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;
                       CaseSensitiveParams: 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;
  CaseSensitiveParams: boolean): IStatement;
begin
  CheckHandle;
  Result := TFB25Statement.CreateWithParameterNames(self,transaction,sql,aSQLDialect,
         GenerateParamNames,CaseSensitiveParams);
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:	270
Committed:	Fri Jan 18 11:10:37 2019 UTC (5 years, 10 months ago) by tony
Content type:	text/x-pascal
File size:	13305 byte(s)
Log Message:	Fixes merged
#	Content
1	(*
2	* Firebird Interface (fbintf). The fbintf components provide a set of
3	* Pascal language bindings for the Firebird API.
4	*
5	* The contents of this file are subject to the Initial Developer's
6	* Public License Version 1.0 (the "License"); you may not use this
7	* file except in compliance with the License. You may obtain a copy
8	* of the License here:
9	*
10	* http://www.firebirdsql.org/index.php?op=doc&id=idpl
11	*
12	* Software distributed under the License is distributed on an "AS
13	* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
14	* implied. See the License for the specific language governing rights
15	* and limitations under the License.
16	*
17	* The Initial Developer of the Original Code is Tony Whyman.
18	*
19	* The Original Code is (C) 2016 Tony Whyman, MWA Software
20	* (http://www.mwasoftware.co.uk).
21	*
22	* All Rights Reserved.
23	*
24	* Contributor(s): ______________________________________.
25	*
26	*)
27	unit FB25Attachment;
28	{$IFDEF MSWINDOWS}
29	{$DEFINE WINDOWS}
30	{$ENDIF}
31
32	{$IFDEF FPC}
33	{$mode delphi}
34	{$interfaces COM}
35	{$ENDIF}
36
37	interface
38
39	uses
40	Classes, SysUtils, IB, FBAttachment, FB25ClientAPI, IBHeader,
41	FBParamBlock, FBOutputBlock, FBActivityMonitor;
42
43	type
44	{ TFB25Attachment }
45
46	TFB25Attachment = class(TFBAttachment, IAttachment, IActivityMonitor)
47	private
48	FHandle: TISC_DB_HANDLE;
49	FFirebird25ClientAPI: TFB25ClientAPI;
50	protected
51	procedure CheckHandle; override;
52	public
53	constructor Create(api: TFB25ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
54	RaiseExceptionOnConnectError: boolean);
55	constructor CreateDatabase(api: TFB25ClientAPI; DatabaseName: AnsiString; aDPB: IDPB; RaiseExceptionOnError: boolean); overload;
56	constructor CreateDatabase(api: TFB25ClientAPI; sql: AnsiString; aSQLDialect: integer;
57	RaiseExceptionOnError: boolean); overload;
58	function GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer): IDBInformation; override;
59	property Handle: TISC_DB_HANDLE read FHandle;
60	property Firebird25ClientAPI: TFB25ClientAPI read FFirebird25ClientAPI;
61
62	public
63	{IAttachment}
64	procedure Connect;
65	procedure Disconnect(Force: boolean=false); override;
66	function IsConnected: boolean; override;
67	procedure DropDatabase;
68	function StartTransaction(TPB: array of byte; DefaultCompletion: TTransactionCompletion): ITransaction; override;
69	function StartTransaction(TPB: ITPB; DefaultCompletion: TTransactionCompletion): ITransaction; override;
70	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	aSQLDialect: integer; GenerateParamNames: boolean=false;
74	CaseSensitiveParams: boolean=false): IStatement; override;
75	function GetEventHandler(Events: TStrings): IEvents; override;
76	function CreateBlob(transaction: ITransaction; RelationName, ColumnName: AnsiString; BPB: IBPB=nil): IBlob; overload;
77	function CreateBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BPB: IBPB=nil): IBlob; overload;
78	function CreateBlob(transaction: ITransaction; SubType: integer; aCharSetID: cardinal=0; BPB: IBPB=nil): IBlob; overload;
79	function OpenBlob(transaction: ITransaction; RelationName, ColumnName: AnsiString; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload;
80	function OpenBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload; override;
81
82	function OpenArray(transaction: ITransaction; RelationName, ColumnName: AnsiString;
83	ArrayID: TISC_QUAD): IArray;
84	function CreateArray(transaction: ITransaction; RelationName, ColumnName: AnsiString
85	): IArray; overload;
86	function CreateArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData): IArray; overload;
87	function CreateArrayMetaData(SQLType: cardinal; tableName: AnsiString; columnName: AnsiString;
88	Scale: integer; size: cardinal;
89	acharSetID: cardinal; dimensions: cardinal; bounds: TArrayBounds
90	): IArrayMetaData;
91
92	{Database Information}
93
94	function GetBlobMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IBlobMetaData;
95	function GetArrayMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IArrayMetaData;
96	procedure getFBVersion(version: TStrings);
97	end;
98
99	implementation
100
101	uses FB25Events,FB25Transaction, FBMessages, FB25Blob,
102	FB25Statement, FB25Array, IBUtils, IBExternals;
103
104	{ TFB25Attachment }
105
106	procedure TFB25Attachment.CheckHandle;
107	begin
108	if FHandle = nil then
109	IBError(ibxeDatabaseClosed,[nil]);
110	end;
111
112	constructor TFB25Attachment.Create(api: TFB25ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
113	RaiseExceptionOnConnectError: boolean);
114	begin
115	FFirebird25ClientAPI := api;
116	if aDPB = nil then
117	begin
118	if RaiseExceptionOnConnectError then
119	IBError(ibxeNoDPB,[nil]);
120	Exit;
121	end;
122	inherited Create(api,DatabaseName,aDPB,RaiseExceptionOnConnectError);
123	Connect;
124	end;
125
126	constructor TFB25Attachment.CreateDatabase(api: TFB25ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
127	RaiseExceptionOnError: boolean);
128	var sql: AnsiString;
129	tr_handle: TISC_TR_HANDLE;
130	begin
131	inherited Create(api,DatabaseName,aDPB,RaiseExceptionOnError);
132	FFirebird25ClientAPI := api;
133	sql := GenerateCreateDatabaseSQL(DatabaseName,aDPB);
134	tr_handle := nil;
135	with FFirebird25ClientAPI do
136	if (isc_dsql_execute_immediate(StatusVector, @FHandle, @tr_handle, 0, PAnsiChar(sql),
137	SQLDialect, nil) > 0) and RaiseExceptionOnError then
138	IBDataBaseError;
139	if DPB <> nil then
140	{Connect using known parameters}
141	begin
142	Disconnect;
143	Connect;
144	end
145	else
146	GetODSAndConnectionInfo;
147	end;
148
149	constructor TFB25Attachment.CreateDatabase(api: TFB25ClientAPI; sql: AnsiString; aSQLDialect: integer;
150	RaiseExceptionOnError: boolean);
151	var tr_handle: TISC_TR_HANDLE;
152	begin
153	inherited Create(api,'',nil,RaiseExceptionOnError);
154	FFirebird25ClientAPI := api;
155	FSQLDialect := aSQLDialect;
156	tr_handle := nil;
157	with FFirebird25ClientAPI do
158	begin
159	if (isc_dsql_execute_immediate(StatusVector, @FHandle, @tr_handle, 0, PAnsiChar(sql),
160	aSQLDialect, nil) > 0) and RaiseExceptionOnError then
161	IBDataBaseError;
162
163	end;
164	GetODSAndConnectionInfo;
165	ExtractConnectString(sql,FDatabaseName);
166	DPBFromCreateSQL(sql);
167	end;
168
169	function TFB25Attachment.GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer
170	): IDBInformation;
171	begin
172	Result := TDBInformation.Create(FFirebird25ClientAPI);
173	with FFirebird25ClientAPI, Result as TDBInformation do
174	if isc_database_info(StatusVector, @(FHandle), ReqBufLen, ReqBuffer,
175	getBufSize, Buffer) > 0 then
176	IBDataBaseError;
177	end;
178
179	procedure TFB25Attachment.Connect;
180	begin
181	FSQLDialect := 3;
182
183	with FFirebird25ClientAPI do
184	if DPB = nil then
185	begin
186	if (isc_attach_database(StatusVector, Length(FDatabaseName),
187	PAnsiChar(FDatabaseName), @FHandle, 0, nil) > 0) and FRaiseExceptionOnConnectError then
188	IBDatabaseError;
189	end
190	else
191	begin
192	if (isc_attach_database(StatusVector, Length(FDatabaseName),
193	PAnsiChar(FDatabaseName), @FHandle,
194	(DPB as TDPB).getDataLength,
195	(DPB as TDPB).getBuffer) > 0 ) and FRaiseExceptionOnConnectError then
196	IBDatabaseError;
197
198	end;
199	GetODSAndConnectionInfo;
200	end;
201
202	procedure TFB25Attachment.Disconnect(Force: boolean);
203	begin
204	if FHandle = nil then
205	Exit;
206
207	EndAllTransactions;
208	{Disconnect}
209	with FFirebird25ClientAPI do
210	if (isc_detach_database(StatusVector, @FHandle) > 0) and not Force then
211	IBDatabaseError;
212	FHandle := nil;
213	FHasDefaultCharSet := false;
214	FCodePage := CP_NONE;
215	FCharSetID := 0;
216	end;
217
218	function TFB25Attachment.IsConnected: boolean;
219	begin
220	Result := FHandle <> nil;
221	end;
222
223	procedure TFB25Attachment.DropDatabase;
224	begin
225	CheckHandle;
226	EndAllTransactions;
227	with FFirebird25ClientAPI do
228	if isc_drop_database(StatusVector, @FHandle) > 0 then
229	IBDatabaseError;
230	FHandle := nil;
231	end;
232
233	function TFB25Attachment.StartTransaction(TPB: array of byte;
234	DefaultCompletion: TTransactionCompletion): ITransaction;
235	begin
236	CheckHandle;
237	Result := TFB25Transaction.Create(FFirebird25ClientAPI,self,TPB,DefaultCompletion);
238	end;
239
240	function TFB25Attachment.StartTransaction(TPB: ITPB;
241	DefaultCompletion: TTransactionCompletion): ITransaction;
242	begin
243	CheckHandle;
244	Result := TFB25Transaction.Create(FFirebird25ClientAPI,self,TPB,DefaultCompletion);
245	end;
246
247	function TFB25Attachment.CreateBlob(transaction: ITransaction; RelationName,
248	ColumnName: AnsiString; BPB: IBPB): IBlob;
249	begin
250	CheckHandle;
251	Result := TFB25Blob.Create(self,transaction as TFB25transaction,
252	TFB25BlobMetaData.Create(self,Transaction as TFB25Transaction,RelationName,ColumnName),BPB);
253	end;
254
255	function TFB25Attachment.CreateBlob(transaction: ITransaction;
256	BlobMetaData: IBlobMetaData; BPB: IBPB): IBlob;
257	begin
258	CheckHandle;
259	Result := TFB25Blob.Create(self,transaction as TFB25transaction,BlobMetaData,BPB);
260	end;
261
262	function TFB25Attachment.CreateBlob(transaction: ITransaction;
263	SubType: integer; aCharSetID: cardinal; BPB: IBPB): IBlob;
264	begin
265	CheckHandle;
266	Result := TFB25Blob.Create(self,transaction as TFB25transaction,SubType,aCharSetID,BPB);
267	end;
268
269	function TFB25Attachment.OpenBlob(transaction: ITransaction; RelationName,
270	ColumnName: AnsiString; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob;
271	begin
272	CheckHandle;
273	Result := TFB25Blob.Create(self,transaction as TFB25transaction,
274	TFB25BlobMetaData.Create(self,Transaction as TFB25Transaction,RelationName,ColumnName),
275	BlobID,BPB);
276	end;
277
278	function TFB25Attachment.OpenBlob(transaction: ITransaction;
279	BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob;
280	begin
281	CheckHandle;
282	Result := TFB25Blob.Create(self,transaction as TFB25transaction,BlobMetaData,BlobID,BPB);
283	end;
284
285	procedure TFB25Attachment.ExecImmediate(transaction: ITransaction; sql: AnsiString;
286	aSQLDialect: integer);
287	var TRHandle: TISC_TR_HANDLE;
288	begin
289	CheckHandle;
290	TRHandle := (Transaction as TFB25Transaction).Handle;
291	with FFirebird25ClientAPI do
292	if isc_dsql_execute_immediate(StatusVector, @fHandle, @TRHandle, 0,PAnsiChar(sql), aSQLDialect, nil) > 0 then
293	IBDatabaseError;
294	SignalActivity;
295	end;
296
297	function TFB25Attachment.Prepare(transaction: ITransaction; sql: AnsiString;
298	aSQLDialect: integer): IStatement;
299	begin
300	CheckHandle;
301	Result := TFB25Statement.Create(self,transaction,sql,aSQLDialect);
302	end;
303
304	function TFB25Attachment.PrepareWithNamedParameters(transaction: ITransaction;
305	sql: AnsiString; aSQLDialect: integer; GenerateParamNames: boolean;
306	CaseSensitiveParams: boolean): IStatement;
307	begin
308	CheckHandle;
309	Result := TFB25Statement.CreateWithParameterNames(self,transaction,sql,aSQLDialect,
310	GenerateParamNames,CaseSensitiveParams);
311	end;
312
313	function TFB25Attachment.GetEventHandler(Events: TStrings): IEvents;
314	begin
315	CheckHandle;
316	Result := TFB25Events.Create(self,Events);
317	end;
318
319	function TFB25Attachment.OpenArray(transaction: ITransaction; RelationName, ColumnName: AnsiString;
320	ArrayID: TISC_QUAD): IArray;
321	begin
322	CheckHandle;
323	Result := TFB25Array.Create(self,transaction as TFB25Transaction,
324	GetArrayMetaData(transaction,RelationName,ColumnName),ArrayID);
325	end;
326
327	function TFB25Attachment.CreateArray(transaction: ITransaction; RelationName, ColumnName: AnsiString): IArray;
328	begin
329	CheckHandle;
330	Result := TFB25Array.Create(self,transaction as TFB25Transaction,
331	GetArrayMetaData(transaction,RelationName,ColumnName));
332	end;
333
334	function TFB25Attachment.CreateArray(transaction: ITransaction;
335	ArrayMetaData: IArrayMetaData): IArray;
336	begin
337	CheckHandle;
338	Result := TFB25Array.Create(self,transaction as TFB25Transaction,ArrayMetaData);
339	end;
340
341	function TFB25Attachment.CreateArrayMetaData(SQLType: cardinal;
342	tableName: AnsiString; columnName: AnsiString; Scale: integer; size: cardinal;
343	acharSetID: cardinal; dimensions: cardinal; bounds: TArrayBounds
344	): IArrayMetaData;
345	begin
346	Result := TFB25ArrayMetaData.Create(self,SQLType,tableName,ColumnName,Scale,size,acharSetID,dimensions,bounds);
347	end;
348
349	function TFB25Attachment.GetBlobMetaData(Transaction: ITransaction; tableName,
350	columnName: AnsiString): IBlobMetaData;
351	begin
352	CheckHandle;
353	Result := TFB25BlobMetaData.Create(self,Transaction as TFB25Transaction,tableName,columnName);
354	end;
355
356	function TFB25Attachment.GetArrayMetaData(Transaction: ITransaction; tableName,
357	columnName: AnsiString): IArrayMetaData;
358	begin
359	CheckHandle;
360	Result := TFB25ArrayMetaData.Create(self,Transaction as TFB25Transaction,tableName,columnName);
361	end;
362
363	procedure ISCVersionCallback(userArg: pointer; text: PAnsiChar); cdecl;
364	begin
365	TStrings(userArg).Add(text);
366	end;
367
368	procedure TFB25Attachment.getFBVersion(version: TStrings);
369	var callback: pointer;
370	begin
371	callback := @ISCVersionCallback;
372	version.Clear;
373	with FFirebird25ClientAPI do
374	if isc_version(@FHandle,TISC_CALLBACK(callback),PVoid(version)) > 0 then
375	IBDataBaseError;
376	end;
377
378	end.
379