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
#	User	Rev	Content
1	tony	45	(*
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	tony	56	{$IFDEF MSWINDOWS}
29			{$DEFINE WINDOWS}
30			{$ENDIF}
31	tony	45
32			{$IFDEF FPC}
33	tony	56	{$mode delphi}
34	tony	45	{$interfaces COM}
35			{$ENDIF}
36
37			interface
38
39			uses
40			Classes, SysUtils, IB, FBAttachment, FB25ClientAPI, IBHeader,
41	tony	56	FBParamBlock, FBOutputBlock, FBActivityMonitor;
42	tony	45
43			type
44			{ TFB25Attachment }
45
46			TFB25Attachment = class(TFBAttachment, IAttachment, IActivityMonitor)
47			private
48			FHandle: TISC_DB_HANDLE;
49	tony	263	FFirebird25ClientAPI: TFB25ClientAPI;
50	tony	45	protected
51			procedure CheckHandle; override;
52			public
53	tony	263	constructor Create(api: TFB25ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
54	tony	45	RaiseExceptionOnConnectError: boolean);
55	tony	263	constructor CreateDatabase(api: TFB25ClientAPI; DatabaseName: AnsiString; aDPB: IDPB; RaiseExceptionOnError: boolean); overload;
56			constructor CreateDatabase(api: TFB25ClientAPI; sql: AnsiString; aSQLDialect: integer;
57	tony	47	RaiseExceptionOnError: boolean); overload;
58	tony	143	function GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer): IDBInformation; override;
59	tony	45	property Handle: TISC_DB_HANDLE read FHandle;
60	tony	263	property Firebird25ClientAPI: TFB25ClientAPI read FFirebird25ClientAPI;
61	tony	45
62			public
63			{IAttachment}
64			procedure Connect;
65			procedure Disconnect(Force: boolean=false); override;
66	tony	117	function IsConnected: boolean; override;
67	tony	45	procedure DropDatabase;
68			function StartTransaction(TPB: array of byte; DefaultCompletion: TTransactionCompletion): ITransaction; override;
69			function StartTransaction(TPB: ITPB; DefaultCompletion: TTransactionCompletion): ITransaction; override;
70	tony	56	procedure ExecImmediate(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer); override;
71	tony	350	function Prepare(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer; CursorName: AnsiString=''): IStatement; override;
72	tony	56	function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
73	tony	270	aSQLDialect: integer; GenerateParamNames: boolean=false;
74	tony	350	CaseSensitiveParams: boolean=false; CursorName: AnsiString=''): IStatement; override;
75	tony	45	function GetEventHandler(Events: TStrings): IEvents; override;
76	tony	291	function CreateBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BPB: IBPB=nil): IBlob; overload; override;
77	tony	45	function CreateBlob(transaction: ITransaction; SubType: integer; aCharSetID: cardinal=0; BPB: IBPB=nil): IBlob; overload;
78	tony	56	function OpenBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload; override;
79	tony	45
80	tony	291	function OpenArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData; ArrayID: TISC_QUAD): IArray; overload; override;
81			function CreateArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData): IArray; overload; override;
82	tony	56	function CreateArrayMetaData(SQLType: cardinal; tableName: AnsiString; columnName: AnsiString;
83	tony	47	Scale: integer; size: cardinal;
84			acharSetID: cardinal; dimensions: cardinal; bounds: TArrayBounds
85			): IArrayMetaData;
86	tony	45
87			{Database Information}
88
89	tony	291	function GetBlobMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IBlobMetaData; override;
90			function GetArrayMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IArrayMetaData; override;
91	tony	266	procedure getFBVersion(version: TStrings);
92	tony	352	function HasScollableCursors: boolean;
93	tony	45	end;
94
95			implementation
96
97			uses FB25Events,FB25Transaction, FBMessages, FB25Blob,
98	tony	266	FB25Statement, FB25Array, IBUtils, IBExternals;
99	tony	45
100			{ TFB25Attachment }
101
102			procedure TFB25Attachment.CheckHandle;
103			begin
104			if FHandle = nil then
105			IBError(ibxeDatabaseClosed,[nil]);
106			end;
107
108	tony	263	constructor TFB25Attachment.Create(api: TFB25ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
109	tony	45	RaiseExceptionOnConnectError: boolean);
110			begin
111	tony	263	FFirebird25ClientAPI := api;
112	tony	45	if aDPB = nil then
113			begin
114			if RaiseExceptionOnConnectError then
115			IBError(ibxeNoDPB,[nil]);
116			Exit;
117			end;
118	tony	263	inherited Create(api,DatabaseName,aDPB,RaiseExceptionOnConnectError);
119	tony	45	Connect;
120			end;
121
122	tony	263	constructor TFB25Attachment.CreateDatabase(api: TFB25ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
123	tony	45	RaiseExceptionOnError: boolean);
124	tony	56	var sql: AnsiString;
125	tony	45	tr_handle: TISC_TR_HANDLE;
126			begin
127	tony	263	inherited Create(api,DatabaseName,aDPB,RaiseExceptionOnError);
128			FFirebird25ClientAPI := api;
129	tony	45	sql := GenerateCreateDatabaseSQL(DatabaseName,aDPB);
130			tr_handle := nil;
131	tony	263	with FFirebird25ClientAPI do
132	tony	56	if (isc_dsql_execute_immediate(StatusVector, @FHandle, @tr_handle, 0, PAnsiChar(sql),
133	tony	45	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	tony	117	end
141			else
142			GetODSAndConnectionInfo;
143	tony	45	end;
144
145	tony	263	constructor TFB25Attachment.CreateDatabase(api: TFB25ClientAPI; sql: AnsiString; aSQLDialect: integer;
146	tony	47	RaiseExceptionOnError: boolean);
147			var tr_handle: TISC_TR_HANDLE;
148			begin
149	tony	263	inherited Create(api,'',nil,RaiseExceptionOnError);
150			FFirebird25ClientAPI := api;
151	tony	47	FSQLDialect := aSQLDialect;
152			tr_handle := nil;
153	tony	263	with FFirebird25ClientAPI do
154	tony	47	begin
155	tony	56	if (isc_dsql_execute_immediate(StatusVector, @FHandle, @tr_handle, 0, PAnsiChar(sql),
156	tony	47	aSQLDialect, nil) > 0) and RaiseExceptionOnError then
157			IBDataBaseError;
158
159			end;
160	tony	117	GetODSAndConnectionInfo;
161			ExtractConnectString(sql,FDatabaseName);
162			DPBFromCreateSQL(sql);
163	tony	47	end;
164
165	tony	143	function TFB25Attachment.GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer
166			): IDBInformation;
167			begin
168	tony	263	Result := TDBInformation.Create(FFirebird25ClientAPI);
169			with FFirebird25ClientAPI, Result as TDBInformation do
170	tony	143	if isc_database_info(StatusVector, @(FHandle), ReqBufLen, ReqBuffer,
171			getBufSize, Buffer) > 0 then
172			IBDataBaseError;
173			end;
174
175	tony	45	procedure TFB25Attachment.Connect;
176			begin
177			FSQLDialect := 3;
178
179	tony	263	with FFirebird25ClientAPI do
180	tony	45	if DPB = nil then
181			begin
182			if (isc_attach_database(StatusVector, Length(FDatabaseName),
183	tony	56	PAnsiChar(FDatabaseName), @FHandle, 0, nil) > 0) and FRaiseExceptionOnConnectError then
184	tony	45	IBDatabaseError;
185			end
186			else
187			begin
188			if (isc_attach_database(StatusVector, Length(FDatabaseName),
189	tony	56	PAnsiChar(FDatabaseName), @FHandle,
190	tony	45	(DPB as TDPB).getDataLength,
191			(DPB as TDPB).getBuffer) > 0 ) and FRaiseExceptionOnConnectError then
192			IBDatabaseError;
193
194			end;
195	tony	117	GetODSAndConnectionInfo;
196	tony	45	end;
197
198			procedure TFB25Attachment.Disconnect(Force: boolean);
199			begin
200			if FHandle = nil then
201			Exit;
202
203			EndAllTransactions;
204			{Disconnect}
205	tony	263	with FFirebird25ClientAPI do
206	tony	45	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	tony	263	with FFirebird25ClientAPI do
224	tony	45	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	tony	263	Result := TFB25Transaction.Create(FFirebird25ClientAPI,self,TPB,DefaultCompletion);
234	tony	45	end;
235
236			function TFB25Attachment.StartTransaction(TPB: ITPB;
237			DefaultCompletion: TTransactionCompletion): ITransaction;
238			begin
239			CheckHandle;
240	tony	263	Result := TFB25Transaction.Create(FFirebird25ClientAPI,self,TPB,DefaultCompletion);
241	tony	45	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	tony	56	procedure TFB25Attachment.ExecImmediate(transaction: ITransaction; sql: AnsiString;
265	tony	45	aSQLDialect: integer);
266			var TRHandle: TISC_TR_HANDLE;
267			begin
268			CheckHandle;
269			TRHandle := (Transaction as TFB25Transaction).Handle;
270	tony	263	with FFirebird25ClientAPI do
271	tony	56	if isc_dsql_execute_immediate(StatusVector, @fHandle, @TRHandle, 0,PAnsiChar(sql), aSQLDialect, nil) > 0 then
272	tony	45	IBDatabaseError;
273			SignalActivity;
274			end;
275
276	tony	56	function TFB25Attachment.Prepare(transaction: ITransaction; sql: AnsiString;
277	tony	350	aSQLDialect: integer; CursorName: AnsiString): IStatement;
278	tony	45	begin
279			CheckHandle;
280			Result := TFB25Statement.Create(self,transaction,sql,aSQLDialect);
281			end;
282
283			function TFB25Attachment.PrepareWithNamedParameters(transaction: ITransaction;
284	tony	270	sql: AnsiString; aSQLDialect: integer; GenerateParamNames: boolean;
285	tony	350	CaseSensitiveParams: boolean; CursorName: AnsiString): IStatement;
286	tony	45	begin
287			CheckHandle;
288			Result := TFB25Statement.CreateWithParameterNames(self,transaction,sql,aSQLDialect,
289	tony	350	GenerateParamNames,CaseSensitiveParams,CursorName);
290	tony	45	end;
291
292			function TFB25Attachment.GetEventHandler(Events: TStrings): IEvents;
293			begin
294			CheckHandle;
295			Result := TFB25Events.Create(self,Events);
296			end;
297
298	tony	291	function TFB25Attachment.OpenArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData;
299	tony	45	ArrayID: TISC_QUAD): IArray;
300			begin
301			CheckHandle;
302			Result := TFB25Array.Create(self,transaction as TFB25Transaction,
303	tony	291	ArrayMetaData,ArrayID);
304	tony	45	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	tony	47	function TFB25Attachment.CreateArrayMetaData(SQLType: cardinal;
314	tony	56	tableName: AnsiString; columnName: AnsiString; Scale: integer; size: cardinal;
315	tony	47	acharSetID: cardinal; dimensions: cardinal; bounds: TArrayBounds
316			): IArrayMetaData;
317			begin
318	tony	60	Result := TFB25ArrayMetaData.Create(self,SQLType,tableName,ColumnName,Scale,size,acharSetID,dimensions,bounds);
319	tony	47	end;
320
321	tony	45	function TFB25Attachment.GetBlobMetaData(Transaction: ITransaction; tableName,
322	tony	56	columnName: AnsiString): IBlobMetaData;
323	tony	45	begin
324			CheckHandle;
325			Result := TFB25BlobMetaData.Create(self,Transaction as TFB25Transaction,tableName,columnName);
326			end;
327
328			function TFB25Attachment.GetArrayMetaData(Transaction: ITransaction; tableName,
329	tony	56	columnName: AnsiString): IArrayMetaData;
330	tony	45	begin
331			CheckHandle;
332			Result := TFB25ArrayMetaData.Create(self,Transaction as TFB25Transaction,tableName,columnName);
333			end;
334
335	tony	266	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	tony	267	version.Clear;
345			with FFirebird25ClientAPI do
346			if isc_version(@FHandle,TISC_CALLBACK(callback),PVoid(version)) > 0 then
347			IBDataBaseError;
348	tony	266	end;
349
350	tony	352	function TFB25Attachment.HasScollableCursors: boolean;
351			begin
352			Result := false;
353			end;
354
355	tony	45	end.
356