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;
    function GetAttachment: IAttachment; 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; aName: AnsiString=''): ITransaction; override;
    function StartTransaction(TPB: ITPB; DefaultCompletion: TTransactionCompletion; aName: AnsiString=''): ITransaction; override;
    procedure ExecImmediate(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer); override;
    function Prepare(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer; CursorName: AnsiString=''): IStatement; override;
    function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
                       aSQLDialect: integer; GenerateParamNames: boolean=false;
                       CaseSensitiveParams: boolean=false; CursorName: AnsiString=''): 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;
    function HasScollableCursors: boolean;

    {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;

function TFB30Attachment.GetAttachment: IAttachment;
begin
  Result := self;
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
  inherited Disconnect(Force);
  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;
      EndSession(false);
      FAttachmentIntf.dropDatabase(StatusIntf);
      Check4DataBaseError;
      FAttachmentIntf := nil;
    end;
end;

function TFB30Attachment.StartTransaction(TPB: array of byte;
  DefaultCompletion: TTransactionCompletion; aName: AnsiString): ITransaction;
begin
  CheckHandle;
  Result := TFB30Transaction.Create(FFirebird30ClientAPI,self,TPB,DefaultCompletion, aName);
end;

function TFB30Attachment.StartTransaction(TPB: ITPB;
  DefaultCompletion: TTransactionCompletion; aName: AnsiString): ITransaction;
begin
  CheckHandle;
  Result := TFB30Transaction.Create(FFirebird30ClientAPI,self,TPB,DefaultCompletion,aName);
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; CursorName: AnsiString): IStatement;
begin
  CheckHandle;
  Result := TFB30Statement.Create(self,transaction,sql,aSQLDialect,CursorName);
end;

function TFB30Attachment.PrepareWithNamedParameters(transaction: ITransaction;
  sql: AnsiString; aSQLDialect: integer; GenerateParamNames: boolean;
  CaseSensitiveParams: boolean; CursorName: AnsiString): IStatement;
begin
  CheckHandle;
  Result := TFB30Statement.CreateWithParameterNames(self,transaction,sql,aSQLDialect,
         GenerateParamNames,CaseSensitiveParams,CursorName);
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.HasScollableCursors: boolean;
begin
  Result := (GetODSMajorVersion >= 12);
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:	363
Committed:	Tue Dec 7 13:30:05 2021 UTC (2 years, 4 months ago) by tony
Content type:	text/x-pascal
File size:	15473 byte(s)
Log Message:	add fbintf
#	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	function GetAttachment: IAttachment; override;
57	public
58	constructor Create(api: TFB30ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
59	RaiseExceptionOnConnectError: boolean);
60	constructor CreateDatabase(api: TFB30ClientAPI; DatabaseName: AnsiString; aDPB: IDPB; RaiseExceptionOnError: boolean); overload;
61	constructor CreateDatabase(api: TFB30ClientAPI; sql: AnsiString; aSQLDialect: integer;
62	RaiseExceptionOnError: boolean); overload;
63	destructor Destroy; override;
64	function GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer): IDBInformation;
65	override;
66	property AttachmentIntf: Firebird.IAttachment read FAttachmentIntf;
67	property Firebird30ClientAPI: TFB30ClientAPI read FFirebird30ClientAPI;
68
69	public
70	{IAttachment}
71	procedure Connect;
72	procedure Disconnect(Force: boolean=false); override;
73	function IsConnected: boolean; override;
74	procedure DropDatabase;
75	function StartTransaction(TPB: array of byte; DefaultCompletion: TTransactionCompletion; aName: AnsiString=''): ITransaction; override;
76	function StartTransaction(TPB: ITPB; DefaultCompletion: TTransactionCompletion; aName: AnsiString=''): ITransaction; override;
77	procedure ExecImmediate(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer); override;
78	function Prepare(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer; CursorName: AnsiString=''): IStatement; override;
79	function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
80	aSQLDialect: integer; GenerateParamNames: boolean=false;
81	CaseSensitiveParams: boolean=false; CursorName: AnsiString=''): IStatement; override;
82
83	{Events}
84	function GetEventHandler(Events: TStrings): IEvents; override;
85
86	{Blob - may use to open existing Blobs. However, ISQLData.AsBlob is preferred}
87
88	function CreateBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BPB: IBPB=nil): IBlob; overload; override;
89	function CreateBlob(transaction: ITransaction; SubType: integer; aCharSetID: cardinal=0; BPB: IBPB=nil): IBlob; overload;
90	function OpenBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload; override;
91
92	{Array}
93	function OpenArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData; ArrayID: TISC_QUAD): IArray; overload; override;
94	function CreateArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData): IArray; overload; override;
95	function CreateArrayMetaData(SQLType: cardinal; tableName: AnsiString;
96	columnName: AnsiString; Scale: integer; size: cardinal; aCharSetID: cardinal;
97	dimensions: cardinal; bounds: TArrayBounds): IArrayMetaData;
98
99
100	{Database Information}
101	function GetBlobMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IBlobMetaData; override;
102	function GetArrayMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IArrayMetaData; override;
103	procedure getFBVersion(version: TStrings);
104	function HasDecFloatSupport: boolean; override;
105	function HasBatchMode: boolean; override;
106	function HasScollableCursors: boolean;
107
108	{Time Zone Support}
109	function GetTimeZoneServices: ITimeZoneServices; override;
110	function HasTimeZoneSupport: boolean; override;
111	end;
112
113	implementation
114
115	uses FB30Transaction, FB30Statement, FB30Array, FB30Blob, FBMessages,
116	FBOutputBlock, FB30Events, IBUtils, FB30TimeZoneServices;
117
118	type
119	{ TVersionCallback }
120
121	TVersionCallback = class(Firebird.IVersionCallbackImpl)
122	private
123	FOutput: TStrings;
124	FFirebirdClientAPI: TFBClientAPI;
125	public
126	constructor Create(FirebirdClientAPI: TFBClientAPI; output: TStrings);
127	procedure callback(status: Firebird.IStatus; text: PAnsiChar); override;
128	end;
129
130	{ TVersionCallback }
131
132	constructor TVersionCallback.Create(FirebirdClientAPI: TFBClientAPI;
133	output: TStrings);
134	begin
135	inherited Create;
136	FFirebirdClientAPI := FirebirdClientAPI;
137	FOutput := output;
138	end;
139
140	procedure TVersionCallback.callback(status: Firebird.IStatus; text: PAnsiChar);
141	var StatusObj: TFB30StatusObject;
142	begin
143	if ((status.getState and status.STATE_ERRORS) <> 0) then
144	begin
145	StatusObj := TFB30StatusObject.Create(FFirebirdClientAPI,status);
146	try
147	raise EIBInterBaseError.Create(StatusObj);
148	finally
149	StatusObj.Free;
150	end;
151	end;
152	FOutput.Add(text);
153	end;
154
155
156	{ TFB30Attachment }
157
158	procedure TFB30Attachment.SetUseRemoteICU(aValue: boolean);
159	begin
160	if (FUsingRemoteICU <> aValue) and (GetODSMajorVersion >= 13) then
161	begin
162	if aValue then
163	ExecImmediate([isc_tpb_write,isc_tpb_wait,isc_tpb_concurrency],'SET BIND OF TIME ZONE TO EXTENDED')
164	else
165	ExecImmediate([isc_tpb_write,isc_tpb_wait,isc_tpb_concurrency],'SET BIND OF TIME ZONE TO NATIVE');
166	FUsingRemoteICU := aValue;
167	end;
168	end;
169
170	procedure TFB30Attachment.CheckHandle;
171	begin
172	if FAttachmentIntf = nil then
173	IBError(ibxeDatabaseClosed,[nil]);
174	end;
175
176	function TFB30Attachment.GetAttachment: IAttachment;
177	begin
178	Result := self;
179	end;
180
181	constructor TFB30Attachment.Create(api: TFB30ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
182	RaiseExceptionOnConnectError: boolean);
183	begin
184	FFirebird30ClientAPI := api;
185	if aDPB = nil then
186	begin
187	if RaiseExceptionOnConnectError then
188	IBError(ibxeNoDPB,[nil]);
189	Exit;
190	end;
191	inherited Create(api,DatabaseName,aDPB,RaiseExceptionOnConnectError);
192	Connect;
193	end;
194
195	constructor TFB30Attachment.CreateDatabase(api: TFB30ClientAPI; DatabaseName: AnsiString; aDPB: IDPB;
196	RaiseExceptionOnError: boolean);
197	var Param: IDPBItem;
198	sql: AnsiString;
199	IsCreateDB: boolean;
200	begin
201	inherited Create(api,DatabaseName,aDPB,RaiseExceptionOnError);
202	FFirebird30ClientAPI := api;
203	IsCreateDB := true;
204	if aDPB <> nil then
205	begin
206	Param := aDPB.Find(isc_dpb_set_db_SQL_dialect);
207	if Param <> nil then
208	FSQLDialect := Param.AsByte;
209	end;
210	sql := GenerateCreateDatabaseSQL(DatabaseName,aDPB);
211	with FFirebird30ClientAPI do
212	begin
213	FAttachmentIntf := UtilIntf.executeCreateDatabase(StatusIntf,Length(sql),
214	PAnsiChar(sql),FSQLDialect,@IsCreateDB);
215	if FRaiseExceptionOnConnectError then Check4DataBaseError;
216	if InErrorState then
217	FAttachmentIntf := nil
218	else
219	if aDPB <> nil then
220	{Connect using known parameters}
221	begin
222	Disconnect;
223	Connect;
224	end
225	else
226	GetODSAndConnectionInfo;
227	end;
228	end;
229
230	constructor TFB30Attachment.CreateDatabase(api: TFB30ClientAPI; sql: AnsiString; aSQLDialect: integer;
231	RaiseExceptionOnError: boolean);
232	var IsCreateDB: boolean;
233	begin
234	inherited Create(api,'',nil,RaiseExceptionOnError);
235	FFirebird30ClientAPI := api;
236	FSQLDialect := aSQLDialect;
237	with FFirebird30ClientAPI do
238	begin
239	FAttachmentIntf := UtilIntf.executeCreateDatabase(StatusIntf,Length(sql),
240	PAnsiChar(sql),aSQLDialect,@IsCreateDB);
241	if FRaiseExceptionOnConnectError then Check4DataBaseError;
242	if InErrorState then
243	FAttachmentIntf := nil;
244	end;
245	GetODSAndConnectionInfo;
246	ExtractConnectString(sql,FDatabaseName);
247	DPBFromCreateSQL(sql);
248	end;
249
250	destructor TFB30Attachment.Destroy;
251	begin
252	inherited Destroy;
253	if assigned(FAttachmentIntf) then
254	FAttachmentIntf.release;
255	end;
256
257	function TFB30Attachment.GetDBInfo(ReqBuffer: PByte; ReqBufLen: integer): IDBInformation;
258	begin
259	Result := TDBInformation.Create(Firebird30ClientAPI);
260	with FFirebird30ClientAPI, Result as TDBInformation do
261	begin
262	FAttachmentIntf.getInfo(StatusIntf, ReqBufLen, BytePtr(ReqBuffer),
263	getBufSize, BytePtr(Buffer));
264	Check4DataBaseError;
265	end
266	end;
267
268	procedure TFB30Attachment.Connect;
269	begin
270	with FFirebird30ClientAPI do
271	begin
272	FAttachmentIntf := ProviderIntf.attachDatabase(StatusIntf,PAnsiChar(FDatabaseName),
273	(DPB as TDPB).getDataLength,
274	BytePtr((DPB as TDPB).getBuffer));
275	if FRaiseExceptionOnConnectError then Check4DataBaseError;
276	if InErrorState then
277	FAttachmentIntf := nil
278	else
279	GetODSAndConnectionInfo;
280
281	end;
282	end;
283
284	procedure TFB30Attachment.Disconnect(Force: boolean);
285	begin
286	inherited Disconnect(Force);
287	if IsConnected then
288	with FFirebird30ClientAPI do
289	begin
290	EndAllTransactions;
291	FAttachmentIntf.Detach(StatusIntf);
292	if not Force and InErrorState then
293	IBDataBaseError;
294	FAttachmentIntf := nil;
295	FHasDefaultCharSet := false;
296	FCodePage := CP_NONE;
297	FCharSetID := 0;
298	FTimeZoneServices := nil;
299	end;
300	end;
301
302	function TFB30Attachment.IsConnected: boolean;
303	begin
304	Result := FAttachmentIntf <> nil;
305	end;
306
307	procedure TFB30Attachment.DropDatabase;
308	begin
309	if IsConnected then
310	with FFirebird30ClientAPI do
311	begin
312	EndAllTransactions;
313	EndSession(false);
314	FAttachmentIntf.dropDatabase(StatusIntf);
315	Check4DataBaseError;
316	FAttachmentIntf := nil;
317	end;
318	end;
319
320	function TFB30Attachment.StartTransaction(TPB: array of byte;
321	DefaultCompletion: TTransactionCompletion; aName: AnsiString): ITransaction;
322	begin
323	CheckHandle;
324	Result := TFB30Transaction.Create(FFirebird30ClientAPI,self,TPB,DefaultCompletion, aName);
325	end;
326
327	function TFB30Attachment.StartTransaction(TPB: ITPB;
328	DefaultCompletion: TTransactionCompletion; aName: AnsiString): ITransaction;
329	begin
330	CheckHandle;
331	Result := TFB30Transaction.Create(FFirebird30ClientAPI,self,TPB,DefaultCompletion,aName);
332	end;
333
334	procedure TFB30Attachment.ExecImmediate(transaction: ITransaction; sql: AnsiString;
335	aSQLDialect: integer);
336	begin
337	CheckHandle;
338	with FFirebird30ClientAPI do
339	begin
340	FAttachmentIntf.execute(StatusIntf,(transaction as TFB30Transaction).TransactionIntf,
341	Length(sql),PAnsiChar(sql),aSQLDialect,nil,nil,nil,nil);
342	Check4DataBaseError;
343	end;
344	end;
345
346	function TFB30Attachment.Prepare(transaction: ITransaction; sql: AnsiString;
347	aSQLDialect: integer; CursorName: AnsiString): IStatement;
348	begin
349	CheckHandle;
350	Result := TFB30Statement.Create(self,transaction,sql,aSQLDialect,CursorName);
351	end;
352
353	function TFB30Attachment.PrepareWithNamedParameters(transaction: ITransaction;
354	sql: AnsiString; aSQLDialect: integer; GenerateParamNames: boolean;
355	CaseSensitiveParams: boolean; CursorName: AnsiString): IStatement;
356	begin
357	CheckHandle;
358	Result := TFB30Statement.CreateWithParameterNames(self,transaction,sql,aSQLDialect,
359	GenerateParamNames,CaseSensitiveParams,CursorName);
360	end;
361
362	function TFB30Attachment.GetEventHandler(Events: TStrings): IEvents;
363	begin
364	CheckHandle;
365	Result := TFB30Events.Create(self,Events);
366	end;
367
368	function TFB30Attachment.CreateBlob(transaction: ITransaction;
369	BlobMetaData: IBlobMetaData; BPB: IBPB): IBlob;
370	begin
371	CheckHandle;
372	Result := TFB30Blob.Create(self,transaction as TFB30Transaction, BlobMetaData,BPB);
373	end;
374
375	function TFB30Attachment.CreateBlob(transaction: ITransaction;
376	SubType: integer; aCharSetID: cardinal; BPB: IBPB): IBlob;
377	begin
378	CheckHandle;
379	Result := TFB30Blob.Create(self,transaction as TFB30Transaction, SubType,aCharSetID,BPB);
380	end;
381
382	function TFB30Attachment.OpenBlob(transaction: ITransaction;
383	BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB): IBlob;
384	begin
385	CheckHandle;
386	Result := TFB30Blob.Create(self,transaction as TFB30transaction,BlobMetaData,BlobID,BPB);
387	end;
388
389	function TFB30Attachment.OpenArray(transaction: ITransaction;
390	ArrayMetaData: IArrayMetaData; ArrayID: TISC_QUAD): IArray;
391	begin
392	CheckHandle;
393	Result := TFB30Array.Create(self,transaction as TFB30Transaction,
394	ArrayMetaData,ArrayID);
395	end;
396
397	function TFB30Attachment.CreateArray(transaction: ITransaction;
398	ArrayMetaData: IArrayMetaData): IArray;
399	begin
400	CheckHandle;
401	Result := TFB30Array.Create(self,transaction as TFB30Transaction,ArrayMetaData);
402	end;
403
404	function TFB30Attachment.CreateArrayMetaData(SQLType: cardinal; tableName: AnsiString; columnName: AnsiString;
405	Scale: integer; size: cardinal; aCharSetID: cardinal; dimensions: cardinal;
406	bounds: TArrayBounds): IArrayMetaData;
407	begin
408	Result := TFB30ArrayMetaData.Create(self,SQLType,tableName,ColumnName,Scale,size,aCharSetID, dimensions,bounds);
409	end;
410
411	function TFB30Attachment.GetBlobMetaData(Transaction: ITransaction; tableName,
412	columnName: AnsiString): IBlobMetaData;
413	begin
414	CheckHandle;
415	Result := TFB30BlobMetaData.Create(self,Transaction as TFB30Transaction,tableName,columnName);
416	end;
417
418	function TFB30Attachment.GetArrayMetaData(Transaction: ITransaction; tableName,
419	columnName: AnsiString): IArrayMetaData;
420	begin
421	CheckHandle;
422	Result := TFB30ArrayMetaData.Create(self,Transaction as TFB30Transaction,tableName,columnName);
423	end;
424
425	procedure TFB30Attachment.getFBVersion(version: TStrings);
426	var bufferObj: TVersionCallback;
427	begin
428	version.Clear;
429	bufferObj := TVersionCallback.Create(Firebird30ClientAPI,version);
430	try
431	with FFirebird30ClientAPI do
432	begin
433	UtilIntf.getFbVersion(StatusIntf,FAttachmentIntf,bufferObj);
434	Check4DataBaseError;
435	end;
436	finally
437	bufferObj.Free;
438	end;
439	end;
440
441	function TFB30Attachment.HasDecFloatSupport: boolean;
442	begin
443	Result := (FFirebird30ClientAPI.GetClientMajor >= 4) and
444	(GetODSMajorVersion >= 13);
445	end;
446
447	function TFB30Attachment.HasBatchMode: boolean;
448	begin
449	Result := FFirebird30ClientAPI.Firebird4orLater and
450	(GetODSMajorVersion >= 13);
451	end;
452
453	function TFB30Attachment.HasScollableCursors: boolean;
454	begin
455	Result := (GetODSMajorVersion >= 12);
456	end;
457
458	function TFB30Attachment.GetTimeZoneServices: ITimeZoneServices;
459	begin
460	if not HasTimeZoneSupport then
461	IBError(ibxeNotSupported,[]);
462
463	if FTimeZoneServices = nil then
464	FTimeZoneServices := TFB30TimeZoneServices.Create(self);
465	Result := FTimeZoneServices;
466	end;
467
468	function TFB30Attachment.HasTimeZoneSupport: boolean;
469	begin
470	Result := (FFirebird30ClientAPI.GetClientMajor >= 4) and
471	(GetODSMajorVersion >= 13);
472	end;
473
474	end.
475