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): 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;
    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; 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 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): 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;

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:	267
Committed:	Fri Dec 28 10:44:23 2018 UTC (5 years, 10 months ago) by tony
Content type:	text/x-pascal
File size:	13194 byte(s)
Log Message:	Fixes 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			function Prepare(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer): IStatement; override;
72			function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
73	tony	45	aSQLDialect: integer; GenerateParamNames: boolean=false): IStatement; override;
74			function GetEventHandler(Events: TStrings): IEvents; override;
75	tony	56	function CreateBlob(transaction: ITransaction; RelationName, ColumnName: AnsiString; BPB: IBPB=nil): IBlob; overload;
76	tony	45	function CreateBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BPB: IBPB=nil): IBlob; overload;
77			function CreateBlob(transaction: ITransaction; SubType: integer; aCharSetID: cardinal=0; BPB: IBPB=nil): IBlob; overload;
78	tony	56	function OpenBlob(transaction: ITransaction; RelationName, ColumnName: AnsiString; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload;
79			function OpenBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload; override;
80	tony	45
81	tony	56	function OpenArray(transaction: ITransaction; RelationName, ColumnName: AnsiString;
82	tony	45	ArrayID: TISC_QUAD): IArray;
83	tony	56	function CreateArray(transaction: ITransaction; RelationName, ColumnName: AnsiString
84	tony	45	): IArray; overload;
85			function CreateArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData): IArray; overload;
86	tony	56	function CreateArrayMetaData(SQLType: cardinal; tableName: AnsiString; columnName: AnsiString;
87	tony	47	Scale: integer; size: cardinal;
88			acharSetID: cardinal; dimensions: cardinal; bounds: TArrayBounds
89			): IArrayMetaData;
90	tony	45
91			{Database Information}
92
93	tony	56	function GetBlobMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IBlobMetaData;
94			function GetArrayMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IArrayMetaData;
95	tony	266	procedure getFBVersion(version: TStrings);
96	tony	45	end;
97
98			implementation
99
100			uses FB25Events,FB25Transaction, FBMessages, FB25Blob,
101	tony	266	FB25Statement, FB25Array, IBUtils, IBExternals;
102	tony	45
103			{ TFB25Attachment }
104
105			procedure TFB25Attachment.CheckHandle;
106			begin
107			if FHandle = nil then
108			IBError(ibxeDatabaseClosed,[nil]);
109			end;
110
111	tony	263	constructor TFB25Attachment.Create(api: TFB25ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
112	tony	45	RaiseExceptionOnConnectError: boolean);
113			begin
114	tony	263	FFirebird25ClientAPI := api;
115	tony	45	if aDPB = nil then
116			begin
117			if RaiseExceptionOnConnectError then
118			IBError(ibxeNoDPB,[nil]);
119			Exit;
120			end;
121	tony	263	inherited Create(api,DatabaseName,aDPB,RaiseExceptionOnConnectError);
122	tony	45	Connect;
123			end;
124
125	tony	263	constructor TFB25Attachment.CreateDatabase(api: TFB25ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
126	tony	45	RaiseExceptionOnError: boolean);
127	tony	56	var sql: AnsiString;
128	tony	45	tr_handle: TISC_TR_HANDLE;
129			begin
130	tony	263	inherited Create(api,DatabaseName,aDPB,RaiseExceptionOnError);
131			FFirebird25ClientAPI := api;
132	tony	45	sql := GenerateCreateDatabaseSQL(DatabaseName,aDPB);
133			tr_handle := nil;
134	tony	263	with FFirebird25ClientAPI do
135	tony	56	if (isc_dsql_execute_immediate(StatusVector, @FHandle, @tr_handle, 0, PAnsiChar(sql),
136	tony	45	SQLDialect, nil) > 0) and RaiseExceptionOnError then
137			IBDataBaseError;
138			if DPB <> nil then
139			{Connect using known parameters}
140			begin
141			Disconnect;
142			Connect;
143	tony	117	end
144			else
145			GetODSAndConnectionInfo;
146	tony	45	end;
147
148	tony	263	constructor TFB25Attachment.CreateDatabase(api: TFB25ClientAPI; sql: AnsiString; aSQLDialect: integer;
149	tony	47	RaiseExceptionOnError: boolean);
150			var tr_handle: TISC_TR_HANDLE;
151			begin
152	tony	263	inherited Create(api,'',nil,RaiseExceptionOnError);
153			FFirebird25ClientAPI := api;
154	tony	47	FSQLDialect := aSQLDialect;
155			tr_handle := nil;
156	tony	263	with FFirebird25ClientAPI do
157	tony	47	begin
158	tony	56	if (isc_dsql_execute_immediate(StatusVector, @FHandle, @tr_handle, 0, PAnsiChar(sql),
159	tony	47	aSQLDialect, nil) > 0) and RaiseExceptionOnError then
160			IBDataBaseError;
161
162			end;
163	tony	117	GetODSAndConnectionInfo;
164			ExtractConnectString(sql,FDatabaseName);
165			DPBFromCreateSQL(sql);
166	tony	47	end;
167
168	tony	143	function TFB25Attachment.GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer
169			): IDBInformation;
170			begin
171	tony	263	Result := TDBInformation.Create(FFirebird25ClientAPI);
172			with FFirebird25ClientAPI, Result as TDBInformation do
173	tony	143	if isc_database_info(StatusVector, @(FHandle), ReqBufLen, ReqBuffer,
174			getBufSize, Buffer) > 0 then
175			IBDataBaseError;
176			end;
177
178	tony	45	procedure TFB25Attachment.Connect;
179			begin
180			FSQLDialect := 3;
181
182	tony	263	with FFirebird25ClientAPI do
183	tony	45	if DPB = nil then
184			begin
185			if (isc_attach_database(StatusVector, Length(FDatabaseName),
186	tony	56	PAnsiChar(FDatabaseName), @FHandle, 0, nil) > 0) and FRaiseExceptionOnConnectError then
187	tony	45	IBDatabaseError;
188			end
189			else
190			begin
191			if (isc_attach_database(StatusVector, Length(FDatabaseName),
192	tony	56	PAnsiChar(FDatabaseName), @FHandle,
193	tony	45	(DPB as TDPB).getDataLength,
194			(DPB as TDPB).getBuffer) > 0 ) and FRaiseExceptionOnConnectError then
195			IBDatabaseError;
196
197			end;
198	tony	117	GetODSAndConnectionInfo;
199	tony	45	end;
200
201			procedure TFB25Attachment.Disconnect(Force: boolean);
202			begin
203			if FHandle = nil then
204			Exit;
205
206			EndAllTransactions;
207			{Disconnect}
208	tony	263	with FFirebird25ClientAPI do
209	tony	45	if (isc_detach_database(StatusVector, @FHandle) > 0) and not Force then
210			IBDatabaseError;
211			FHandle := nil;
212			FHasDefaultCharSet := false;
213			FCodePage := CP_NONE;
214			FCharSetID := 0;
215			end;
216
217			function TFB25Attachment.IsConnected: boolean;
218			begin
219			Result := FHandle <> nil;
220			end;
221
222			procedure TFB25Attachment.DropDatabase;
223			begin
224			CheckHandle;
225			EndAllTransactions;
226	tony	263	with FFirebird25ClientAPI do
227	tony	45	if isc_drop_database(StatusVector, @FHandle) > 0 then
228			IBDatabaseError;
229			FHandle := nil;
230			end;
231
232			function TFB25Attachment.StartTransaction(TPB: array of byte;
233			DefaultCompletion: TTransactionCompletion): ITransaction;
234			begin
235			CheckHandle;
236	tony	263	Result := TFB25Transaction.Create(FFirebird25ClientAPI,self,TPB,DefaultCompletion);
237	tony	45	end;
238
239			function TFB25Attachment.StartTransaction(TPB: ITPB;
240			DefaultCompletion: TTransactionCompletion): ITransaction;
241			begin
242			CheckHandle;
243	tony	263	Result := TFB25Transaction.Create(FFirebird25ClientAPI,self,TPB,DefaultCompletion);
244	tony	45	end;
245
246			function TFB25Attachment.CreateBlob(transaction: ITransaction; RelationName,
247	tony	56	ColumnName: AnsiString; BPB: IBPB): IBlob;
248	tony	45	begin
249			CheckHandle;
250			Result := TFB25Blob.Create(self,transaction as TFB25transaction,
251			TFB25BlobMetaData.Create(self,Transaction as TFB25Transaction,RelationName,ColumnName),BPB);
252			end;
253
254			function TFB25Attachment.CreateBlob(transaction: ITransaction;
255			BlobMetaData: IBlobMetaData; BPB: IBPB): IBlob;
256			begin
257			CheckHandle;
258			Result := TFB25Blob.Create(self,transaction as TFB25transaction,BlobMetaData,BPB);
259			end;
260
261			function TFB25Attachment.CreateBlob(transaction: ITransaction;
262			SubType: integer; aCharSetID: cardinal; BPB: IBPB): IBlob;
263			begin
264			CheckHandle;
265			Result := TFB25Blob.Create(self,transaction as TFB25transaction,SubType,aCharSetID,BPB);
266			end;
267
268			function TFB25Attachment.OpenBlob(transaction: ITransaction; RelationName,
269	tony	56	ColumnName: AnsiString; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob;
270	tony	45	begin
271			CheckHandle;
272			Result := TFB25Blob.Create(self,transaction as TFB25transaction,
273			TFB25BlobMetaData.Create(self,Transaction as TFB25Transaction,RelationName,ColumnName),
274			BlobID,BPB);
275			end;
276
277			function TFB25Attachment.OpenBlob(transaction: ITransaction;
278			BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob;
279			begin
280			CheckHandle;
281			Result := TFB25Blob.Create(self,transaction as TFB25transaction,BlobMetaData,BlobID,BPB);
282			end;
283
284	tony	56	procedure TFB25Attachment.ExecImmediate(transaction: ITransaction; sql: AnsiString;
285	tony	45	aSQLDialect: integer);
286			var TRHandle: TISC_TR_HANDLE;
287			begin
288			CheckHandle;
289			TRHandle := (Transaction as TFB25Transaction).Handle;
290	tony	263	with FFirebird25ClientAPI do
291	tony	56	if isc_dsql_execute_immediate(StatusVector, @fHandle, @TRHandle, 0,PAnsiChar(sql), aSQLDialect, nil) > 0 then
292	tony	45	IBDatabaseError;
293			SignalActivity;
294			end;
295
296	tony	56	function TFB25Attachment.Prepare(transaction: ITransaction; sql: AnsiString;
297	tony	45	aSQLDialect: integer): IStatement;
298			begin
299			CheckHandle;
300			Result := TFB25Statement.Create(self,transaction,sql,aSQLDialect);
301			end;
302
303			function TFB25Attachment.PrepareWithNamedParameters(transaction: ITransaction;
304	tony	56	sql: AnsiString; aSQLDialect: integer; GenerateParamNames: boolean): IStatement;
305	tony	45	begin
306			CheckHandle;
307			Result := TFB25Statement.CreateWithParameterNames(self,transaction,sql,aSQLDialect,
308			GenerateParamNames);
309			end;
310
311			function TFB25Attachment.GetEventHandler(Events: TStrings): IEvents;
312			begin
313			CheckHandle;
314			Result := TFB25Events.Create(self,Events);
315			end;
316
317	tony	56	function TFB25Attachment.OpenArray(transaction: ITransaction; RelationName, ColumnName: AnsiString;
318	tony	45	ArrayID: TISC_QUAD): IArray;
319			begin
320			CheckHandle;
321			Result := TFB25Array.Create(self,transaction as TFB25Transaction,
322			GetArrayMetaData(transaction,RelationName,ColumnName),ArrayID);
323			end;
324
325	tony	56	function TFB25Attachment.CreateArray(transaction: ITransaction; RelationName, ColumnName: AnsiString): IArray;
326	tony	45	begin
327			CheckHandle;
328			Result := TFB25Array.Create(self,transaction as TFB25Transaction,
329			GetArrayMetaData(transaction,RelationName,ColumnName));
330			end;
331
332			function TFB25Attachment.CreateArray(transaction: ITransaction;
333			ArrayMetaData: IArrayMetaData): IArray;
334			begin
335			CheckHandle;
336			Result := TFB25Array.Create(self,transaction as TFB25Transaction,ArrayMetaData);
337			end;
338
339	tony	47	function TFB25Attachment.CreateArrayMetaData(SQLType: cardinal;
340	tony	56	tableName: AnsiString; columnName: AnsiString; Scale: integer; size: cardinal;
341	tony	47	acharSetID: cardinal; dimensions: cardinal; bounds: TArrayBounds
342			): IArrayMetaData;
343			begin
344	tony	60	Result := TFB25ArrayMetaData.Create(self,SQLType,tableName,ColumnName,Scale,size,acharSetID,dimensions,bounds);
345	tony	47	end;
346
347	tony	45	function TFB25Attachment.GetBlobMetaData(Transaction: ITransaction; tableName,
348	tony	56	columnName: AnsiString): IBlobMetaData;
349	tony	45	begin
350			CheckHandle;
351			Result := TFB25BlobMetaData.Create(self,Transaction as TFB25Transaction,tableName,columnName);
352			end;
353
354			function TFB25Attachment.GetArrayMetaData(Transaction: ITransaction; tableName,
355	tony	56	columnName: AnsiString): IArrayMetaData;
356	tony	45	begin
357			CheckHandle;
358			Result := TFB25ArrayMetaData.Create(self,Transaction as TFB25Transaction,tableName,columnName);
359			end;
360
361	tony	266	procedure ISCVersionCallback(userArg: pointer; text: PAnsiChar); cdecl;
362			begin
363			TStrings(userArg).Add(text);
364			end;
365
366			procedure TFB25Attachment.getFBVersion(version: TStrings);
367			var callback: pointer;
368			begin
369			callback := @ISCVersionCallback;
370	tony	267	version.Clear;
371			with FFirebird25ClientAPI do
372			if isc_version(@FHandle,TISC_CALLBACK(callback),PVoid(version)) > 0 then
373			IBDataBaseError;
374	tony	266	end;
375
376	tony	45	end.
377