQuery;
      while (not Query.EOF) and Query.Next do
        FNameList.Add(TrimRight(Query.Current.ByName('RDB$PROCEDURE_NAME').AsString)); {do not localize}
    finally
      Query.Free;
      Database.InternalTransaction.Commit;
    end;
  end;
end;

procedure TIBStoredProc.SetParams;
var
i : integer;
j: integer;
begin
  i := 0;
  for j := 0 to FParams.Count - 1 do
  begin
    if (Params[j].ParamType <> ptInput) then
      continue;
    if not Params[j].Bound then
      IBError(ibxeRequiredParamNotSet, [Params[j].Name]);
    if Params[j].IsNull then
      SQLParams[i].IsNull := True
    else begin
      SQLParams[i].IsNull := False;
      case Params[j].DataType of
        ftString:
          SQLParams[i].AsString := Params[j].AsString;
        ftSmallint, ftWord:
          SQLParams[i].AsShort := Params[j].AsSmallInt;
        ftBoolean:
           SQLParams[i].AsBoolean := Params[j].AsBoolean;
        ftInteger:
          SQLParams[i].AsLong := Params[j].AsInteger;
        ftLargeInt:
          SQLParams[i].AsInt64 := Params[j].AsLargeInt;
        ftFloat, ftCurrency:
         SQLParams[i].AsDouble := Params[j].AsFloat;
        ftBCD:
          SQLParams[i].AsCurrency := Params[j].AsCurrency;
        ftDate:
          SQLParams[i].AsDate := Params[j].AsDateTime;
        ftTime:
          SQLParams[i].AsTime := Params[j].AsDateTime;
        ftDateTime:
          SQLParams[i].AsDateTime := Params[j].AsDateTime;
        ftBlob, ftMemo:
          SQLParams[i].AsString := Params[j].AsString;
        else
          IBError(ibxeNotSupported, [nil]);
      end;
    end;
    Inc(i);
  end;
end;

procedure TIBStoredProc.SetParamsFromCursor;
var
  I: Integer;
  DataSet: TDataSet;
begin
  if DataSource <> nil then
  begin
    DataSet := DataSource.DataSet;
    if DataSet <> nil then
    begin
      DataSet.FieldDefs.Update;
      for I := 0 to FParams.Count - 1 do
        with FParams[I] do
          if (not Bound) and
            ((ParamType = ptInput) or (ParamType =  ptInputOutput)) then
            AssignField(DataSet.FieldByName(Name));
    end;
  end;
end;

procedure TIBStoredProc.FetchDataIntoOutputParams;
var
i,j : Integer;
begin
  j := 0;
  for i := 0 to FParams.Count - 1 do
    with Params[I] do
      if ParamType = ptOutput then begin
         Value := QSelect.Fields[j].Value;
         Inc(j);
      end;
end;

procedure TIBStoredProc.InternalOpen;
begin
  IBError(ibxeIsAExecuteProcedure,[nil]);
end;

procedure TIBStoredProc.DefineProperties(Filer: TFiler);

  function WriteData: Boolean;
  begin
    if Filer.Ancestor <> nil then
      Result := not FParams.IsEqual(TIBStoredProc(Filer.Ancestor).FParams) else
      Result := FParams.Count > 0;
  end;

begin
  inherited DefineProperties(Filer);
  Filer.DefineProperty('ParamData', ReadParamData, WriteParamData, WriteData); {do not localize}
end;

procedure TIBStoredProc.WriteParamData(Writer: TWriter);
begin
  Writer.WriteCollection(Params);
end;

procedure TIBStoredProc.UpdateQuery;
begin
  if not (csReading in ComponentState) then
  begin
      FreeStatement;
      FParams.Clear;
      if (FProcName <> '') and (Database <> nil) then
      begin
        GenerateSQL;
        if csDesigning in ComponentState then
        begin
          Prepare;  {Fills the Params collection}
          UnPrepare;
        end;
      end;
  end
  else
  begin
    if (FProcName <> '') and (Database <> nil) then
    GenerateSQL;
  end;
end;

procedure TIBStoredProc.ReadParamData(Reader: TReader);
begin
  Reader.ReadValue;
  Reader.ReadCollection(Params);
end;

end.
Revision:	107
Committed:	Thu Jan 18 14:37:40 2018 UTC (6 years, 3 months ago) by tony
Content type:	text/x-pascal
File size:	19984 byte(s)
Log Message:	Fixes merged
#	User	Rev	Content
1	tony	33	{************************************************************************}
2			{ }
3			{ Borland Delphi Visual Component Library }
4			{ InterBase Express core components }
5			{ }
6			{ Copyright (c) 1998-2000 Inprise Corporation }
7			{ }
8			{ InterBase Express is based in part on the product }
9			{ Free IB Components, written by Gregory H. Deatz for }
10			{ Hoagland, Longo, Moran, Dunst & Doukas Company. }
11			{ Free IB Components is used under license. }
12			{ }
13			{ The contents of this file are subject to the InterBase }
14			{ Public License Version 1.0 (the "License"); you may not }
15			{ use this file except in compliance with the License. You }
16			{ may obtain a copy of the License at http://www.Inprise.com/IPL.html }
17			{ Software distributed under the License is distributed on }
18			{ an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either }
19			{ express or implied. See the License for the specific language }
20			{ governing rights and limitations under the License. }
21			{ The Original Code was created by InterBase Software Corporation }
22			{ and its successors. }
23			{ Portions created by Inprise Corporation are Copyright (C) Inprise }
24			{ Corporation. All Rights Reserved. }
25			{ Contributor(s): Jeff Overcash }
26			{ }
27			{ IBX For Lazarus (Firebird Express) }
28			{ Contributor: Tony Whyman, MWA Software http://www.mwasoftware.co.uk }
29			{ Portions created by MWA Software are copyright McCallum Whyman }
30			{ Associates Ltd 2011 }
31			{ }
32			{************************************************************************}
33
34			unit IBStoredProc;
35
36			{$Mode Delphi}
37
38	tony	39	{$codepage UTF8}
39
40	tony	33	interface
41
42			uses SysUtils, Classes, DB, IB, IBDatabase, IBCustomDataSet,
43	tony	45	IBSQL, IBUtils;
44	tony	33
45			{ TIBStoredProc }
46			type
47
48			TIBStoredProc = class(TIBCustomDataSet)
49			private
50	tony	107	FPackageName: string;
51	tony	45	FStmtHandle: IStatement;
52	tony	33	FProcName: string;
53			FParams: TParams;
54			FPrepared: Boolean;
55			FNameList: TStrings;
56	tony	107	FPackageNameList: TStrings;
57			function GetPackageNames: TStrings;
58			procedure GetPackageNamesFromServer;
59			procedure SetPackageName(AValue: string);
60	tony	33	procedure SetParamsList(Value: TParams);
61			procedure FreeStatement;
62			function GetStoredProcedureNames: TStrings;
63			procedure GetStoredProcedureNamesFromServer;
64			procedure CreateParamDesc;
65			procedure SetParams;
66			procedure SetParamsFromCursor;
67			procedure GenerateSQL;
68			procedure FetchDataIntoOutputParams;
69			procedure ReadParamData(Reader: TReader);
70			procedure WriteParamData(Writer: TWriter);
71	tony	107	procedure UpdateQuery;
72	tony	33	protected
73
74			procedure DefineProperties(Filer: TFiler); override;
75			procedure SetFiltered(Value: Boolean); override;
76			procedure InitFieldDefs; override;
77			function GetParamsCount: Word;
78			procedure SetPrepared(Value: Boolean);
79			procedure SetPrepare(Value: Boolean);
80			procedure SetProcName(Value: string);
81			procedure Disconnect; override;
82			procedure InternalOpen; override;
83
84			public
85			constructor Create(AOwner: TComponent); override;
86			destructor Destroy; override;
87			procedure CopyParams(Value: TParams);
88			procedure ExecProc;
89			function ParamByName(const Value: string): TParam;
90			procedure Prepare;
91			procedure UnPrepare;
92			property ParamCount: Word read GetParamsCount;
93	tony	45	property StmtHandle: IStatement read FStmtHandle;
94	tony	33	property Prepared: Boolean read FPrepared write SetPrepare;
95			property StoredProcedureNames: TStrings read GetStoredProcedureNames;
96	tony	107	property PackageNames: TStrings read GetPackageNames;
97	tony	33
98			published
99	tony	107	property PackageName: string read FPackageName write SetPackageName;
100	tony	33	property StoredProcName: string read FProcName write SetProcName;
101			property Params: TParams read FParams write SetParamsList;
102			property Filtered;
103
104			property BeforeDatabaseDisconnect;
105			property AfterDatabaseDisconnect;
106			property DatabaseFree;
107			property BeforeTransactionEnd;
108			property AfterTransactionEnd;
109			property TransactionFree;
110			property OnFilterRecord;
111			end;
112
113			implementation
114
115	tony	45	uses FBMessages;
116	tony	33
117			{ TIBStoredProc }
118
119			constructor TIBStoredProc.Create(AOwner: TComponent);
120			begin
121			inherited Create(AOwner);
122			FParams := TParams.Create (self);
123			FNameList := TStringList.Create;
124	tony	107	FPackageNameList := TStringList.Create;
125	tony	33	end;
126
127			destructor TIBStoredProc.Destroy;
128			begin
129	tony	45	Destroying;
130			Disconnect;
131			if assigned (FParams) then FParams.Free;
132	tony	107	if assigned(FNameList) then FNameList.Free;
133			if assigned(FPackageNameList) then FPackageNameList.Free;
134	tony	33	inherited Destroy;
135			end;
136
137			procedure TIBStoredProc.Disconnect;
138			begin
139			Close;
140			UnPrepare;
141			end;
142
143			procedure TIBStoredProc.ExecProc;
144			var
145			DidActivate: Boolean;
146			begin
147			CheckInActive;
148			if StoredProcName = '' then
149			IBError(ibxeNoStoredProcName, [nil]);
150			ActivateConnection;
151			DidActivate := ActivateTransaction;
152			try
153			SetPrepared(True);
154			if DataSource <> nil then SetParamsFromCursor;
155			if FParams.Count > 0 then SetParams;
156			InternalExecQuery;
157			FetchDataIntoOutputParams;
158			finally
159			if DidActivate then
160			DeactivateTransaction;
161			end;
162			end;
163
164			procedure TIBStoredProc.SetProcName(Value: string);
165			begin
166	tony	107	if Value = FProcName then Exit;
167			CheckInactive;
168			FProcName := Value;
169			UpdateQuery;
170	tony	33	end;
171
172			function TIBStoredProc.GetParamsCount: Word;
173			begin
174			Result := FParams.Count;
175			end;
176
177			procedure TIBStoredProc.SetFiltered(Value: Boolean);
178			begin
179			if(Filtered <> Value) then
180			begin
181			inherited SetFiltered(value);
182			if Active then
183			begin
184			Close;
185			Open;
186			end;
187			end
188			else
189			inherited SetFiltered(value);
190			end;
191
192			procedure TIBStoredProc.InitFieldDefs;
193			begin
194	tony	107	if (SelectSQL.Text = '') and (FProcName <> '') and (Database <> nil) then
195	tony	33	GenerateSQL;
196			inherited InitFieldDefs;
197			end;
198
199			procedure TIBStoredProc.GenerateSQL;
200
201			var Params: TStringList;
202
203			function FormatParameter(Dialect: Integer; Value: String): String;
204			var j: integer;
205			begin
206			Value := Trim(Value);
207			if Dialect = 1 then
208			Result := AnsiUpperCase(Value)
209			else
210			begin
211			j := 1;
212			Value := Space2Underscore(AnsiUpperCase(Value));
213			Result := Value;
214			while Params.IndexOf(Result) <> -1 do
215			begin
216			Result := Value + IntToStr(j);
217			Inc(j)
218			end;
219			Params.Add(Result)
220			end;
221			end;
222
223	tony	107	{Trim and make uppercase unless not an SQL Identifier when leave as it is}
224			function FormatProcName(Dialect: Integer; Value: String): String;
225			begin
226			Value := Trim(Value);
227			if (Dialect = 1) or IsSQLIdentifier(Value) then
228			Result := AnsiUpperCase(Value)
229			else
230			Result := SQLSafeString(Value);
231			end;
232
233	tony	33	var
234			Query : TIBSQL;
235			input : string;
236			begin
237			input := '';
238			if FProcName = '' then
239			IBError(ibxeNoStoredProcName,[nil]);
240			ActivateConnection;
241			Database.InternalTransaction.StartTransaction;
242			Params := TStringList.Create;
243			Query := TIBSQL.Create(self);
244			try
245			Query.Database := DataBase;
246			Query.Transaction := Database.InternalTransaction;
247	tony	107	if DatabaseInfo.ODSMajorVersion < 12 then
248			Query.SQL.Text := 'SELECT RDB$PARAMETER_NAME, RDB$PARAMETER_TYPE ' + {do not localize}
249			'FROM RDB$PROCEDURE_PARAMETERS ' + {do not localize}
250			'WHERE RDB$PROCEDURE_NAME = ' + {do not localize}
251			'''' + FormatProcName(Database.SQLDialect, FProcName) + '''' +
252			' ORDER BY RDB$PARAMETER_NUMBER' {do not localize}
253			else
254			if FPackageName = '' then
255			Query.SQL.Text := 'SELECT RDB$PARAMETER_NAME, RDB$PARAMETER_TYPE ' + {do not localize}
256			'FROM RDB$PROCEDURE_PARAMETERS ' + {do not localize}
257			'WHERE RDB$PROCEDURE_NAME = ' + {do not localize}
258			'''' + FormatProcName(Database.SQLDialect, FProcName) + '''' +
259			'AND RDB$PACKAGE_NAME IS NULL' + {do not localize}
260			' ORDER BY RDB$PARAMETER_NUMBER' {do not localize}
261			else
262			Query.SQL.Text := 'SELECT RDB$PARAMETER_NAME, RDB$PARAMETER_TYPE ' + {do not localize}
263			'FROM RDB$PROCEDURE_PARAMETERS ' + {do not localize}
264			'WHERE RDB$PROCEDURE_NAME = ' + {do not localize}
265			'''' + FormatProcName(Database.SQLDialect, FProcName) + '''' +
266			'AND RDB$PACKAGE_NAME = ' + {do not localize}
267			'''' + FormatProcName(Database.SQLDialect, FPackageName) + '''' +
268			' ORDER BY RDB$PARAMETER_NUMBER'; {do not localize}
269	tony	33	Query.Prepare;
270			Query.GoToFirstRecordOnExecute := False;
271			Query.ExecQuery;
272	tony	45	while (not Query.EOF) and Query.Next do begin
273			if (Query.FieldByName('RDB$PARAMETER_TYPE').AsInteger = 0) then begin {do not localize}
274	tony	33	if (input <> '') then
275			input := input + ', :' +
276			FormatParameter(Database.SQLDialect, Query.Current.ByName('RDB$PARAMETER_NAME').AsString) else {do not localize}
277			input := ':' +
278			FormatParameter(Database.SQLDialect, Query.Current.ByName('RDB$PARAMETER_NAME').AsString); {do not localize}
279			end
280			end;
281	tony	107	if FPackageName = '' then
282			SelectSQL.Text := 'Execute Procedure ' + {do not localize}
283			QuoteIdentifierIfNeeded(Database.SQLDialect, FProcName) + ' ' + input
284			else
285			SelectSQL.Text := 'Execute Procedure ' + {do not localize}
286			QuoteIdentifierIfNeeded(Database.SQLDialect,FPackageName) + '.' +
287			QuoteIdentifierIfNeeded(Database.SQLDialect, FProcName) + ' ' + input;
288			// writeln(SelectSQL.Text);
289	tony	33	finally
290			Query.Free;
291			Params.Free;
292			Database.InternalTransaction.Commit;
293			end;
294			end;
295
296			procedure TIBStoredProc.CreateParamDesc;
297			var
298			i : integer;
299			DataType : TFieldType;
300			begin
301			DataType := ftUnknown;
302	tony	45	for i := 0 to QSelect.MetaData.Count - 1 do begin
303			case QSelect.MetaData[i].SQLtype of
304	tony	33	SQL_TYPE_DATE: DataType := ftDate;
305			SQL_TYPE_TIME: DataType := ftTime;
306			SQL_TIMESTAMP: DataType := ftDateTime;
307			SQL_SHORT:
308	tony	45	if QSelect.MetaData[i].getScale = 0 then
309	tony	33	DataType := ftSmallInt
310			else
311			DataType := ftBCD;
312			SQL_LONG:
313	tony	45	if QSelect.MetaData[i].getScale = 0 then
314	tony	33	DataType := ftInteger
315	tony	45	else if QSelect.MetaData[i].getScale >= -4 then
316	tony	33	DataType := ftBCD
317			else
318			DataType := ftFloat;
319			SQL_INT64:
320	tony	45	if QSelect.MetaData[i].getScale = 0 then
321	tony	33	DataType := ftLargeInt
322	tony	45	else if QSelect.MetaData[i].getScale >= -4 then
323	tony	33	DataType := ftBCD
324			else
325			DataType := ftFloat;
326			SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT: DataType := ftFloat;
327			SQL_BOOLEAN:
328			DataType := ftBoolean;
329			SQL_TEXT: DataType := ftString;
330			SQL_VARYING:
331	tony	45	if QSelect.MetaData[i].GetSize < 1024 then
332	tony	33	DataType := ftString
333			else DataType := ftBlob;
334			SQL_BLOB, SQL_ARRAY, SQL_QUAD: DataType := ftBlob;
335			end;
336	tony	45	FParams.CreateParam(DataType, Trim(QSelect.MetaData[i].Name), ptOutput);
337	tony	33	end;
338
339			DataType := ftUnknown;
340			for i := 0 to QSelect.Params.Count - 1 do begin
341	tony	45	case QSelect.Params[i].GetSQLtype of
342	tony	33	SQL_TYPE_DATE: DataType := ftDate;
343			SQL_TYPE_TIME: DataType := ftTime;
344			SQL_TIMESTAMP: DataType := ftDateTime;
345			SQL_SHORT:
346	tony	45	if QSelect.Params[i].getScale = 0 then
347	tony	33	DataType := ftSmallInt
348			else
349			DataType := ftBCD;
350			SQL_LONG:
351	tony	45	if QSelect.Params[i].getScale = 0 then
352	tony	33	DataType := ftInteger
353	tony	45	else if QSelect.Params[i].getScale >= -4 then
354	tony	33	DataType := ftBCD
355			else DataType := ftFloat;
356			SQL_INT64:
357	tony	45	if QSelect.Params[i].getScale = 0 then
358	tony	33	DataType := ftLargeInt
359	tony	45	else if QSelect.Params[i].getScale >= -4 then
360	tony	33	DataType := ftBCD
361			else DataType := ftFloat;
362			SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT: DataType := ftFloat;
363			SQL_BOOLEAN:
364			DataType := ftBoolean;
365			SQL_TEXT: DataType := ftString;
366			SQL_VARYING:
367	tony	45	if QSelect.Params[i].GetSize < 1024 then
368	tony	33	DataType := ftString
369			else DataType := ftBlob;
370			SQL_BLOB, SQL_ARRAY, SQL_QUAD: DataType := ftBlob;
371			end;
372			FParams.CreateParam(DataType, Trim(QSelect.Params[i].Name), ptInput);
373			end;
374			end;
375
376			procedure TIBStoredProc.SetPrepared(Value: Boolean);
377			begin
378			if Prepared <> Value then
379			begin
380			if Value then
381			try
382			if SelectSQL.Text = '' then GenerateSQL;
383			InternalPrepare;
384			if FParams.Count = 0 then CreateParamDesc;
385			FPrepared := True;
386			except
387			FreeStatement;
388			raise;
389			end
390			else FreeStatement;
391			end;
392
393			end;
394
395			procedure TIBStoredProc.Prepare;
396			begin
397			SetPrepared(True);
398			end;
399
400			procedure TIBStoredProc.UnPrepare;
401			begin
402			SetPrepared(False);
403			end;
404
405			procedure TIBStoredProc.FreeStatement;
406			begin
407			InternalUnPrepare;
408			FPrepared := False;
409			end;
410
411			procedure TIBStoredProc.SetPrepare(Value: Boolean);
412			begin
413			if Value then Prepare
414			else UnPrepare;
415			end;
416
417			procedure TIBStoredProc.CopyParams(Value: TParams);
418			begin
419			if not Prepared and (FParams.Count = 0) then
420			try
421			Prepare;
422			Value.Assign(FParams);
423			finally
424			UnPrepare;
425			end else
426			Value.Assign(FParams);
427			end;
428
429			procedure TIBStoredProc.SetParamsList(Value: TParams);
430			begin
431			CheckInactive;
432			if Prepared then
433			begin
434			SetPrepared(False);
435			FParams.Assign(Value);
436			SetPrepared(True);
437			end else
438			FParams.Assign(Value);
439			end;
440
441	tony	107	procedure TIBStoredProc.SetPackageName(AValue: string);
442			begin
443			if FPackageName = AValue then Exit;
444			CheckInactive;
445			FPackageName := AValue;
446			FProcName := '';
447			UpdateQuery;
448			end;
449
450			procedure TIBStoredProc.GetPackageNamesFromServer;
451			var
452			Query : TIBSQL;
453			begin
454			ActivateConnection;
455			if (csReading in ComponentState) or (DatabaseInfo.ODSMajorVersion < 12) then Exit;
456			Database.InternalTransaction.StartTransaction;
457			Query := TIBSQL.Create(self);
458			try
459			Query.GoToFirstRecordOnExecute := False;
460			Query.Database := DataBase;
461			Query.Transaction := Database.InternalTransaction;
462			Query.SQL.Text := 'Select distinct RDB$PACKAGE_NAME from RDB$PROCEDURES Where RDB$PACKAGE_NAME is not null'; {do not localize}
463			Query.Prepare;
464			Query.ExecQuery;
465			while (not Query.EOF) and Query.Next do
466			FPackageNameList.Add(TrimRight(Query.Current.ByName('RDB$PACKAGE_NAME').AsString)); {do not localize}
467			finally
468			Query.Free;
469			Database.InternalTransaction.Commit;
470			end;
471			end;
472
473			function TIBStoredProc.GetPackageNames: TStrings;
474			begin
475			FPackageNameList.Clear;
476			GetPackageNamesFromServer;
477			Result := FPackageNameList;
478			end;
479
480	tony	33	function TIBStoredProc.ParamByName(const Value: string): TParam;
481			begin
482			Prepare;
483			Result := FParams.ParamByName(Value);
484			end;
485
486			function TIBStoredProc.GetStoredProcedureNames: TStrings;
487			begin
488			FNameList.clear;
489			GetStoredProcedureNamesFromServer;
490			Result := FNameList;
491			end;
492
493			procedure TIBStoredProc.GetStoredProcedureNamesFromServer;
494			var
495			Query : TIBSQL;
496			begin
497			if not (csReading in ComponentState) then begin
498			ActivateConnection;
499			Database.InternalTransaction.StartTransaction;
500			Query := TIBSQL.Create(self);
501			try
502			Query.GoToFirstRecordOnExecute := False;
503			Query.Database := DataBase;
504			Query.Transaction := Database.InternalTransaction;
505	tony	107	if DatabaseInfo.ODSMajorVersion < 12 then
506			Query.SQL.Text := 'Select RDB$PROCEDURE_NAME from RDB$PROCEDURES' {do not localize}
507			else
508			if FPackageName = '' then
509			Query.SQL.Text := 'Select RDB$PROCEDURE_NAME from RDB$PROCEDURES Where RDB$PACKAGE_NAME is NULL' {do not localize}
510			else
511			Query.SQL.Text := 'Select RDB$PROCEDURE_NAME from RDB$PROCEDURES Where RDB$PACKAGE_NAME = ''' + {do not localize}
512			SQLSafeString(FPackageName) + '''';
513	tony	33	Query.Prepare;
514			Query.ExecQuery;
515	tony	45	while (not Query.EOF) and Query.Next do
516	tony	33	FNameList.Add(TrimRight(Query.Current.ByName('RDB$PROCEDURE_NAME').AsString)); {do not localize}
517			finally
518			Query.Free;
519			Database.InternalTransaction.Commit;
520			end;
521			end;
522			end;
523
524			procedure TIBStoredProc.SetParams;
525			var
526			i : integer;
527			j: integer;
528			begin
529			i := 0;
530			for j := 0 to FParams.Count - 1 do
531			begin
532			if (Params[j].ParamType <> ptInput) then
533			continue;
534			if not Params[j].Bound then
535			IBError(ibxeRequiredParamNotSet, [Params[j].Name]);
536			if Params[j].IsNull then
537			SQLParams[i].IsNull := True
538			else begin
539			SQLParams[i].IsNull := False;
540			case Params[j].DataType of
541			ftString:
542			SQLParams[i].AsString := Params[j].AsString;
543			ftSmallint, ftWord:
544			SQLParams[i].AsShort := Params[j].AsSmallInt;
545			ftBoolean:
546			SQLParams[i].AsBoolean := Params[j].AsBoolean;
547			ftInteger:
548			SQLParams[i].AsLong := Params[j].AsInteger;
549			ftLargeInt:
550			SQLParams[i].AsInt64 := Params[j].AsLargeInt;
551			ftFloat, ftCurrency:
552			SQLParams[i].AsDouble := Params[j].AsFloat;
553			ftBCD:
554			SQLParams[i].AsCurrency := Params[j].AsCurrency;
555			ftDate:
556			SQLParams[i].AsDate := Params[j].AsDateTime;
557			ftTime:
558			SQLParams[i].AsTime := Params[j].AsDateTime;
559			ftDateTime:
560			SQLParams[i].AsDateTime := Params[j].AsDateTime;
561			ftBlob, ftMemo:
562			SQLParams[i].AsString := Params[j].AsString;
563			else
564			IBError(ibxeNotSupported, [nil]);
565			end;
566			end;
567			Inc(i);
568			end;
569			end;
570
571			procedure TIBStoredProc.SetParamsFromCursor;
572			var
573			I: Integer;
574			DataSet: TDataSet;
575			begin
576			if DataSource <> nil then
577			begin
578			DataSet := DataSource.DataSet;
579			if DataSet <> nil then
580			begin
581			DataSet.FieldDefs.Update;
582			for I := 0 to FParams.Count - 1 do
583			with FParams[I] do
584			if (not Bound) and
585			((ParamType = ptInput) or (ParamType = ptInputOutput)) then
586			AssignField(DataSet.FieldByName(Name));
587			end;
588			end;
589			end;
590
591			procedure TIBStoredProc.FetchDataIntoOutputParams;
592			var
593			i,j : Integer;
594			begin
595			j := 0;
596			for i := 0 to FParams.Count - 1 do
597			with Params[I] do
598			if ParamType = ptOutput then begin
599			Value := QSelect.Fields[j].Value;
600			Inc(j);
601			end;
602			end;
603
604			procedure TIBStoredProc.InternalOpen;
605			begin
606			IBError(ibxeIsAExecuteProcedure,[nil]);
607			end;
608
609			procedure TIBStoredProc.DefineProperties(Filer: TFiler);
610
611			function WriteData: Boolean;
612			begin
613			if Filer.Ancestor <> nil then
614			Result := not FParams.IsEqual(TIBStoredProc(Filer.Ancestor).FParams) else
615			Result := FParams.Count > 0;
616			end;
617
618			begin
619			inherited DefineProperties(Filer);
620			Filer.DefineProperty('ParamData', ReadParamData, WriteParamData, WriteData); {do not localize}
621			end;
622
623			procedure TIBStoredProc.WriteParamData(Writer: TWriter);
624			begin
625			Writer.WriteCollection(Params);
626			end;
627
628	tony	107	procedure TIBStoredProc.UpdateQuery;
629			begin
630			if not (csReading in ComponentState) then
631			begin
632			FreeStatement;
633			FParams.Clear;
634			if (FProcName <> '') and (Database <> nil) then
635			begin
636			GenerateSQL;
637			if csDesigning in ComponentState then
638			begin
639			Prepare; {Fills the Params collection}
640			UnPrepare;
641			end;
642			end;
643			end
644			else
645			begin
646			if (FProcName <> '') and (Database <> nil) then
647			GenerateSQL;
648			end;
649			end;
650
651	tony	33	procedure TIBStoredProc.ReadParamData(Reader: TReader);
652			begin
653			Reader.ReadValue;
654			Reader.ReadCollection(Params);
655			end;
656
657			end.