client/3.0/FB30Attachment.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 FB30Attachment;

{$IFDEF FPC}
{$mode objfpc}{$H+}
{$interfaces COM}
{$ENDIF}

interface

uses
  Classes, SysUtils, FBAttachment, FB30ClientAPI, Firebird, IB, FBActivityMonitor, FBParamBlock;

type

  { TFB30Attachment }

  TFB30Attachment = class(TFBAttachment,IAttachment, IActivityMonitor)
  private
    FAttachmentIntf: Firebird.IAttachment;
  protected
    procedure CheckHandle; override;
  public
    constructor Create(DatabaseName: string; aDPB: IDPB;
          RaiseExceptionOnConnectError: boolean);
    constructor CreateDatabase(DatabaseName: string; aDPB: IDPB; RaiseExceptionOnError: boolean);
    destructor Destroy; override;
    property AttachmentIntf: Firebird.IAttachment read FAttachmentIntf;

  public
    {IAttachment}
    procedure Connect;
    procedure Disconnect(Force: boolean=false); override;
    function IsConnected: boolean;
    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: string; aSQLDialect: integer); override;
    function Prepare(transaction: ITransaction; sql: string; aSQLDialect: integer): IStatement; override;
    function PrepareWithNamedParameters(transaction: ITransaction; sql: string;
                       aSQLDialect: integer; GenerateParamNames: boolean=false): IStatement; override;

    {Events}
    function GetEventHandler(Events: TStrings): IEvents; override;

    {Blob - may use to open existing Blobs. However, ISQLData.AsBlob is preferred}

    function CreateBlob(transaction: ITransaction; RelationName, ColumnName: string; 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: string; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload;
    function OpenBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; override; overload;

    {Array}
    function OpenArray(transaction: ITransaction; RelationName, ColumnName: string; ArrayID: TISC_QUAD): IArray;
    function CreateArray(transaction: ITransaction; RelationName, ColumnName: string): IArray; overload;
    function CreateArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData): IArray; overload;

    {Database Information}
    function GetBlobMetaData(Transaction: ITransaction; tableName, columnName: string): IBlobMetaData;
    function GetArrayMetaData(Transaction: ITransaction; tableName, columnName: string): IArrayMetaData;
    function GetDBInformation(Requests: array of byte): IDBInformation; overload;
    function GetDBInformation(Request: byte): IDBInformation; overload;
  end;

implementation

uses FB30Transaction, FB30Statement, FB30Array, FB30Blob, FBMessages,
  FBOutputBlock, FB30Events;

{ TFB30Attachment }

procedure TFB30Attachment.CheckHandle;
begin
  if FAttachmentIntf = nil then
    IBError(ibxeDatabaseClosed,[nil]);
end;

constructor TFB30Attachment.Create(DatabaseName: string; aDPB: IDPB;
  RaiseExceptionOnConnectError: boolean);
begin
  if aDPB = nil then
  begin
    if RaiseExceptionOnConnectError then
       IBError(ibxeNoDPB,[nil]);
    Exit;
  end;
  inherited Create(DatabaseName,aDPB,RaiseExceptionOnConnectError);
  Connect;
end;

constructor TFB30Attachment.CreateDatabase(DatabaseName: string; aDPB: IDPB;
  RaiseExceptionOnError: boolean);
var Param: IDPBItem;
    sql: string;
    IsCreateDB: boolean;
begin
  inherited Create(DatabaseName,aDPB,RaiseExceptionOnError);
  FSQLDialect := 3;
  IsCreateDB := true;
  if aDPB <> nil then
  begin
    Param := aDPB.Find(isc_dpb_set_db_SQL_dialect);
    if Param <> nil then
      FSQLDialect := Param.AsByte;
  end;
  sql := GenerateCreateDatabaseSQL(DatabaseName,aDPB);
  with Firebird30ClientAPI do
  begin
    FAttachmentIntf := UtilIntf.executeCreateDatabase(StatusIntf,Length(sql),
                                       PAnsiChar(sql),FSQLDialect,@IsCreateDB);
    if FRaiseExceptionOnConnectError then Check4DataBaseError;
    if InErrorState then
      FAttachmentIntf := nil
    else
    if aDPB <> nil then
    {Connect using known parameters}
    begin
      Disconnect;
      Connect;
    end;
  end;
end;

destructor TFB30Attachment.Destroy;
begin
  inherited Destroy;
  if assigned(FAttachmentIntf) then
    FAttachmentIntf.release;
end;

procedure TFB30Attachment.Connect;
var Param: IDPBItem;
begin
  with Firebird30ClientAPI do
  begin
    FAttachmentIntf := ProviderIntf.attachDatabase(StatusIntf,PAnsiChar(FDatabaseName),
                         (DPB as TDPB).getDataLength,
                         BytePtr((DPB as TDPB).getBuffer));
    if FRaiseExceptionOnConnectError then Check4DataBaseError;
    if InErrorState then
      FAttachmentIntf := nil
    else
    begin
      Param := DPB.Find(isc_dpb_set_db_SQL_dialect);
      if Param <> nil then
        FSQLDialect := Param.AsByte;
      Param :=  DPB.Find(isc_dpb_lc_ctype);
      FHasDefaultCharSet :=  (Param <> nil) and
                             CharSetName2CharSetID(Param.AsString,FCharSetID) and
                             CharSetID2CodePage(FCharSetID,FCodePage) and
                             (FCharSetID > 1);
    end;
  end;
end;

procedure TFB30Attachment.Disconnect(Force: boolean);
begin
  if IsConnected then
    with Firebird30ClientAPI do
    begin
      EndAllTransactions;
      FAttachmentIntf.Detach(StatusIntf);
      if not Force and InErrorState then
        IBDataBaseError;
      FAttachmentIntf := nil;
      FHasDefaultCharSet := false;
      FCodePage := CP_NONE;
      FCharSetID := 0;
    end;
end;

function TFB30Attachment.IsConnected: boolean;
begin
  Result := FAttachmentIntf <> nil;
end;

procedure TFB30Attachment.DropDatabase;
begin
  if IsConnected then
    with Firebird30ClientAPI do
    begin
      EndAllTransactions;
      FAttachmentIntf.dropDatabase(StatusIntf);
      Check4DataBaseError;
      FAttachmentIntf := nil;
    end;
end;

function TFB30Attachment.StartTransaction(TPB: array of byte;
  DefaultCompletion: TTransactionCompletion): ITransaction;
begin
  CheckHandle;
  Result := TFB30Transaction.Create(self,TPB,DefaultCompletion);
end;

function TFB30Attachment.StartTransaction(TPB: ITPB;
  DefaultCompletion: TTransactionCompletion): ITransaction;
begin
  CheckHandle;
  Result := TFB30Transaction.Create(self,TPB,DefaultCompletion);
end;

procedure TFB30Attachment.ExecImmediate(transaction: ITransaction; sql: string;
  aSQLDialect: integer);
begin
  CheckHandle;
  with Firebird30ClientAPI do
  begin
    FAttachmentIntf.execute(StatusIntf,(transaction as TFB30Transaction).TransactionIntf,
                    Length(sql),PChar(sql),aSQLDialect,nil,nil,nil,nil);
    Check4DataBaseError;
  end;
end;

function TFB30Attachment.Prepare(transaction: ITransaction; sql: string;
  aSQLDialect: integer): IStatement;
begin
  CheckHandle;
  Result := TFB30Statement.Create(self,transaction,sql,aSQLDialect);
end;

function TFB30Attachment.PrepareWithNamedParameters(transaction: ITransaction;
  sql: string; aSQLDialect: integer; GenerateParamNames: boolean): IStatement;
begin
  CheckHandle;
  Result := TFB30Statement.CreateWithParameterNames(self,transaction,sql,aSQLDialect,
         GenerateParamNames);
end;

function TFB30Attachment.GetEventHandler(Events: TStrings): IEvents;
begin
  CheckHandle;
  Result := TFB30Events.Create(self,Events);
end;

function TFB30Attachment.CreateBlob(transaction: ITransaction; RelationName,
  ColumnName: string; BPB: IBPB): IBlob;
begin
  CheckHandle;
  Result := TFB30Blob.Create(self,transaction as TFB30Transaction,
              TFB30BlobMetaData.Create(self,Transaction as TFB30Transaction,RelationName,ColumnName),BPB);
end;

function TFB30Attachment.CreateBlob(transaction: ITransaction;
  BlobMetaData: IBlobMetaData; BPB: IBPB): IBlob;
begin
  CheckHandle;
  Result := TFB30Blob.Create(self,transaction as TFB30Transaction, BlobMetaData,BPB);
end;

function TFB30Attachment.CreateBlob(transaction: ITransaction;
  SubType: integer; aCharSetID: cardinal; BPB: IBPB): IBlob;
begin
  CheckHandle;
  Result := TFB30Blob.Create(self,transaction as TFB30Transaction, SubType,aCharSetID,BPB);
end;

function TFB30Attachment.OpenBlob(transaction: ITransaction; RelationName,
  ColumnName: string; BlobID: TISC_QUAD; BPB: IBPB): IBlob;
begin
  CheckHandle;
  Result := TFB30Blob.Create(self,transaction as TFB30transaction,
                TFB30BlobMetaData.Create(self,Transaction as TFB30Transaction,RelationName,ColumnName),
                BlobID,BPB);
end;

function TFB30Attachment.OpenBlob(transaction: ITransaction;
  BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB): IBlob;
begin
  CheckHandle;
  Result :=  TFB30Blob.Create(self,transaction as TFB30transaction,BlobMetaData,BlobID,BPB);
end;

function TFB30Attachment.OpenArray(transaction: ITransaction; RelationName,
  ColumnName: string; ArrayID: TISC_QUAD): IArray;
begin
  CheckHandle;
  Result := TFB30Array.Create(self,transaction as TFB30Transaction,
                    GetArrayMetaData(transaction,RelationName,ColumnName),ArrayID);
end;

function TFB30Attachment.CreateArray(transaction: ITransaction; RelationName,
  ColumnName: string): IArray;
begin
  CheckHandle;
  Result := TFB30Array.Create(self,transaction as TFB30Transaction,
                    GetArrayMetaData(transaction,RelationName,ColumnName));
end;

function TFB30Attachment.CreateArray(transaction: ITransaction;
  ArrayMetaData: IArrayMetaData): IArray;
begin
  CheckHandle;
  Result := TFB30Array.Create(self,transaction as TFB30Transaction,ArrayMetaData);
end;

function TFB30Attachment.GetBlobMetaData(Transaction: ITransaction; tableName,
  columnName: string): IBlobMetaData;
begin
  CheckHandle;
  Result := TFB30BlobMetaData.Create(self,Transaction as TFB30Transaction,tableName,columnName);
end;

function TFB30Attachment.GetArrayMetaData(Transaction: ITransaction; tableName,
  columnName: string): IArrayMetaData;
begin
  CheckHandle;
  Result := TFB30ArrayMetaData.Create(self,Transaction as TFB30Transaction,tableName,columnName);
end;

function TFB30Attachment.GetDBInformation(Requests: array of byte
  ): IDBInformation;
var ReqBuffer: PByte;
    i: integer;
begin
  CheckHandle;
  if Length(Requests) = 1 then
    Result := GetDBInformation(Requests[0])
  else
  begin
    Result := TDBInformation.Create;
    GetMem(ReqBuffer,Length(Requests));
    try
      for i := 0 to Length(Requests) - 1 do
        ReqBuffer[i] := Requests[i];

      with Firebird30ClientAPI, Result as TDBInformation do
      begin
        FAttachmentIntf.getInfo(StatusIntf, Length(Requests), BytePtr(ReqBuffer),
                                 getBufSize, BytePtr(Buffer));
          Check4DataBaseError;
      end

    finally
      FreeMem(ReqBuffer);
    end;
  end;
end;

function TFB30Attachment.GetDBInformation(Request: byte): IDBInformation;
begin
  CheckHandle;
  Result := TDBInformation.Create;
  with Firebird30ClientAPI, Result as TDBInformation do
  begin
    FAttachmentIntf.getInfo(StatusIntf, 1, BytePtr(@Request),
                           getBufSize, BytePtr(Buffer));
      Check4DataBaseError;
  end;
end;

end.

Revision:	45
Committed:	Tue Dec 6 10:33:46 2016 UTC (7 years, 4 months ago) by tony
Content type:	text/x-pascal
Original Path:	*ibx/trunk/fbintf/client/3.0/FB30Attachment.pas*
File size:	12430 byte(s)
Log Message:	Committing updates for Release R2-0-0
#	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 FB30Attachment;
28
29			{$IFDEF FPC}
30			{$mode objfpc}{$H+}
31			{$interfaces COM}
32			{$ENDIF}
33
34			interface
35
36			uses
37			Classes, SysUtils, FBAttachment, FB30ClientAPI, Firebird, IB, FBActivityMonitor, FBParamBlock;
38
39			type
40
41			{ TFB30Attachment }
42
43			TFB30Attachment = class(TFBAttachment,IAttachment, IActivityMonitor)
44			private
45			FAttachmentIntf: Firebird.IAttachment;
46			protected
47			procedure CheckHandle; override;
48			public
49			constructor Create(DatabaseName: string; aDPB: IDPB;
50			RaiseExceptionOnConnectError: boolean);
51			constructor CreateDatabase(DatabaseName: string; aDPB: IDPB; RaiseExceptionOnError: boolean);
52			destructor Destroy; override;
53			property AttachmentIntf: Firebird.IAttachment read FAttachmentIntf;
54
55			public
56			{IAttachment}
57			procedure Connect;
58			procedure Disconnect(Force: boolean=false); override;
59			function IsConnected: boolean;
60			procedure DropDatabase;
61			function StartTransaction(TPB: array of byte; DefaultCompletion: TTransactionCompletion): ITransaction; override;
62			function StartTransaction(TPB: ITPB; DefaultCompletion: TTransactionCompletion): ITransaction; override;
63			procedure ExecImmediate(transaction: ITransaction; sql: string; aSQLDialect: integer); override;
64			function Prepare(transaction: ITransaction; sql: string; aSQLDialect: integer): IStatement; override;
65			function PrepareWithNamedParameters(transaction: ITransaction; sql: string;
66			aSQLDialect: integer; GenerateParamNames: boolean=false): IStatement; override;
67
68			{Events}
69			function GetEventHandler(Events: TStrings): IEvents; override;
70
71			{Blob - may use to open existing Blobs. However, ISQLData.AsBlob is preferred}
72
73			function CreateBlob(transaction: ITransaction; RelationName, ColumnName: string; BPB: IBPB=nil): IBlob; overload;
74			function CreateBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BPB: IBPB=nil): IBlob; overload;
75			function CreateBlob(transaction: ITransaction; SubType: integer; aCharSetID: cardinal=0; BPB: IBPB=nil): IBlob; overload;
76			function OpenBlob(transaction: ITransaction; RelationName, ColumnName: string; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload;
77			function OpenBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; override; overload;
78
79			{Array}
80			function OpenArray(transaction: ITransaction; RelationName, ColumnName: string; ArrayID: TISC_QUAD): IArray;
81			function CreateArray(transaction: ITransaction; RelationName, ColumnName: string): IArray; overload;
82			function CreateArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData): IArray; overload;
83
84			{Database Information}
85			function GetBlobMetaData(Transaction: ITransaction; tableName, columnName: string): IBlobMetaData;
86			function GetArrayMetaData(Transaction: ITransaction; tableName, columnName: string): IArrayMetaData;
87			function GetDBInformation(Requests: array of byte): IDBInformation; overload;
88			function GetDBInformation(Request: byte): IDBInformation; overload;
89			end;
90
91			implementation
92
93			uses FB30Transaction, FB30Statement, FB30Array, FB30Blob, FBMessages,
94			FBOutputBlock, FB30Events;
95
96			{ TFB30Attachment }
97
98			procedure TFB30Attachment.CheckHandle;
99			begin
100			if FAttachmentIntf = nil then
101			IBError(ibxeDatabaseClosed,[nil]);
102			end;
103
104			constructor TFB30Attachment.Create(DatabaseName: string; aDPB: IDPB;
105			RaiseExceptionOnConnectError: boolean);
106			begin
107			if aDPB = nil then
108			begin
109			if RaiseExceptionOnConnectError then
110			IBError(ibxeNoDPB,[nil]);
111			Exit;
112			end;
113			inherited Create(DatabaseName,aDPB,RaiseExceptionOnConnectError);
114			Connect;
115			end;
116
117			constructor TFB30Attachment.CreateDatabase(DatabaseName: string; aDPB: IDPB;
118			RaiseExceptionOnError: boolean);
119			var Param: IDPBItem;
120			sql: string;
121			IsCreateDB: boolean;
122			begin
123			inherited Create(DatabaseName,aDPB,RaiseExceptionOnError);
124			FSQLDialect := 3;
125			IsCreateDB := true;
126			if aDPB <> nil then
127			begin
128			Param := aDPB.Find(isc_dpb_set_db_SQL_dialect);
129			if Param <> nil then
130			FSQLDialect := Param.AsByte;
131			end;
132			sql := GenerateCreateDatabaseSQL(DatabaseName,aDPB);
133			with Firebird30ClientAPI do
134			begin
135			FAttachmentIntf := UtilIntf.executeCreateDatabase(StatusIntf,Length(sql),
136			PAnsiChar(sql),FSQLDialect,@IsCreateDB);
137			if FRaiseExceptionOnConnectError then Check4DataBaseError;
138			if InErrorState then
139			FAttachmentIntf := nil
140			else
141			if aDPB <> nil then
142			{Connect using known parameters}
143			begin
144			Disconnect;
145			Connect;
146			end;
147			end;
148			end;
149
150			destructor TFB30Attachment.Destroy;
151			begin
152			inherited Destroy;
153			if assigned(FAttachmentIntf) then
154			FAttachmentIntf.release;
155			end;
156
157			procedure TFB30Attachment.Connect;
158			var Param: IDPBItem;
159			begin
160			with Firebird30ClientAPI do
161			begin
162			FAttachmentIntf := ProviderIntf.attachDatabase(StatusIntf,PAnsiChar(FDatabaseName),
163			(DPB as TDPB).getDataLength,
164			BytePtr((DPB as TDPB).getBuffer));
165			if FRaiseExceptionOnConnectError then Check4DataBaseError;
166			if InErrorState then
167			FAttachmentIntf := nil
168			else
169			begin
170			Param := DPB.Find(isc_dpb_set_db_SQL_dialect);
171			if Param <> nil then
172			FSQLDialect := Param.AsByte;
173			Param := DPB.Find(isc_dpb_lc_ctype);
174			FHasDefaultCharSet := (Param <> nil) and
175			CharSetName2CharSetID(Param.AsString,FCharSetID) and
176			CharSetID2CodePage(FCharSetID,FCodePage) and
177			(FCharSetID > 1);
178			end;
179			end;
180			end;
181
182			procedure TFB30Attachment.Disconnect(Force: boolean);
183			begin
184			if IsConnected then
185			with Firebird30ClientAPI do
186			begin
187			EndAllTransactions;
188			FAttachmentIntf.Detach(StatusIntf);
189			if not Force and InErrorState then
190			IBDataBaseError;
191			FAttachmentIntf := nil;
192			FHasDefaultCharSet := false;
193			FCodePage := CP_NONE;
194			FCharSetID := 0;
195			end;
196			end;
197
198			function TFB30Attachment.IsConnected: boolean;
199			begin
200			Result := FAttachmentIntf <> nil;
201			end;
202
203			procedure TFB30Attachment.DropDatabase;
204			begin
205			if IsConnected then
206			with Firebird30ClientAPI do
207			begin
208			EndAllTransactions;
209			FAttachmentIntf.dropDatabase(StatusIntf);
210			Check4DataBaseError;
211			FAttachmentIntf := nil;
212			end;
213			end;
214
215			function TFB30Attachment.StartTransaction(TPB: array of byte;
216			DefaultCompletion: TTransactionCompletion): ITransaction;
217			begin
218			CheckHandle;
219			Result := TFB30Transaction.Create(self,TPB,DefaultCompletion);
220			end;
221
222			function TFB30Attachment.StartTransaction(TPB: ITPB;
223			DefaultCompletion: TTransactionCompletion): ITransaction;
224			begin
225			CheckHandle;
226			Result := TFB30Transaction.Create(self,TPB,DefaultCompletion);
227			end;
228
229			procedure TFB30Attachment.ExecImmediate(transaction: ITransaction; sql: string;
230			aSQLDialect: integer);
231			begin
232			CheckHandle;
233			with Firebird30ClientAPI do
234			begin
235			FAttachmentIntf.execute(StatusIntf,(transaction as TFB30Transaction).TransactionIntf,
236			Length(sql),PChar(sql),aSQLDialect,nil,nil,nil,nil);
237			Check4DataBaseError;
238			end;
239			end;
240
241			function TFB30Attachment.Prepare(transaction: ITransaction; sql: string;
242			aSQLDialect: integer): IStatement;
243			begin
244			CheckHandle;
245			Result := TFB30Statement.Create(self,transaction,sql,aSQLDialect);
246			end;
247
248			function TFB30Attachment.PrepareWithNamedParameters(transaction: ITransaction;
249			sql: string; aSQLDialect: integer; GenerateParamNames: boolean): IStatement;
250			begin
251			CheckHandle;
252			Result := TFB30Statement.CreateWithParameterNames(self,transaction,sql,aSQLDialect,
253			GenerateParamNames);
254			end;
255
256			function TFB30Attachment.GetEventHandler(Events: TStrings): IEvents;
257			begin
258			CheckHandle;
259			Result := TFB30Events.Create(self,Events);
260			end;
261
262			function TFB30Attachment.CreateBlob(transaction: ITransaction; RelationName,
263			ColumnName: string; BPB: IBPB): IBlob;
264			begin
265			CheckHandle;
266			Result := TFB30Blob.Create(self,transaction as TFB30Transaction,
267			TFB30BlobMetaData.Create(self,Transaction as TFB30Transaction,RelationName,ColumnName),BPB);
268			end;
269
270			function TFB30Attachment.CreateBlob(transaction: ITransaction;
271			BlobMetaData: IBlobMetaData; BPB: IBPB): IBlob;
272			begin
273			CheckHandle;
274			Result := TFB30Blob.Create(self,transaction as TFB30Transaction, BlobMetaData,BPB);
275			end;
276
277			function TFB30Attachment.CreateBlob(transaction: ITransaction;
278			SubType: integer; aCharSetID: cardinal; BPB: IBPB): IBlob;
279			begin
280			CheckHandle;
281			Result := TFB30Blob.Create(self,transaction as TFB30Transaction, SubType,aCharSetID,BPB);
282			end;
283
284			function TFB30Attachment.OpenBlob(transaction: ITransaction; RelationName,
285			ColumnName: string; BlobID: TISC_QUAD; BPB: IBPB): IBlob;
286			begin
287			CheckHandle;
288			Result := TFB30Blob.Create(self,transaction as TFB30transaction,
289			TFB30BlobMetaData.Create(self,Transaction as TFB30Transaction,RelationName,ColumnName),
290			BlobID,BPB);
291			end;
292
293			function TFB30Attachment.OpenBlob(transaction: ITransaction;
294			BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB): IBlob;
295			begin
296			CheckHandle;
297			Result := TFB30Blob.Create(self,transaction as TFB30transaction,BlobMetaData,BlobID,BPB);
298			end;
299
300			function TFB30Attachment.OpenArray(transaction: ITransaction; RelationName,
301			ColumnName: string; ArrayID: TISC_QUAD): IArray;
302			begin
303			CheckHandle;
304			Result := TFB30Array.Create(self,transaction as TFB30Transaction,
305			GetArrayMetaData(transaction,RelationName,ColumnName),ArrayID);
306			end;
307
308			function TFB30Attachment.CreateArray(transaction: ITransaction; RelationName,
309			ColumnName: string): IArray;
310			begin
311			CheckHandle;
312			Result := TFB30Array.Create(self,transaction as TFB30Transaction,
313			GetArrayMetaData(transaction,RelationName,ColumnName));
314			end;
315
316			function TFB30Attachment.CreateArray(transaction: ITransaction;
317			ArrayMetaData: IArrayMetaData): IArray;
318			begin
319			CheckHandle;
320			Result := TFB30Array.Create(self,transaction as TFB30Transaction,ArrayMetaData);
321			end;
322
323			function TFB30Attachment.GetBlobMetaData(Transaction: ITransaction; tableName,
324			columnName: string): IBlobMetaData;
325			begin
326			CheckHandle;
327			Result := TFB30BlobMetaData.Create(self,Transaction as TFB30Transaction,tableName,columnName);
328			end;
329
330			function TFB30Attachment.GetArrayMetaData(Transaction: ITransaction; tableName,
331			columnName: string): IArrayMetaData;
332			begin
333			CheckHandle;
334			Result := TFB30ArrayMetaData.Create(self,Transaction as TFB30Transaction,tableName,columnName);
335			end;
336
337			function TFB30Attachment.GetDBInformation(Requests: array of byte
338			): IDBInformation;
339			var ReqBuffer: PByte;
340			i: integer;
341			begin
342			CheckHandle;
343			if Length(Requests) = 1 then
344			Result := GetDBInformation(Requests[0])
345			else
346			begin
347			Result := TDBInformation.Create;
348			GetMem(ReqBuffer,Length(Requests));
349			try
350			for i := 0 to Length(Requests) - 1 do
351			ReqBuffer[i] := Requests[i];
352
353			with Firebird30ClientAPI, Result as TDBInformation do
354			begin
355			FAttachmentIntf.getInfo(StatusIntf, Length(Requests), BytePtr(ReqBuffer),
356			getBufSize, BytePtr(Buffer));
357			Check4DataBaseError;
358			end
359
360			finally
361			FreeMem(ReqBuffer);
362			end;
363			end;
364			end;
365
366			function TFB30Attachment.GetDBInformation(Request: byte): IDBInformation;
367			begin
368			CheckHandle;
369			Result := TDBInformation.Create;
370			with Firebird30ClientAPI, Result as TDBInformation do
371			begin
372			FAttachmentIntf.getInfo(StatusIntf, 1, BytePtr(@Request),
373			getBufSize, BytePtr(Buffer));
374			Check4DataBaseError;
375			end;
376			end;
377
378			end.
379