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(*
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* Firebird Interface (fbintf). The fbintf components provide a set of
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* Pascal language bindings for the Firebird API.
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*
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* The contents of this file are subject to the Initial Developer's
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* Public License Version 1.0 (the "License"); you may not use this
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* file except in compliance with the License. You may obtain a copy
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* of the License here:
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*
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* http://www.firebirdsql.org/index.php?op=doc&id=idpl
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing rights
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* and limitations under the License.
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*
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* The Initial Developer of the Original Code is Tony Whyman.
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*
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* The Original Code is (C) 2016 Tony Whyman, MWA Software
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* (http://www.mwasoftware.co.uk).
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*
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* All Rights Reserved.
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*
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* Contributor(s): ______________________________________.
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*
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*)
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unit FBAttachment;
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{$IFDEF MSWINDOWS}
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{$DEFINE WINDOWS}
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{$ENDIF}
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{$IFDEF FPC}
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{$mode delphi}
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{$interfaces COM}
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{$define HASREQEX}
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{$ENDIF}
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interface
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uses
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Classes, SysUtils, {$IFDEF WINDOWS} windows, {$ENDIF} IB, FBParamBlock, FBActivityMonitor;
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type
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TCharsetMap = record
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CharsetID: integer;
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CharSetName: AnsiString;
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CharSetWidth: integer;
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CodePage: TSystemCodePage;
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AllowReverseLookup: boolean; {used to ensure that lookup of CP_UTF* does not return UNICODE_FSS}
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end;
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{ TFBAttachment }
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TFBAttachment = class(TActivityHandler)
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private
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FDPB: IDPB;
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FFirebirdAPI: IFirebirdAPI;
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FODSMajorVersion: integer;
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FODSMinorVersion: integer;
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FUserCharSetMap: array of TCharSetMap;
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protected
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FDatabaseName: AnsiString;
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FRaiseExceptionOnConnectError: boolean;
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FSQLDialect: integer;
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FHasDefaultCharSet: boolean;
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FCharSetID: integer;
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FCodePage: TSystemCodePage;
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FRemoteProtocol: AnsiString;
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constructor Create(DatabaseName: AnsiString; DPB: IDPB;
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RaiseExceptionOnConnectError: boolean);
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procedure CheckHandle; virtual; abstract;
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function GenerateCreateDatabaseSQL(DatabaseName: AnsiString; aDPB: IDPB): AnsiString;
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procedure GetODSAndConnectionInfo;
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function IsConnected: boolean; virtual; abstract;
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procedure EndAllTransactions;
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procedure DPBFromCreateSQL(CreateSQL: AnsiString);
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procedure SetParameters(SQLParams: ISQLParams; params: array of const);
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public
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destructor Destroy; override;
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function getDPB: IDPB;
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function AllocateBPB: IBPB;
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function StartTransaction(TPB: array of byte; DefaultCompletion: TTransactionCompletion): ITransaction; overload; virtual; abstract;
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function StartTransaction(TPB: ITPB; DefaultCompletion: TTransactionCompletion): ITransaction; overload; virtual; abstract;
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procedure Disconnect(Force: boolean=false); virtual; abstract;
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procedure ExecImmediate(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer); overload; virtual; abstract;
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procedure ExecImmediate(TPB: array of byte; sql: AnsiString; aSQLDialect: integer); overload;
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procedure ExecImmediate(transaction: ITransaction; sql: AnsiString); overload;
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procedure ExecImmediate(TPB: array of byte; sql: AnsiString); overload;
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function ExecuteSQL(TPB: array of byte; sql: AnsiString; SQLDialect: integer; params: array of const): IResults; overload;
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function ExecuteSQL(transaction: ITransaction; sql: AnsiString; SQLDialect: integer; params: array of const): IResults; overload;
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function ExecuteSQL(TPB: array of byte; sql: AnsiString; params: array of const): IResults; overload;
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function ExecuteSQL(transaction: ITransaction; sql: AnsiString; params: array of const): IResults; overload;
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function OpenCursor(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer): IResultSet; overload;
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function OpenCursor(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer;
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params: array of const): IResultSet; overload;
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function OpenCursor(transaction: ITransaction; sql: AnsiString): IResultSet; overload;
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function OpenCursor(transaction: ITransaction; sql: AnsiString;
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params: array of const): IResultSet; overload;
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function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer): IResultSet; overload;
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function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer;
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params: array of const): IResultSet; overload;
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function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString): IResultSet; overload;
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function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString;
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params: array of const): IResultSet; overload;
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function OpenCursorAtStart(sql: AnsiString): IResultSet; overload;
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function OpenCursorAtStart(sql: AnsiString;
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params: array of const): IResultSet; overload;
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function Prepare(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer): IStatement; overload; virtual; abstract;
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function Prepare(transaction: ITransaction; sql: AnsiString): IStatement; overload;
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function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
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aSQLDialect: integer; GenerateParamNames: boolean=false): IStatement; overload; virtual; abstract;
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function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
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GenerateParamNames: boolean=false): IStatement; overload;
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function GetEventHandler(Events: TStrings): IEvents; overload; virtual; abstract;
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function GetEventHandler(Event: AnsiString): IEvents; overload;
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function GetSQLDialect: integer;
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function OpenBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload; virtual; abstract;
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function OpenBlob(transaction: ITransaction; Field: ISQLData; BPB: IBPB=nil): IBlob; overload;
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property SQLDialect: integer read FSQLDialect;
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property DPB: IDPB read FDPB;
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public
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function GetDBInformation(Requests: array of byte): IDBInformation; overload; virtual; abstract;
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function GetDBInformation(Request: byte): IDBInformation; overload; virtual; abstract;
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function GetConnectString: AnsiString;
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function GetRemoteProtocol: AnsiString;
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function GetODSMajorVersion: integer;
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function GetODSMinorVersion: integer;
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{Character Sets}
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function HasDefaultCharSet: boolean;
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function GetDefaultCharSetID: integer;
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function GetCharsetName(CharSetID: integer): AnsiString;
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function CharSetID2CodePage(CharSetID: integer; var CodePage: TSystemCodePage): boolean;
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function CodePage2CharSetID(CodePage: TSystemCodePage; var CharSetID: integer): boolean;
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function CharSetName2CharSetID(CharSetName: AnsiString; var CharSetID: integer): boolean;
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function CharSetWidth(CharSetID: integer; var Width: integer): boolean;
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procedure RegisterCharSet(CharSetName: AnsiString; CodePage: TSystemCodePage;
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AllowReverseLookup:boolean; out CharSetID: integer);
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property CharSetID: integer read FCharSetID;
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property CodePage: TSystemCodePage read FCodePage;
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end;
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implementation
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uses FBMessages, FBTransaction {$IFDEF HASREQEX}, RegExpr{$ENDIF};
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const
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CharSetMap: array [0..69] of TCharsetMap = (
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(CharsetID: 0; CharSetName: 'NONE'; CharSetWidth: 1; CodePage: CP_ACP; AllowReverseLookup: true),
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(CharsetID: 1; CharSetName: 'OCTETS'; CharSetWidth: 1; CodePage: CP_NONE; AllowReverseLookup: true),
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(CharsetID: 2; CharSetName: 'ASCII'; CharSetWidth: 1; CodePage: CP_ASCII; AllowReverseLookup: true),
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(CharsetID: 3; CharSetName: 'UNICODE_FSS'; CharSetWidth: 3; CodePage: CP_UTF8; AllowReverseLookup: false),
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(CharsetID: 4; CharSetName: 'UTF8'; CharSetWidth: 4; CodePage: CP_UTF8; AllowReverseLookup: true),
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(CharsetID: 5; CharSetName: 'SJIS_0208'; CharSetWidth: 2; CodePage: 20932; AllowReverseLookup: true),
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(CharsetID: 6; CharSetName: 'EUCJ_0208'; CharSetWidth: 2; CodePage: 20932; AllowReverseLookup: true),
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(CharsetID: 7; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: true),
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(CharsetID: 8; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: true),
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(CharsetID: 9; CharSetName: 'DOS737'; CharSetWidth: 1; CodePage: 737; AllowReverseLookup: true),
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(CharsetID: 10; CharSetName: 'DOS437'; CharSetWidth: 1; CodePage: 437; AllowReverseLookup: true),
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(CharsetID: 11; CharSetName: 'DOS850'; CharSetWidth: 1; CodePage: 850; AllowReverseLookup: true),
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(CharsetID: 12; CharSetName: 'DOS865'; CharSetWidth: 1; CodePage: 865; AllowReverseLookup: true),
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(CharsetID: 13; CharSetName: 'DOS860'; CharSetWidth: 1; CodePage: 860; AllowReverseLookup: true),
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(CharsetID: 14; CharSetName: 'DOS863'; CharSetWidth: 1; CodePage: 863; AllowReverseLookup: true),
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(CharsetID: 15; CharSetName: 'DOS775'; CharSetWidth: 1; CodePage: 775; AllowReverseLookup: true),
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(CharsetID: 16; CharSetName: 'DOS858'; CharSetWidth: 1; CodePage: 858; AllowReverseLookup: true),
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(CharsetID: 17; CharSetName: 'DOS862'; CharSetWidth: 1; CodePage: 862; AllowReverseLookup: true),
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(CharsetID: 18; CharSetName: 'DOS864'; CharSetWidth: 1; CodePage: 864; AllowReverseLookup: true),
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(CharsetID: 19; CharSetName: 'NEXT'; CharSetWidth: 1; CodePage: CP_NONE; AllowReverseLookup: true),
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(CharsetID: 20; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: true),
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(CharsetID: 21; CharSetName: 'ISO8859_1'; CharSetWidth: 1; CodePage: 28591; AllowReverseLookup: true),
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(CharsetID: 22; CharSetName: 'ISO8859_2'; CharSetWidth: 1; CodePage: 28592; AllowReverseLookup: true),
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(CharsetID: 23; CharSetName: 'ISO8859_3'; CharSetWidth: 1; CodePage: 28593; AllowReverseLookup: true),
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(CharsetID: 24; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
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(CharsetID: 25; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
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(CharsetID: 26; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
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(CharsetID: 27; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
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(CharsetID: 28; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
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(CharsetID: 29; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
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(CharsetID: 30; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
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(CharsetID: 31; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
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(CharsetID: 32; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
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(CharsetID: 33; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
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(CharsetID: 34; CharSetName: 'ISO8859_4'; CharSetWidth: 1; CodePage: 28594; AllowReverseLookup: true),
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(CharsetID: 35; CharSetName: 'ISO8859_5'; CharSetWidth: 1; CodePage: 28595; AllowReverseLookup: true),
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(CharsetID: 36; CharSetName: 'ISO8859_6'; CharSetWidth: 1; CodePage: 28596; AllowReverseLookup: true),
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(CharsetID: 37; CharSetName: 'ISO8859_7'; CharSetWidth: 1; CodePage: 28597; AllowReverseLookup: true),
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(CharsetID: 38; CharSetName: 'ISO8859_8'; CharSetWidth: 1; CodePage: 28598; AllowReverseLookup: true),
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(CharsetID: 39; CharSetName: 'ISO8859_9'; CharSetWidth: 1; CodePage: 28599; AllowReverseLookup: true),
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(CharsetID: 40; CharSetName: 'ISO8859_13'; CharSetWidth: 1; CodePage: 28603; AllowReverseLookup: true),
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(CharsetID: 41; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
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(CharsetID: 42; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
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(CharsetID: 43; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
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(CharsetID: 44; CharSetName: 'KSC_5601'; CharSetWidth: 2; CodePage: 949; AllowReverseLookup: true),
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(CharsetID: 45; CharSetName: 'DOS852'; CharSetWidth: 1; CodePage: 852; AllowReverseLookup: true),
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(CharsetID: 46; CharSetName: 'DOS857'; CharSetWidth: 1; CodePage: 857; AllowReverseLookup: true),
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(CharsetID: 47; CharSetName: 'DOS861'; CharSetWidth: 1; CodePage: 861; AllowReverseLookup: true),
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(CharsetID: 48; CharSetName: 'DOS866'; CharSetWidth: 1; CodePage: 866; AllowReverseLookup: true),
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(CharsetID: 49; CharSetName: 'DOS869'; CharSetWidth: 1; CodePage: 869; AllowReverseLookup: true),
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(CharsetID: 50; CharSetName: 'CYRL'; CharSetWidth: 1; CodePage: 1251; AllowReverseLookup: true),
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(CharsetID: 51; CharSetName: 'WIN1250'; CharSetWidth: 1; CodePage: 1250; AllowReverseLookup: true),
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(CharsetID: 52; CharSetName: 'WIN1251'; CharSetWidth: 1; CodePage: 1251; AllowReverseLookup: true),
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| 202 |
(CharsetID: 53; CharSetName: 'WIN1252'; CharSetWidth: 1; CodePage: 1252; AllowReverseLookup: true),
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| 203 |
(CharsetID: 54; CharSetName: 'WIN1253'; CharSetWidth: 1; CodePage: 1253; AllowReverseLookup: true),
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| 204 |
(CharsetID: 55; CharSetName: 'WIN1254'; CharSetWidth: 1; CodePage: 1254; AllowReverseLookup: true),
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| 205 |
(CharsetID: 56; CharSetName: 'BIG_5'; CharSetWidth: 2; CodePage: 950; AllowReverseLookup: true),
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| 206 |
(CharsetID: 57; CharSetName: 'GB_2312'; CharSetWidth: 2; CodePage: 936; AllowReverseLookup: true),
|
| 207 |
(CharsetID: 58; CharSetName: 'WIN1255'; CharSetWidth: 1; CodePage: 1255; AllowReverseLookup: true),
|
| 208 |
(CharsetID: 59; CharSetName: 'WIN1256'; CharSetWidth: 1; CodePage: 1256; AllowReverseLookup: true),
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| 209 |
(CharsetID: 60; CharSetName: 'WIN1257'; CharSetWidth: 1; CodePage: 1257; AllowReverseLookup: true),
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| 210 |
(CharsetID: 61; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
|
| 211 |
(CharsetID: 62; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE; AllowReverseLookup: false),
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| 212 |
(CharsetID: 63; CharSetName: 'KOI8R'; CharSetWidth: 1; CodePage: 20866; AllowReverseLookup: true),
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| 213 |
(CharsetID: 64; CharSetName: 'KOI8U'; CharSetWidth: 1; CodePage: 21866; AllowReverseLookup: true),
|
| 214 |
(CharsetID: 65; CharSetName: 'WIN1258'; CharSetWidth: 1; CodePage: 1258; AllowReverseLookup: true),
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| 215 |
(CharsetID: 66; CharSetName: 'TIS620'; CharSetWidth: 1; CodePage: 874; AllowReverseLookup: true),
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| 216 |
(CharsetID: 67; CharSetName: 'GBK'; CharSetWidth: 2; CodePage: 936; AllowReverseLookup: true),
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| 217 |
(CharsetID: 68; CharSetName: 'CP943C'; CharSetWidth: 2; CodePage: 943; AllowReverseLookup: true),
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| 218 |
(CharsetID: 69; CharSetName: 'GB18030'; CharSetWidth: 4; CodePage: 54936; AllowReverseLookup: true)
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);
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| 220 |
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| 221 |
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| 222 |
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| 223 |
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| 224 |
{ TFBAttachment }
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| 225 |
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| 226 |
procedure TFBAttachment.GetODSAndConnectionInfo;
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| 227 |
var DBInfo: IDBInformation;
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| 228 |
i: integer;
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| 229 |
Stmt: IStatement;
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| 230 |
ResultSet: IResultSet;
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| 231 |
Param: IDPBItem;
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| 232 |
begin
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| 233 |
if not IsConnected then Exit;
|
| 234 |
DBInfo := GetDBInformation([isc_info_db_id,isc_info_ods_version,isc_info_ods_minor_version,
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| 235 |
isc_info_db_SQL_Dialect]);
|
| 236 |
for i := 0 to DBInfo.GetCount - 1 do
|
| 237 |
with DBInfo[i] do
|
| 238 |
case getItemType of
|
| 239 |
isc_info_ods_minor_version:
|
| 240 |
FODSMinorVersion := getAsInteger;
|
| 241 |
isc_info_ods_version:
|
| 242 |
FODSMajorVersion := getAsInteger;
|
| 243 |
isc_info_db_SQL_Dialect:
|
| 244 |
FSQLDialect := getAsInteger;
|
| 245 |
end;
|
| 246 |
|
| 247 |
if (FODSMajorVersion > 11) or ((FODSMajorVersion = 11) and (FODSMinorVersion >= 1)) then
|
| 248 |
begin
|
| 249 |
Stmt := Prepare(StartTransaction([isc_tpb_read,isc_tpb_nowait,isc_tpb_concurrency],taCommit),
|
| 250 |
'Select MON$CHARACTER_SET_ID, MON$REMOTE_PROTOCOL From MON$ATTACHMENTS '+
|
| 251 |
'Where MON$ATTACHMENT_ID = CURRENT_CONNECTION');
|
| 252 |
ResultSet := Stmt.OpenCursor;
|
| 253 |
if ResultSet.FetchNext then
|
| 254 |
begin
|
| 255 |
FCharSetID := ResultSet[0].AsInteger;
|
| 256 |
FRemoteProtocol := ResultSet[1].AsString;
|
| 257 |
end
|
| 258 |
end
|
| 259 |
else
|
| 260 |
if DPB <> nil then
|
| 261 |
begin
|
| 262 |
Param := DPB.Find(isc_dpb_lc_ctype);
|
| 263 |
if (Param = nil) or not CharSetName2CharSetID(Param.AsString,FCharSetID) then
|
| 264 |
FCharSetID := 0;
|
| 265 |
FRemoteProtocol := '';
|
| 266 |
end
|
| 267 |
else
|
| 268 |
begin
|
| 269 |
FCharSetID := 0;
|
| 270 |
FRemoteProtocol := '';
|
| 271 |
end;
|
| 272 |
FHasDefaultCharSet := CharSetID2CodePage(FCharSetID,FCodePage) and (FCharSetID > 1);
|
| 273 |
end;
|
| 274 |
|
| 275 |
constructor TFBAttachment.Create(DatabaseName: AnsiString; DPB: IDPB;
|
| 276 |
RaiseExceptionOnConnectError: boolean);
|
| 277 |
begin
|
| 278 |
inherited Create;
|
| 279 |
FFirebirdAPI := FirebirdAPI; {Keep reference to interface}
|
| 280 |
FSQLDialect := 3;
|
| 281 |
FDatabaseName := DatabaseName;
|
| 282 |
FDPB := DPB;
|
| 283 |
SetLength(FUserCharSetMap,0);
|
| 284 |
FRaiseExceptionOnConnectError := RaiseExceptionOnConnectError;
|
| 285 |
FODSMajorVersion := 0;
|
| 286 |
FODSMinorVersion := 0;
|
| 287 |
end;
|
| 288 |
|
| 289 |
function TFBAttachment.GenerateCreateDatabaseSQL(DatabaseName: AnsiString; aDPB: IDPB): AnsiString;
|
| 290 |
var CreateParams: AnsiString;
|
| 291 |
DPBItem: IDPBItem;
|
| 292 |
begin
|
| 293 |
CreateParams := '';
|
| 294 |
|
| 295 |
if aDPB <> nil then
|
| 296 |
begin
|
| 297 |
DPBItem := aDPB.Find(isc_dpb_user_name);
|
| 298 |
if DPBItem <> nil then
|
| 299 |
CreateParams := CreateParams + ' USER ''' + DPBItem.AsString + '''';
|
| 300 |
|
| 301 |
DPBItem := aDPB.Find(isc_dpb_password);
|
| 302 |
if DPBItem <> nil then
|
| 303 |
CreateParams := CreateParams + ' Password ''' + DPBItem.AsString + '''';
|
| 304 |
|
| 305 |
DPBItem := aDPB.Find(isc_dpb_page_size);
|
| 306 |
if DPBItem <> nil then
|
| 307 |
CreateParams := CreateParams + ' PAGE_SIZE ' + DPBItem.AsString;
|
| 308 |
|
| 309 |
DPBItem := aDPB.Find(isc_dpb_lc_ctype);
|
| 310 |
if DPBItem <> nil then
|
| 311 |
CreateParams := CreateParams + ' DEFAULT CHARACTER SET ' + DPBItem.AsString;
|
| 312 |
|
| 313 |
DPBItem := aDPB.Find(isc_dpb_sql_dialect);
|
| 314 |
if DPBItem <> nil then
|
| 315 |
FSQLDialect := DPBItem.AsInteger;
|
| 316 |
end;
|
| 317 |
|
| 318 |
Result := 'CREATE DATABASE ''' + DatabaseName + ''' ' + CreateParams; {do not localize}
|
| 319 |
end;
|
| 320 |
|
| 321 |
procedure TFBAttachment.EndAllTransactions;
|
| 322 |
var i: integer;
|
| 323 |
intf: TInterfacedObject;
|
| 324 |
begin
|
| 325 |
for i := 0 to InterfaceCount - 1 do
|
| 326 |
begin
|
| 327 |
intf := GetInterface(i);
|
| 328 |
if (intf <> nil) and (intf is TFBTransaction) then
|
| 329 |
TFBTransaction(intf).DoDefaultTransactionEnd(true);
|
| 330 |
end;
|
| 331 |
end;
|
| 332 |
|
| 333 |
{$IFDEF HASREQEX}
|
| 334 |
procedure TFBAttachment.DPBFromCreateSQL(CreateSQL: AnsiString);
|
| 335 |
var RegexObj: TRegExpr;
|
| 336 |
begin
|
| 337 |
FDPB := FFirebirdAPI.AllocateDPB;
|
| 338 |
RegexObj := TRegExpr.Create;
|
| 339 |
try
|
| 340 |
{extact database file spec}
|
| 341 |
RegexObj.ModifierG := false; {turn off greedy matches}
|
| 342 |
RegexObj.ModifierI := true; {case insensitive match}
|
| 343 |
RegexObj.Expression := '^ *CREATE +(DATABASE|SCHEMA) +''.*'' +USER +''(.+)'' PASSWORD +''(.+)''';
|
| 344 |
if RegexObj.Exec(CreateSQL) then
|
| 345 |
begin
|
| 346 |
DPB.Add(isc_dpb_user_name).AsString := system.copy(CreateSQL,RegexObj.MatchPos[2],RegexObj.MatchLen[2]);
|
| 347 |
DPB.Add(isc_dpb_password).AsString := system.copy(CreateSQL,RegexObj.MatchPos[3],RegexObj.MatchLen[3]);
|
| 348 |
end
|
| 349 |
else
|
| 350 |
begin
|
| 351 |
RegexObj.Expression := '^ *CREATE +(DATABASE|SCHEMA) +(''.*'') +USER +''(.+)''';
|
| 352 |
if RegexObj.Exec(CreateSQL) then
|
| 353 |
DPB.Add(isc_dpb_user_name).AsString := system.copy(CreateSQL,RegexObj.MatchPos[2],RegexObj.MatchLen[2]);
|
| 354 |
end;
|
| 355 |
finally
|
| 356 |
RegexObj.Free;
|
| 357 |
end;
|
| 358 |
if FCharSetID > 0 then
|
| 359 |
DPB.Add(isc_dpb_lc_ctype).AsString := GetCharSetName(FCharSetID);
|
| 360 |
DPB.Add(isc_dpb_set_db_SQL_dialect).setAsByte(FSQLDialect);
|
| 361 |
end;
|
| 362 |
{$ELSE}
|
| 363 |
procedure TFBAttachment.DPBFromCreateSQL(CreateSQL: AnsiString);
|
| 364 |
begin
|
| 365 |
FDPB := FFirebirdAPI.AllocateDPB;
|
| 366 |
if FCharSetID > 0 then
|
| 367 |
DPB.Add(isc_dpb_lc_ctype).AsString := GetCharSetName(FCharSetID);
|
| 368 |
DPB.Add(isc_dpb_set_db_SQL_dialect).setAsByte(FSQLDialect);
|
| 369 |
end;
|
| 370 |
{$ENDIF}
|
| 371 |
|
| 372 |
procedure TFBAttachment.SetParameters(SQLParams: ISQLParams;
|
| 373 |
params: array of const);
|
| 374 |
var i: integer;
|
| 375 |
begin
|
| 376 |
if SQLParams.Count <> Length(params) then
|
| 377 |
IBError(ibxeInvalidParamCount,[SQLParams.Count,Length(params)]);
|
| 378 |
|
| 379 |
for i := 0 to High(params) do
|
| 380 |
begin
|
| 381 |
case params[i].vtype of
|
| 382 |
vtinteger :
|
| 383 |
SQLParams[i].AsInteger := params[i].vinteger;
|
| 384 |
vtInt64:
|
| 385 |
SQLParams[i].AsInt64 := params[i].VInt64^;
|
| 386 |
{$IF declared (vtQWord)}
|
| 387 |
vtQWord:
|
| 388 |
SQLParams[i].AsInt64 := params[i].VQWord^;
|
| 389 |
{$IFEND}
|
| 390 |
vtboolean :
|
| 391 |
SQLParams[i].AsBoolean := params[i].vboolean;
|
| 392 |
vtchar :
|
| 393 |
SQLParams[i].AsString := params[i].vchar;
|
| 394 |
vtextended :
|
| 395 |
SQLParams[i].AsDouble := params[i].VExtended^;
|
| 396 |
vtCurrency:
|
| 397 |
SQLParams[i].AsDouble := params[i].VCurrency^;
|
| 398 |
vtString :
|
| 399 |
SQLParams[i].AsString := strpas(PChar(params[i].VString));
|
| 400 |
vtPChar :
|
| 401 |
SQLParams[i].AsString := strpas(params[i].VPChar);
|
| 402 |
vtAnsiString :
|
| 403 |
SQLParams[i].AsString := strpas(PAnsiChar(params[i].VAnsiString));
|
| 404 |
vtVariant:
|
| 405 |
SQLParams[i].AsVariant := params[i].VVariant^;
|
| 406 |
vtWideChar:
|
| 407 |
SQLParams[i].AsString := UTF8Encode(WideCharLenToString(@params[i].VWideChar,1));
|
| 408 |
vtPWideChar:
|
| 409 |
SQLParams[i].AsString := UTF8Encode(strpas(PWideChar(params[i].VPWideChar)));
|
| 410 |
vtWideString:
|
| 411 |
SQLParams[i].AsString := UTF8Encode(strpas(PWideChar(params[i].VWideString)));
|
| 412 |
vtUnicodeString:
|
| 413 |
SQLParams[i].AsString := UTF8Encode(strpas(PWideChar(params[i].VUnicodeString)));
|
| 414 |
else
|
| 415 |
IBError(ibxeInvalidVariantType,[nil]);
|
| 416 |
end;
|
| 417 |
end;
|
| 418 |
end;
|
| 419 |
|
| 420 |
destructor TFBAttachment.Destroy;
|
| 421 |
begin
|
| 422 |
Disconnect(true);
|
| 423 |
inherited Destroy;
|
| 424 |
end;
|
| 425 |
|
| 426 |
function TFBAttachment.getDPB: IDPB;
|
| 427 |
begin
|
| 428 |
Result := FDPB;
|
| 429 |
end;
|
| 430 |
|
| 431 |
function TFBAttachment.AllocateBPB: IBPB;
|
| 432 |
begin
|
| 433 |
Result := TBPB.Create;
|
| 434 |
end;
|
| 435 |
|
| 436 |
procedure TFBAttachment.ExecImmediate(TPB: array of byte; sql: AnsiString;
|
| 437 |
aSQLDialect: integer);
|
| 438 |
begin
|
| 439 |
ExecImmediate(StartTransaction(TPB,taCommit),sql,aSQLDialect);
|
| 440 |
end;
|
| 441 |
|
| 442 |
procedure TFBAttachment.ExecImmediate(transaction: ITransaction; sql: AnsiString);
|
| 443 |
begin
|
| 444 |
ExecImmediate(transaction,sql,FSQLDialect);
|
| 445 |
end;
|
| 446 |
|
| 447 |
procedure TFBAttachment.ExecImmediate(TPB: array of byte; sql: AnsiString);
|
| 448 |
begin
|
| 449 |
ExecImmediate(StartTransaction(TPB,taCommit),sql,FSQLDialect);
|
| 450 |
end;
|
| 451 |
|
| 452 |
function TFBAttachment.ExecuteSQL(TPB: array of byte; sql: AnsiString;
|
| 453 |
SQLDialect: integer; params: array of const): IResults;
|
| 454 |
begin
|
| 455 |
Result := ExecuteSQL(StartTransaction(TPB,taCommit),sql,SQLDialect,params);
|
| 456 |
end;
|
| 457 |
|
| 458 |
function TFBAttachment.ExecuteSQL(transaction: ITransaction; sql: AnsiString;
|
| 459 |
SQLDialect: integer; params: array of const): IResults;
|
| 460 |
begin
|
| 461 |
with Prepare(transaction,sql,SQLDialect) do
|
| 462 |
begin
|
| 463 |
SetParameters(SQLParams,params);
|
| 464 |
Result := Execute;
|
| 465 |
end;
|
| 466 |
end;
|
| 467 |
|
| 468 |
function TFBAttachment.ExecuteSQL(TPB: array of byte; sql: AnsiString;
|
| 469 |
params: array of const): IResults;
|
| 470 |
begin
|
| 471 |
Result := ExecuteSQL(StartTransaction(TPB,taCommit),sql,params);
|
| 472 |
end;
|
| 473 |
|
| 474 |
function TFBAttachment.ExecuteSQL(transaction: ITransaction; sql: AnsiString;
|
| 475 |
params: array of const): IResults;
|
| 476 |
begin
|
| 477 |
with Prepare(transaction,sql,FSQLDialect) do
|
| 478 |
begin
|
| 479 |
SetParameters(SQLParams,params);
|
| 480 |
Result := Execute;
|
| 481 |
end;
|
| 482 |
end;
|
| 483 |
|
| 484 |
function TFBAttachment.OpenCursor(transaction: ITransaction; sql: AnsiString;
|
| 485 |
aSQLDialect: integer): IResultSet;
|
| 486 |
begin
|
| 487 |
Result := OpenCursor(transaction,sql,aSQLDialect,[]);
|
| 488 |
end;
|
| 489 |
|
| 490 |
function TFBAttachment.OpenCursor(transaction: ITransaction; sql: AnsiString;
|
| 491 |
aSQLDialect: integer; params: array of const): IResultSet;
|
| 492 |
var Statement: IStatement;
|
| 493 |
begin
|
| 494 |
CheckHandle;
|
| 495 |
Statement := Prepare(transaction,sql,aSQLDialect);
|
| 496 |
SetParameters(Statement.SQLParams,params);
|
| 497 |
Result := Statement.OpenCursor;
|
| 498 |
end;
|
| 499 |
|
| 500 |
function TFBAttachment.OpenCursor(transaction: ITransaction; sql: AnsiString
|
| 501 |
): IResultSet;
|
| 502 |
begin
|
| 503 |
Result := OpenCursor(transaction,sql,FSQLDialect,[]);
|
| 504 |
end;
|
| 505 |
|
| 506 |
function TFBAttachment.OpenCursor(transaction: ITransaction; sql: AnsiString;
|
| 507 |
params: array of const): IResultSet;
|
| 508 |
begin
|
| 509 |
Result := OpenCursor(transaction,sql,FSQLDialect,params);
|
| 510 |
end;
|
| 511 |
|
| 512 |
function TFBAttachment.OpenCursorAtStart(transaction: ITransaction;
|
| 513 |
sql: AnsiString; aSQLDialect: integer): IResultSet;
|
| 514 |
begin
|
| 515 |
Result := OpenCursor(transaction,sql,aSQLDialect,[]);
|
| 516 |
Result.FetchNext;
|
| 517 |
end;
|
| 518 |
|
| 519 |
function TFBAttachment.OpenCursorAtStart(transaction: ITransaction;
|
| 520 |
sql: AnsiString; aSQLDialect: integer; params: array of const): IResultSet;
|
| 521 |
begin
|
| 522 |
Result := OpenCursor(transaction,sql,aSQLDialect,params);
|
| 523 |
Result.FetchNext;
|
| 524 |
end;
|
| 525 |
|
| 526 |
function TFBAttachment.OpenCursorAtStart(transaction: ITransaction; sql: AnsiString
|
| 527 |
): IResultSet;
|
| 528 |
begin
|
| 529 |
Result := OpenCursorAtStart(transaction,sql,FSQLDialect,[]);
|
| 530 |
end;
|
| 531 |
|
| 532 |
function TFBAttachment.OpenCursorAtStart(transaction: ITransaction;
|
| 533 |
sql: AnsiString; params: array of const): IResultSet;
|
| 534 |
begin
|
| 535 |
Result := OpenCursorAtStart(transaction,sql,FSQLDialect,params);
|
| 536 |
end;
|
| 537 |
|
| 538 |
function TFBAttachment.OpenCursorAtStart(sql: AnsiString): IResultSet;
|
| 539 |
begin
|
| 540 |
Result := OpenCursorAtStart(sql,[]);
|
| 541 |
end;
|
| 542 |
|
| 543 |
function TFBAttachment.OpenCursorAtStart(sql: AnsiString;
|
| 544 |
params: array of const): IResultSet;
|
| 545 |
begin
|
| 546 |
Result := OpenCursorAtStart(StartTransaction([isc_tpb_read,isc_tpb_wait,isc_tpb_concurrency],taCommit),sql,FSQLDialect,params);
|
| 547 |
end;
|
| 548 |
|
| 549 |
function TFBAttachment.Prepare(transaction: ITransaction; sql: AnsiString
|
| 550 |
): IStatement;
|
| 551 |
begin
|
| 552 |
Result := Prepare(transaction,sql,FSQLDialect);
|
| 553 |
end;
|
| 554 |
|
| 555 |
function TFBAttachment.PrepareWithNamedParameters(transaction: ITransaction;
|
| 556 |
sql: AnsiString; GenerateParamNames: boolean): IStatement;
|
| 557 |
begin
|
| 558 |
Result := PrepareWithNamedParameters(transaction,sql,FSQLDialect,GenerateParamNames);
|
| 559 |
end;
|
| 560 |
|
| 561 |
function TFBAttachment.GetEventHandler(Event: AnsiString): IEvents;
|
| 562 |
var S: TStringList;
|
| 563 |
begin
|
| 564 |
S := TStringList.Create;
|
| 565 |
try
|
| 566 |
S.Add(Event);
|
| 567 |
Result := GetEventHandler(S);
|
| 568 |
finally
|
| 569 |
S.Free;
|
| 570 |
end;
|
| 571 |
end;
|
| 572 |
|
| 573 |
function TFBAttachment.GetSQLDialect: integer;
|
| 574 |
begin
|
| 575 |
Result := FSQLDialect;
|
| 576 |
end;
|
| 577 |
|
| 578 |
function TFBAttachment.OpenBlob(transaction: ITransaction; Field: ISQLData;
|
| 579 |
BPB: IBPB): IBlob;
|
| 580 |
begin
|
| 581 |
Result := OpenBlob(Transaction,Field.GetBlobMetadata, Field.AsQuad,BPB);
|
| 582 |
end;
|
| 583 |
|
| 584 |
function TFBAttachment.GetConnectString: AnsiString;
|
| 585 |
begin
|
| 586 |
Result := FDatabaseName;
|
| 587 |
end;
|
| 588 |
|
| 589 |
function TFBAttachment.GetRemoteProtocol: AnsiString;
|
| 590 |
begin
|
| 591 |
Result := FRemoteProtocol;
|
| 592 |
end;
|
| 593 |
|
| 594 |
function TFBAttachment.GetODSMajorVersion: integer;
|
| 595 |
begin
|
| 596 |
Result := FODSMajorVersion;
|
| 597 |
end;
|
| 598 |
|
| 599 |
function TFBAttachment.GetODSMinorVersion: integer;
|
| 600 |
begin
|
| 601 |
Result := FODSMinorVersion;
|
| 602 |
end;
|
| 603 |
|
| 604 |
function TFBAttachment.HasDefaultCharSet: boolean;
|
| 605 |
begin
|
| 606 |
Result := FHasDefaultCharSet
|
| 607 |
end;
|
| 608 |
|
| 609 |
function TFBAttachment.GetDefaultCharSetID: integer;
|
| 610 |
begin
|
| 611 |
Result := FCharsetID;
|
| 612 |
end;
|
| 613 |
|
| 614 |
function TFBAttachment.GetCharsetName(CharSetID: integer): AnsiString;
|
| 615 |
var i: integer;
|
| 616 |
begin
|
| 617 |
Result := '';
|
| 618 |
if (CharSetID >= Low(CharSetMap)) and (CharSetID <= High(CharSetMap)) and
|
| 619 |
(CharSetMap[CharSetID].CharSetID = CharSetID) then
|
| 620 |
begin
|
| 621 |
Result := CharSetMap[CharSetID].CharSetName;
|
| 622 |
Exit;
|
| 623 |
end;
|
| 624 |
|
| 625 |
for i := 0 to Length(FUserCharSetMap) - 1 do
|
| 626 |
if FUserCharSetMap[i].CharSetID = CharSetID then
|
| 627 |
begin
|
| 628 |
Result := FUserCharSetMap[i].CharSetName;
|
| 629 |
Exit;
|
| 630 |
end;
|
| 631 |
end;
|
| 632 |
|
| 633 |
function TFBAttachment.CharSetID2CodePage(CharSetID: integer;
|
| 634 |
var CodePage: TSystemCodePage): boolean;
|
| 635 |
var i: integer;
|
| 636 |
begin
|
| 637 |
Result := (CharSetID >= Low(CharSetMap)) and (CharSetID <= High(CharSetMap))
|
| 638 |
and (CharSetMap[CharSetID].CharSetID = CharSetID);
|
| 639 |
if Result then
|
| 640 |
begin
|
| 641 |
CodePage := CharSetMap[CharSetID].CodePage;
|
| 642 |
Result := true;
|
| 643 |
Exit;
|
| 644 |
end;
|
| 645 |
|
| 646 |
for i := 0 to Length(FUserCharSetMap) - 1 do
|
| 647 |
if FUserCharSetMap[i].CharSetID = CharSetID then
|
| 648 |
begin
|
| 649 |
CodePage := FUserCharSetMap[i].CodePage;
|
| 650 |
Result := true;
|
| 651 |
Exit;
|
| 652 |
end;
|
| 653 |
end;
|
| 654 |
|
| 655 |
function TFBAttachment.CodePage2CharSetID(CodePage: TSystemCodePage;
|
| 656 |
var CharSetID: integer): boolean;
|
| 657 |
var i: integer;
|
| 658 |
begin
|
| 659 |
Result := false;
|
| 660 |
for i := Low(CharSetMap) to High(CharSetMap) do
|
| 661 |
if (CharSetMap[i].AllowReverseLookup) and (CharSetMap[i].CodePage = CodePage) then
|
| 662 |
begin
|
| 663 |
CharSetID := CharSetMap[i].CharSetID;
|
| 664 |
Result := true;
|
| 665 |
Exit;
|
| 666 |
end;
|
| 667 |
|
| 668 |
for i := 0 to Length(FUserCharSetMap) - 1 do
|
| 669 |
if (FUserCharSetMap[i].AllowReverseLookup) and (FUserCharSetMap[i].CodePage = CodePage) then
|
| 670 |
begin
|
| 671 |
CharSetID := FUserCharSetMap[i].CharSetID;
|
| 672 |
Result := true;
|
| 673 |
Exit;
|
| 674 |
end;
|
| 675 |
end;
|
| 676 |
|
| 677 |
function TFBAttachment.CharSetName2CharSetID(CharSetName: AnsiString;
|
| 678 |
var CharSetID: integer): boolean;
|
| 679 |
var i: integer;
|
| 680 |
begin
|
| 681 |
Result := false;
|
| 682 |
for i := Low(CharSetMap) to High(CharSetMap) do
|
| 683 |
if AnsiCompareStr(CharSetMap[i].CharSetName, CharSetName) = 0 then
|
| 684 |
begin
|
| 685 |
CharSetID := CharSetMap[i].CharSetID;
|
| 686 |
Result := true;
|
| 687 |
Exit;
|
| 688 |
end;
|
| 689 |
|
| 690 |
for i := 0 to Length(FUserCharSetMap) - 1 do
|
| 691 |
if AnsiCompareStr(FUserCharSetMap[i].CharSetName, CharSetName) = 0 then
|
| 692 |
begin
|
| 693 |
CharSetID := FUserCharSetMap[i].CharSetID;
|
| 694 |
Result := true;
|
| 695 |
Exit;
|
| 696 |
end;
|
| 697 |
end;
|
| 698 |
|
| 699 |
function TFBAttachment.CharSetWidth(CharSetID: integer; var Width: integer
|
| 700 |
): boolean;
|
| 701 |
var i: integer;
|
| 702 |
begin
|
| 703 |
Result := (CharSetID >= Low(CharSetMap)) and (CharSetID <= High(CharSetMap))
|
| 704 |
and (CharSetMap[CharSetID].CharSetID = CharSetID);
|
| 705 |
if Result then
|
| 706 |
begin
|
| 707 |
Width := CharSetMap[CharSetID].CharSetWidth;
|
| 708 |
Result := true;
|
| 709 |
Exit;
|
| 710 |
end;
|
| 711 |
|
| 712 |
for i := 0 to Length(FUserCharSetMap) - 1 do
|
| 713 |
if FUserCharSetMap[i].CharSetID = CharSetID then
|
| 714 |
begin
|
| 715 |
Width := FUserCharSetMap[i].CharSetWidth;
|
| 716 |
Result := true;
|
| 717 |
Exit;
|
| 718 |
end;
|
| 719 |
end;
|
| 720 |
|
| 721 |
const
|
| 722 |
sqlLookupCharSet = 'Select RDB$CHARACTER_SET_ID, RDB$BYTES_PER_CHARACTER From RDB$CHARACTER_SETS '+
|
| 723 |
'Where RDB$SYSTEM_FLAG = 0 and RDB$CHARACTER_SET_NAME = UPPER(?)';
|
| 724 |
|
| 725 |
procedure TFBAttachment.RegisterCharSet(CharSetName: AnsiString;
|
| 726 |
CodePage: TSystemCodePage; AllowReverseLookup: boolean; out CharSetID: integer
|
| 727 |
);
|
| 728 |
var CharSets: IResultSet;
|
| 729 |
idx: integer;
|
| 730 |
begin
|
| 731 |
if CharSetName2CharSetID(CharSetName,CharSetID) then
|
| 732 |
IBError(ibxeCharacterSetExists,[CharSetName]);
|
| 733 |
|
| 734 |
CharSets := OpenCursorAtStart(sqlLookupCharSet,[CharSetName]);
|
| 735 |
if CharSets.IsEof then
|
| 736 |
IBError(ibxeUnknownUserCharSet,[CharSetName]);
|
| 737 |
|
| 738 |
idx := Length(FUserCharSetMap);
|
| 739 |
SetLength(FUserCharSetMap,idx+1);
|
| 740 |
FUserCharSetMap[idx].AllowReverseLookup := AllowReverseLookup;
|
| 741 |
FUserCharSetMap[idx].CharSetID := CharSets[0].AsInteger;
|
| 742 |
FUserCharSetMap[idx].CharSetName := AnsiUpperCase(CharSetName);
|
| 743 |
FUserCharSetMap[idx].CharSetWidth := CharSets[1].AsInteger;
|
| 744 |
FUserCharSetMap[idx].CodePage := CodePage;
|
| 745 |
CharSetID := CharSets[0].AsInteger;
|
| 746 |
end;
|
| 747 |
|
| 748 |
end.
|
| 749 |
|
