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;
{$IFDEF MSWINDOWS} 
{$DEFINE WINDOWS} 
{$ENDIF}

{$IFDEF FPC}
{$mode delphi}
{$interfaces COM}
{$ENDIF}

interface

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

type

  { TFB30Attachment }

  TFB30Attachment = class(TFBAttachment,IAttachment, IActivityMonitor)
  private
    FAttachmentIntf: Firebird.IAttachment;
    FFirebird30ClientAPI: TFB30ClientAPI;
    FTimeZoneServices: ITimeZoneServices;
    FUsingRemoteICU: boolean;
    procedure SetUseRemoteICU(aValue: boolean);
  protected
    procedure CheckHandle; override;
  public
    constructor Create(api: TFB30ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
          RaiseExceptionOnConnectError: boolean);
    constructor CreateDatabase(api: TFB30ClientAPI; DatabaseName: AnsiString; aDPB: IDPB; RaiseExceptionOnError: boolean);  overload;
    constructor CreateDatabase(api: TFB30ClientAPI; sql: AnsiString; aSQLDialect: integer;
      RaiseExceptionOnError: boolean); overload;
    destructor Destroy; override;
    function GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer): IDBInformation;
      override;
    property AttachmentIntf: Firebird.IAttachment read FAttachmentIntf;
    property Firebird30ClientAPI: TFB30ClientAPI read FFirebird30ClientAPI;

  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;

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

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

    function CreateBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BPB: IBPB=nil): IBlob; overload; override;
    function CreateBlob(transaction: ITransaction; SubType: integer; aCharSetID: cardinal=0; BPB: IBPB=nil): IBlob; overload;
    function OpenBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob;  overload; override;

    {Array}
    function OpenArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData; ArrayID: TISC_QUAD): IArray; overload; override;
    function CreateArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData): IArray; overload; override;
    function CreateArrayMetaData(SQLType: cardinal; tableName: AnsiString;
      columnName: AnsiString; Scale: integer; size: cardinal; aCharSetID: cardinal;
      dimensions: cardinal; bounds: TArrayBounds): IArrayMetaData;


    {Database Information}
    function GetBlobMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IBlobMetaData; override;
    function GetArrayMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IArrayMetaData; override;
    procedure getFBVersion(version: TStrings);
    function HasDecFloatSupport: boolean; override;

    {Time Zone Support}
    function GetTimeZoneServices: ITimeZoneServices; override;
    function HasTimeZoneSupport: boolean; override;
  end;

implementation

uses FB30Transaction, FB30Statement, FB30Array, FB30Blob, FBMessages,
  FBOutputBlock, FB30Events, IBUtils, FB30TimeZoneServices;

type
  { TVersionCallback }

  TVersionCallback = class(Firebird.IVersionCallbackImpl)
  private
    FOutput: TStrings;
    FFirebirdClientAPI: TFBClientAPI;
  public
    constructor Create(FirebirdClientAPI: TFBClientAPI; output: TStrings);
    procedure callback(status: Firebird.IStatus; text: PAnsiChar); override;
  end;

{ TVersionCallback }

constructor TVersionCallback.Create(FirebirdClientAPI: TFBClientAPI;
  output: TStrings);
begin
  inherited Create;
  FFirebirdClientAPI := FirebirdClientAPI;
  FOutput := output;
end;

procedure TVersionCallback.callback(status: Firebird.IStatus; text: PAnsiChar);
var StatusObj: TFB30StatusObject;
begin
  if ((status.getState and status.STATE_ERRORS) <> 0) then
  begin
    StatusObj := TFB30StatusObject.Create(FFirebirdClientAPI,status);
    try
      raise EIBInterBaseError.Create(StatusObj);
    finally
      StatusObj.Free;
    end;
  end;
  FOutput.Add(text);
end;


{ TFB30Attachment }

procedure TFB30Attachment.SetUseRemoteICU(aValue: boolean);
begin
  if (FUsingRemoteICU <> aValue) and (GetODSMajorVersion >= 13) then
  begin
    if aValue then
      ExecImmediate([isc_tpb_write,isc_tpb_wait,isc_tpb_concurrency],'SET BIND OF TIME ZONE TO EXTENDED')
    else
      ExecImmediate([isc_tpb_write,isc_tpb_wait,isc_tpb_concurrency],'SET BIND OF TIME ZONE TO NATIVE');
    FUsingRemoteICU := aValue;
  end;
end;

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

constructor TFB30Attachment.Create(api: TFB30ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
  RaiseExceptionOnConnectError: boolean);
begin
  FFirebird30ClientAPI := api;
  if aDPB = nil then
  begin
    if RaiseExceptionOnConnectError then
       IBError(ibxeNoDPB,[nil]);
    Exit;
  end;
  inherited Create(api,DatabaseName,aDPB,RaiseExceptionOnConnectError);
  Connect;
end;

constructor TFB30Attachment.CreateDatabase(api: TFB30ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
  RaiseExceptionOnError: boolean);
var Param: IDPBItem;
    sql: AnsiString;
    IsCreateDB: boolean;
begin
  inherited Create(api,DatabaseName,aDPB,RaiseExceptionOnError);
  FFirebird30ClientAPI := api;
  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 FFirebird30ClientAPI 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
    else
      GetODSAndConnectionInfo;
  end;
end;

constructor TFB30Attachment.CreateDatabase(api: TFB30ClientAPI; sql: AnsiString; aSQLDialect: integer;
  RaiseExceptionOnError: boolean);
var IsCreateDB: boolean;
begin
  inherited Create(api,'',nil,RaiseExceptionOnError);
  FFirebird30ClientAPI := api;
  FSQLDialect := aSQLDialect;
  with FFirebird30ClientAPI do
  begin
    FAttachmentIntf := UtilIntf.executeCreateDatabase(StatusIntf,Length(sql),
                                       PAnsiChar(sql),aSQLDialect,@IsCreateDB);
    if FRaiseExceptionOnConnectError then Check4DataBaseError;
    if InErrorState then
      FAttachmentIntf := nil;
  end;
  GetODSAndConnectionInfo;
  ExtractConnectString(sql,FDatabaseName);
  DPBFromCreateSQL(sql);
end;

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

function TFB30Attachment.GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer): IDBInformation;
begin
  Result := TDBInformation.Create(Firebird30ClientAPI);
  with FFirebird30ClientAPI, Result as TDBInformation do
  begin
    FAttachmentIntf.getInfo(StatusIntf, ReqBufLen, BytePtr(ReqBuffer),
                               getBufSize, BytePtr(Buffer));
      Check4DataBaseError;
  end
end;

procedure TFB30Attachment.Connect;
begin
  with FFirebird30ClientAPI 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
      GetODSAndConnectionInfo;

  end;
end;

procedure TFB30Attachment.Disconnect(Force: boolean);
begin
  if IsConnected then
    with FFirebird30ClientAPI do
    begin
      EndAllTransactions;
      FAttachmentIntf.Detach(StatusIntf);
      if not Force and InErrorState then
        IBDataBaseError;
      FAttachmentIntf := nil;
      FHasDefaultCharSet := false;
      FCodePage := CP_NONE;
      FCharSetID := 0;
      FTimeZoneServices := nil;
    end;
end;

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

procedure TFB30Attachment.DropDatabase;
begin
  if IsConnected then
    with FFirebird30ClientAPI 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(FFirebird30ClientAPI,self,TPB,DefaultCompletion);
end;

function TFB30Attachment.StartTransaction(TPB: ITPB;
  DefaultCompletion: TTransactionCompletion): ITransaction;
begin
  CheckHandle;
  Result := TFB30Transaction.Create(FFirebird30ClientAPI,self,TPB,DefaultCompletion);
end;

procedure TFB30Attachment.ExecImmediate(transaction: ITransaction; sql: AnsiString;
  aSQLDialect: integer);
begin
  CheckHandle;
  with FFirebird30ClientAPI do
  begin
    FAttachmentIntf.execute(StatusIntf,(transaction as TFB30Transaction).TransactionIntf,
                    Length(sql),PAnsiChar(sql),aSQLDialect,nil,nil,nil,nil);
    Check4DataBaseError;
  end;
end;

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

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

function TFB30Attachment.GetEventHandler(Events: TStrings): IEvents;
begin
  CheckHandle;
  Result := TFB30Events.Create(self,Events);
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;
  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;
  ArrayMetaData: IArrayMetaData; ArrayID: TISC_QUAD): IArray;
begin
  CheckHandle;
  Result := TFB30Array.Create(self,transaction as TFB30Transaction,
                    ArrayMetaData,ArrayID);
end;

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

function TFB30Attachment.CreateArrayMetaData(SQLType: cardinal; tableName: AnsiString; columnName: AnsiString;
  Scale: integer; size: cardinal; aCharSetID: cardinal; dimensions: cardinal;
  bounds: TArrayBounds): IArrayMetaData;
begin
  Result := TFB30ArrayMetaData.Create(self,SQLType,tableName,ColumnName,Scale,size,aCharSetID, dimensions,bounds);
end;

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

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

procedure TFB30Attachment.getFBVersion(version: TStrings);
var bufferObj: TVersionCallback;
begin
  version.Clear;
  bufferObj := TVersionCallback.Create(Firebird30ClientAPI,version);
  try
    with FFirebird30ClientAPI do
    begin
       UtilIntf.getFbVersion(StatusIntf,FAttachmentIntf,bufferObj);
       Check4DataBaseError;
    end;
  finally
    bufferObj.Free;
  end;
end;

function TFB30Attachment.HasDecFloatSupport: boolean;
begin
  Result := (FFirebird30ClientAPI.GetClientMajor >= 4) and
   (GetODSMajorVersion >= 13);
end;

function TFB30Attachment.GetTimeZoneServices: ITimeZoneServices;
begin
  if not HasTimeZoneSupport then
    IBError(ibxeNotSupported,[]);

  if FTimeZoneServices = nil then
    FTimeZoneServices := TFB30TimeZoneServices.Create(self);
  Result := FTimeZoneServices;
end;

function TFB30Attachment.HasTimeZoneSupport: boolean;
begin
  Result := (FFirebird30ClientAPI.GetClientMajor >= 4) and
   (GetODSMajorVersion >= 13);
end;

end.

Revision:	315
Committed:	Thu Feb 25 11:56:36 2021 UTC (3 years, 1 month ago) by tony
Content type:	text/x-pascal
Original Path:	*ibx/trunk/fbintf/client/3.0/FB30Attachment.pas*
File size:	14721 byte(s)
Log Message:	Updated for IBX 4 release
#	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 FB30Attachment;
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, FBAttachment, FBClientAPI, FB30ClientAPI, Firebird, IB,
41	FBActivityMonitor, FBParamBlock;
42
43	type
44
45	{ TFB30Attachment }
46
47	TFB30Attachment = class(TFBAttachment,IAttachment, IActivityMonitor)
48	private
49	FAttachmentIntf: Firebird.IAttachment;
50	FFirebird30ClientAPI: TFB30ClientAPI;
51	FTimeZoneServices: ITimeZoneServices;
52	FUsingRemoteICU: boolean;
53	procedure SetUseRemoteICU(aValue: boolean);
54	protected
55	procedure CheckHandle; override;
56	public
57	constructor Create(api: TFB30ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
58	RaiseExceptionOnConnectError: boolean);
59	constructor CreateDatabase(api: TFB30ClientAPI; DatabaseName: AnsiString; aDPB: IDPB; RaiseExceptionOnError: boolean); overload;
60	constructor CreateDatabase(api: TFB30ClientAPI; sql: AnsiString; aSQLDialect: integer;
61	RaiseExceptionOnError: boolean); overload;
62	destructor Destroy; override;
63	function GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer): IDBInformation;
64	override;
65	property AttachmentIntf: Firebird.IAttachment read FAttachmentIntf;
66	property Firebird30ClientAPI: TFB30ClientAPI read FFirebird30ClientAPI;
67
68	public
69	{IAttachment}
70	procedure Connect;
71	procedure Disconnect(Force: boolean=false); override;
72	function IsConnected: boolean; override;
73	procedure DropDatabase;
74	function StartTransaction(TPB: array of byte; DefaultCompletion: TTransactionCompletion): ITransaction; override;
75	function StartTransaction(TPB: ITPB; DefaultCompletion: TTransactionCompletion): ITransaction; override;
76	procedure ExecImmediate(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer); override;
77	function Prepare(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer): IStatement; override;
78	function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
79	aSQLDialect: integer; GenerateParamNames: boolean=false;
80	CaseSensitiveParams: boolean=false): IStatement; override;
81
82	{Events}
83	function GetEventHandler(Events: TStrings): IEvents; override;
84
85	{Blob - may use to open existing Blobs. However, ISQLData.AsBlob is preferred}
86
87	function CreateBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BPB: IBPB=nil): IBlob; overload; override;
88	function CreateBlob(transaction: ITransaction; SubType: integer; aCharSetID: cardinal=0; BPB: IBPB=nil): IBlob; overload;
89	function OpenBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload; override;
90
91	{Array}
92	function OpenArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData; ArrayID: TISC_QUAD): IArray; overload; override;
93	function CreateArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData): IArray; overload; override;
94	function CreateArrayMetaData(SQLType: cardinal; tableName: AnsiString;
95	columnName: AnsiString; Scale: integer; size: cardinal; aCharSetID: cardinal;
96	dimensions: cardinal; bounds: TArrayBounds): IArrayMetaData;
97
98
99	{Database Information}
100	function GetBlobMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IBlobMetaData; override;
101	function GetArrayMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IArrayMetaData; override;
102	procedure getFBVersion(version: TStrings);
103	function HasDecFloatSupport: boolean; override;
104
105	{Time Zone Support}
106	function GetTimeZoneServices: ITimeZoneServices; override;
107	function HasTimeZoneSupport: boolean; override;
108	end;
109
110	implementation
111
112	uses FB30Transaction, FB30Statement, FB30Array, FB30Blob, FBMessages,
113	FBOutputBlock, FB30Events, IBUtils, FB30TimeZoneServices;
114
115	type
116	{ TVersionCallback }
117
118	TVersionCallback = class(Firebird.IVersionCallbackImpl)
119	private
120	FOutput: TStrings;
121	FFirebirdClientAPI: TFBClientAPI;
122	public
123	constructor Create(FirebirdClientAPI: TFBClientAPI; output: TStrings);
124	procedure callback(status: Firebird.IStatus; text: PAnsiChar); override;
125	end;
126
127	{ TVersionCallback }
128
129	constructor TVersionCallback.Create(FirebirdClientAPI: TFBClientAPI;
130	output: TStrings);
131	begin
132	inherited Create;
133	FFirebirdClientAPI := FirebirdClientAPI;
134	FOutput := output;
135	end;
136
137	procedure TVersionCallback.callback(status: Firebird.IStatus; text: PAnsiChar);
138	var StatusObj: TFB30StatusObject;
139	begin
140	if ((status.getState and status.STATE_ERRORS) <> 0) then
141	begin
142	StatusObj := TFB30StatusObject.Create(FFirebirdClientAPI,status);
143	try
144	raise EIBInterBaseError.Create(StatusObj);
145	finally
146	StatusObj.Free;
147	end;
148	end;
149	FOutput.Add(text);
150	end;
151
152
153	{ TFB30Attachment }
154
155	procedure TFB30Attachment.SetUseRemoteICU(aValue: boolean);
156	begin
157	if (FUsingRemoteICU <> aValue) and (GetODSMajorVersion >= 13) then
158	begin
159	if aValue then
160	ExecImmediate([isc_tpb_write,isc_tpb_wait,isc_tpb_concurrency],'SET BIND OF TIME ZONE TO EXTENDED')
161	else
162	ExecImmediate([isc_tpb_write,isc_tpb_wait,isc_tpb_concurrency],'SET BIND OF TIME ZONE TO NATIVE');
163	FUsingRemoteICU := aValue;
164	end;
165	end;
166
167	procedure TFB30Attachment.CheckHandle;
168	begin
169	if FAttachmentIntf = nil then
170	IBError(ibxeDatabaseClosed,[nil]);
171	end;
172
173	constructor TFB30Attachment.Create(api: TFB30ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
174	RaiseExceptionOnConnectError: boolean);
175	begin
176	FFirebird30ClientAPI := api;
177	if aDPB = nil then
178	begin
179	if RaiseExceptionOnConnectError then
180	IBError(ibxeNoDPB,[nil]);
181	Exit;
182	end;
183	inherited Create(api,DatabaseName,aDPB,RaiseExceptionOnConnectError);
184	Connect;
185	end;
186
187	constructor TFB30Attachment.CreateDatabase(api: TFB30ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
188	RaiseExceptionOnError: boolean);
189	var Param: IDPBItem;
190	sql: AnsiString;
191	IsCreateDB: boolean;
192	begin
193	inherited Create(api,DatabaseName,aDPB,RaiseExceptionOnError);
194	FFirebird30ClientAPI := api;
195	IsCreateDB := true;
196	if aDPB <> nil then
197	begin
198	Param := aDPB.Find(isc_dpb_set_db_SQL_dialect);
199	if Param <> nil then
200	FSQLDialect := Param.AsByte;
201	end;
202	sql := GenerateCreateDatabaseSQL(DatabaseName,aDPB);
203	with FFirebird30ClientAPI do
204	begin
205	FAttachmentIntf := UtilIntf.executeCreateDatabase(StatusIntf,Length(sql),
206	PAnsiChar(sql),FSQLDialect,@IsCreateDB);
207	if FRaiseExceptionOnConnectError then Check4DataBaseError;
208	if InErrorState then
209	FAttachmentIntf := nil
210	else
211	if aDPB <> nil then
212	{Connect using known parameters}
213	begin
214	Disconnect;
215	Connect;
216	end
217	else
218	GetODSAndConnectionInfo;
219	end;
220	end;
221
222	constructor TFB30Attachment.CreateDatabase(api: TFB30ClientAPI; sql: AnsiString; aSQLDialect: integer;
223	RaiseExceptionOnError: boolean);
224	var IsCreateDB: boolean;
225	begin
226	inherited Create(api,'',nil,RaiseExceptionOnError);
227	FFirebird30ClientAPI := api;
228	FSQLDialect := aSQLDialect;
229	with FFirebird30ClientAPI do
230	begin
231	FAttachmentIntf := UtilIntf.executeCreateDatabase(StatusIntf,Length(sql),
232	PAnsiChar(sql),aSQLDialect,@IsCreateDB);
233	if FRaiseExceptionOnConnectError then Check4DataBaseError;
234	if InErrorState then
235	FAttachmentIntf := nil;
236	end;
237	GetODSAndConnectionInfo;
238	ExtractConnectString(sql,FDatabaseName);
239	DPBFromCreateSQL(sql);
240	end;
241
242	destructor TFB30Attachment.Destroy;
243	begin
244	inherited Destroy;
245	if assigned(FAttachmentIntf) then
246	FAttachmentIntf.release;
247	end;
248
249	function TFB30Attachment.GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer): IDBInformation;
250	begin
251	Result := TDBInformation.Create(Firebird30ClientAPI);
252	with FFirebird30ClientAPI, Result as TDBInformation do
253	begin
254	FAttachmentIntf.getInfo(StatusIntf, ReqBufLen, BytePtr(ReqBuffer),
255	getBufSize, BytePtr(Buffer));
256	Check4DataBaseError;
257	end
258	end;
259
260	procedure TFB30Attachment.Connect;
261	begin
262	with FFirebird30ClientAPI do
263	begin
264	FAttachmentIntf := ProviderIntf.attachDatabase(StatusIntf,PAnsiChar(FDatabaseName),
265	(DPB as TDPB).getDataLength,
266	BytePtr((DPB as TDPB).getBuffer));
267	if FRaiseExceptionOnConnectError then Check4DataBaseError;
268	if InErrorState then
269	FAttachmentIntf := nil
270	else
271	GetODSAndConnectionInfo;
272
273	end;
274	end;
275
276	procedure TFB30Attachment.Disconnect(Force: boolean);
277	begin
278	if IsConnected then
279	with FFirebird30ClientAPI do
280	begin
281	EndAllTransactions;
282	FAttachmentIntf.Detach(StatusIntf);
283	if not Force and InErrorState then
284	IBDataBaseError;
285	FAttachmentIntf := nil;
286	FHasDefaultCharSet := false;
287	FCodePage := CP_NONE;
288	FCharSetID := 0;
289	FTimeZoneServices := nil;
290	end;
291	end;
292
293	function TFB30Attachment.IsConnected: boolean;
294	begin
295	Result := FAttachmentIntf <> nil;
296	end;
297
298	procedure TFB30Attachment.DropDatabase;
299	begin
300	if IsConnected then
301	with FFirebird30ClientAPI do
302	begin
303	EndAllTransactions;
304	FAttachmentIntf.dropDatabase(StatusIntf);
305	Check4DataBaseError;
306	FAttachmentIntf := nil;
307	end;
308	end;
309
310	function TFB30Attachment.StartTransaction(TPB: array of byte;
311	DefaultCompletion: TTransactionCompletion): ITransaction;
312	begin
313	CheckHandle;
314	Result := TFB30Transaction.Create(FFirebird30ClientAPI,self,TPB,DefaultCompletion);
315	end;
316
317	function TFB30Attachment.StartTransaction(TPB: ITPB;
318	DefaultCompletion: TTransactionCompletion): ITransaction;
319	begin
320	CheckHandle;
321	Result := TFB30Transaction.Create(FFirebird30ClientAPI,self,TPB,DefaultCompletion);
322	end;
323
324	procedure TFB30Attachment.ExecImmediate(transaction: ITransaction; sql: AnsiString;
325	aSQLDialect: integer);
326	begin
327	CheckHandle;
328	with FFirebird30ClientAPI do
329	begin
330	FAttachmentIntf.execute(StatusIntf,(transaction as TFB30Transaction).TransactionIntf,
331	Length(sql),PAnsiChar(sql),aSQLDialect,nil,nil,nil,nil);
332	Check4DataBaseError;
333	end;
334	end;
335
336	function TFB30Attachment.Prepare(transaction: ITransaction; sql: AnsiString;
337	aSQLDialect: integer): IStatement;
338	begin
339	CheckHandle;
340	Result := TFB30Statement.Create(self,transaction,sql,aSQLDialect);
341	end;
342
343	function TFB30Attachment.PrepareWithNamedParameters(transaction: ITransaction;
344	sql: AnsiString; aSQLDialect: integer; GenerateParamNames: boolean;
345	CaseSensitiveParams: boolean): IStatement;
346	begin
347	CheckHandle;
348	Result := TFB30Statement.CreateWithParameterNames(self,transaction,sql,aSQLDialect,
349	GenerateParamNames,CaseSensitiveParams);
350	end;
351
352	function TFB30Attachment.GetEventHandler(Events: TStrings): IEvents;
353	begin
354	CheckHandle;
355	Result := TFB30Events.Create(self,Events);
356	end;
357
358	function TFB30Attachment.CreateBlob(transaction: ITransaction;
359	BlobMetaData: IBlobMetaData; BPB: IBPB): IBlob;
360	begin
361	CheckHandle;
362	Result := TFB30Blob.Create(self,transaction as TFB30Transaction, BlobMetaData,BPB);
363	end;
364
365	function TFB30Attachment.CreateBlob(transaction: ITransaction;
366	SubType: integer; aCharSetID: cardinal; BPB: IBPB): IBlob;
367	begin
368	CheckHandle;
369	Result := TFB30Blob.Create(self,transaction as TFB30Transaction, SubType,aCharSetID,BPB);
370	end;
371
372	function TFB30Attachment.OpenBlob(transaction: ITransaction;
373	BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB): IBlob;
374	begin
375	CheckHandle;
376	Result := TFB30Blob.Create(self,transaction as TFB30transaction,BlobMetaData,BlobID,BPB);
377	end;
378
379	function TFB30Attachment.OpenArray(transaction: ITransaction;
380	ArrayMetaData: IArrayMetaData; ArrayID: TISC_QUAD): IArray;
381	begin
382	CheckHandle;
383	Result := TFB30Array.Create(self,transaction as TFB30Transaction,
384	ArrayMetaData,ArrayID);
385	end;
386
387	function TFB30Attachment.CreateArray(transaction: ITransaction;
388	ArrayMetaData: IArrayMetaData): IArray;
389	begin
390	CheckHandle;
391	Result := TFB30Array.Create(self,transaction as TFB30Transaction,ArrayMetaData);
392	end;
393
394	function TFB30Attachment.CreateArrayMetaData(SQLType: cardinal; tableName: AnsiString; columnName: AnsiString;
395	Scale: integer; size: cardinal; aCharSetID: cardinal; dimensions: cardinal;
396	bounds: TArrayBounds): IArrayMetaData;
397	begin
398	Result := TFB30ArrayMetaData.Create(self,SQLType,tableName,ColumnName,Scale,size,aCharSetID, dimensions,bounds);
399	end;
400
401	function TFB30Attachment.GetBlobMetaData(Transaction: ITransaction; tableName,
402	columnName: AnsiString): IBlobMetaData;
403	begin
404	CheckHandle;
405	Result := TFB30BlobMetaData.Create(self,Transaction as TFB30Transaction,tableName,columnName);
406	end;
407
408	function TFB30Attachment.GetArrayMetaData(Transaction: ITransaction; tableName,
409	columnName: AnsiString): IArrayMetaData;
410	begin
411	CheckHandle;
412	Result := TFB30ArrayMetaData.Create(self,Transaction as TFB30Transaction,tableName,columnName);
413	end;
414
415	procedure TFB30Attachment.getFBVersion(version: TStrings);
416	var bufferObj: TVersionCallback;
417	begin
418	version.Clear;
419	bufferObj := TVersionCallback.Create(Firebird30ClientAPI,version);
420	try
421	with FFirebird30ClientAPI do
422	begin
423	UtilIntf.getFbVersion(StatusIntf,FAttachmentIntf,bufferObj);
424	Check4DataBaseError;
425	end;
426	finally
427	bufferObj.Free;
428	end;
429	end;
430
431	function TFB30Attachment.HasDecFloatSupport: boolean;
432	begin
433	Result := (FFirebird30ClientAPI.GetClientMajor >= 4) and
434	(GetODSMajorVersion >= 13);
435	end;
436
437	function TFB30Attachment.GetTimeZoneServices: ITimeZoneServices;
438	begin
439	if not HasTimeZoneSupport then
440	IBError(ibxeNotSupported,[]);
441
442	if FTimeZoneServices = nil then
443	FTimeZoneServices := TFB30TimeZoneServices.Create(self);
444	Result := FTimeZoneServices;
445	end;
446
447	function TFB30Attachment.HasTimeZoneSupport: boolean;
448	begin
449	Result := (FFirebird30ClientAPI.GetClientMajor >= 4) and
450	(GetODSMajorVersion >= 13);
451	end;
452
453	end.
454