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;
    function HasBatchMode: 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.HasBatchMode: boolean;
begin
  Result := FFirebird30ClientAPI.Firebird4orLater 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:	345
Committed:	Mon Aug 23 14:22:29 2021 UTC (3 years, 3 months ago) by tony
Content type:	text/x-pascal
File size:	14914 byte(s)
Log Message:	Merged into public 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	function HasBatchMode: boolean; override;
105
106	{Time Zone Support}
107	function GetTimeZoneServices: ITimeZoneServices; override;
108	function HasTimeZoneSupport: boolean; override;
109	end;
110
111	implementation
112
113	uses FB30Transaction, FB30Statement, FB30Array, FB30Blob, FBMessages,
114	FBOutputBlock, FB30Events, IBUtils, FB30TimeZoneServices;
115
116	type
117	{ TVersionCallback }
118
119	TVersionCallback = class(Firebird.IVersionCallbackImpl)
120	private
121	FOutput: TStrings;
122	FFirebirdClientAPI: TFBClientAPI;
123	public
124	constructor Create(FirebirdClientAPI: TFBClientAPI; output: TStrings);
125	procedure callback(status: Firebird.IStatus; text: PAnsiChar); override;
126	end;
127
128	{ TVersionCallback }
129
130	constructor TVersionCallback.Create(FirebirdClientAPI: TFBClientAPI;
131	output: TStrings);
132	begin
133	inherited Create;
134	FFirebirdClientAPI := FirebirdClientAPI;
135	FOutput := output;
136	end;
137
138	procedure TVersionCallback.callback(status: Firebird.IStatus; text: PAnsiChar);
139	var StatusObj: TFB30StatusObject;
140	begin
141	if ((status.getState and status.STATE_ERRORS) <> 0) then
142	begin
143	StatusObj := TFB30StatusObject.Create(FFirebirdClientAPI,status);
144	try
145	raise EIBInterBaseError.Create(StatusObj);
146	finally
147	StatusObj.Free;
148	end;
149	end;
150	FOutput.Add(text);
151	end;
152
153
154	{ TFB30Attachment }
155
156	procedure TFB30Attachment.SetUseRemoteICU(aValue: boolean);
157	begin
158	if (FUsingRemoteICU <> aValue) and (GetODSMajorVersion >= 13) then
159	begin
160	if aValue then
161	ExecImmediate([isc_tpb_write,isc_tpb_wait,isc_tpb_concurrency],'SET BIND OF TIME ZONE TO EXTENDED')
162	else
163	ExecImmediate([isc_tpb_write,isc_tpb_wait,isc_tpb_concurrency],'SET BIND OF TIME ZONE TO NATIVE');
164	FUsingRemoteICU := aValue;
165	end;
166	end;
167
168	procedure TFB30Attachment.CheckHandle;
169	begin
170	if FAttachmentIntf = nil then
171	IBError(ibxeDatabaseClosed,[nil]);
172	end;
173
174	constructor TFB30Attachment.Create(api: TFB30ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
175	RaiseExceptionOnConnectError: boolean);
176	begin
177	FFirebird30ClientAPI := api;
178	if aDPB = nil then
179	begin
180	if RaiseExceptionOnConnectError then
181	IBError(ibxeNoDPB,[nil]);
182	Exit;
183	end;
184	inherited Create(api,DatabaseName,aDPB,RaiseExceptionOnConnectError);
185	Connect;
186	end;
187
188	constructor TFB30Attachment.CreateDatabase(api: TFB30ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
189	RaiseExceptionOnError: boolean);
190	var Param: IDPBItem;
191	sql: AnsiString;
192	IsCreateDB: boolean;
193	begin
194	inherited Create(api,DatabaseName,aDPB,RaiseExceptionOnError);
195	FFirebird30ClientAPI := api;
196	IsCreateDB := true;
197	if aDPB <> nil then
198	begin
199	Param := aDPB.Find(isc_dpb_set_db_SQL_dialect);
200	if Param <> nil then
201	FSQLDialect := Param.AsByte;
202	end;
203	sql := GenerateCreateDatabaseSQL(DatabaseName,aDPB);
204	with FFirebird30ClientAPI do
205	begin
206	FAttachmentIntf := UtilIntf.executeCreateDatabase(StatusIntf,Length(sql),
207	PAnsiChar(sql),FSQLDialect,@IsCreateDB);
208	if FRaiseExceptionOnConnectError then Check4DataBaseError;
209	if InErrorState then
210	FAttachmentIntf := nil
211	else
212	if aDPB <> nil then
213	{Connect using known parameters}
214	begin
215	Disconnect;
216	Connect;
217	end
218	else
219	GetODSAndConnectionInfo;
220	end;
221	end;
222
223	constructor TFB30Attachment.CreateDatabase(api: TFB30ClientAPI; sql: AnsiString; aSQLDialect: integer;
224	RaiseExceptionOnError: boolean);
225	var IsCreateDB: boolean;
226	begin
227	inherited Create(api,'',nil,RaiseExceptionOnError);
228	FFirebird30ClientAPI := api;
229	FSQLDialect := aSQLDialect;
230	with FFirebird30ClientAPI do
231	begin
232	FAttachmentIntf := UtilIntf.executeCreateDatabase(StatusIntf,Length(sql),
233	PAnsiChar(sql),aSQLDialect,@IsCreateDB);
234	if FRaiseExceptionOnConnectError then Check4DataBaseError;
235	if InErrorState then
236	FAttachmentIntf := nil;
237	end;
238	GetODSAndConnectionInfo;
239	ExtractConnectString(sql,FDatabaseName);
240	DPBFromCreateSQL(sql);
241	end;
242
243	destructor TFB30Attachment.Destroy;
244	begin
245	inherited Destroy;
246	if assigned(FAttachmentIntf) then
247	FAttachmentIntf.release;
248	end;
249
250	function TFB30Attachment.GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer): IDBInformation;
251	begin
252	Result := TDBInformation.Create(Firebird30ClientAPI);
253	with FFirebird30ClientAPI, Result as TDBInformation do
254	begin
255	FAttachmentIntf.getInfo(StatusIntf, ReqBufLen, BytePtr(ReqBuffer),
256	getBufSize, BytePtr(Buffer));
257	Check4DataBaseError;
258	end
259	end;
260
261	procedure TFB30Attachment.Connect;
262	begin
263	with FFirebird30ClientAPI do
264	begin
265	FAttachmentIntf := ProviderIntf.attachDatabase(StatusIntf,PAnsiChar(FDatabaseName),
266	(DPB as TDPB).getDataLength,
267	BytePtr((DPB as TDPB).getBuffer));
268	if FRaiseExceptionOnConnectError then Check4DataBaseError;
269	if InErrorState then
270	FAttachmentIntf := nil
271	else
272	GetODSAndConnectionInfo;
273
274	end;
275	end;
276
277	procedure TFB30Attachment.Disconnect(Force: boolean);
278	begin
279	if IsConnected then
280	with FFirebird30ClientAPI do
281	begin
282	EndAllTransactions;
283	FAttachmentIntf.Detach(StatusIntf);
284	if not Force and InErrorState then
285	IBDataBaseError;
286	FAttachmentIntf := nil;
287	FHasDefaultCharSet := false;
288	FCodePage := CP_NONE;
289	FCharSetID := 0;
290	FTimeZoneServices := nil;
291	end;
292	end;
293
294	function TFB30Attachment.IsConnected: boolean;
295	begin
296	Result := FAttachmentIntf <> nil;
297	end;
298
299	procedure TFB30Attachment.DropDatabase;
300	begin
301	if IsConnected then
302	with FFirebird30ClientAPI do
303	begin
304	EndAllTransactions;
305	FAttachmentIntf.dropDatabase(StatusIntf);
306	Check4DataBaseError;
307	FAttachmentIntf := nil;
308	end;
309	end;
310
311	function TFB30Attachment.StartTransaction(TPB: array of byte;
312	DefaultCompletion: TTransactionCompletion): ITransaction;
313	begin
314	CheckHandle;
315	Result := TFB30Transaction.Create(FFirebird30ClientAPI,self,TPB,DefaultCompletion);
316	end;
317
318	function TFB30Attachment.StartTransaction(TPB: ITPB;
319	DefaultCompletion: TTransactionCompletion): ITransaction;
320	begin
321	CheckHandle;
322	Result := TFB30Transaction.Create(FFirebird30ClientAPI,self,TPB,DefaultCompletion);
323	end;
324
325	procedure TFB30Attachment.ExecImmediate(transaction: ITransaction; sql: AnsiString;
326	aSQLDialect: integer);
327	begin
328	CheckHandle;
329	with FFirebird30ClientAPI do
330	begin
331	FAttachmentIntf.execute(StatusIntf,(transaction as TFB30Transaction).TransactionIntf,
332	Length(sql),PAnsiChar(sql),aSQLDialect,nil,nil,nil,nil);
333	Check4DataBaseError;
334	end;
335	end;
336
337	function TFB30Attachment.Prepare(transaction: ITransaction; sql: AnsiString;
338	aSQLDialect: integer): IStatement;
339	begin
340	CheckHandle;
341	Result := TFB30Statement.Create(self,transaction,sql,aSQLDialect);
342	end;
343
344	function TFB30Attachment.PrepareWithNamedParameters(transaction: ITransaction;
345	sql: AnsiString; aSQLDialect: integer; GenerateParamNames: boolean;
346	CaseSensitiveParams: boolean): IStatement;
347	begin
348	CheckHandle;
349	Result := TFB30Statement.CreateWithParameterNames(self,transaction,sql,aSQLDialect,
350	GenerateParamNames,CaseSensitiveParams);
351	end;
352
353	function TFB30Attachment.GetEventHandler(Events: TStrings): IEvents;
354	begin
355	CheckHandle;
356	Result := TFB30Events.Create(self,Events);
357	end;
358
359	function TFB30Attachment.CreateBlob(transaction: ITransaction;
360	BlobMetaData: IBlobMetaData; BPB: IBPB): IBlob;
361	begin
362	CheckHandle;
363	Result := TFB30Blob.Create(self,transaction as TFB30Transaction, BlobMetaData,BPB);
364	end;
365
366	function TFB30Attachment.CreateBlob(transaction: ITransaction;
367	SubType: integer; aCharSetID: cardinal; BPB: IBPB): IBlob;
368	begin
369	CheckHandle;
370	Result := TFB30Blob.Create(self,transaction as TFB30Transaction, SubType,aCharSetID,BPB);
371	end;
372
373	function TFB30Attachment.OpenBlob(transaction: ITransaction;
374	BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB): IBlob;
375	begin
376	CheckHandle;
377	Result := TFB30Blob.Create(self,transaction as TFB30transaction,BlobMetaData,BlobID,BPB);
378	end;
379
380	function TFB30Attachment.OpenArray(transaction: ITransaction;
381	ArrayMetaData: IArrayMetaData; ArrayID: TISC_QUAD): IArray;
382	begin
383	CheckHandle;
384	Result := TFB30Array.Create(self,transaction as TFB30Transaction,
385	ArrayMetaData,ArrayID);
386	end;
387
388	function TFB30Attachment.CreateArray(transaction: ITransaction;
389	ArrayMetaData: IArrayMetaData): IArray;
390	begin
391	CheckHandle;
392	Result := TFB30Array.Create(self,transaction as TFB30Transaction,ArrayMetaData);
393	end;
394
395	function TFB30Attachment.CreateArrayMetaData(SQLType: cardinal; tableName: AnsiString; columnName: AnsiString;
396	Scale: integer; size: cardinal; aCharSetID: cardinal; dimensions: cardinal;
397	bounds: TArrayBounds): IArrayMetaData;
398	begin
399	Result := TFB30ArrayMetaData.Create(self,SQLType,tableName,ColumnName,Scale,size,aCharSetID, dimensions,bounds);
400	end;
401
402	function TFB30Attachment.GetBlobMetaData(Transaction: ITransaction; tableName,
403	columnName: AnsiString): IBlobMetaData;
404	begin
405	CheckHandle;
406	Result := TFB30BlobMetaData.Create(self,Transaction as TFB30Transaction,tableName,columnName);
407	end;
408
409	function TFB30Attachment.GetArrayMetaData(Transaction: ITransaction; tableName,
410	columnName: AnsiString): IArrayMetaData;
411	begin
412	CheckHandle;
413	Result := TFB30ArrayMetaData.Create(self,Transaction as TFB30Transaction,tableName,columnName);
414	end;
415
416	procedure TFB30Attachment.getFBVersion(version: TStrings);
417	var bufferObj: TVersionCallback;
418	begin
419	version.Clear;
420	bufferObj := TVersionCallback.Create(Firebird30ClientAPI,version);
421	try
422	with FFirebird30ClientAPI do
423	begin
424	UtilIntf.getFbVersion(StatusIntf,FAttachmentIntf,bufferObj);
425	Check4DataBaseError;
426	end;
427	finally
428	bufferObj.Free;
429	end;
430	end;
431
432	function TFB30Attachment.HasDecFloatSupport: boolean;
433	begin
434	Result := (FFirebird30ClientAPI.GetClientMajor >= 4) and
435	(GetODSMajorVersion >= 13);
436	end;
437
438	function TFB30Attachment.HasBatchMode: boolean;
439	begin
440	Result := FFirebird30ClientAPI.Firebird4orLater and
441	(GetODSMajorVersion >= 13);
442	end;
443
444	function TFB30Attachment.GetTimeZoneServices: ITimeZoneServices;
445	begin
446	if not HasTimeZoneSupport then
447	IBError(ibxeNotSupported,[]);
448
449	if FTimeZoneServices = nil then
450	FTimeZoneServices := TFB30TimeZoneServices.Create(self);
451	Result := FTimeZoneServices;
452	end;
453
454	function TFB30Attachment.HasTimeZoneSupport: boolean;
455	begin
456	Result := (FFirebird30ClientAPI.GetClientMajor >= 4) and
457	(GetODSMajorVersion >= 13);
458	end;
459
460	end.
461