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;
  protected
    procedure CheckHandle; override;
  public
    constructor Create(DatabaseName: AnsiString; aDPB: IDPB;
      RaiseExceptionOnConnectError: boolean);
    constructor CreateDatabase(DatabaseName: AnsiString; aDPB: IDPB; RaiseExceptionOnError: boolean); overload;
    constructor CreateDatabase(sql: AnsiString; aSQLDialect: integer;
      RaiseExceptionOnError: boolean); overload;
    function GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer): IDBInformation; override;
    property Handle: TISC_DB_HANDLE read FHandle;

  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): IStatement; override;
    function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
                       aSQLDialect: integer; GenerateParamNames: boolean=false): IStatement; override;
    function GetEventHandler(Events: TStrings): IEvents; override;
    function CreateBlob(transaction: ITransaction; RelationName, ColumnName: AnsiString; BPB: IBPB=nil): IBlob; overload;
    function CreateBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BPB: IBPB=nil): IBlob; overload;
    function CreateBlob(transaction: ITransaction; SubType: integer; aCharSetID: cardinal=0; BPB: IBPB=nil): IBlob; overload;
    function OpenBlob(transaction: ITransaction; RelationName, ColumnName: AnsiString; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload;
    function OpenBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload; override;

    function OpenArray(transaction: ITransaction; RelationName, ColumnName: AnsiString;
      ArrayID: TISC_QUAD): IArray;
    function CreateArray(transaction: ITransaction; RelationName, ColumnName: AnsiString
      ): IArray; overload;
    function CreateArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData): IArray; overload;
    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;
    function GetArrayMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IArrayMetaData;
  end;

implementation

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

  { TFB25Attachment }

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

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

constructor TFB25Attachment.CreateDatabase(DatabaseName: AnsiString; aDPB: IDPB;
  RaiseExceptionOnError: boolean);
var sql: AnsiString;
    tr_handle: TISC_TR_HANDLE;
begin
  inherited Create(DatabaseName,aDPB,RaiseExceptionOnError);
  sql := GenerateCreateDatabaseSQL(DatabaseName,aDPB);
  tr_handle := nil;
  with Firebird25ClientAPI 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(sql: AnsiString; aSQLDialect: integer;
    RaiseExceptionOnError: boolean);
var tr_handle: TISC_TR_HANDLE;
begin
  inherited Create('',nil,RaiseExceptionOnError);
  FSQLDialect := aSQLDialect;
  tr_handle := nil;
  with Firebird25ClientAPI 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;
  with Firebird25ClientAPI, 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 Firebird25ClientAPI 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 Firebird25ClientAPI 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 Firebird25ClientAPI 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(self,TPB,DefaultCompletion);
end;

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

function TFB25Attachment.CreateBlob(transaction: ITransaction; RelationName,
  ColumnName: AnsiString; BPB: IBPB): IBlob;
begin
  CheckHandle;
  Result := TFB25Blob.Create(self,transaction as TFB25transaction,
                TFB25BlobMetaData.Create(self,Transaction as TFB25Transaction,RelationName,ColumnName),BPB);
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; RelationName,
  ColumnName: AnsiString; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob;
begin
  CheckHandle;
  Result := TFB25Blob.Create(self,transaction as TFB25transaction,
                TFB25BlobMetaData.Create(self,Transaction as TFB25Transaction,RelationName,ColumnName),
                BlobID,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 Firebird25ClientAPI 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): IStatement;
begin
  CheckHandle;
  Result := TFB25Statement.Create(self,transaction,sql,aSQLDialect);
end;

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

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

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

function TFB25Attachment.CreateArray(transaction: ITransaction; RelationName, ColumnName: AnsiString): IArray;
begin
  CheckHandle;
  Result := TFB25Array.Create(self,transaction as TFB25Transaction,
                    GetArrayMetaData(transaction,RelationName,ColumnName));
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;

end.

Revision:	143
Committed:	Fri Feb 23 12:11:21 2018 UTC (6 years, 2 months ago) by tony
Content type:	text/x-pascal
Original Path:	*ibx/trunk/fbintf/client/2.5/FB25Attachment.pas*
File size:	12321 byte(s)
Log Message:	Fixes Merged
#	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	protected
50	procedure CheckHandle; override;
51	public
52	constructor Create(DatabaseName: AnsiString; aDPB: IDPB;
53	RaiseExceptionOnConnectError: boolean);
54	constructor CreateDatabase(DatabaseName: AnsiString; aDPB: IDPB; RaiseExceptionOnError: boolean); overload;
55	constructor CreateDatabase(sql: AnsiString; aSQLDialect: integer;
56	RaiseExceptionOnError: boolean); overload;
57	function GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer): IDBInformation; override;
58	property Handle: TISC_DB_HANDLE read FHandle;
59
60	public
61	{IAttachment}
62	procedure Connect;
63	procedure Disconnect(Force: boolean=false); override;
64	function IsConnected: boolean; override;
65	procedure DropDatabase;
66	function StartTransaction(TPB: array of byte; DefaultCompletion: TTransactionCompletion): ITransaction; override;
67	function StartTransaction(TPB: ITPB; DefaultCompletion: TTransactionCompletion): ITransaction; override;
68	procedure ExecImmediate(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer); override;
69	function Prepare(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer): IStatement; override;
70	function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
71	aSQLDialect: integer; GenerateParamNames: boolean=false): IStatement; override;
72	function GetEventHandler(Events: TStrings): IEvents; override;
73	function CreateBlob(transaction: ITransaction; RelationName, ColumnName: AnsiString; BPB: IBPB=nil): IBlob; overload;
74	function CreateBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BPB: IBPB=nil): IBlob; overload;
75	function CreateBlob(transaction: ITransaction; SubType: integer; aCharSetID: cardinal=0; BPB: IBPB=nil): IBlob; overload;
76	function OpenBlob(transaction: ITransaction; RelationName, ColumnName: AnsiString; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload;
77	function OpenBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload; override;
78
79	function OpenArray(transaction: ITransaction; RelationName, ColumnName: AnsiString;
80	ArrayID: TISC_QUAD): IArray;
81	function CreateArray(transaction: ITransaction; RelationName, ColumnName: AnsiString
82	): IArray; overload;
83	function CreateArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData): IArray; overload;
84	function CreateArrayMetaData(SQLType: cardinal; tableName: AnsiString; columnName: AnsiString;
85	Scale: integer; size: cardinal;
86	acharSetID: cardinal; dimensions: cardinal; bounds: TArrayBounds
87	): IArrayMetaData;
88
89	{Database Information}
90
91	function GetBlobMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IBlobMetaData;
92	function GetArrayMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IArrayMetaData;
93	end;
94
95	implementation
96
97	uses FB25Events,FB25Transaction, FBMessages, FB25Blob,
98	FB25Statement, FB25Array, IBUtils;
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(DatabaseName: AnsiString; aDPB: IDPB;
109	RaiseExceptionOnConnectError: boolean);
110	begin
111	if aDPB = nil then
112	begin
113	if RaiseExceptionOnConnectError then
114	IBError(ibxeNoDPB,[nil]);
115	Exit;
116	end;
117	inherited Create(DatabaseName,aDPB,RaiseExceptionOnConnectError);
118	Connect;
119	end;
120
121	constructor TFB25Attachment.CreateDatabase(DatabaseName: AnsiString; aDPB: IDPB;
122	RaiseExceptionOnError: boolean);
123	var sql: AnsiString;
124	tr_handle: TISC_TR_HANDLE;
125	begin
126	inherited Create(DatabaseName,aDPB,RaiseExceptionOnError);
127	sql := GenerateCreateDatabaseSQL(DatabaseName,aDPB);
128	tr_handle := nil;
129	with Firebird25ClientAPI do
130	if (isc_dsql_execute_immediate(StatusVector, @FHandle, @tr_handle, 0, PAnsiChar(sql),
131	SQLDialect, nil) > 0) and RaiseExceptionOnError then
132	IBDataBaseError;
133	if DPB <> nil then
134	{Connect using known parameters}
135	begin
136	Disconnect;
137	Connect;
138	end
139	else
140	GetODSAndConnectionInfo;
141	end;
142
143	constructor TFB25Attachment.CreateDatabase(sql: AnsiString; aSQLDialect: integer;
144	RaiseExceptionOnError: boolean);
145	var tr_handle: TISC_TR_HANDLE;
146	begin
147	inherited Create('',nil,RaiseExceptionOnError);
148	FSQLDialect := aSQLDialect;
149	tr_handle := nil;
150	with Firebird25ClientAPI do
151	begin
152	if (isc_dsql_execute_immediate(StatusVector, @FHandle, @tr_handle, 0, PAnsiChar(sql),
153	aSQLDialect, nil) > 0) and RaiseExceptionOnError then
154	IBDataBaseError;
155
156	end;
157	GetODSAndConnectionInfo;
158	ExtractConnectString(sql,FDatabaseName);
159	DPBFromCreateSQL(sql);
160	end;
161
162	function TFB25Attachment.GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer
163	): IDBInformation;
164	begin
165	Result := TDBInformation.Create;
166	with Firebird25ClientAPI, Result as TDBInformation do
167	if isc_database_info(StatusVector, @(FHandle), ReqBufLen, ReqBuffer,
168	getBufSize, Buffer) > 0 then
169	IBDataBaseError;
170	end;
171
172	procedure TFB25Attachment.Connect;
173	begin
174	FSQLDialect := 3;
175
176	with Firebird25ClientAPI do
177	if DPB = nil then
178	begin
179	if (isc_attach_database(StatusVector, Length(FDatabaseName),
180	PAnsiChar(FDatabaseName), @FHandle, 0, nil) > 0) and FRaiseExceptionOnConnectError then
181	IBDatabaseError;
182	end
183	else
184	begin
185	if (isc_attach_database(StatusVector, Length(FDatabaseName),
186	PAnsiChar(FDatabaseName), @FHandle,
187	(DPB as TDPB).getDataLength,
188	(DPB as TDPB).getBuffer) > 0 ) and FRaiseExceptionOnConnectError then
189	IBDatabaseError;
190
191	end;
192	GetODSAndConnectionInfo;
193	end;
194
195	procedure TFB25Attachment.Disconnect(Force: boolean);
196	begin
197	if FHandle = nil then
198	Exit;
199
200	EndAllTransactions;
201	{Disconnect}
202	with Firebird25ClientAPI do
203	if (isc_detach_database(StatusVector, @FHandle) > 0) and not Force then
204	IBDatabaseError;
205	FHandle := nil;
206	FHasDefaultCharSet := false;
207	FCodePage := CP_NONE;
208	FCharSetID := 0;
209	end;
210
211	function TFB25Attachment.IsConnected: boolean;
212	begin
213	Result := FHandle <> nil;
214	end;
215
216	procedure TFB25Attachment.DropDatabase;
217	begin
218	CheckHandle;
219	EndAllTransactions;
220	with Firebird25ClientAPI do
221	if isc_drop_database(StatusVector, @FHandle) > 0 then
222	IBDatabaseError;
223	FHandle := nil;
224	end;
225
226	function TFB25Attachment.StartTransaction(TPB: array of byte;
227	DefaultCompletion: TTransactionCompletion): ITransaction;
228	begin
229	CheckHandle;
230	Result := TFB25Transaction.Create(self,TPB,DefaultCompletion);
231	end;
232
233	function TFB25Attachment.StartTransaction(TPB: ITPB;
234	DefaultCompletion: TTransactionCompletion): ITransaction;
235	begin
236	CheckHandle;
237	Result := TFB25Transaction.Create(self,TPB,DefaultCompletion);
238	end;
239
240	function TFB25Attachment.CreateBlob(transaction: ITransaction; RelationName,
241	ColumnName: AnsiString; BPB: IBPB): IBlob;
242	begin
243	CheckHandle;
244	Result := TFB25Blob.Create(self,transaction as TFB25transaction,
245	TFB25BlobMetaData.Create(self,Transaction as TFB25Transaction,RelationName,ColumnName),BPB);
246	end;
247
248	function TFB25Attachment.CreateBlob(transaction: ITransaction;
249	BlobMetaData: IBlobMetaData; BPB: IBPB): IBlob;
250	begin
251	CheckHandle;
252	Result := TFB25Blob.Create(self,transaction as TFB25transaction,BlobMetaData,BPB);
253	end;
254
255	function TFB25Attachment.CreateBlob(transaction: ITransaction;
256	SubType: integer; aCharSetID: cardinal; BPB: IBPB): IBlob;
257	begin
258	CheckHandle;
259	Result := TFB25Blob.Create(self,transaction as TFB25transaction,SubType,aCharSetID,BPB);
260	end;
261
262	function TFB25Attachment.OpenBlob(transaction: ITransaction; RelationName,
263	ColumnName: AnsiString; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob;
264	begin
265	CheckHandle;
266	Result := TFB25Blob.Create(self,transaction as TFB25transaction,
267	TFB25BlobMetaData.Create(self,Transaction as TFB25Transaction,RelationName,ColumnName),
268	BlobID,BPB);
269	end;
270
271	function TFB25Attachment.OpenBlob(transaction: ITransaction;
272	BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob;
273	begin
274	CheckHandle;
275	Result := TFB25Blob.Create(self,transaction as TFB25transaction,BlobMetaData,BlobID,BPB);
276	end;
277
278	procedure TFB25Attachment.ExecImmediate(transaction: ITransaction; sql: AnsiString;
279	aSQLDialect: integer);
280	var TRHandle: TISC_TR_HANDLE;
281	begin
282	CheckHandle;
283	TRHandle := (Transaction as TFB25Transaction).Handle;
284	with Firebird25ClientAPI do
285	if isc_dsql_execute_immediate(StatusVector, @fHandle, @TRHandle, 0,PAnsiChar(sql), aSQLDialect, nil) > 0 then
286	IBDatabaseError;
287	SignalActivity;
288	end;
289
290	function TFB25Attachment.Prepare(transaction: ITransaction; sql: AnsiString;
291	aSQLDialect: integer): IStatement;
292	begin
293	CheckHandle;
294	Result := TFB25Statement.Create(self,transaction,sql,aSQLDialect);
295	end;
296
297	function TFB25Attachment.PrepareWithNamedParameters(transaction: ITransaction;
298	sql: AnsiString; aSQLDialect: integer; GenerateParamNames: boolean): IStatement;
299	begin
300	CheckHandle;
301	Result := TFB25Statement.CreateWithParameterNames(self,transaction,sql,aSQLDialect,
302	GenerateParamNames);
303	end;
304
305	function TFB25Attachment.GetEventHandler(Events: TStrings): IEvents;
306	begin
307	CheckHandle;
308	Result := TFB25Events.Create(self,Events);
309	end;
310
311	function TFB25Attachment.OpenArray(transaction: ITransaction; RelationName, ColumnName: AnsiString;
312	ArrayID: TISC_QUAD): IArray;
313	begin
314	CheckHandle;
315	Result := TFB25Array.Create(self,transaction as TFB25Transaction,
316	GetArrayMetaData(transaction,RelationName,ColumnName),ArrayID);
317	end;
318
319	function TFB25Attachment.CreateArray(transaction: ITransaction; RelationName, ColumnName: AnsiString): IArray;
320	begin
321	CheckHandle;
322	Result := TFB25Array.Create(self,transaction as TFB25Transaction,
323	GetArrayMetaData(transaction,RelationName,ColumnName));
324	end;
325
326	function TFB25Attachment.CreateArray(transaction: ITransaction;
327	ArrayMetaData: IArrayMetaData): IArray;
328	begin
329	CheckHandle;
330	Result := TFB25Array.Create(self,transaction as TFB25Transaction,ArrayMetaData);
331	end;
332
333	function TFB25Attachment.CreateArrayMetaData(SQLType: cardinal;
334	tableName: AnsiString; columnName: AnsiString; Scale: integer; size: cardinal;
335	acharSetID: cardinal; dimensions: cardinal; bounds: TArrayBounds
336	): IArrayMetaData;
337	begin
338	Result := TFB25ArrayMetaData.Create(self,SQLType,tableName,ColumnName,Scale,size,acharSetID,dimensions,bounds);
339	end;
340
341	function TFB25Attachment.GetBlobMetaData(Transaction: ITransaction; tableName,
342	columnName: AnsiString): IBlobMetaData;
343	begin
344	CheckHandle;
345	Result := TFB25BlobMetaData.Create(self,Transaction as TFB25Transaction,tableName,columnName);
346	end;
347
348	function TFB25Attachment.GetArrayMetaData(Transaction: ITransaction; tableName,
349	columnName: AnsiString): IArrayMetaData;
350	begin
351	CheckHandle;
352	Result := TFB25ArrayMetaData.Create(self,Transaction as TFB25Transaction,tableName,columnName);
353	end;
354
355	end.
356