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);
  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;

end.

Revision:	350
Committed:	Wed Oct 20 14:58:56 2021 UTC (3 years, 1 month ago) by tony
Content type:	text/x-pascal
File size:	12064 byte(s)
Log Message:	Fixed Merged
#	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	45	end;
93
94			implementation
95
96			uses FB25Events,FB25Transaction, FBMessages, FB25Blob,
97	tony	266	FB25Statement, FB25Array, IBUtils, IBExternals;
98	tony	45
99			{ TFB25Attachment }
100
101			procedure TFB25Attachment.CheckHandle;
102			begin
103			if FHandle = nil then
104			IBError(ibxeDatabaseClosed,[nil]);
105			end;
106
107	tony	263	constructor TFB25Attachment.Create(api: TFB25ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
108	tony	45	RaiseExceptionOnConnectError: boolean);
109			begin
110	tony	263	FFirebird25ClientAPI := api;
111	tony	45	if aDPB = nil then
112			begin
113			if RaiseExceptionOnConnectError then
114			IBError(ibxeNoDPB,[nil]);
115			Exit;
116			end;
117	tony	263	inherited Create(api,DatabaseName,aDPB,RaiseExceptionOnConnectError);
118	tony	45	Connect;
119			end;
120
121	tony	263	constructor TFB25Attachment.CreateDatabase(api: TFB25ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
122	tony	45	RaiseExceptionOnError: boolean);
123	tony	56	var sql: AnsiString;
124	tony	45	tr_handle: TISC_TR_HANDLE;
125			begin
126	tony	263	inherited Create(api,DatabaseName,aDPB,RaiseExceptionOnError);
127			FFirebird25ClientAPI := api;
128	tony	45	sql := GenerateCreateDatabaseSQL(DatabaseName,aDPB);
129			tr_handle := nil;
130	tony	263	with FFirebird25ClientAPI do
131	tony	56	if (isc_dsql_execute_immediate(StatusVector, @FHandle, @tr_handle, 0, PAnsiChar(sql),
132	tony	45	SQLDialect, nil) > 0) and RaiseExceptionOnError then
133			IBDataBaseError;
134			if DPB <> nil then
135			{Connect using known parameters}
136			begin
137			Disconnect;
138			Connect;
139	tony	117	end
140			else
141			GetODSAndConnectionInfo;
142	tony	45	end;
143
144	tony	263	constructor TFB25Attachment.CreateDatabase(api: TFB25ClientAPI; sql: AnsiString; aSQLDialect: integer;
145	tony	47	RaiseExceptionOnError: boolean);
146			var tr_handle: TISC_TR_HANDLE;
147			begin
148	tony	263	inherited Create(api,'',nil,RaiseExceptionOnError);
149			FFirebird25ClientAPI := api;
150	tony	47	FSQLDialect := aSQLDialect;
151			tr_handle := nil;
152	tony	263	with FFirebird25ClientAPI do
153	tony	47	begin
154	tony	56	if (isc_dsql_execute_immediate(StatusVector, @FHandle, @tr_handle, 0, PAnsiChar(sql),
155	tony	47	aSQLDialect, nil) > 0) and RaiseExceptionOnError then
156			IBDataBaseError;
157
158			end;
159	tony	117	GetODSAndConnectionInfo;
160			ExtractConnectString(sql,FDatabaseName);
161			DPBFromCreateSQL(sql);
162	tony	47	end;
163
164	tony	143	function TFB25Attachment.GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer
165			): IDBInformation;
166			begin
167	tony	263	Result := TDBInformation.Create(FFirebird25ClientAPI);
168			with FFirebird25ClientAPI, Result as TDBInformation do
169	tony	143	if isc_database_info(StatusVector, @(FHandle), ReqBufLen, ReqBuffer,
170			getBufSize, Buffer) > 0 then
171			IBDataBaseError;
172			end;
173
174	tony	45	procedure TFB25Attachment.Connect;
175			begin
176			FSQLDialect := 3;
177
178	tony	263	with FFirebird25ClientAPI do
179	tony	45	if DPB = nil then
180			begin
181			if (isc_attach_database(StatusVector, Length(FDatabaseName),
182	tony	56	PAnsiChar(FDatabaseName), @FHandle, 0, nil) > 0) and FRaiseExceptionOnConnectError then
183	tony	45	IBDatabaseError;
184			end
185			else
186			begin
187			if (isc_attach_database(StatusVector, Length(FDatabaseName),
188	tony	56	PAnsiChar(FDatabaseName), @FHandle,
189	tony	45	(DPB as TDPB).getDataLength,
190			(DPB as TDPB).getBuffer) > 0 ) and FRaiseExceptionOnConnectError then
191			IBDatabaseError;
192
193			end;
194	tony	117	GetODSAndConnectionInfo;
195	tony	45	end;
196
197			procedure TFB25Attachment.Disconnect(Force: boolean);
198			begin
199			if FHandle = nil then
200			Exit;
201
202			EndAllTransactions;
203			{Disconnect}
204	tony	263	with FFirebird25ClientAPI do
205	tony	45	if (isc_detach_database(StatusVector, @FHandle) > 0) and not Force then
206			IBDatabaseError;
207			FHandle := nil;
208			FHasDefaultCharSet := false;
209			FCodePage := CP_NONE;
210			FCharSetID := 0;
211			end;
212
213			function TFB25Attachment.IsConnected: boolean;
214			begin
215			Result := FHandle <> nil;
216			end;
217
218			procedure TFB25Attachment.DropDatabase;
219			begin
220			CheckHandle;
221			EndAllTransactions;
222	tony	263	with FFirebird25ClientAPI do
223	tony	45	if isc_drop_database(StatusVector, @FHandle) > 0 then
224			IBDatabaseError;
225			FHandle := nil;
226			end;
227
228			function TFB25Attachment.StartTransaction(TPB: array of byte;
229			DefaultCompletion: TTransactionCompletion): ITransaction;
230			begin
231			CheckHandle;
232	tony	263	Result := TFB25Transaction.Create(FFirebird25ClientAPI,self,TPB,DefaultCompletion);
233	tony	45	end;
234
235			function TFB25Attachment.StartTransaction(TPB: ITPB;
236			DefaultCompletion: TTransactionCompletion): ITransaction;
237			begin
238			CheckHandle;
239	tony	263	Result := TFB25Transaction.Create(FFirebird25ClientAPI,self,TPB,DefaultCompletion);
240	tony	45	end;
241
242			function TFB25Attachment.CreateBlob(transaction: ITransaction;
243			BlobMetaData: IBlobMetaData; BPB: IBPB): IBlob;
244			begin
245			CheckHandle;
246			Result := TFB25Blob.Create(self,transaction as TFB25transaction,BlobMetaData,BPB);
247			end;
248
249			function TFB25Attachment.CreateBlob(transaction: ITransaction;
250			SubType: integer; aCharSetID: cardinal; BPB: IBPB): IBlob;
251			begin
252			CheckHandle;
253			Result := TFB25Blob.Create(self,transaction as TFB25transaction,SubType,aCharSetID,BPB);
254			end;
255
256			function TFB25Attachment.OpenBlob(transaction: ITransaction;
257			BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob;
258			begin
259			CheckHandle;
260			Result := TFB25Blob.Create(self,transaction as TFB25transaction,BlobMetaData,BlobID,BPB);
261			end;
262
263	tony	56	procedure TFB25Attachment.ExecImmediate(transaction: ITransaction; sql: AnsiString;
264	tony	45	aSQLDialect: integer);
265			var TRHandle: TISC_TR_HANDLE;
266			begin
267			CheckHandle;
268			TRHandle := (Transaction as TFB25Transaction).Handle;
269	tony	263	with FFirebird25ClientAPI do
270	tony	56	if isc_dsql_execute_immediate(StatusVector, @fHandle, @TRHandle, 0,PAnsiChar(sql), aSQLDialect, nil) > 0 then
271	tony	45	IBDatabaseError;
272			SignalActivity;
273			end;
274
275	tony	56	function TFB25Attachment.Prepare(transaction: ITransaction; sql: AnsiString;
276	tony	350	aSQLDialect: integer; CursorName: AnsiString): IStatement;
277	tony	45	begin
278			CheckHandle;
279			Result := TFB25Statement.Create(self,transaction,sql,aSQLDialect);
280			end;
281
282			function TFB25Attachment.PrepareWithNamedParameters(transaction: ITransaction;
283	tony	270	sql: AnsiString; aSQLDialect: integer; GenerateParamNames: boolean;
284	tony	350	CaseSensitiveParams: boolean; CursorName: AnsiString): IStatement;
285	tony	45	begin
286			CheckHandle;
287			Result := TFB25Statement.CreateWithParameterNames(self,transaction,sql,aSQLDialect,
288	tony	350	GenerateParamNames,CaseSensitiveParams,CursorName);
289	tony	45	end;
290
291			function TFB25Attachment.GetEventHandler(Events: TStrings): IEvents;
292			begin
293			CheckHandle;
294			Result := TFB25Events.Create(self,Events);
295			end;
296
297	tony	291	function TFB25Attachment.OpenArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData;
298	tony	45	ArrayID: TISC_QUAD): IArray;
299			begin
300			CheckHandle;
301			Result := TFB25Array.Create(self,transaction as TFB25Transaction,
302	tony	291	ArrayMetaData,ArrayID);
303	tony	45	end;
304
305			function TFB25Attachment.CreateArray(transaction: ITransaction;
306			ArrayMetaData: IArrayMetaData): IArray;
307			begin
308			CheckHandle;
309			Result := TFB25Array.Create(self,transaction as TFB25Transaction,ArrayMetaData);
310			end;
311
312	tony	47	function TFB25Attachment.CreateArrayMetaData(SQLType: cardinal;
313	tony	56	tableName: AnsiString; columnName: AnsiString; Scale: integer; size: cardinal;
314	tony	47	acharSetID: cardinal; dimensions: cardinal; bounds: TArrayBounds
315			): IArrayMetaData;
316			begin
317	tony	60	Result := TFB25ArrayMetaData.Create(self,SQLType,tableName,ColumnName,Scale,size,acharSetID,dimensions,bounds);
318	tony	47	end;
319
320	tony	45	function TFB25Attachment.GetBlobMetaData(Transaction: ITransaction; tableName,
321	tony	56	columnName: AnsiString): IBlobMetaData;
322	tony	45	begin
323			CheckHandle;
324			Result := TFB25BlobMetaData.Create(self,Transaction as TFB25Transaction,tableName,columnName);
325			end;
326
327			function TFB25Attachment.GetArrayMetaData(Transaction: ITransaction; tableName,
328	tony	56	columnName: AnsiString): IArrayMetaData;
329	tony	45	begin
330			CheckHandle;
331			Result := TFB25ArrayMetaData.Create(self,Transaction as TFB25Transaction,tableName,columnName);
332			end;
333
334	tony	266	procedure ISCVersionCallback(userArg: pointer; text: PAnsiChar); cdecl;
335			begin
336			TStrings(userArg).Add(text);
337			end;
338
339			procedure TFB25Attachment.getFBVersion(version: TStrings);
340			var callback: pointer;
341			begin
342			callback := @ISCVersionCallback;
343	tony	267	version.Clear;
344			with FFirebird25ClientAPI do
345			if isc_version(@FHandle,TISC_CALLBACK(callback),PVoid(version)) > 0 then
346			IBDataBaseError;
347	tony	266	end;
348
349	tony	45	end.
350