client/2.5/FB25Attachment.pas

(*
 *  Firebird Interface (fbintf). The fbintf components provide a set of
 *  Pascal language bindings for the Firebird API.
 *
 *  The contents of this file are subject to the Initial Developer's
 *  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 here:
 *
 *    http://www.firebirdsql.org/index.php?op=doc&id=idpl
 *
 *  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 Initial Developer of the Original Code is Tony Whyman.
 *
 *  The Original Code is (C) 2016 Tony Whyman, MWA Software
 *  (http://www.mwasoftware.co.uk).
 *
 *  All Rights Reserved.
 *
 *  Contributor(s): ______________________________________.
 *
*)
unit FB25Attachment;
{$IFDEF MSWINDOWS} 
{$DEFINE WINDOWS} 
{$ENDIF}

{$IFDEF FPC}
{$mode delphi}
{$interfaces COM}
{$ENDIF}

interface

uses
  Classes, SysUtils, IB,  FBAttachment, FB25ClientAPI, IBHeader,
  FBParamBlock, FBOutputBlock, FBActivityMonitor;

type
  { TFB25Attachment }

  TFB25Attachment = class(TFBAttachment, IAttachment, IActivityMonitor)
  private
    FHandle: TISC_DB_HANDLE;
    FFirebird25ClientAPI: TFB25ClientAPI;
  protected
    procedure CheckHandle; override;
  public
    constructor Create(api: TFB25ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
      RaiseExceptionOnConnectError: boolean);
    constructor CreateDatabase(api: TFB25ClientAPI; DatabaseName: AnsiString; aDPB: IDPB; RaiseExceptionOnError: boolean); overload;
    constructor CreateDatabase(api: TFB25ClientAPI; sql: AnsiString; aSQLDialect: integer;
      RaiseExceptionOnError: boolean); overload;
    function GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer): IDBInformation; override;
    property Handle: TISC_DB_HANDLE read FHandle;
    property Firebird25ClientAPI: TFB25ClientAPI read FFirebird25ClientAPI;

  public
    {IAttachment}
    procedure Connect;
    procedure Disconnect(Force: boolean=false); override;
    function IsConnected: boolean; override;
    procedure DropDatabase;
    function StartTransaction(TPB: array of byte; DefaultCompletion: TTransactionCompletion): ITransaction; override;
    function StartTransaction(TPB: ITPB; DefaultCompletion: TTransactionCompletion): ITransaction; override;
    procedure ExecImmediate(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer); override;
    function Prepare(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer; CursorName: AnsiString=''): IStatement; override;
    function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
                       aSQLDialect: integer; GenerateParamNames: boolean=false;
                       CaseSensitiveParams: boolean=false; CursorName: AnsiString=''): IStatement; override;
    function GetEventHandler(Events: TStrings): IEvents; override;
    function CreateBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BPB: IBPB=nil): IBlob; overload; override;
    function CreateBlob(transaction: ITransaction; SubType: integer; aCharSetID: cardinal=0; BPB: IBPB=nil): IBlob; overload;
    function OpenBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload; override;

    function OpenArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData; ArrayID: TISC_QUAD): IArray; overload; override;
    function CreateArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData): IArray; overload; override;
    function CreateArrayMetaData(SQLType: cardinal; tableName: AnsiString; columnName: AnsiString;
      Scale: integer; size: cardinal;
      acharSetID: cardinal; dimensions: cardinal; bounds: TArrayBounds
  ): IArrayMetaData;

    {Database Information}

    function GetBlobMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IBlobMetaData; override;
    function GetArrayMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IArrayMetaData; override;
    procedure getFBVersion(version: TStrings);
    function HasScollableCursors: boolean;
  end;

implementation

uses FB25Events,FB25Transaction, FBMessages, FB25Blob,
  FB25Statement, FB25Array, IBUtils, IBExternals;

  { TFB25Attachment }

procedure TFB25Attachment.CheckHandle;
begin
  if FHandle = nil then
    IBError(ibxeDatabaseClosed,[nil]);
end;

constructor TFB25Attachment.Create(api: TFB25ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
  RaiseExceptionOnConnectError: boolean);
begin
  FFirebird25ClientAPI := api;
  if aDPB = nil then
  begin
    if RaiseExceptionOnConnectError then
       IBError(ibxeNoDPB,[nil]);
    Exit;
  end;
  inherited Create(api,DatabaseName,aDPB,RaiseExceptionOnConnectError);
  Connect;
end;

constructor TFB25Attachment.CreateDatabase(api: TFB25ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
  RaiseExceptionOnError: boolean);
var sql: AnsiString;
    tr_handle: TISC_TR_HANDLE;
begin
  inherited Create(api,DatabaseName,aDPB,RaiseExceptionOnError);
  FFirebird25ClientAPI := api;
  sql := GenerateCreateDatabaseSQL(DatabaseName,aDPB);
  tr_handle := nil;
  with FFirebird25ClientAPI do
  if (isc_dsql_execute_immediate(StatusVector, @FHandle, @tr_handle, 0, PAnsiChar(sql),
                                  SQLDialect, nil) > 0) and RaiseExceptionOnError then
    IBDataBaseError;
  if DPB <> nil then
  {Connect using known parameters}
  begin
    Disconnect;
    Connect;
  end
  else
    GetODSAndConnectionInfo;
end;

constructor TFB25Attachment.CreateDatabase(api: TFB25ClientAPI; sql: AnsiString; aSQLDialect: integer;
    RaiseExceptionOnError: boolean);
var tr_handle: TISC_TR_HANDLE;
begin
  inherited Create(api,'',nil,RaiseExceptionOnError);
  FFirebird25ClientAPI := api;
  FSQLDialect := aSQLDialect;
  tr_handle := nil;
  with FFirebird25ClientAPI do
  begin
    if (isc_dsql_execute_immediate(StatusVector, @FHandle, @tr_handle, 0, PAnsiChar(sql),
                                  aSQLDialect, nil) > 0) and RaiseExceptionOnError then
      IBDataBaseError;

  end;
  GetODSAndConnectionInfo;
  ExtractConnectString(sql,FDatabaseName);
  DPBFromCreateSQL(sql);
end;

function TFB25Attachment.GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer
  ): IDBInformation;
begin
  Result := TDBInformation.Create(FFirebird25ClientAPI);
  with FFirebird25ClientAPI, Result as TDBInformation do
     if isc_database_info(StatusVector, @(FHandle), ReqBufLen, ReqBuffer,
                               getBufSize, Buffer) > 0 then
          IBDataBaseError;
end;

procedure TFB25Attachment.Connect;
begin
  FSQLDialect := 3;

  with FFirebird25ClientAPI do
  if DPB = nil then
  begin
    if (isc_attach_database(StatusVector, Length(FDatabaseName),
                        PAnsiChar(FDatabaseName), @FHandle, 0, nil) > 0) and FRaiseExceptionOnConnectError then
      IBDatabaseError;
  end
  else
  begin
    if (isc_attach_database(StatusVector, Length(FDatabaseName),
                         PAnsiChar(FDatabaseName), @FHandle,
                         (DPB as TDPB).getDataLength,
                         (DPB as TDPB).getBuffer) > 0 ) and FRaiseExceptionOnConnectError then
      IBDatabaseError;

  end;
  GetODSAndConnectionInfo;
end;

procedure TFB25Attachment.Disconnect(Force: boolean);
begin
  if FHandle = nil then
    Exit;

  EndAllTransactions;
  {Disconnect}
  with FFirebird25ClientAPI do
    if (isc_detach_database(StatusVector, @FHandle) > 0) and not Force then
      IBDatabaseError;
  FHandle := nil;
  FHasDefaultCharSet := false;
  FCodePage := CP_NONE;
  FCharSetID := 0;
end;

function TFB25Attachment.IsConnected: boolean;
begin
  Result := FHandle <> nil;
end;

procedure TFB25Attachment.DropDatabase;
begin
  CheckHandle;
  EndAllTransactions;
  with FFirebird25ClientAPI do
    if isc_drop_database(StatusVector, @FHandle) > 0 then
      IBDatabaseError;
  FHandle := nil;
end;

function TFB25Attachment.StartTransaction(TPB: array of byte;
  DefaultCompletion: TTransactionCompletion): ITransaction;
begin
  CheckHandle;
  Result := TFB25Transaction.Create(FFirebird25ClientAPI,self,TPB,DefaultCompletion);
end;

function TFB25Attachment.StartTransaction(TPB: ITPB;
  DefaultCompletion: TTransactionCompletion): ITransaction;
begin
  CheckHandle;
  Result := TFB25Transaction.Create(FFirebird25ClientAPI,self,TPB,DefaultCompletion);
end;

function TFB25Attachment.CreateBlob(transaction: ITransaction;
  BlobMetaData: IBlobMetaData; BPB: IBPB): IBlob;
begin
  CheckHandle;
  Result := TFB25Blob.Create(self,transaction as TFB25transaction,BlobMetaData,BPB);
end;

function TFB25Attachment.CreateBlob(transaction: ITransaction;
  SubType: integer; aCharSetID: cardinal; BPB: IBPB): IBlob;
begin
  CheckHandle;
  Result := TFB25Blob.Create(self,transaction as TFB25transaction,SubType,aCharSetID,BPB);
end;

function TFB25Attachment.OpenBlob(transaction: ITransaction;
  BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob;
begin
  CheckHandle;
  Result :=  TFB25Blob.Create(self,transaction as TFB25transaction,BlobMetaData,BlobID,BPB);
end;

procedure TFB25Attachment.ExecImmediate(transaction: ITransaction; sql: AnsiString;
  aSQLDialect: integer);
var TRHandle: TISC_TR_HANDLE;
begin
  CheckHandle;
  TRHandle := (Transaction as TFB25Transaction).Handle;
  with FFirebird25ClientAPI do
    if isc_dsql_execute_immediate(StatusVector, @fHandle, @TRHandle, 0,PAnsiChar(sql), aSQLDialect, nil) > 0 then
      IBDatabaseError;
  SignalActivity;
end;

function TFB25Attachment.Prepare(transaction: ITransaction; sql: AnsiString;
  aSQLDialect: integer; CursorName: AnsiString): IStatement;
begin
  CheckHandle;
  Result := TFB25Statement.Create(self,transaction,sql,aSQLDialect);
end;

function TFB25Attachment.PrepareWithNamedParameters(transaction: ITransaction;
  sql: AnsiString; aSQLDialect: integer; GenerateParamNames: boolean;
  CaseSensitiveParams: boolean; CursorName: AnsiString): IStatement;
begin
  CheckHandle;
  Result := TFB25Statement.CreateWithParameterNames(self,transaction,sql,aSQLDialect,
         GenerateParamNames,CaseSensitiveParams,CursorName);
end;

function TFB25Attachment.GetEventHandler(Events: TStrings): IEvents;
begin
  CheckHandle;
  Result := TFB25Events.Create(self,Events);
end;

function TFB25Attachment.OpenArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData;
  ArrayID: TISC_QUAD): IArray;
begin
  CheckHandle;
  Result := TFB25Array.Create(self,transaction as TFB25Transaction,
                    ArrayMetaData,ArrayID);
end;

function TFB25Attachment.CreateArray(transaction: ITransaction;
  ArrayMetaData: IArrayMetaData): IArray;
begin
  CheckHandle;
  Result := TFB25Array.Create(self,transaction as TFB25Transaction,ArrayMetaData);
end;

function TFB25Attachment.CreateArrayMetaData(SQLType: cardinal;
  tableName: AnsiString; columnName: AnsiString; Scale: integer; size: cardinal;
  acharSetID: cardinal; dimensions: cardinal; bounds: TArrayBounds
  ): IArrayMetaData;
begin
  Result := TFB25ArrayMetaData.Create(self,SQLType,tableName,ColumnName,Scale,size,acharSetID,dimensions,bounds);
end;

function TFB25Attachment.GetBlobMetaData(Transaction: ITransaction; tableName,
  columnName: AnsiString): IBlobMetaData;
begin
  CheckHandle;
  Result := TFB25BlobMetaData.Create(self,Transaction as TFB25Transaction,tableName,columnName);
end;

function TFB25Attachment.GetArrayMetaData(Transaction: ITransaction; tableName,
  columnName: AnsiString): IArrayMetaData;
begin
  CheckHandle;
  Result := TFB25ArrayMetaData.Create(self,Transaction as TFB25Transaction,tableName,columnName);
end;

procedure ISCVersionCallback(userArg: pointer; text: PAnsiChar); cdecl;
begin
  TStrings(userArg).Add(text);
end;

procedure TFB25Attachment.getFBVersion(version: TStrings);
var callback: pointer;
begin
  callback := @ISCVersionCallback;
  version.Clear;
  with FFirebird25ClientAPI do
    if isc_version(@FHandle,TISC_CALLBACK(callback),PVoid(version)) > 0 then
       IBDataBaseError;
end;

function TFB25Attachment.HasScollableCursors: boolean;
begin
  Result := false;
end;

end.

Revision:	362
Committed:	Tue Dec 7 13:27:39 2021 UTC (2 years, 4 months ago) by tony
Content type:	text/x-pascal
File size:	12193 byte(s)
Log Message:	initiate test release
#	Content
1	(*
2	* Firebird Interface (fbintf). The fbintf components provide a set of
3	* Pascal language bindings for the Firebird API.
4	*
5	* The contents of this file are subject to the Initial Developer's
6	* Public License Version 1.0 (the "License"); you may not use this
7	* file except in compliance with the License. You may obtain a copy
8	* of the License here:
9	*
10	* http://www.firebirdsql.org/index.php?op=doc&id=idpl
11	*
12	* Software distributed under the License is distributed on an "AS
13	* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
14	* implied. See the License for the specific language governing rights
15	* and limitations under the License.
16	*
17	* The Initial Developer of the Original Code is Tony Whyman.
18	*
19	* The Original Code is (C) 2016 Tony Whyman, MWA Software
20	* (http://www.mwasoftware.co.uk).
21	*
22	* All Rights Reserved.
23	*
24	* Contributor(s): ______________________________________.
25	*
26	*)
27	unit FB25Attachment;
28	{$IFDEF MSWINDOWS}
29	{$DEFINE WINDOWS}
30	{$ENDIF}
31
32	{$IFDEF FPC}
33	{$mode delphi}
34	{$interfaces COM}
35	{$ENDIF}
36
37	interface
38
39	uses
40	Classes, SysUtils, IB, FBAttachment, FB25ClientAPI, IBHeader,
41	FBParamBlock, FBOutputBlock, FBActivityMonitor;
42
43	type
44	{ TFB25Attachment }
45
46	TFB25Attachment = class(TFBAttachment, IAttachment, IActivityMonitor)
47	private
48	FHandle: TISC_DB_HANDLE;
49	FFirebird25ClientAPI: TFB25ClientAPI;
50	protected
51	procedure CheckHandle; override;
52	public
53	constructor Create(api: TFB25ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
54	RaiseExceptionOnConnectError: boolean);
55	constructor CreateDatabase(api: TFB25ClientAPI; DatabaseName: AnsiString; aDPB: IDPB; RaiseExceptionOnError: boolean); overload;
56	constructor CreateDatabase(api: TFB25ClientAPI; sql: AnsiString; aSQLDialect: integer;
57	RaiseExceptionOnError: boolean); overload;
58	function GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer): IDBInformation; override;
59	property Handle: TISC_DB_HANDLE read FHandle;
60	property Firebird25ClientAPI: TFB25ClientAPI read FFirebird25ClientAPI;
61
62	public
63	{IAttachment}
64	procedure Connect;
65	procedure Disconnect(Force: boolean=false); override;
66	function IsConnected: boolean; override;
67	procedure DropDatabase;
68	function StartTransaction(TPB: array of byte; DefaultCompletion: TTransactionCompletion): ITransaction; override;
69	function StartTransaction(TPB: ITPB; DefaultCompletion: TTransactionCompletion): ITransaction; override;
70	procedure ExecImmediate(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer); override;
71	function Prepare(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer; CursorName: AnsiString=''): IStatement; override;
72	function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
73	aSQLDialect: integer; GenerateParamNames: boolean=false;
74	CaseSensitiveParams: boolean=false; CursorName: AnsiString=''): IStatement; override;
75	function GetEventHandler(Events: TStrings): IEvents; override;
76	function CreateBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BPB: IBPB=nil): IBlob; overload; override;
77	function CreateBlob(transaction: ITransaction; SubType: integer; aCharSetID: cardinal=0; BPB: IBPB=nil): IBlob; overload;
78	function OpenBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload; override;
79
80	function OpenArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData; ArrayID: TISC_QUAD): IArray; overload; override;
81	function CreateArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData): IArray; overload; override;
82	function CreateArrayMetaData(SQLType: cardinal; tableName: AnsiString; columnName: AnsiString;
83	Scale: integer; size: cardinal;
84	acharSetID: cardinal; dimensions: cardinal; bounds: TArrayBounds
85	): IArrayMetaData;
86
87	{Database Information}
88
89	function GetBlobMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IBlobMetaData; override;
90	function GetArrayMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IArrayMetaData; override;
91	procedure getFBVersion(version: TStrings);
92	function HasScollableCursors: boolean;
93	end;
94
95	implementation
96
97	uses FB25Events,FB25Transaction, FBMessages, FB25Blob,
98	FB25Statement, FB25Array, IBUtils, IBExternals;
99
100	{ TFB25Attachment }
101
102	procedure TFB25Attachment.CheckHandle;
103	begin
104	if FHandle = nil then
105	IBError(ibxeDatabaseClosed,[nil]);
106	end;
107
108	constructor TFB25Attachment.Create(api: TFB25ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
109	RaiseExceptionOnConnectError: boolean);
110	begin
111	FFirebird25ClientAPI := api;
112	if aDPB = nil then
113	begin
114	if RaiseExceptionOnConnectError then
115	IBError(ibxeNoDPB,[nil]);
116	Exit;
117	end;
118	inherited Create(api,DatabaseName,aDPB,RaiseExceptionOnConnectError);
119	Connect;
120	end;
121
122	constructor TFB25Attachment.CreateDatabase(api: TFB25ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
123	RaiseExceptionOnError: boolean);
124	var sql: AnsiString;
125	tr_handle: TISC_TR_HANDLE;
126	begin
127	inherited Create(api,DatabaseName,aDPB,RaiseExceptionOnError);
128	FFirebird25ClientAPI := api;
129	sql := GenerateCreateDatabaseSQL(DatabaseName,aDPB);
130	tr_handle := nil;
131	with FFirebird25ClientAPI do
132	if (isc_dsql_execute_immediate(StatusVector, @FHandle, @tr_handle, 0, PAnsiChar(sql),
133	SQLDialect, nil) > 0) and RaiseExceptionOnError then
134	IBDataBaseError;
135	if DPB <> nil then
136	{Connect using known parameters}
137	begin
138	Disconnect;
139	Connect;
140	end
141	else
142	GetODSAndConnectionInfo;
143	end;
144
145	constructor TFB25Attachment.CreateDatabase(api: TFB25ClientAPI; sql: AnsiString; aSQLDialect: integer;
146	RaiseExceptionOnError: boolean);
147	var tr_handle: TISC_TR_HANDLE;
148	begin
149	inherited Create(api,'',nil,RaiseExceptionOnError);
150	FFirebird25ClientAPI := api;
151	FSQLDialect := aSQLDialect;
152	tr_handle := nil;
153	with FFirebird25ClientAPI do
154	begin
155	if (isc_dsql_execute_immediate(StatusVector, @FHandle, @tr_handle, 0, PAnsiChar(sql),
156	aSQLDialect, nil) > 0) and RaiseExceptionOnError then
157	IBDataBaseError;
158
159	end;
160	GetODSAndConnectionInfo;
161	ExtractConnectString(sql,FDatabaseName);
162	DPBFromCreateSQL(sql);
163	end;
164
165	function TFB25Attachment.GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer
166	): IDBInformation;
167	begin
168	Result := TDBInformation.Create(FFirebird25ClientAPI);
169	with FFirebird25ClientAPI, Result as TDBInformation do
170	if isc_database_info(StatusVector, @(FHandle), ReqBufLen, ReqBuffer,
171	getBufSize, Buffer) > 0 then
172	IBDataBaseError;
173	end;
174
175	procedure TFB25Attachment.Connect;
176	begin
177	FSQLDialect := 3;
178
179	with FFirebird25ClientAPI do
180	if DPB = nil then
181	begin
182	if (isc_attach_database(StatusVector, Length(FDatabaseName),
183	PAnsiChar(FDatabaseName), @FHandle, 0, nil) > 0) and FRaiseExceptionOnConnectError then
184	IBDatabaseError;
185	end
186	else
187	begin
188	if (isc_attach_database(StatusVector, Length(FDatabaseName),
189	PAnsiChar(FDatabaseName), @FHandle,
190	(DPB as TDPB).getDataLength,
191	(DPB as TDPB).getBuffer) > 0 ) and FRaiseExceptionOnConnectError then
192	IBDatabaseError;
193
194	end;
195	GetODSAndConnectionInfo;
196	end;
197
198	procedure TFB25Attachment.Disconnect(Force: boolean);
199	begin
200	if FHandle = nil then
201	Exit;
202
203	EndAllTransactions;
204	{Disconnect}
205	with FFirebird25ClientAPI do
206	if (isc_detach_database(StatusVector, @FHandle) > 0) and not Force then
207	IBDatabaseError;
208	FHandle := nil;
209	FHasDefaultCharSet := false;
210	FCodePage := CP_NONE;
211	FCharSetID := 0;
212	end;
213
214	function TFB25Attachment.IsConnected: boolean;
215	begin
216	Result := FHandle <> nil;
217	end;
218
219	procedure TFB25Attachment.DropDatabase;
220	begin
221	CheckHandle;
222	EndAllTransactions;
223	with FFirebird25ClientAPI do
224	if isc_drop_database(StatusVector, @FHandle) > 0 then
225	IBDatabaseError;
226	FHandle := nil;
227	end;
228
229	function TFB25Attachment.StartTransaction(TPB: array of byte;
230	DefaultCompletion: TTransactionCompletion): ITransaction;
231	begin
232	CheckHandle;
233	Result := TFB25Transaction.Create(FFirebird25ClientAPI,self,TPB,DefaultCompletion);
234	end;
235
236	function TFB25Attachment.StartTransaction(TPB: ITPB;
237	DefaultCompletion: TTransactionCompletion): ITransaction;
238	begin
239	CheckHandle;
240	Result := TFB25Transaction.Create(FFirebird25ClientAPI,self,TPB,DefaultCompletion);
241	end;
242
243	function TFB25Attachment.CreateBlob(transaction: ITransaction;
244	BlobMetaData: IBlobMetaData; BPB: IBPB): IBlob;
245	begin
246	CheckHandle;
247	Result := TFB25Blob.Create(self,transaction as TFB25transaction,BlobMetaData,BPB);
248	end;
249
250	function TFB25Attachment.CreateBlob(transaction: ITransaction;
251	SubType: integer; aCharSetID: cardinal; BPB: IBPB): IBlob;
252	begin
253	CheckHandle;
254	Result := TFB25Blob.Create(self,transaction as TFB25transaction,SubType,aCharSetID,BPB);
255	end;
256
257	function TFB25Attachment.OpenBlob(transaction: ITransaction;
258	BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob;
259	begin
260	CheckHandle;
261	Result := TFB25Blob.Create(self,transaction as TFB25transaction,BlobMetaData,BlobID,BPB);
262	end;
263
264	procedure TFB25Attachment.ExecImmediate(transaction: ITransaction; sql: AnsiString;
265	aSQLDialect: integer);
266	var TRHandle: TISC_TR_HANDLE;
267	begin
268	CheckHandle;
269	TRHandle := (Transaction as TFB25Transaction).Handle;
270	with FFirebird25ClientAPI do
271	if isc_dsql_execute_immediate(StatusVector, @fHandle, @TRHandle, 0,PAnsiChar(sql), aSQLDialect, nil) > 0 then
272	IBDatabaseError;
273	SignalActivity;
274	end;
275
276	function TFB25Attachment.Prepare(transaction: ITransaction; sql: AnsiString;
277	aSQLDialect: integer; CursorName: AnsiString): IStatement;
278	begin
279	CheckHandle;
280	Result := TFB25Statement.Create(self,transaction,sql,aSQLDialect);
281	end;
282
283	function TFB25Attachment.PrepareWithNamedParameters(transaction: ITransaction;
284	sql: AnsiString; aSQLDialect: integer; GenerateParamNames: boolean;
285	CaseSensitiveParams: boolean; CursorName: AnsiString): IStatement;
286	begin
287	CheckHandle;
288	Result := TFB25Statement.CreateWithParameterNames(self,transaction,sql,aSQLDialect,
289	GenerateParamNames,CaseSensitiveParams,CursorName);
290	end;
291
292	function TFB25Attachment.GetEventHandler(Events: TStrings): IEvents;
293	begin
294	CheckHandle;
295	Result := TFB25Events.Create(self,Events);
296	end;
297
298	function TFB25Attachment.OpenArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData;
299	ArrayID: TISC_QUAD): IArray;
300	begin
301	CheckHandle;
302	Result := TFB25Array.Create(self,transaction as TFB25Transaction,
303	ArrayMetaData,ArrayID);
304	end;
305
306	function TFB25Attachment.CreateArray(transaction: ITransaction;
307	ArrayMetaData: IArrayMetaData): IArray;
308	begin
309	CheckHandle;
310	Result := TFB25Array.Create(self,transaction as TFB25Transaction,ArrayMetaData);
311	end;
312
313	function TFB25Attachment.CreateArrayMetaData(SQLType: cardinal;
314	tableName: AnsiString; columnName: AnsiString; Scale: integer; size: cardinal;
315	acharSetID: cardinal; dimensions: cardinal; bounds: TArrayBounds
316	): IArrayMetaData;
317	begin
318	Result := TFB25ArrayMetaData.Create(self,SQLType,tableName,ColumnName,Scale,size,acharSetID,dimensions,bounds);
319	end;
320
321	function TFB25Attachment.GetBlobMetaData(Transaction: ITransaction; tableName,
322	columnName: AnsiString): IBlobMetaData;
323	begin
324	CheckHandle;
325	Result := TFB25BlobMetaData.Create(self,Transaction as TFB25Transaction,tableName,columnName);
326	end;
327
328	function TFB25Attachment.GetArrayMetaData(Transaction: ITransaction; tableName,
329	columnName: AnsiString): IArrayMetaData;
330	begin
331	CheckHandle;
332	Result := TFB25ArrayMetaData.Create(self,Transaction as TFB25Transaction,tableName,columnName);
333	end;
334
335	procedure ISCVersionCallback(userArg: pointer; text: PAnsiChar); cdecl;
336	begin
337	TStrings(userArg).Add(text);
338	end;
339
340	procedure TFB25Attachment.getFBVersion(version: TStrings);
341	var callback: pointer;
342	begin
343	callback := @ISCVersionCallback;
344	version.Clear;
345	with FFirebird25ClientAPI do
346	if isc_version(@FHandle,TISC_CALLBACK(callback),PVoid(version)) > 0 then
347	IBDataBaseError;
348	end;
349
350	function TFB25Attachment.HasScollableCursors: boolean;
351	begin
352	Result := false;
353	end;
354
355	end.
356