client/3.0/FB30Attachment.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 FB30Attachment;
{$IFDEF MSWINDOWS} 
{$DEFINE WINDOWS} 
{$ENDIF}

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

interface

uses
  Classes, SysUtils, FBAttachment, FB30ClientAPI, Firebird, IB, FBActivityMonitor, FBParamBlock;

type

  { TFB30Attachment }

  TFB30Attachment = class(TFBAttachment,IAttachment, IActivityMonitor)
  private
    FAttachmentIntf: Firebird.IAttachment;
    FFirebird30ClientAPI: TFB30ClientAPI;
  protected
    procedure CheckHandle; override;
  public
    constructor Create(api: TFB30ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
          RaiseExceptionOnConnectError: boolean);
    constructor CreateDatabase(api: TFB30ClientAPI; DatabaseName: AnsiString; aDPB: IDPB; RaiseExceptionOnError: boolean);  overload;
    constructor CreateDatabase(api: TFB30ClientAPI; sql: AnsiString; aSQLDialect: integer;
      RaiseExceptionOnError: boolean); overload;
    destructor Destroy; override;
    function GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer): IDBInformation;
      override;
    property AttachmentIntf: Firebird.IAttachment read FAttachmentIntf;
    property Firebird30ClientAPI: TFB30ClientAPI read FFirebird30ClientAPI;

  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;
                       CaseSensitiveParams: boolean=false): IStatement; override;

    {Events}
    function GetEventHandler(Events: TStrings): IEvents; override;

    {Blob - may use to open existing Blobs. However, ISQLData.AsBlob is preferred}

    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;

    {Array}
    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);
  end;

implementation

uses FB30Transaction, FB30Statement, FB30Array, FB30Blob, FBMessages,
  FBOutputBlock, FB30Events, IBUtils;

type
  { TVersionCallback }

  TVersionCallback = class(Firebird.IVersionCallbackImpl)
  private
    FOutput: TStrings;
  public
    constructor Create(output: TStrings);
    procedure callback(status: Firebird.IStatus; text: PAnsiChar); override;
  end;

{ TVersionCallback }

constructor TVersionCallback.Create(output: TStrings);
begin
  inherited Create;
  FOutput := output;
end;

procedure TVersionCallback.callback(status: Firebird.IStatus; text: PAnsiChar);
begin
  FOutput.Add(text);
end;


{ TFB30Attachment }

procedure TFB30Attachment.CheckHandle;
begin
  if FAttachmentIntf = nil then
    IBError(ibxeDatabaseClosed,[nil]);
end;

constructor TFB30Attachment.Create(api: TFB30ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
  RaiseExceptionOnConnectError: boolean);
begin
  FFirebird30ClientAPI := api;
  if aDPB = nil then
  begin
    if RaiseExceptionOnConnectError then
       IBError(ibxeNoDPB,[nil]);
    Exit;
  end;
  inherited Create(api,DatabaseName,aDPB,RaiseExceptionOnConnectError);
  Connect;
end;

constructor TFB30Attachment.CreateDatabase(api: TFB30ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
  RaiseExceptionOnError: boolean);
var Param: IDPBItem;
    sql: AnsiString;
    IsCreateDB: boolean;
begin
  inherited Create(api,DatabaseName,aDPB,RaiseExceptionOnError);
  FFirebird30ClientAPI := api;
  IsCreateDB := true;
  if aDPB <> nil then
  begin
    Param := aDPB.Find(isc_dpb_set_db_SQL_dialect);
    if Param <> nil then
      FSQLDialect := Param.AsByte;
  end;
  sql := GenerateCreateDatabaseSQL(DatabaseName,aDPB);
  with FFirebird30ClientAPI do
  begin
    FAttachmentIntf := UtilIntf.executeCreateDatabase(StatusIntf,Length(sql),
                                       PAnsiChar(sql),FSQLDialect,@IsCreateDB);
    if FRaiseExceptionOnConnectError then Check4DataBaseError;
    if InErrorState then
      FAttachmentIntf := nil
    else
    if aDPB <> nil then
    {Connect using known parameters}
    begin
      Disconnect;
      Connect;
    end
    else
      GetODSAndConnectionInfo;
  end;
end;

constructor TFB30Attachment.CreateDatabase(api: TFB30ClientAPI; sql: AnsiString; aSQLDialect: integer;
  RaiseExceptionOnError: boolean);
var IsCreateDB: boolean;
begin
  inherited Create(api,'',nil,RaiseExceptionOnError);
  FFirebird30ClientAPI := api;
  FSQLDialect := aSQLDialect;
  with FFirebird30ClientAPI do
  begin
    FAttachmentIntf := UtilIntf.executeCreateDatabase(StatusIntf,Length(sql),
                                       PAnsiChar(sql),aSQLDialect,@IsCreateDB);
    if FRaiseExceptionOnConnectError then Check4DataBaseError;
    if InErrorState then
      FAttachmentIntf := nil;
  end;
  GetODSAndConnectionInfo;
  ExtractConnectString(sql,FDatabaseName);
  DPBFromCreateSQL(sql);
end;

destructor TFB30Attachment.Destroy;
begin
  inherited Destroy;
  if assigned(FAttachmentIntf) then
    FAttachmentIntf.release;
end;

function TFB30Attachment.GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer): IDBInformation;
begin
  Result := TDBInformation.Create(Firebird30ClientAPI);
  with FFirebird30ClientAPI, Result as TDBInformation do
  begin
    FAttachmentIntf.getInfo(StatusIntf, ReqBufLen, BytePtr(ReqBuffer),
                               getBufSize, BytePtr(Buffer));
      Check4DataBaseError;
  end
end;

procedure TFB30Attachment.Connect;
begin
  with FFirebird30ClientAPI do
  begin
    FAttachmentIntf := ProviderIntf.attachDatabase(StatusIntf,PAnsiChar(FDatabaseName),
                         (DPB as TDPB).getDataLength,
                         BytePtr((DPB as TDPB).getBuffer));
    if FRaiseExceptionOnConnectError then Check4DataBaseError;
    if InErrorState then
      FAttachmentIntf := nil
    else
      GetODSAndConnectionInfo;
  end;
end;

procedure TFB30Attachment.Disconnect(Force: boolean);
begin
  if IsConnected then
    with FFirebird30ClientAPI do
    begin
      EndAllTransactions;
      FAttachmentIntf.Detach(StatusIntf);
      if not Force and InErrorState then
        IBDataBaseError;
      FAttachmentIntf := nil;
      FHasDefaultCharSet := false;
      FCodePage := CP_NONE;
      FCharSetID := 0;
    end;
end;

function TFB30Attachment.IsConnected: boolean;
begin
  Result := FAttachmentIntf <> nil;
end;

procedure TFB30Attachment.DropDatabase;
begin
  if IsConnected then
    with FFirebird30ClientAPI do
    begin
      EndAllTransactions;
      FAttachmentIntf.dropDatabase(StatusIntf);
      Check4DataBaseError;
      FAttachmentIntf := nil;
    end;
end;

function TFB30Attachment.StartTransaction(TPB: array of byte;
  DefaultCompletion: TTransactionCompletion): ITransaction;
begin
  CheckHandle;
  Result := TFB30Transaction.Create(FFirebird30ClientAPI,self,TPB,DefaultCompletion);
end;

function TFB30Attachment.StartTransaction(TPB: ITPB;
  DefaultCompletion: TTransactionCompletion): ITransaction;
begin
  CheckHandle;
  Result := TFB30Transaction.Create(FFirebird30ClientAPI,self,TPB,DefaultCompletion);
end;

procedure TFB30Attachment.ExecImmediate(transaction: ITransaction; sql: AnsiString;
  aSQLDialect: integer);
begin
  CheckHandle;
  with FFirebird30ClientAPI do
  begin
    FAttachmentIntf.execute(StatusIntf,(transaction as TFB30Transaction).TransactionIntf,
                    Length(sql),PAnsiChar(sql),aSQLDialect,nil,nil,nil,nil);
    Check4DataBaseError;
  end;
end;

function TFB30Attachment.Prepare(transaction: ITransaction; sql: AnsiString;
  aSQLDialect: integer): IStatement;
begin
  CheckHandle;
  Result := TFB30Statement.Create(self,transaction,sql,aSQLDialect);
end;

function TFB30Attachment.PrepareWithNamedParameters(transaction: ITransaction;
  sql: AnsiString; aSQLDialect: integer; GenerateParamNames: boolean;
  CaseSensitiveParams: boolean): IStatement;
begin
  CheckHandle;
  Result := TFB30Statement.CreateWithParameterNames(self,transaction,sql,aSQLDialect,
         GenerateParamNames,CaseSensitiveParams);
end;

function TFB30Attachment.GetEventHandler(Events: TStrings): IEvents;
begin
  CheckHandle;
  Result := TFB30Events.Create(self,Events);
end;

function TFB30Attachment.CreateBlob(transaction: ITransaction;
  BlobMetaData: IBlobMetaData; BPB: IBPB): IBlob;
begin
  CheckHandle;
  Result := TFB30Blob.Create(self,transaction as TFB30Transaction, BlobMetaData,BPB);
end;

function TFB30Attachment.CreateBlob(transaction: ITransaction;
  SubType: integer; aCharSetID: cardinal; BPB: IBPB): IBlob;
begin
  CheckHandle;
  Result := TFB30Blob.Create(self,transaction as TFB30Transaction, SubType,aCharSetID,BPB);
end;

function TFB30Attachment.OpenBlob(transaction: ITransaction;
  BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB): IBlob;
begin
  CheckHandle;
  Result :=  TFB30Blob.Create(self,transaction as TFB30transaction,BlobMetaData,BlobID,BPB);
end;

function TFB30Attachment.OpenArray(transaction: ITransaction;
  ArrayMetaData: IArrayMetaData; ArrayID: TISC_QUAD): IArray;
begin
  CheckHandle;
  Result := TFB30Array.Create(self,transaction as TFB30Transaction,
                    ArrayMetaData,ArrayID);
end;

function TFB30Attachment.CreateArray(transaction: ITransaction;
  ArrayMetaData: IArrayMetaData): IArray;
begin
  CheckHandle;
  Result := TFB30Array.Create(self,transaction as TFB30Transaction,ArrayMetaData);
end;

function TFB30Attachment.CreateArrayMetaData(SQLType: cardinal; tableName: AnsiString; columnName: AnsiString;
  Scale: integer; size: cardinal; aCharSetID: cardinal; dimensions: cardinal;
  bounds: TArrayBounds): IArrayMetaData;
begin
  Result := TFB30ArrayMetaData.Create(self,SQLType,tableName,ColumnName,Scale,size,aCharSetID, dimensions,bounds);
end;

function TFB30Attachment.GetBlobMetaData(Transaction: ITransaction; tableName,
  columnName: AnsiString): IBlobMetaData;
begin
  CheckHandle;
  Result := TFB30BlobMetaData.Create(self,Transaction as TFB30Transaction,tableName,columnName);
end;

function TFB30Attachment.GetArrayMetaData(Transaction: ITransaction; tableName,
  columnName: AnsiString): IArrayMetaData;
begin
  CheckHandle;
  Result := TFB30ArrayMetaData.Create(self,Transaction as TFB30Transaction,tableName,columnName);
end;

procedure TFB30Attachment.getFBVersion(version: TStrings);
var bufferObj: TVersionCallback;
begin
  version.Clear;
  bufferObj := TVersionCallback.Create(version);
  try
    with FFirebird30ClientAPI do
    begin
       UtilIntf.getFbVersion(StatusIntf,FAttachmentIntf,bufferObj);
       Check4DataBaseError;
    end;
  finally
    bufferObj.Free;
  end;
end;

end.

Revision:	291
Committed:	Fri Apr 17 10:26:08 2020 UTC (4 years ago) by tony
Content type:	text/x-pascal
Original Path:	*ibx/trunk/fbintf/client/3.0/FB30Attachment.pas*
File size:	12883 byte(s)
Log Message:	Changed for 2.3.4 merged into public 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 FB30Attachment;
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, FBAttachment, FB30ClientAPI, Firebird, IB, FBActivityMonitor, FBParamBlock;
41
42	type
43
44	{ TFB30Attachment }
45
46	TFB30Attachment = class(TFBAttachment,IAttachment, IActivityMonitor)
47	private
48	FAttachmentIntf: Firebird.IAttachment;
49	FFirebird30ClientAPI: TFB30ClientAPI;
50	protected
51	procedure CheckHandle; override;
52	public
53	constructor Create(api: TFB30ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
54	RaiseExceptionOnConnectError: boolean);
55	constructor CreateDatabase(api: TFB30ClientAPI; DatabaseName: AnsiString; aDPB: IDPB; RaiseExceptionOnError: boolean); overload;
56	constructor CreateDatabase(api: TFB30ClientAPI; sql: AnsiString; aSQLDialect: integer;
57	RaiseExceptionOnError: boolean); overload;
58	destructor Destroy; override;
59	function GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer): IDBInformation;
60	override;
61	property AttachmentIntf: Firebird.IAttachment read FAttachmentIntf;
62	property Firebird30ClientAPI: TFB30ClientAPI read FFirebird30ClientAPI;
63
64	public
65	{IAttachment}
66	procedure Connect;
67	procedure Disconnect(Force: boolean=false); override;
68	function IsConnected: boolean; override;
69	procedure DropDatabase;
70	function StartTransaction(TPB: array of byte; DefaultCompletion: TTransactionCompletion): ITransaction; override;
71	function StartTransaction(TPB: ITPB; DefaultCompletion: TTransactionCompletion): ITransaction; override;
72	procedure ExecImmediate(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer); override;
73	function Prepare(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer): IStatement; override;
74	function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
75	aSQLDialect: integer; GenerateParamNames: boolean=false;
76	CaseSensitiveParams: boolean=false): IStatement; override;
77
78	{Events}
79	function GetEventHandler(Events: TStrings): IEvents; override;
80
81	{Blob - may use to open existing Blobs. However, ISQLData.AsBlob is preferred}
82
83	function CreateBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BPB: IBPB=nil): IBlob; overload; override;
84	function CreateBlob(transaction: ITransaction; SubType: integer; aCharSetID: cardinal=0; BPB: IBPB=nil): IBlob; overload;
85	function OpenBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload; override;
86
87	{Array}
88	function OpenArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData; ArrayID: TISC_QUAD): IArray; overload; override;
89	function CreateArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData): IArray; overload; override;
90	function CreateArrayMetaData(SQLType: cardinal; tableName: AnsiString;
91	columnName: AnsiString; Scale: integer; size: cardinal; aCharSetID: cardinal;
92	dimensions: cardinal; bounds: TArrayBounds): IArrayMetaData;
93
94
95	{Database Information}
96	function GetBlobMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IBlobMetaData; override;
97	function GetArrayMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IArrayMetaData; override;
98	procedure getFBVersion(version: TStrings);
99	end;
100
101	implementation
102
103	uses FB30Transaction, FB30Statement, FB30Array, FB30Blob, FBMessages,
104	FBOutputBlock, FB30Events, IBUtils;
105
106	type
107	{ TVersionCallback }
108
109	TVersionCallback = class(Firebird.IVersionCallbackImpl)
110	private
111	FOutput: TStrings;
112	public
113	constructor Create(output: TStrings);
114	procedure callback(status: Firebird.IStatus; text: PAnsiChar); override;
115	end;
116
117	{ TVersionCallback }
118
119	constructor TVersionCallback.Create(output: TStrings);
120	begin
121	inherited Create;
122	FOutput := output;
123	end;
124
125	procedure TVersionCallback.callback(status: Firebird.IStatus; text: PAnsiChar);
126	begin
127	FOutput.Add(text);
128	end;
129
130
131	{ TFB30Attachment }
132
133	procedure TFB30Attachment.CheckHandle;
134	begin
135	if FAttachmentIntf = nil then
136	IBError(ibxeDatabaseClosed,[nil]);
137	end;
138
139	constructor TFB30Attachment.Create(api: TFB30ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
140	RaiseExceptionOnConnectError: boolean);
141	begin
142	FFirebird30ClientAPI := api;
143	if aDPB = nil then
144	begin
145	if RaiseExceptionOnConnectError then
146	IBError(ibxeNoDPB,[nil]);
147	Exit;
148	end;
149	inherited Create(api,DatabaseName,aDPB,RaiseExceptionOnConnectError);
150	Connect;
151	end;
152
153	constructor TFB30Attachment.CreateDatabase(api: TFB30ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
154	RaiseExceptionOnError: boolean);
155	var Param: IDPBItem;
156	sql: AnsiString;
157	IsCreateDB: boolean;
158	begin
159	inherited Create(api,DatabaseName,aDPB,RaiseExceptionOnError);
160	FFirebird30ClientAPI := api;
161	IsCreateDB := true;
162	if aDPB <> nil then
163	begin
164	Param := aDPB.Find(isc_dpb_set_db_SQL_dialect);
165	if Param <> nil then
166	FSQLDialect := Param.AsByte;
167	end;
168	sql := GenerateCreateDatabaseSQL(DatabaseName,aDPB);
169	with FFirebird30ClientAPI do
170	begin
171	FAttachmentIntf := UtilIntf.executeCreateDatabase(StatusIntf,Length(sql),
172	PAnsiChar(sql),FSQLDialect,@IsCreateDB);
173	if FRaiseExceptionOnConnectError then Check4DataBaseError;
174	if InErrorState then
175	FAttachmentIntf := nil
176	else
177	if aDPB <> nil then
178	{Connect using known parameters}
179	begin
180	Disconnect;
181	Connect;
182	end
183	else
184	GetODSAndConnectionInfo;
185	end;
186	end;
187
188	constructor TFB30Attachment.CreateDatabase(api: TFB30ClientAPI; sql: AnsiString; aSQLDialect: integer;
189	RaiseExceptionOnError: boolean);
190	var IsCreateDB: boolean;
191	begin
192	inherited Create(api,'',nil,RaiseExceptionOnError);
193	FFirebird30ClientAPI := api;
194	FSQLDialect := aSQLDialect;
195	with FFirebird30ClientAPI do
196	begin
197	FAttachmentIntf := UtilIntf.executeCreateDatabase(StatusIntf,Length(sql),
198	PAnsiChar(sql),aSQLDialect,@IsCreateDB);
199	if FRaiseExceptionOnConnectError then Check4DataBaseError;
200	if InErrorState then
201	FAttachmentIntf := nil;
202	end;
203	GetODSAndConnectionInfo;
204	ExtractConnectString(sql,FDatabaseName);
205	DPBFromCreateSQL(sql);
206	end;
207
208	destructor TFB30Attachment.Destroy;
209	begin
210	inherited Destroy;
211	if assigned(FAttachmentIntf) then
212	FAttachmentIntf.release;
213	end;
214
215	function TFB30Attachment.GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer): IDBInformation;
216	begin
217	Result := TDBInformation.Create(Firebird30ClientAPI);
218	with FFirebird30ClientAPI, Result as TDBInformation do
219	begin
220	FAttachmentIntf.getInfo(StatusIntf, ReqBufLen, BytePtr(ReqBuffer),
221	getBufSize, BytePtr(Buffer));
222	Check4DataBaseError;
223	end
224	end;
225
226	procedure TFB30Attachment.Connect;
227	begin
228	with FFirebird30ClientAPI do
229	begin
230	FAttachmentIntf := ProviderIntf.attachDatabase(StatusIntf,PAnsiChar(FDatabaseName),
231	(DPB as TDPB).getDataLength,
232	BytePtr((DPB as TDPB).getBuffer));
233	if FRaiseExceptionOnConnectError then Check4DataBaseError;
234	if InErrorState then
235	FAttachmentIntf := nil
236	else
237	GetODSAndConnectionInfo;
238	end;
239	end;
240
241	procedure TFB30Attachment.Disconnect(Force: boolean);
242	begin
243	if IsConnected then
244	with FFirebird30ClientAPI do
245	begin
246	EndAllTransactions;
247	FAttachmentIntf.Detach(StatusIntf);
248	if not Force and InErrorState then
249	IBDataBaseError;
250	FAttachmentIntf := nil;
251	FHasDefaultCharSet := false;
252	FCodePage := CP_NONE;
253	FCharSetID := 0;
254	end;
255	end;
256
257	function TFB30Attachment.IsConnected: boolean;
258	begin
259	Result := FAttachmentIntf <> nil;
260	end;
261
262	procedure TFB30Attachment.DropDatabase;
263	begin
264	if IsConnected then
265	with FFirebird30ClientAPI do
266	begin
267	EndAllTransactions;
268	FAttachmentIntf.dropDatabase(StatusIntf);
269	Check4DataBaseError;
270	FAttachmentIntf := nil;
271	end;
272	end;
273
274	function TFB30Attachment.StartTransaction(TPB: array of byte;
275	DefaultCompletion: TTransactionCompletion): ITransaction;
276	begin
277	CheckHandle;
278	Result := TFB30Transaction.Create(FFirebird30ClientAPI,self,TPB,DefaultCompletion);
279	end;
280
281	function TFB30Attachment.StartTransaction(TPB: ITPB;
282	DefaultCompletion: TTransactionCompletion): ITransaction;
283	begin
284	CheckHandle;
285	Result := TFB30Transaction.Create(FFirebird30ClientAPI,self,TPB,DefaultCompletion);
286	end;
287
288	procedure TFB30Attachment.ExecImmediate(transaction: ITransaction; sql: AnsiString;
289	aSQLDialect: integer);
290	begin
291	CheckHandle;
292	with FFirebird30ClientAPI do
293	begin
294	FAttachmentIntf.execute(StatusIntf,(transaction as TFB30Transaction).TransactionIntf,
295	Length(sql),PAnsiChar(sql),aSQLDialect,nil,nil,nil,nil);
296	Check4DataBaseError;
297	end;
298	end;
299
300	function TFB30Attachment.Prepare(transaction: ITransaction; sql: AnsiString;
301	aSQLDialect: integer): IStatement;
302	begin
303	CheckHandle;
304	Result := TFB30Statement.Create(self,transaction,sql,aSQLDialect);
305	end;
306
307	function TFB30Attachment.PrepareWithNamedParameters(transaction: ITransaction;
308	sql: AnsiString; aSQLDialect: integer; GenerateParamNames: boolean;
309	CaseSensitiveParams: boolean): IStatement;
310	begin
311	CheckHandle;
312	Result := TFB30Statement.CreateWithParameterNames(self,transaction,sql,aSQLDialect,
313	GenerateParamNames,CaseSensitiveParams);
314	end;
315
316	function TFB30Attachment.GetEventHandler(Events: TStrings): IEvents;
317	begin
318	CheckHandle;
319	Result := TFB30Events.Create(self,Events);
320	end;
321
322	function TFB30Attachment.CreateBlob(transaction: ITransaction;
323	BlobMetaData: IBlobMetaData; BPB: IBPB): IBlob;
324	begin
325	CheckHandle;
326	Result := TFB30Blob.Create(self,transaction as TFB30Transaction, BlobMetaData,BPB);
327	end;
328
329	function TFB30Attachment.CreateBlob(transaction: ITransaction;
330	SubType: integer; aCharSetID: cardinal; BPB: IBPB): IBlob;
331	begin
332	CheckHandle;
333	Result := TFB30Blob.Create(self,transaction as TFB30Transaction, SubType,aCharSetID,BPB);
334	end;
335
336	function TFB30Attachment.OpenBlob(transaction: ITransaction;
337	BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB): IBlob;
338	begin
339	CheckHandle;
340	Result := TFB30Blob.Create(self,transaction as TFB30transaction,BlobMetaData,BlobID,BPB);
341	end;
342
343	function TFB30Attachment.OpenArray(transaction: ITransaction;
344	ArrayMetaData: IArrayMetaData; ArrayID: TISC_QUAD): IArray;
345	begin
346	CheckHandle;
347	Result := TFB30Array.Create(self,transaction as TFB30Transaction,
348	ArrayMetaData,ArrayID);
349	end;
350
351	function TFB30Attachment.CreateArray(transaction: ITransaction;
352	ArrayMetaData: IArrayMetaData): IArray;
353	begin
354	CheckHandle;
355	Result := TFB30Array.Create(self,transaction as TFB30Transaction,ArrayMetaData);
356	end;
357
358	function TFB30Attachment.CreateArrayMetaData(SQLType: cardinal; tableName: AnsiString; columnName: AnsiString;
359	Scale: integer; size: cardinal; aCharSetID: cardinal; dimensions: cardinal;
360	bounds: TArrayBounds): IArrayMetaData;
361	begin
362	Result := TFB30ArrayMetaData.Create(self,SQLType,tableName,ColumnName,Scale,size,aCharSetID, dimensions,bounds);
363	end;
364
365	function TFB30Attachment.GetBlobMetaData(Transaction: ITransaction; tableName,
366	columnName: AnsiString): IBlobMetaData;
367	begin
368	CheckHandle;
369	Result := TFB30BlobMetaData.Create(self,Transaction as TFB30Transaction,tableName,columnName);
370	end;
371
372	function TFB30Attachment.GetArrayMetaData(Transaction: ITransaction; tableName,
373	columnName: AnsiString): IArrayMetaData;
374	begin
375	CheckHandle;
376	Result := TFB30ArrayMetaData.Create(self,Transaction as TFB30Transaction,tableName,columnName);
377	end;
378
379	procedure TFB30Attachment.getFBVersion(version: TStrings);
380	var bufferObj: TVersionCallback;
381	begin
382	version.Clear;
383	bufferObj := TVersionCallback.Create(version);
384	try
385	with FFirebird30ClientAPI do
386	begin
387	UtilIntf.getFbVersion(StatusIntf,FAttachmentIntf,bufferObj);
388	Check4DataBaseError;
389	end;
390	finally
391	bufferObj.Free;
392	end;
393	end;
394
395	end.
396