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;
  FFirebird25ClientAPI.isc_version(@FHandle,TISC_CALLBACK(callback),PVoid(version));
end;

end.

Revision:	266
Committed:	Wed Dec 26 18:34:32 2018 UTC (5 years, 11 months ago) by tony
Content type:	text/x-pascal
File size:	13130 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): IStatement; override;
74	function GetEventHandler(Events: TStrings): IEvents; override;
75	function CreateBlob(transaction: ITransaction; RelationName, ColumnName: AnsiString; BPB: IBPB=nil): IBlob; overload;
76	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	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
81	function OpenArray(transaction: ITransaction; RelationName, ColumnName: AnsiString;
82	ArrayID: TISC_QUAD): IArray;
83	function CreateArray(transaction: ITransaction; RelationName, ColumnName: AnsiString
84	): IArray; overload;
85	function CreateArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData): IArray; overload;
86	function CreateArrayMetaData(SQLType: cardinal; tableName: AnsiString; columnName: AnsiString;
87	Scale: integer; size: cardinal;
88	acharSetID: cardinal; dimensions: cardinal; bounds: TArrayBounds
89	): IArrayMetaData;
90
91	{Database Information}
92
93	function GetBlobMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IBlobMetaData;
94	function GetArrayMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IArrayMetaData;
95	procedure getFBVersion(version: TStrings);
96	end;
97
98	implementation
99
100	uses FB25Events,FB25Transaction, FBMessages, FB25Blob,
101	FB25Statement, FB25Array, IBUtils, IBExternals;
102
103	{ TFB25Attachment }
104
105	procedure TFB25Attachment.CheckHandle;
106	begin
107	if FHandle = nil then
108	IBError(ibxeDatabaseClosed,[nil]);
109	end;
110
111	constructor TFB25Attachment.Create(api: TFB25ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
112	RaiseExceptionOnConnectError: boolean);
113	begin
114	FFirebird25ClientAPI := api;
115	if aDPB = nil then
116	begin
117	if RaiseExceptionOnConnectError then
118	IBError(ibxeNoDPB,[nil]);
119	Exit;
120	end;
121	inherited Create(api,DatabaseName,aDPB,RaiseExceptionOnConnectError);
122	Connect;
123	end;
124
125	constructor TFB25Attachment.CreateDatabase(api: TFB25ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
126	RaiseExceptionOnError: boolean);
127	var sql: AnsiString;
128	tr_handle: TISC_TR_HANDLE;
129	begin
130	inherited Create(api,DatabaseName,aDPB,RaiseExceptionOnError);
131	FFirebird25ClientAPI := api;
132	sql := GenerateCreateDatabaseSQL(DatabaseName,aDPB);
133	tr_handle := nil;
134	with FFirebird25ClientAPI do
135	if (isc_dsql_execute_immediate(StatusVector, @FHandle, @tr_handle, 0, PAnsiChar(sql),
136	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	end
144	else
145	GetODSAndConnectionInfo;
146	end;
147
148	constructor TFB25Attachment.CreateDatabase(api: TFB25ClientAPI; sql: AnsiString; aSQLDialect: integer;
149	RaiseExceptionOnError: boolean);
150	var tr_handle: TISC_TR_HANDLE;
151	begin
152	inherited Create(api,'',nil,RaiseExceptionOnError);
153	FFirebird25ClientAPI := api;
154	FSQLDialect := aSQLDialect;
155	tr_handle := nil;
156	with FFirebird25ClientAPI do
157	begin
158	if (isc_dsql_execute_immediate(StatusVector, @FHandle, @tr_handle, 0, PAnsiChar(sql),
159	aSQLDialect, nil) > 0) and RaiseExceptionOnError then
160	IBDataBaseError;
161
162	end;
163	GetODSAndConnectionInfo;
164	ExtractConnectString(sql,FDatabaseName);
165	DPBFromCreateSQL(sql);
166	end;
167
168	function TFB25Attachment.GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer
169	): IDBInformation;
170	begin
171	Result := TDBInformation.Create(FFirebird25ClientAPI);
172	with FFirebird25ClientAPI, Result as TDBInformation do
173	if isc_database_info(StatusVector, @(FHandle), ReqBufLen, ReqBuffer,
174	getBufSize, Buffer) > 0 then
175	IBDataBaseError;
176	end;
177
178	procedure TFB25Attachment.Connect;
179	begin
180	FSQLDialect := 3;
181
182	with FFirebird25ClientAPI do
183	if DPB = nil then
184	begin
185	if (isc_attach_database(StatusVector, Length(FDatabaseName),
186	PAnsiChar(FDatabaseName), @FHandle, 0, nil) > 0) and FRaiseExceptionOnConnectError then
187	IBDatabaseError;
188	end
189	else
190	begin
191	if (isc_attach_database(StatusVector, Length(FDatabaseName),
192	PAnsiChar(FDatabaseName), @FHandle,
193	(DPB as TDPB).getDataLength,
194	(DPB as TDPB).getBuffer) > 0 ) and FRaiseExceptionOnConnectError then
195	IBDatabaseError;
196
197	end;
198	GetODSAndConnectionInfo;
199	end;
200
201	procedure TFB25Attachment.Disconnect(Force: boolean);
202	begin
203	if FHandle = nil then
204	Exit;
205
206	EndAllTransactions;
207	{Disconnect}
208	with FFirebird25ClientAPI do
209	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	with FFirebird25ClientAPI do
227	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	Result := TFB25Transaction.Create(FFirebird25ClientAPI,self,TPB,DefaultCompletion);
237	end;
238
239	function TFB25Attachment.StartTransaction(TPB: ITPB;
240	DefaultCompletion: TTransactionCompletion): ITransaction;
241	begin
242	CheckHandle;
243	Result := TFB25Transaction.Create(FFirebird25ClientAPI,self,TPB,DefaultCompletion);
244	end;
245
246	function TFB25Attachment.CreateBlob(transaction: ITransaction; RelationName,
247	ColumnName: AnsiString; BPB: IBPB): IBlob;
248	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	ColumnName: AnsiString; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob;
270	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	procedure TFB25Attachment.ExecImmediate(transaction: ITransaction; sql: AnsiString;
285	aSQLDialect: integer);
286	var TRHandle: TISC_TR_HANDLE;
287	begin
288	CheckHandle;
289	TRHandle := (Transaction as TFB25Transaction).Handle;
290	with FFirebird25ClientAPI do
291	if isc_dsql_execute_immediate(StatusVector, @fHandle, @TRHandle, 0,PAnsiChar(sql), aSQLDialect, nil) > 0 then
292	IBDatabaseError;
293	SignalActivity;
294	end;
295
296	function TFB25Attachment.Prepare(transaction: ITransaction; sql: AnsiString;
297	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	sql: AnsiString; aSQLDialect: integer; GenerateParamNames: boolean): IStatement;
305	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	function TFB25Attachment.OpenArray(transaction: ITransaction; RelationName, ColumnName: AnsiString;
318	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	function TFB25Attachment.CreateArray(transaction: ITransaction; RelationName, ColumnName: AnsiString): IArray;
326	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	function TFB25Attachment.CreateArrayMetaData(SQLType: cardinal;
340	tableName: AnsiString; columnName: AnsiString; Scale: integer; size: cardinal;
341	acharSetID: cardinal; dimensions: cardinal; bounds: TArrayBounds
342	): IArrayMetaData;
343	begin
344	Result := TFB25ArrayMetaData.Create(self,SQLType,tableName,ColumnName,Scale,size,acharSetID,dimensions,bounds);
345	end;
346
347	function TFB25Attachment.GetBlobMetaData(Transaction: ITransaction; tableName,
348	columnName: AnsiString): IBlobMetaData;
349	begin
350	CheckHandle;
351	Result := TFB25BlobMetaData.Create(self,Transaction as TFB25Transaction,tableName,columnName);
352	end;
353
354	function TFB25Attachment.GetArrayMetaData(Transaction: ITransaction; tableName,
355	columnName: AnsiString): IArrayMetaData;
356	begin
357	CheckHandle;
358	Result := TFB25ArrayMetaData.Create(self,Transaction as TFB25Transaction,tableName,columnName);
359	end;
360
361	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	FFirebird25ClientAPI.isc_version(@FHandle,TISC_CALLBACK(callback),PVoid(version));
371	end;
372
373	end.
374