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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. Although predominantly
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* a new development they include source code taken from IBX and may be
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* considered a derived product. This software thus also includes the copyright
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* notice and license conditions from IBX.
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*
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* Except for those parts dervied from IBX, contents of this file are subject
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* to the Initial Developer's Public License Version 1.0 (the "License"); you
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* may not use this file except in compliance with the License. You may obtain a
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* copy 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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{************************************************************************}
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{ }
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{ Borland Delphi Visual Component Library }
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{ InterBase Express core components }
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{ }
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{ Copyright (c) 1998-2000 Inprise Corporation }
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{ }
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{ InterBase Express is based in part on the product }
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{ Free IB Components, written by Gregory H. Deatz for }
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{ Hoagland, Longo, Moran, Dunst & Doukas Company. }
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{ Free IB Components is used under license. }
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{ }
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{ The contents of this file are subject to the InterBase }
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{ Public License Version 1.0 (the "License"); you may not }
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{ use this file except in compliance with the License. You }
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{ may obtain a copy of the License at http://www.Inprise.com/IPL.html }
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{ Software distributed under the License is distributed on }
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{ an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either }
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{ express or implied. See the License for the specific language }
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{ governing rights and limitations under the License. }
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{ The Original Code was created by InterBase Software Corporation }
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{ and its successors. }
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{ Portions created by Inprise Corporation are Copyright (C) Inprise }
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{ Corporation. All Rights Reserved. }
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{ Contributor(s): Jeff Overcash }
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{ }
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{ IBX For Lazarus (Firebird Express) }
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{ Contributor: Tony Whyman, MWA Software http://www.mwasoftware.co.uk }
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{ Portions created by MWA Software are copyright McCallum Whyman }
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{ Associates Ltd 2011 - 2015 }
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{ }
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{************************************************************************}
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unit IB;
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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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{$mode delphi}
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{$codepage UTF8}
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{$interfaces COM}
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{$IF defined(FPC) and (FPC_FULLVERSION < 30000) }
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{$ERROR FPC Version 3.0.0 or later is required}
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{$IFEND}
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{$ENDIF}
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{$IFNDEF LEGACYFIREBIRDAPIONLY}
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{$DEFINE USEFIREBIRD3API}
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{$ENDIF}
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{$IFNDEF FIREBIRD3APIONLY}
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{$DEFINE USELEGACYFIREBIRDAPI}
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{$ENDIF}
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{
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This unit defines the interfaces used to provide the Pascal Language
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bindings for the Firebird API. These are COM style references counted interfaces
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and are automatically freed when they go out of scope.
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The interface definition is independent of the Firebird API version and two
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implementations are provided. One is for the legacy API (2.5 and earlier) and the
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other is for the new object orientated API (3.0 and later). By default, both are
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available with the 3.0 API used if it is available. Otherwise the 2.5 API is used.
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The above two defines can be used to force only one implementation by undefining
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the symbol for the unwanted API.
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Note that the FirebirdAPI function defined below is used for initial access to
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the language bindings.
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The goals of these Pascal Langauge bindings are to provide:
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1. A set of reference counted interfaces providing complete access to the Firebird API.
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2. Application Independence from the Firebird API version.
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3. All data access through strongly typed variables and functions with no need for
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the end user to manipulate untyped data in buffers such as the legacy API SQLDA
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or the Firebird 3.0 message buffer.
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4. A stable platform for LCL Packages (e.g. IBX) that implement the TDataSet model
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with independence from the Firebird API version.
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5. Straightforward progammatic access to the Firebird API from Pascal programs.
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6. FPC and Delphi Support.
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String Types
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============
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From FPC 3.0 onwards, ANSISTRINGs include the codepage in their definition. All
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strings used by the interface are sensitive to the codepage in that the codepage
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for all strings returned by an interface is consistent with the SQL Character set
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used for the database connection. Input strings will be transliterated, where possible
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and if necessary, to the codepage consistent with the character set used for
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the database connection.
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}
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interface
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uses
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Classes,
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{$IFDEF WINDOWS}Windows, {$ENDIF}
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{$IFDEF FPC} Dynlibs, {$ENDIF}
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SysUtils, DB, FBMessages, IBExternals, FmtBcd;
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const
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{Interface version information}
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FBIntf_Major = 1;
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FBIntf_Minor = 4;
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FBIntf_Release = 0;
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FBIntf_Version = '1.4.0';
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const
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{DPB, TPB and SPB Parameter Block Name Prefixes}
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DPBPrefix = 'isc_dpb_';
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TPBPrefix = 'isc_tpb_';
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const
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{Time Zone ID constraint}
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MaxOffsetTimeZoneID = 2879; {lower values represent a time zone offset between
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-23:59 and 23:59. Higher values are keys to the
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Time Zone database.}
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TimeZoneID_GMT = 23*minsPerHour + 59;
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decimillisecondsPerSecond = 10000;
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TimeZoneDisplacementDelta = 60*23 + 59; {23:59 in minutes}
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{These include files are converted from the 'C' originals in the Firebird API
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and define the various constants used by the API}
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{$I 'include/consts_pub.inc'}
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{$I 'include/dyn_consts.inc'}
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{$I 'include/inf_pub.inc'}
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{$I 'include/configkeys.inc'}
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{$I 'include/blr.inc'}
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{The following constants define the values return by calls to the GetSQLType
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methods provided by several of the interfaces defined below.}
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(*********************)
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(** SQL definitions **)
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(*********************)
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SQL_VARYING = 448;
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SQL_TEXT = 452;
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SQL_DOUBLE = 480;
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SQL_FLOAT = 482;
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SQL_LONG = 496;
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SQL_SHORT = 500;
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SQL_TIMESTAMP = 510;
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SQL_BLOB = 520;
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SQL_D_FLOAT = 530;
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SQL_ARRAY = 540;
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SQL_QUAD = 550;
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SQL_TYPE_TIME = 560;
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SQL_TYPE_DATE = 570;
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SQL_INT64 = 580;
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SQL_TIMESTAMP_TZ_EX = 32748;
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SQL_TIME_TZ_EX = 32750;
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SQL_INT128 = 32752;
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SQL_BOOLEAN = 32764;
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SQL_TIMESTAMP_TZ = 32754;
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SQL_TIME_TZ = 32756;
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SQL_DEC_FIXED = 32758; {FB4 Beta 1 only}
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SQL_DEC16 = 32760;
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SQL_DEC34 = 32762;
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SQL_NULL = 32766;
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SQL_DATE = SQL_TIMESTAMP;
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type
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TGDS_QUAD = record
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gds_quad_high : ISC_LONG;
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gds_quad_low : UISC_LONG;
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end;
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TGDS__QUAD = TGDS_QUAD;
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TISC_QUAD = TGDS_QUAD;
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PGDS_QUAD = ^TGDS_QUAD;
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PGDS__QUAD = ^TGDS__QUAD;
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PISC_QUAD = ^TISC_QUAD;
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{$IFNDEF FPC}
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{Delphi missing definitions}
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type
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TLibHandle = THandle;
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const
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NilHandle = 0;
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DirectorySeparator = '\';
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{Delphi only seems to define CP_UTF8 and CP_UTF16}
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const
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CP_ACP = 0; // default to ANSI code page
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CP_OEMCP = 1; // default to OEM (console) code page
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CP_UTF16BE = 1201; // unicodeFFFE
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CP_UTF7 = 65000; // utf-7
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CP_ASCII = 20127; // us-ascii
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CP_NONE = $FFFF; // rawbytestring encoding
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{$ENDIF}
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type
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{$IF not declared(TSystemCodePage)}
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TSystemCodePage = word; {not defined in Delphi}
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{$IFEND}
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TIBSQLStatementTypes =
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(SQLUnknown, SQLSelect, SQLInsert,
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SQLUpdate, SQLDelete, SQLDDL,
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SQLGetSegment, SQLPutSegment,
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SQLExecProcedure, SQLStartTransaction,
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SQLCommit, SQLRollback,
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SQLSelectForUpdate, SQLSetGenerator,
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SQLSavePoint);
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TFBStatusCode = cardinal;
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TByteArray = array of byte;
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TFBTimeZoneID = ISC_USHORT;
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IFirebirdAPI = interface;
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IAttachment = interface;
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ITransaction = interface;
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IStatement = interface;
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{The IFBNumeric interface provides a managed type for Fixed Point integers
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used to hold Firebird Numeric(m,n) types}
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IFBNumeric = interface
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['{8bdccfe9-d552-446b-bd82-844ca264455d}']
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function getRawValue: Int64;
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function getScale: integer;
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function AdjustScaleTo(aNewScale: integer): IFBNumeric;
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function getAsString: AnsiString;
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function getAsDouble: double;
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function getAsBCD: TBCD;
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function getAsInt64: Int64; {scaled}
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function getAsInteger: integer; {scaled - may be truncated}
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function getAsSmallInt: SmallInt; {scaled - may be truncated}
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function getAsCurrency: Currency;
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end;
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{The IParameterBlock interface provides the template for all parameter
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block interfaces}
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IParameterBlock<_IItem> = interface
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function getCount: integer;
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function Add(ParamType: byte): _IItem;
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function getItems(index: integer): _IItem;
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function Find(ParamType: byte): _IItem;
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procedure PrintBuf; {can be used to print buffer in hex for debugging}
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property Count: integer read getCount;
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property Items[index: integer]: _IItem read getItems; default;
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end;
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IParameterBlockWithTypeNames<_IItem> = interface(IParameterBlock<_IItem>)
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function AddByTypeName(ParamTypeName: AnsiString): _IItem;
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function GetDPBParamTypeName(ParamType: byte): Ansistring; deprecated 'Use Get ParamTypeName';
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function GetParamTypeName(ParamType: byte): Ansistring;
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end;
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{IParameterBlockItem is not used on its own but instead provides a base type for
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different parameter block items }
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IParameterBlockItem = interface
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['{53b23f7b-abda-46a5-9aa5-07bd5e723266}']
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function getParamType: byte;
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function getAsInteger: integer;
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function getAsString: AnsiString;
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function getAsByte: byte;
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procedure setAsString(aValue: AnsiString);
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procedure setAsByte(aValue: byte);
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procedure SetAsInteger(aValue: integer);
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property AsString: AnsiString read getAsString write setAsString;
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property AsByte: byte read getAsByte write setAsByte;
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property AsInteger: integer read getAsInteger write SetAsInteger;
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end;
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IParameterBlockItemWithTypeName = interface(IParameterBlockItem)
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function getParamTypeName: AnsiString;
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end;
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{The IStatus interface provides access to error information, if any, returned
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by the last API call. It can also be used to customise the error message
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returned by a database engine exception - see EIBInterbaseError.
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This interface can be accessed from IFirebirdAPI.
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}
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TIBDataBaseErrorMessage = (ShowSQLCode,
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ShowIBMessage,
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ShowSQLMessage);
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TIBDataBaseErrorMessages = set of TIBDataBaseErrorMessage;
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TStatusCode = long;
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IStatus = interface
|
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['{34167722-af38-4831-b08a-93162d58ede3}']
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function InErrorState: boolean;
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| 326 |
function GetIBErrorCode: TStatusCode;
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function Getsqlcode: TStatusCode;
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| 328 |
function GetMessage: AnsiString;
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| 329 |
function CheckStatusVector(ErrorCodes: array of TFBStatusCode): Boolean;
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| 330 |
function GetIBDataBaseErrorMessages: TIBDataBaseErrorMessages;
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function Clone: IStatus;
|
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procedure SetIBDataBaseErrorMessages(Value: TIBDataBaseErrorMessages);
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end;
|
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{ The array metadata interface provides access to the metadata used to describe
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an array column in a Firebird table.
|
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}
|
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TArrayBound = record
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UpperBound: short;
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LowerBound: short;
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end;
|
| 343 |
TArrayBounds = array of TArrayBound;
|
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|
| 345 |
IArrayMetaData = interface
|
| 346 |
['{7dd0aea4-59af-4c2a-b958-565d5025c489}']
|
| 347 |
function GetSQLType: cardinal;
|
| 348 |
function GetSQLTypeName: AnsiString;
|
| 349 |
function GetScale: integer;
|
| 350 |
function GetSize: cardinal;
|
| 351 |
function GetCharSetWidth: integer;
|
| 352 |
function GetCharSetID: cardinal;
|
| 353 |
function GetTableName: AnsiString;
|
| 354 |
function GetColumnName: AnsiString;
|
| 355 |
function GetDimensions: integer;
|
| 356 |
function GetBounds: TArrayBounds;
|
| 357 |
end;
|
| 358 |
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| 359 |
{The array interface provides access to and modification of the array data
|
| 360 |
contained in an array field of a Firebird Table. The array element is
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| 361 |
selected by specifying its co-ordinates using an integer array. The
|
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getter and setter methods used should be appropriate for the type of data
|
| 363 |
contained in the array. Automatic conversion is provided to and from strings.
|
| 364 |
That is GetAsString and SetAsString are safe to use for sql types other than
|
| 365 |
boolean.
|
| 366 |
|
| 367 |
The interface is returned by a GetAsArray getter method (see ISQLData). A new array
|
| 368 |
can be obtained from the IAttachment interface. The SetAsArray setter method
|
| 369 |
(See ISQLParam) is used to apply an updated or new array to the database using
|
| 370 |
an UPDATE or INSERT statement.
|
| 371 |
|
| 372 |
}
|
| 373 |
|
| 374 |
TArrayEventReason = (arChanging,arChanged);
|
| 375 |
IArray = interface;
|
| 376 |
TArrayEventHandler = procedure(Sender: IArray; Reason: TArrayEventReason) of object;
|
| 377 |
|
| 378 |
IArray = interface(IArrayMetaData)
|
| 379 |
['{631c6bb1-fb49-44fb-a64a-c49859632b88}']
|
| 380 |
function GetArrayID: TISC_QUAD;
|
| 381 |
procedure Clear;
|
| 382 |
function IsEmpty: boolean;
|
| 383 |
procedure PreLoad;
|
| 384 |
procedure CancelChanges;
|
| 385 |
procedure SaveChanges;
|
| 386 |
function GetAsInteger(index: array of integer): integer;
|
| 387 |
function GetAsBoolean(index: array of integer): boolean;
|
| 388 |
function GetAsCurrency(index: array of integer): Currency;
|
| 389 |
function GetAsInt64(index: array of integer): Int64;
|
| 390 |
function GetAsDateTime(index: array of integer): TDateTime; overload;
|
| 391 |
procedure GetAsDateTime(index: array of integer; var aDateTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID); overload;
|
| 392 |
procedure GetAsDateTime(index: array of integer; var aDateTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString); overload;
|
| 393 |
procedure GetAsTime(index: array of integer; var aTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID; OnDate: TDateTime); overload;
|
| 394 |
procedure GetAsTime(index: array of integer; var aTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString; OnDate: TDateTime); overload;
|
| 395 |
function GetAsUTCDateTime(index: array of integer): TDateTime;
|
| 396 |
function GetAsDouble(index: array of integer): Double;
|
| 397 |
function GetAsFloat(index: array of integer): Float;
|
| 398 |
function GetAsLong(index: array of integer): Long;
|
| 399 |
function GetAsShort(index: array of integer): Short;
|
| 400 |
function GetAsString(index: array of integer): AnsiString;
|
| 401 |
function GetAsVariant(index: array of integer): Variant;
|
| 402 |
function GetAsBCD(index: array of integer): tBCD;
|
| 403 |
procedure SetAsInteger(index: array of integer; AValue: integer);
|
| 404 |
procedure SetAsBoolean(index: array of integer; AValue: boolean);
|
| 405 |
procedure SetAsCurrency(index: array of integer; Value: Currency);
|
| 406 |
procedure SetAsInt64(index: array of integer; Value: Int64);
|
| 407 |
procedure SetAsDate(index: array of integer; Value: TDateTime);
|
| 408 |
procedure SetAsDateTime(index: array of integer; Value: TDateTime); overload;
|
| 409 |
procedure SetAsDateTime(index: array of integer; aValue: TDateTime; aTimeZoneID: TFBTimeZoneID); overload;
|
| 410 |
procedure SetAsDateTime(index: array of integer; aValue: TDateTime; aTimeZone: AnsiString); overload;
|
| 411 |
procedure SetAsTime(index: array of integer; Value: TDateTime); overload;
|
| 412 |
procedure SetAsTime(index: array of integer; aValue: TDateTime; OnDate: TDateTime; aTimeZoneID: TFBTimeZoneID); overload;
|
| 413 |
procedure SetAsTime(index: array of integer; aValue: TDateTime; OnDate: TDateTime; aTimeZone: AnsiString); overload;
|
| 414 |
procedure SetAsUTCDateTime(index: array of integer; aUTCTime: TDateTime);
|
| 415 |
procedure SetAsLong(index: array of integer; Value: Long);
|
| 416 |
procedure SetAsDouble(index: array of integer; Value: Double);
|
| 417 |
procedure SetAsFloat(index: array of integer; Value: Float);
|
| 418 |
procedure SetAsShort(index: array of integer; Value: Short);
|
| 419 |
procedure SetAsString(index: array of integer; Value: AnsiString);
|
| 420 |
procedure SetAsVariant(index: array of integer; Value: Variant);
|
| 421 |
procedure SetAsBcd(index: array of integer; aValue: tBCD);
|
| 422 |
procedure SetBounds(dim, UpperBound, LowerBound: integer);
|
| 423 |
function GetAttachment: IAttachment;
|
| 424 |
function GetTransaction: ITransaction;
|
| 425 |
procedure AddEventHandler(Handler: TArrayEventHandler);
|
| 426 |
procedure RemoveEventHandler(Handler: TArrayEventHandler);
|
| 427 |
end;
|
| 428 |
|
| 429 |
{ The Blob metadata interface provides access to the metadata used to describe
|
| 430 |
a blob column in a Firebird table.
|
| 431 |
}
|
| 432 |
|
| 433 |
IBlobMetaData = interface
|
| 434 |
['{575f3c61-bb33-46a5-8975-bb7d1b6e37cc}']
|
| 435 |
function GetSubType: integer;
|
| 436 |
function GetCharSetID: cardinal;
|
| 437 |
function GetCodePage: TSystemCodePage;
|
| 438 |
function GetSegmentSize: cardinal;
|
| 439 |
function GetRelationName: AnsiString;
|
| 440 |
function GetColumnName: AnsiString;
|
| 441 |
end;
|
| 442 |
|
| 443 |
{The Blob Parameter block is used to select a Blob Filter}
|
| 444 |
|
| 445 |
IBPBItem = interface (IParameterBlockItem)
|
| 446 |
['{660822a5-3114-4c16-b6cb-c1a7b2aba70d}']
|
| 447 |
end;
|
| 448 |
|
| 449 |
IBPB = interface (IParameterBlock<IBPBItem>)
|
| 450 |
['{e0cb9eb5-17f7-4416-b7d1-3cddd1dfca76}']
|
| 451 |
end;
|
| 452 |
|
| 453 |
{ The Blob Interface provides access to a blob data item.
|
| 454 |
|
| 455 |
The interface is returned by a GetAsBlob getter method (see ISQLData). A new Blob
|
| 456 |
can be obtained from the IAttachment interface. The SetAsBlob setter method
|
| 457 |
(See ISQLParam) is used to apply an updated or new array to the database using
|
| 458 |
an UPDATE or INSERT statement.
|
| 459 |
}
|
| 460 |
|
| 461 |
TFBBlobMode = (fbmRead,fbmWrite);
|
| 462 |
TBlobType = (btSegmented,btStream);
|
| 463 |
|
| 464 |
IBlob = interface(IBlobMetaData)
|
| 465 |
['{3090a145-7780-442b-b15b-efd4568b8611}']
|
| 466 |
function GetBPB: IBPB;
|
| 467 |
procedure Cancel;
|
| 468 |
procedure Close;
|
| 469 |
function GetBlobID: TISC_QUAD;
|
| 470 |
function GetBlobMode: TFBBlobMode;
|
| 471 |
function GetBlobSize: Int64;
|
| 472 |
procedure GetInfo(var NumSegments: Int64; var MaxSegmentSize,
|
| 473 |
TotalSize: Int64; var BlobType: TBlobType);
|
| 474 |
function Read(var Buffer; Count: Longint): Longint;
|
| 475 |
function Write(const Buffer; Count: Longint): Longint;
|
| 476 |
function LoadFromFile(Filename: AnsiString): IBlob;
|
| 477 |
function LoadFromStream(S: TStream) : IBlob;
|
| 478 |
function SaveToFile(Filename: AnsiString): IBlob;
|
| 479 |
function SaveToStream(S: TStream): IBlob;
|
| 480 |
function GetAsString: rawbytestring;
|
| 481 |
procedure SetAsString(aValue: rawbytestring);
|
| 482 |
function SetString(aValue: rawbytestring): IBlob;
|
| 483 |
function GetAttachment: IAttachment;
|
| 484 |
function GetTransaction: ITransaction;
|
| 485 |
property AsString: rawbytestring read GetAsString write SetAsString;
|
| 486 |
end;
|
| 487 |
|
| 488 |
{ The IColumnMetaData interface provides access to the per column metadata for
|
| 489 |
the output of an SQL Statement.
|
| 490 |
}
|
| 491 |
|
| 492 |
TIBDateTimeFormats = (dfTimestamp, {SQL TIMESTAMP}
|
| 493 |
dfDateTime, {SQL DATETIME}
|
| 494 |
dfTime, {SQL TIME}
|
| 495 |
dfTimestampTZ, {SQL_TIMESTAMP_TZ}
|
| 496 |
dfTimeTZ); {SQLTIME_TZ
|
| 497 |
|
| 498 |
{ IColumnMetaData }
|
| 499 |
|
| 500 |
IColumnMetaData = interface
|
| 501 |
['{c222e6c3-53c1-469f-9e05-0a5c3ef232d8}']
|
| 502 |
function GetIndex: integer;
|
| 503 |
function GetSQLType: cardinal;
|
| 504 |
function GetSQLTypeName: AnsiString;
|
| 505 |
function getSubtype: integer;
|
| 506 |
function getRelationName: AnsiString;
|
| 507 |
function getOwnerName: AnsiString;
|
| 508 |
function getSQLName: AnsiString; {Name of the column}
|
| 509 |
function getAliasName: AnsiString; {Alias Name of column or Column Name if no alias}
|
| 510 |
function getName: AnsiString; {Disambiguated uppercase Field Name}
|
| 511 |
function getScale: integer;
|
| 512 |
function getCharSetID: cardinal;
|
| 513 |
function getCodePage: TSystemCodePage;
|
| 514 |
function GetCharSetWidth: integer;
|
| 515 |
function getIsNullable: boolean;
|
| 516 |
function GetSize: cardinal;
|
| 517 |
function GetArrayMetaData: IArrayMetaData; {Valid only for Array SQL Type}
|
| 518 |
function GetBlobMetaData: IBlobMetaData; {Valid only for Blob SQL Type}
|
| 519 |
function GetDateTimeStrLength(DateTimeFormat: TIBDateTimeFormats): integer;
|
| 520 |
function GetStatement: IStatement;
|
| 521 |
function GetTransaction: ITransaction;
|
| 522 |
function GetAttachment: IAttachment;
|
| 523 |
property Name: AnsiString read GetName;
|
| 524 |
property Size: cardinal read GetSize;
|
| 525 |
property SQLType: cardinal read GetSQLType;
|
| 526 |
property Scale: integer read getScale;
|
| 527 |
property SQLSubtype: integer read getSubtype;
|
| 528 |
property IsNullable: Boolean read GetIsNullable;
|
| 529 |
end;
|
| 530 |
|
| 531 |
{
|
| 532 |
The IMetaData interface provides access to the set of column metadata
|
| 533 |
for the output of an SQL Statement
|
| 534 |
}
|
| 535 |
|
| 536 |
{ IMetaData }
|
| 537 |
|
| 538 |
IMetaData = interface
|
| 539 |
['{4dafdbb6-0d36-4f1f-9c95-8b132804b965}']
|
| 540 |
function getCount: integer;
|
| 541 |
function getColumnMetaData(index: integer): IColumnMetaData;
|
| 542 |
function GetUniqueRelationName: AnsiString; {Non empty if all columns come from the same table}
|
| 543 |
function ByName(Idx: AnsiString): IColumnMetaData;
|
| 544 |
property ColMetaData[index: integer]: IColumnMetaData read getColumnMetaData; default;
|
| 545 |
property Count: integer read getCount;
|
| 546 |
end;
|
| 547 |
|
| 548 |
{
|
| 549 |
The ISQLData interface provides access to the data returned in a field in the
|
| 550 |
current row returned from a query or the result of an SQL Execute statement.
|
| 551 |
|
| 552 |
It subclasses IColumnMetaData and so also provides access to the metadata
|
| 553 |
associated with the column.
|
| 554 |
|
| 555 |
The getter and setter methods, and the corresponding properties, provide typed
|
| 556 |
access to the field data. The method/property used should be consistent
|
| 557 |
with the SQL Type. Automatic conversion is provided from strings.
|
| 558 |
That is GetAsString is safe to use for sql types other than boolean.
|
| 559 |
}
|
| 560 |
|
| 561 |
|
| 562 |
ISQLData = interface(IColumnMetaData)
|
| 563 |
['{3f493e31-7e3f-4606-a07c-b210b9e3619d}']
|
| 564 |
function GetStrDataLength: short;
|
| 565 |
function GetAsBoolean: boolean;
|
| 566 |
function GetAsCurrency: Currency;
|
| 567 |
function GetAsInt64: Int64;
|
| 568 |
function GetAsDateTime: TDateTime; overload;
|
| 569 |
procedure GetAsDateTime(var aDateTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID); overload;
|
| 570 |
procedure GetAsDateTime(var aDateTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString); overload;
|
| 571 |
procedure GetAsTime(var aTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID; OnDate: TDateTime); overload;
|
| 572 |
procedure GetAsTime(var aTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString; OnDate: TDateTime); overload;
|
| 573 |
procedure GetAsTime(var aTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID); overload;
|
| 574 |
procedure GetAsTime(var aTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString); overload;
|
| 575 |
function GetAsUTCDateTime: TDateTime;
|
| 576 |
function GetAsDouble: Double;
|
| 577 |
function GetAsFloat: Float;
|
| 578 |
function GetAsLong: Long;
|
| 579 |
function GetAsPointer: Pointer;
|
| 580 |
function GetAsQuad: TISC_QUAD;
|
| 581 |
function GetAsShort: short;
|
| 582 |
function GetAsString: AnsiString;
|
| 583 |
function GetIsNull: Boolean;
|
| 584 |
function GetAsVariant: Variant;
|
| 585 |
function GetAsBlob: IBlob; overload;
|
| 586 |
function GetAsBlob(BPB: IBPB): IBlob; overload;
|
| 587 |
function GetAsArray: IArray;
|
| 588 |
function GetAsBCD: tBCD;
|
| 589 |
function GetAsNumeric: IFBNumeric;
|
| 590 |
property AsDate: TDateTime read GetAsDateTime;
|
| 591 |
property AsBoolean:boolean read GetAsBoolean;
|
| 592 |
property AsTime: TDateTime read GetAsDateTime;
|
| 593 |
property AsDateTime: TDateTime read GetAsDateTime ;
|
| 594 |
property AsDouble: Double read GetAsDouble;
|
| 595 |
property AsFloat: Float read GetAsFloat;
|
| 596 |
property AsCurrency: Currency read GetAsCurrency;
|
| 597 |
property AsInt64: Int64 read GetAsInt64 ;
|
| 598 |
property AsInteger: Integer read GetAsLong;
|
| 599 |
property AsLong: Long read GetAsLong;
|
| 600 |
property AsPointer: Pointer read GetAsPointer;
|
| 601 |
property AsQuad: TISC_QUAD read GetAsQuad;
|
| 602 |
property AsShort: short read GetAsShort;
|
| 603 |
property AsString: AnsiString read GetAsString;
|
| 604 |
property AsVariant: Variant read GetAsVariant ;
|
| 605 |
property AsBlob: IBlob read GetAsBlob;
|
| 606 |
property AsArray: IArray read GetAsArray;
|
| 607 |
property AsBCD: tBCD read GetAsBCD;
|
| 608 |
property AsNumeric: IFBNumeric read GetAsNumeric;
|
| 609 |
property IsNull: Boolean read GetIsNull;
|
| 610 |
property Value: Variant read GetAsVariant;
|
| 611 |
end;
|
| 612 |
|
| 613 |
{ An IResults interface is returned as the result of an SQL Execute statement
|
| 614 |
and provides access to the fields returned, if any. It is a collection of
|
| 615 |
ISQLData interfaces which are, in turn, used to access the data returned by
|
| 616 |
each field of the result set.
|
| 617 |
}
|
| 618 |
|
| 619 |
IResults = interface
|
| 620 |
['{e836b2bb-93d1-4bbf-a8eb-7ce535de3bb5}']
|
| 621 |
function getCount: integer;
|
| 622 |
function GetStatement: IStatement;
|
| 623 |
function GetTransaction: ITransaction;
|
| 624 |
function GetAttachment: IAttachment;
|
| 625 |
function ByName(Idx: AnsiString): ISQLData;
|
| 626 |
function getSQLData(index: integer): ISQLData;
|
| 627 |
procedure GetData(index: integer; var IsNull:boolean; var len: short; var data: PByte);
|
| 628 |
procedure SetRetainInterfaces(aValue: boolean);
|
| 629 |
property Data[index: integer]: ISQLData read getSQLData; default;
|
| 630 |
property Count: integer read getCount;
|
| 631 |
end;
|
| 632 |
|
| 633 |
{ An IResultSet interface is returned as the result of an SQL Open Cursor statement
|
| 634 |
(e.g. Select Statement) and provides access to the fields returned, if any
|
| 635 |
for the current row. It is a collection of ISQLData interfaces which are,
|
| 636 |
in turn, used to access the data returned by each field of the current row.
|
| 637 |
}
|
| 638 |
IResultSet = interface(IResults)
|
| 639 |
['{0ae4979b-7857-4e8c-8918-ec6f155b51a0}']
|
| 640 |
function FetchNext: boolean; {fetch next record}
|
| 641 |
function FetchPrior: boolean; {fetch previous record}
|
| 642 |
function FetchFirst:boolean; {fetch first record}
|
| 643 |
function FetchLast: boolean; {fetch last record}
|
| 644 |
function FetchAbsolute(position: Integer): boolean; {fetch record by its absolute position in result set}
|
| 645 |
function FetchRelative(offset: Integer): boolean; {fetch record by position relative to current}
|
| 646 |
function GetCursorName: AnsiString;
|
| 647 |
function IsBof: boolean;
|
| 648 |
function IsEof: boolean;
|
| 649 |
procedure Close;
|
| 650 |
end;
|
| 651 |
|
| 652 |
{The ISQLParam interface is used to provide access to each parameter in a
|
| 653 |
parametised SQL Statement. The interface comprises the Setter Methods and properties used to
|
| 654 |
set the value of each parameter.
|
| 655 |
|
| 656 |
Automatic conversion is provided to and from strings. That is GetAsString and
|
| 657 |
SetAsString are safe to use for sql types other than boolean - provided automatic
|
| 658 |
conversion is possible.
|
| 659 |
|
| 660 |
ISQLParam is subclassed from the IParamMetaData interface. This interface provides
|
| 661 |
access to the parameter metadata. This metadata is mutable and can change after
|
| 662 |
a parameter is set to a given value. This is acceptable as long as the parameter
|
| 663 |
metadata is type compatible with the underlying column metadata and hence the
|
| 664 |
parameter value can be converted by Firebird into a value acceptable by the
|
| 665 |
underlying column. The column metadata, which is unmutable, can be obtained
|
| 666 |
by the ISQLParam.getColMetadata interface. When a statement is prepared, the
|
| 667 |
parameter metadata is always initialised to the column metadata.
|
| 668 |
}
|
| 669 |
|
| 670 |
IParamMetaData = interface
|
| 671 |
['{4e148c4e-2d48-4991-a263-f66eca05c6aa}']
|
| 672 |
function GetSQLType: cardinal;
|
| 673 |
function GetSQLTypeName: AnsiString;
|
| 674 |
function getSubtype: integer;
|
| 675 |
function getScale: integer;
|
| 676 |
function getCharSetID: cardinal;
|
| 677 |
function getCodePage: TSystemCodePage;
|
| 678 |
function getIsNullable: boolean;
|
| 679 |
function GetSize: cardinal;
|
| 680 |
property SQLType: cardinal read GetSQLType;
|
| 681 |
end;
|
| 682 |
|
| 683 |
ISQLParam = interface(IParamMetaData)
|
| 684 |
['{b22b4578-6d41-4807-a9a9-d2ec8d1d5a14}']
|
| 685 |
function getColMetadata: IParamMetaData;
|
| 686 |
function GetStatement: IStatement;
|
| 687 |
function GetTransaction: ITransaction;
|
| 688 |
function GetAttachment: IAttachment;
|
| 689 |
function GetIndex: integer;
|
| 690 |
function getName: AnsiString;
|
| 691 |
function GetAsBoolean: boolean;
|
| 692 |
function GetAsCurrency: Currency;
|
| 693 |
function GetAsInt64: Int64;
|
| 694 |
function GetAsDateTime: TDateTime; overload;
|
| 695 |
procedure GetAsDateTime(var aDateTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID); overload;
|
| 696 |
procedure GetAsDateTime(var aDateTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString); overload;
|
| 697 |
procedure GetAsTime(var aTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID; OnDate: TDateTime); overload;
|
| 698 |
procedure GetAsTime(var aTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString; OnDate: TDateTime); overload;
|
| 699 |
procedure GetAsTime(var aTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID); overload;
|
| 700 |
procedure GetAsTime(var aTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString); overload;
|
| 701 |
function GetAsUTCDateTime: TDateTime;
|
| 702 |
function GetAsDouble: Double;
|
| 703 |
function GetAsFloat: Float;
|
| 704 |
function GetAsLong: Long;
|
| 705 |
function GetAsPointer: Pointer;
|
| 706 |
function GetAsQuad: TISC_QUAD;
|
| 707 |
function GetAsShort: short;
|
| 708 |
function GetAsString: AnsiString;
|
| 709 |
function GetIsNull: boolean;
|
| 710 |
function GetAsVariant: Variant;
|
| 711 |
function GetAsBlob: IBlob;
|
| 712 |
function GetAsArray: IArray;
|
| 713 |
function GetAsBCD: tBCD;
|
| 714 |
function GetAsNumeric: IFBNumeric;
|
| 715 |
procedure Clear;
|
| 716 |
function GetModified: boolean;
|
| 717 |
procedure SetAsBoolean(AValue: boolean);
|
| 718 |
procedure SetAsCurrency(aValue: Currency);
|
| 719 |
procedure SetAsInt64(aValue: Int64);
|
| 720 |
procedure SetAsDate(aValue: TDateTime);
|
| 721 |
procedure SetAsLong(aValue: Long);
|
| 722 |
procedure SetAsTime(aValue: TDateTime); overload;
|
| 723 |
procedure SetAsTime(aValue: TDateTime; OnDate: TDateTime; aTimeZoneID: TFBTimeZoneID); overload;
|
| 724 |
procedure SetAsTime(aValue: TDateTime; OnDate: TDateTime; aTimeZone: AnsiString); overload;
|
| 725 |
procedure SetAsTime(aValue: TDateTime; aTimeZoneID: TFBTimeZoneID); overload;
|
| 726 |
procedure SetAsTime(aValue: TDateTime; aTimeZone: AnsiString); overload;
|
| 727 |
procedure SetAsDateTime(aValue: TDateTime); overload;
|
| 728 |
procedure SetAsDateTime(aValue: TDateTime; aTimeZoneID: TFBTimeZoneID); overload;
|
| 729 |
procedure SetAsDateTime(aValue: TDateTime; aTimeZone: AnsiString); overload;
|
| 730 |
procedure SetAsUTCDateTime(aUTCTime: TDateTime);
|
| 731 |
procedure SetAsDouble(aValue: Double);
|
| 732 |
procedure SetAsFloat(aValue: Float);
|
| 733 |
procedure SetAsPointer(aValue: Pointer);
|
| 734 |
procedure SetAsShort(aValue: Short);
|
| 735 |
procedure SetAsString(aValue: AnsiString);
|
| 736 |
procedure SetAsVariant(aValue: Variant);
|
| 737 |
procedure SetIsNull(aValue: Boolean);
|
| 738 |
procedure SetAsBlob(aValue: IBlob);
|
| 739 |
procedure SetAsArray(anArray: IArray);
|
| 740 |
procedure SetAsQuad(aValue: TISC_QUAD);
|
| 741 |
procedure SetCharSetID(aValue: cardinal);
|
| 742 |
procedure SetAsBcd(aValue: tBCD);
|
| 743 |
procedure SetAsNumeric(Value: IFBNumeric);
|
| 744 |
property AsDate: TDateTime read GetAsDateTime write SetAsDate;
|
| 745 |
property AsBoolean:boolean read GetAsBoolean write SetAsBoolean;
|
| 746 |
property AsTime: TDateTime read GetAsDateTime write SetAsTime;
|
| 747 |
property AsDateTime: TDateTime read GetAsDateTime write SetAsDateTime;
|
| 748 |
property AsDouble: Double read GetAsDouble write SetAsDouble;
|
| 749 |
property AsFloat: Float read GetAsFloat write SetAsFloat;
|
| 750 |
property AsCurrency: Currency read GetAsCurrency write SetAsCurrency;
|
| 751 |
property AsInt64: Int64 read GetAsInt64 write SetAsInt64;
|
| 752 |
property AsInteger: Integer read GetAsLong write SetAsLong;
|
| 753 |
property AsLong: Long read GetAsLong write SetAsLong;
|
| 754 |
property AsPointer: Pointer read GetAsPointer write SetAsPointer;
|
| 755 |
property AsShort: Short read GetAsShort write SetAsShort;
|
| 756 |
property AsString: AnsiString read GetAsString write SetAsString;
|
| 757 |
property AsVariant: Variant read GetAsVariant write SetAsVariant;
|
| 758 |
property AsBlob: IBlob read GetAsBlob write SetAsBlob;
|
| 759 |
property AsArray: IArray read GetAsArray write SetAsArray;
|
| 760 |
property AsBCD: tBCD read GetAsBCD write SetAsBCD;
|
| 761 |
property AsNumeric: IFBNumeric read GetAsNumeric write SetAsNumeric;
|
| 762 |
property AsQuad: TISC_QUAD read GetAsQuad write SetAsQuad;
|
| 763 |
property Value: Variant read GetAsVariant write SetAsVariant;
|
| 764 |
property IsNull: Boolean read GetIsNull write SetIsNull;
|
| 765 |
property IsNullable: Boolean read GetIsNullable;
|
| 766 |
property Modified: Boolean read getModified;
|
| 767 |
property Name: AnsiString read GetName;
|
| 768 |
end;
|
| 769 |
|
| 770 |
{
|
| 771 |
The ISQLParams interface provides access to the collection of parameters used
|
| 772 |
for the input to an SQL Statement
|
| 773 |
}
|
| 774 |
|
| 775 |
ISQLParams = interface
|
| 776 |
['{c6d95ac7-b2b7-461b-b890-afef0acbb077}']
|
| 777 |
function getCount: integer;
|
| 778 |
function getSQLParam(index: integer): ISQLParam;
|
| 779 |
function ByName(Idx: AnsiString): ISQLParam ;
|
| 780 |
function GetModified: Boolean;
|
| 781 |
function GetHasCaseSensitiveParams: Boolean;
|
| 782 |
function GetStatement: IStatement;
|
| 783 |
function GetTransaction: ITransaction;
|
| 784 |
function GetAttachment: IAttachment;
|
| 785 |
procedure Clear;
|
| 786 |
property Modified: Boolean read GetModified;
|
| 787 |
property Params[index: integer]: ISQLParam read getSQLParam; default;
|
| 788 |
property Count: integer read getCount;
|
| 789 |
end;
|
| 790 |
|
| 791 |
|
| 792 |
TPerfStats = (psCurrentMemory, psMaxMemory,
|
| 793 |
psRealTime, psUserTime, psBuffers,
|
| 794 |
psReads, psWrites, psFetches,psDeltaMemory);
|
| 795 |
|
| 796 |
TPerfCounters = array[TPerfStats] of Int64;
|
| 797 |
|
| 798 |
{Batch Query Execution Support}
|
| 799 |
|
| 800 |
TBatchCompletionState = (bcExecuteFailed, bcSuccessNoInfo, bcNoMoreErrors);
|
| 801 |
|
| 802 |
IBatchCompletion = interface
|
| 803 |
['{9bc3d49d-16d9-4606-94e5-ee987103ad92}']
|
| 804 |
function getTotalProcessed: cardinal;
|
| 805 |
function getState(updateNo: cardinal): TBatchCompletionState;
|
| 806 |
function getStatusMessage(updateNo: cardinal): AnsiString;
|
| 807 |
function getUpdated: integer;
|
| 808 |
function getErrorStatus(var RowNo: integer; var status: IStatus): boolean;
|
| 809 |
end;
|
| 810 |
|
| 811 |
{The IStatement interface provides access to an SQL Statement once it has been
|
| 812 |
initially prepared. The interface is returned from the IAttachment interface.
|
| 813 |
}
|
| 814 |
|
| 815 |
TStatementFlag = (stHasCursor,stRepeatExecute,stScrollable);
|
| 816 |
TStatementFlags = set of TStatementFlag;
|
| 817 |
|
| 818 |
IStatement = interface
|
| 819 |
['{a260576d-a07d-4a66-b02d-1b72543fd7cf}']
|
| 820 |
function GetMetaData: IMetaData; {Output Metadata}
|
| 821 |
function GetSQLParams: ISQLParams;{Statement Parameters}
|
| 822 |
function GetPlan: AnsiString;
|
| 823 |
function GetRowsAffected(var SelectCount, InsertCount, UpdateCount, DeleteCount: integer): boolean;
|
| 824 |
function GetSQLStatementType: TIBSQLStatementTypes;
|
| 825 |
function GetSQLStatementTypeName: AnsiString;
|
| 826 |
function GetSQLText: AnsiString;
|
| 827 |
function GetProcessedSQLText: AnsiString;
|
| 828 |
function GetSQLDialect: integer;
|
| 829 |
function GetFlags: TStatementFlags;
|
| 830 |
function IsPrepared: boolean;
|
| 831 |
function HasBatchMode: boolean;
|
| 832 |
function IsInBatchMode: boolean;
|
| 833 |
procedure Prepare(aTransaction: ITransaction=nil); overload;
|
| 834 |
procedure Prepare(CursorName: AnsiString; aTransaction: ITransaction=nil); overload;
|
| 835 |
function Execute(aTransaction: ITransaction=nil): IResults;
|
| 836 |
function OpenCursor(aTransaction: ITransaction=nil): IResultSet; overload;
|
| 837 |
function OpenCursor(Scrollable: boolean; aTransaction: ITransaction=nil): IResultSet; overload;
|
| 838 |
function GetAttachment: IAttachment;
|
| 839 |
function GetTransaction: ITransaction;
|
| 840 |
procedure SetRetainInterfaces(aValue: boolean);
|
| 841 |
procedure EnableStatistics(aValue: boolean);
|
| 842 |
function GetPerfStatistics(var stats: TPerfCounters): boolean;
|
| 843 |
{IBatch interface support}
|
| 844 |
procedure AddToBatch;
|
| 845 |
function ExecuteBatch(aTransaction: ITransaction=nil): IBatchCompletion;
|
| 846 |
procedure CancelBatch;
|
| 847 |
function GetBatchCompletion: IBatchCompletion;
|
| 848 |
function GetBatchRowLimit: integer;
|
| 849 |
procedure SetBatchRowLimit(aLimit: integer);
|
| 850 |
{Stale Reference Check}
|
| 851 |
procedure SetStaleReferenceChecks(Enable:boolean); {default true}
|
| 852 |
function GetStaleReferenceChecks: boolean;
|
| 853 |
|
| 854 |
property MetaData: IMetaData read GetMetaData;
|
| 855 |
property SQLParams: ISQLParams read GetSQLParams;
|
| 856 |
property SQLStatementType: TIBSQLStatementTypes read GetSQLStatementType;
|
| 857 |
end;
|
| 858 |
|
| 859 |
ITrInfoItem = interface
|
| 860 |
['{41455e1a-f84e-4e26-aff0-1a78e8b69cfe}']
|
| 861 |
function getItemType: byte;
|
| 862 |
function getSize: integer;
|
| 863 |
function getAsString: AnsiString;
|
| 864 |
function getAsInteger: int64;
|
| 865 |
procedure DecodeTraIsolation(var IsolationType, RecVersion: byte);
|
| 866 |
end;
|
| 867 |
|
| 868 |
{ ITrInformation }
|
| 869 |
|
| 870 |
ITrInformation = interface
|
| 871 |
['{e6ea4a52-c1a1-44ba-9609-c8bcc7cba7b2}']
|
| 872 |
function GetCount: integer;
|
| 873 |
function GetItem(index: integer): ITrInfoItem;
|
| 874 |
function Find(ItemType: byte): ITrInfoItem;
|
| 875 |
procedure PrintBuf; {can be used to print buffer in hex for debugging}
|
| 876 |
property Count: integer read GetCount;
|
| 877 |
property Items[index: integer]: ITrInfoItem read getItem; default;
|
| 878 |
end;
|
| 879 |
|
| 880 |
{Transaction Parameter Block: (TPB)
|
| 881 |
|
| 882 |
The TPB provides the parameters used when starting a transaction. It is allocated
|
| 883 |
empty by the FirebirdAPI and the parameters are then added to it. Each individual
|
| 884 |
parameter may be accessed by the ITPBItem interface which can be used to set the
|
| 885 |
value, if any, of the parameter.
|
| 886 |
|
| 887 |
The TPB parameters, and the associated symbolic codes and parameter values may be
|
| 888 |
found in the Interbase 6.0 API Guide.
|
| 889 |
}
|
| 890 |
|
| 891 |
ITPBItem = interface(IParameterBlockItemWithTypeName)
|
| 892 |
['{544c1f2b-7c12-4a87-a4a5-face7ea72671}']
|
| 893 |
end;
|
| 894 |
|
| 895 |
ITPB = interface(IParameterBlockWithTypeNames<ITPBItem>)
|
| 896 |
['{7369b0ff-defe-437b-81fe-19b211d42d25}']
|
| 897 |
function AsText: AnsiString;
|
| 898 |
end;
|
| 899 |
|
| 900 |
{The ITransactionAction interface provides access to a Transaction once it
|
| 901 |
has been initially started. After a Commit or Rollback, a transaction
|
| 902 |
may be restarted, optinally with a new TPB.
|
| 903 |
|
| 904 |
A multi-database transaction is started from the FirebirdAPI. A single database
|
| 905 |
transaction is started from the IAttachment interface.
|
| 906 |
}
|
| 907 |
|
| 908 |
TTransactionAction = (TARollback, TACommit, TACommitRetaining, TARollbackRetaining);
|
| 909 |
TTransactionCompletion = TARollback.. TACommit;
|
| 910 |
TTrCompletionState = (trCommitted, trRolledback, trCommitFailed, trRollbackFailed);
|
| 911 |
|
| 912 |
|
| 913 |
ITransaction = interface
|
| 914 |
['{30928d0e-a9d7-4c61-b7cf-14f4f38abe2a}']
|
| 915 |
function getTPB: ITPB;
|
| 916 |
procedure Start(DefaultCompletion: TTransactionCompletion=taCommit);
|
| 917 |
function GetInTransaction: boolean;
|
| 918 |
function GetIsReadOnly: boolean;
|
| 919 |
function GetTransactionID: integer;
|
| 920 |
function GetJournalingActive(attachment: IAttachment): boolean;
|
| 921 |
function GetDefaultCompletion: TTransactionCompletion;
|
| 922 |
procedure PrepareForCommit; {Two phase commit - stage 1}
|
| 923 |
function Commit(Force: boolean=false): TTrCompletionState;
|
| 924 |
procedure CommitRetaining;
|
| 925 |
function HasActivity: boolean;
|
| 926 |
function Rollback(Force: boolean=false): TTrCompletionState;
|
| 927 |
procedure RollbackRetaining;
|
| 928 |
function GetAttachmentCount: integer;
|
| 929 |
function GetAttachment(index: integer): IAttachment;
|
| 930 |
function GetTrInformation(Requests: array of byte): ITrInformation; overload;
|
| 931 |
function GetTrInformation(Request: byte): ITrInformation; overload;
|
| 932 |
function GetTransactionName: AnsiString;
|
| 933 |
procedure SetTransactionName(aValue: AnsiString);
|
| 934 |
property InTransaction: boolean read GetInTransaction;
|
| 935 |
property TransactionName: AnsiString read GetTransactionName write SetTransactionName;
|
| 936 |
end;
|
| 937 |
|
| 938 |
{ The IEvents Interface is used to handle events from a single database. The
|
| 939 |
interface is allocated from the IAttachment Interface.
|
| 940 |
|
| 941 |
Note that the EventHandler called when an event occurs following AsynWaitForEvent
|
| 942 |
is called in a different thread to the calling program and TThread.Synchronize
|
| 943 |
may be needed to pass the event back to the main thread.
|
| 944 |
|
| 945 |
Neither AsyncWaitForEvent nor WaitForEvent is intended to be thread safe
|
| 946 |
in a multi-threaded environment and should always be called from the main
|
| 947 |
thread.
|
| 948 |
}
|
| 949 |
|
| 950 |
TEventInfo = record
|
| 951 |
EventName: AnsiString;
|
| 952 |
Count: integer;
|
| 953 |
end;
|
| 954 |
|
| 955 |
TEventCounts = array of TEventInfo;
|
| 956 |
IEvents = interface;
|
| 957 |
TEventHandler = procedure(Sender: IEvents) of object;
|
| 958 |
|
| 959 |
{ IEvents }
|
| 960 |
|
| 961 |
IEvents = interface
|
| 962 |
['{6a0be233-ed08-4524-889c-2e45d0c20e5f}']
|
| 963 |
procedure GetEvents(EventNames: TStrings);
|
| 964 |
procedure SetEvents(EventNames: TStrings); overload;
|
| 965 |
procedure SetEvents(EventName: string); overload;
|
| 966 |
procedure Cancel;
|
| 967 |
function ExtractEventCounts: TEventCounts;
|
| 968 |
procedure WaitForEvent;
|
| 969 |
procedure AsyncWaitForEvent(EventHandler: TEventHandler);
|
| 970 |
function GetAttachment: IAttachment;
|
| 971 |
end;
|
| 972 |
|
| 973 |
TTZTextOptions = (tzOffset, {Time Zone Rendered as an offset to GMT}
|
| 974 |
tzGMT, {No Time Zone. Time part is always rendered in GMT}
|
| 975 |
tzOriginalID); {Time Zone shown as originally entered}
|
| 976 |
|
| 977 |
{The ITimeZoneServices interface provides access to the time zone database
|
| 978 |
used for the attachment. It may be used in support of TIMESTAMP WITH TIME ZONE
|
| 979 |
and TIME WITH TIME ZONE data types.}
|
| 980 |
|
| 981 |
ITimeZoneServices = interface
|
| 982 |
['{163821f5-ebef-42b9-ac60-8ac4b5c09954}']
|
| 983 |
{utility functions}
|
| 984 |
function TimeZoneID2TimeZoneName(aTimeZoneID: TFBTimeZoneID): AnsiString;
|
| 985 |
function TimeZoneName2TimeZoneID(aTimeZone: AnsiString): TFBTimeZoneID;
|
| 986 |
function LocalTimeToGMT(aLocalTime: TDateTime; aTimeZone: AnsiString): TDateTime; overload;
|
| 987 |
function LocalTimeToGMT(aLocalTime: TDateTime; aTimeZoneID: TFBTimeZoneID): TDateTime; overload;
|
| 988 |
function GMTToLocalTime(aGMTTime: TDateTime; aTimeZone: AnsiString): TDateTime; overload;
|
| 989 |
function GMTToLocalTime(aGMTTime: TDateTime; aTimeZoneID: TFBTimeZoneID): TDateTime; overload;
|
| 990 |
function GetEffectiveOffsetMins(aLocalTime: TDateTime; aTimeZone: AnsiString): integer; overload;
|
| 991 |
function GetEffectiveOffsetMins(aLocalTime: TDateTime; aTimeZoneID: TFBTimeZoneID): integer; overload;
|
| 992 |
|
| 993 |
{Time Zone DB Information}
|
| 994 |
function UsingRemoteTZDB: boolean;
|
| 995 |
procedure SetUseLocalTZDB(useLocalTZDB: boolean);
|
| 996 |
function GetLocalTimeZoneName: AnsiString;
|
| 997 |
function GetLocalTimeZoneID: TFBTimeZoneID;
|
| 998 |
procedure GetTimeZoneInfo(aTimeZone: AnsiString; OnDate: TDateTime;
|
| 999 |
var ZoneOffset, DSTOffset, EffectiveOffset: integer);
|
| 1000 |
{Configurable Options}
|
| 1001 |
function GetTimeTZDate: TDateTime;
|
| 1002 |
procedure SetTimeTZDate(aDate: TDateTime);
|
| 1003 |
function GetTZTextOption: TTZTextOptions;
|
| 1004 |
procedure SetTZTextOption(aOptionValue: TTZTextOptions);
|
| 1005 |
end;
|
| 1006 |
|
| 1007 |
{The IDBInformation Interface.
|
| 1008 |
|
| 1009 |
An IDBInformation interface is returned by the IAttachment GetDBInformation
|
| 1010 |
method. The interface provides access to the information requested and
|
| 1011 |
returned by the method.
|
| 1012 |
|
| 1013 |
IDBInformation itself gives access to a collection of IDBInfoItems. Each one
|
| 1014 |
provides information requested, as indicated by the ItemType and the actual
|
| 1015 |
value of the information. In some cases, the returned item is itself a
|
| 1016 |
colletion of IDBInfoItems.
|
| 1017 |
|
| 1018 |
The IDBInformation items, and the associated symbolic codes and parameter values may be
|
| 1019 |
found in the Interbase 6.0 API Guide.
|
| 1020 |
}
|
| 1021 |
|
| 1022 |
TDBOperationCount = record
|
| 1023 |
TableID: UShort;
|
| 1024 |
Count: cardinal;
|
| 1025 |
end;
|
| 1026 |
|
| 1027 |
TDBOperationCounts = array of TDBOperationCount;
|
| 1028 |
|
| 1029 |
IDBInfoItem = interface
|
| 1030 |
['{eeb97b51-ec0f-473f-9f75-c1721f055fcb}']
|
| 1031 |
function getItemType: byte;
|
| 1032 |
function getSize: integer;
|
| 1033 |
procedure getRawBytes(var Buffer);
|
| 1034 |
function getAsString: AnsiString;
|
| 1035 |
function getAsInteger: int64;
|
| 1036 |
procedure DecodeIDCluster(var ConnectionType: integer; var DBFileName, DBSiteName: AnsiString);
|
| 1037 |
function getAsBytes: TByteArray;
|
| 1038 |
function getAsDateTime: TDateTime;
|
| 1039 |
procedure DecodeVersionString(var Version: byte; var VersionString: AnsiString);
|
| 1040 |
function getOperationCounts: TDBOperationCounts;
|
| 1041 |
procedure DecodeUserNames(UserNames: TStrings);
|
| 1042 |
|
| 1043 |
{user names only}
|
| 1044 |
function GetCount: integer;
|
| 1045 |
function GetItem(index: integer): IDBInfoItem;
|
| 1046 |
function Find(ItemType: byte): IDBInfoItem;
|
| 1047 |
property AsInteger: int64 read getAsInteger;
|
| 1048 |
property AsString: AnsiString read GetAsString;
|
| 1049 |
property Count: integer read GetCount;
|
| 1050 |
property Items[index: integer]: IDBInfoItem read getItem; default;
|
| 1051 |
end;
|
| 1052 |
|
| 1053 |
{ IDBInformation }
|
| 1054 |
|
| 1055 |
IDBInformation = interface
|
| 1056 |
['{7ac6777f-f0a9-498a-9f5c-4a57a554df81}']
|
| 1057 |
function GetCount: integer;
|
| 1058 |
function GetItem(index: integer): IDBInfoItem;
|
| 1059 |
function Find(ItemType: byte): IDBInfoItem;
|
| 1060 |
procedure PrintBuf; {can be used to print buffer in hex for debugging}
|
| 1061 |
property Count: integer read GetCount;
|
| 1062 |
property Items[index: integer]: IDBInfoItem read getItem; default;
|
| 1063 |
end;
|
| 1064 |
|
| 1065 |
{The Database Information Request Block is used to pass requests for
|
| 1066 |
database information where at least one item requested has a parameter.
|
| 1067 |
At present, this is only fb_info_page_contents which has a single
|
| 1068 |
integer parameter.}
|
| 1069 |
|
| 1070 |
IDIRBItem = interface(IParameterBlockItem)
|
| 1071 |
['{d34a7511-8435-4a24-81a7-5103d218d234}']
|
| 1072 |
end;
|
| 1073 |
|
| 1074 |
IDIRB = interface(IParameterBlock<IDIRBItem>)
|
| 1075 |
['{1010e5ac-0a8f-403b-a302-91625e9d9579}']
|
| 1076 |
end;
|
| 1077 |
|
| 1078 |
|
| 1079 |
{The Database Parameter Block (DPB).
|
| 1080 |
|
| 1081 |
The DPB provides the parameters used when connecting to a database. It is allocated
|
| 1082 |
empty by the FirebirdAPI and the parameters are then added to it. Each individual
|
| 1083 |
parameter may be accessed by the IDPBItem interface which can be used to set the
|
| 1084 |
value, if any, of the parameter.
|
| 1085 |
|
| 1086 |
The DPB parameters, and the associated symbolic codes and parameter values may be
|
| 1087 |
found in the Interbase 6.0 API Guide.
|
| 1088 |
}
|
| 1089 |
|
| 1090 |
IDPBItem = interface(IParameterBlockItemWithTypeName)
|
| 1091 |
['{123d4ad0-087a-4cd1-a344-1b3d03b30673}']
|
| 1092 |
end;
|
| 1093 |
|
| 1094 |
IDPB = interface(IParameterBlockWithTypeNames<IDPBItem>)
|
| 1095 |
['{e676067b-1cf4-4eba-9256-9724f57e0d16}']
|
| 1096 |
end;
|
| 1097 |
|
| 1098 |
{Journaling options. Default is [joReadWriteTransactions,joModifyQueries] }
|
| 1099 |
|
| 1100 |
TJournalOption = (joReadOnlyTransactions, joReadWriteTransactions,
|
| 1101 |
joModifyQueries, joReadOnlyQueries,joNoServerTable);
|
| 1102 |
|
| 1103 |
TJournalOptions = set of TJournalOption;
|
| 1104 |
|
| 1105 |
{The IAttachment interface provides access to a Database Connection. It may be
|
| 1106 |
used to:
|
| 1107 |
|
| 1108 |
a. Disconnect and reconnect to the database.
|
| 1109 |
|
| 1110 |
b. Start a Transaction on the database
|
| 1111 |
|
| 1112 |
c. Execute directly SQL DDL Statements and others that return no information.
|
| 1113 |
|
| 1114 |
d. OpenCursors (i.e. execute SQL Select statements and return the results)
|
| 1115 |
|
| 1116 |
e. Prepare SQL Statements, returning an IStatement interface for further processing.
|
| 1117 |
|
| 1118 |
f. Provide access to an SQL Event Handler.
|
| 1119 |
|
| 1120 |
g. Access Database Information.
|
| 1121 |
|
| 1122 |
h. Support the handling of Array and Blob data.
|
| 1123 |
|
| 1124 |
Note that SQL statements can be prepared with named parameters (PSQL style).
|
| 1125 |
This then allows the parameters to be accessed by name. The same name can
|
| 1126 |
be used for more than one parameter, allowing a single operation to be used
|
| 1127 |
to set all parameters with the same name.
|
| 1128 |
}
|
| 1129 |
|
| 1130 |
{ IAttachment }
|
| 1131 |
|
| 1132 |
IAttachment = interface
|
| 1133 |
['{466e9b67-9def-4807-b3e7-e08a35e7185c}']
|
| 1134 |
function getFirebirdAPI: IFirebirdAPI;
|
| 1135 |
function getDPB: IDPB;
|
| 1136 |
function AllocateBPB: IBPB;
|
| 1137 |
function AllocateDIRB: IDIRB;
|
| 1138 |
procedure Connect;
|
| 1139 |
procedure Disconnect(Force: boolean=false);
|
| 1140 |
function IsConnected: boolean;
|
| 1141 |
procedure DropDatabase;
|
| 1142 |
function StartTransaction(TPB: array of byte;
|
| 1143 |
DefaultCompletion: TTransactionCompletion=taCommit;
|
| 1144 |
aName: AnsiString=''): ITransaction; overload;
|
| 1145 |
function StartTransaction(TPB: ITPB;
|
| 1146 |
DefaultCompletion: TTransactionCompletion=taCommit;
|
| 1147 |
aName: AnsiString=''): ITransaction; overload;
|
| 1148 |
procedure ExecImmediate(transaction: ITransaction; sql: AnsiString; SQLDialect: integer); overload;
|
| 1149 |
procedure ExecImmediate(TPB: array of byte; sql: AnsiString; SQLDialect: integer); overload;
|
| 1150 |
procedure ExecImmediate(transaction: ITransaction; sql: AnsiString); overload;
|
| 1151 |
procedure ExecImmediate(TPB: array of byte; sql: AnsiString); overload;
|
| 1152 |
function ExecuteSQL(TPB: array of byte; sql: AnsiString; SQLDialect: integer; params: array of const): IResults; overload;
|
| 1153 |
function ExecuteSQL(transaction: ITransaction; sql: AnsiString; SQLDialect: integer; params: array of const): IResults; overload;
|
| 1154 |
function ExecuteSQL(TPB: array of byte; sql: AnsiString; params: array of const): IResults; overload;
|
| 1155 |
function ExecuteSQL(transaction: ITransaction; sql: AnsiString; params: array of const): IResults; overload;
|
| 1156 |
function OpenCursor(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer;
|
| 1157 |
Scrollable: boolean=false): IResultSet; overload;
|
| 1158 |
function OpenCursor(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer;
|
| 1159 |
params: array of const): IResultSet; overload;
|
| 1160 |
function OpenCursor(transaction: ITransaction; sql: AnsiString; Scrollable: boolean=false): IResultSet; overload;
|
| 1161 |
function OpenCursor(transaction: ITransaction; sql: AnsiString; Scrollable: boolean;
|
| 1162 |
params: array of const): IResultSet; overload;
|
| 1163 |
function OpenCursor(transaction: ITransaction; sql: AnsiString;
|
| 1164 |
params: array of const): IResultSet; overload;
|
| 1165 |
function OpenCursor(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer; Scrollable: boolean;
|
| 1166 |
params: array of const): IResultSet; overload;
|
| 1167 |
function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer;
|
| 1168 |
Scrollable: boolean=false): IResultSet; overload;
|
| 1169 |
function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer;
|
| 1170 |
params: array of const): IResultSet; overload;
|
| 1171 |
function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer; Scrollable: boolean;
|
| 1172 |
params: array of const): IResultSet; overload;
|
| 1173 |
function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; Scrollable: boolean=false): IResultSet; overload;
|
| 1174 |
function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString;
|
| 1175 |
params: array of const): IResultSet; overload;
|
| 1176 |
function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; Scrollable: boolean;
|
| 1177 |
params: array of const): IResultSet; overload;
|
| 1178 |
function OpenCursorAtStart(sql: AnsiString; Scrollable: boolean=false): IResultSet; overload;
|
| 1179 |
function OpenCursorAtStart(sql: AnsiString; Scrollable: boolean;
|
| 1180 |
params: array of const): IResultSet; overload;
|
| 1181 |
function OpenCursorAtStart(sql: AnsiString;
|
| 1182 |
params: array of const): IResultSet; overload;
|
| 1183 |
function Prepare(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer; CursorName: AnsiString=''): IStatement; overload;
|
| 1184 |
function Prepare(transaction: ITransaction; sql: AnsiString; CursorName: AnsiString=''): IStatement; overload;
|
| 1185 |
function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
|
| 1186 |
aSQLDialect: integer; GenerateParamNames: boolean=false;
|
| 1187 |
CaseSensitiveParams: boolean = false; CursorName: AnsiString=''): IStatement; overload;
|
| 1188 |
function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
|
| 1189 |
GenerateParamNames: boolean=false;
|
| 1190 |
CaseSensitiveParams: boolean = false; CursorName: AnsiString=''): IStatement; overload;
|
| 1191 |
|
| 1192 |
{Events}
|
| 1193 |
function GetEventHandler(Events: TStrings): IEvents; overload;
|
| 1194 |
function GetEventHandler(Event: AnsiString): IEvents; overload;
|
| 1195 |
|
| 1196 |
{Blob - may use to open existing Blobs. However, ISQLData.AsBlob is preferred}
|
| 1197 |
|
| 1198 |
function CreateBlob(transaction: ITransaction; RelationName, ColumnName: AnsiString; BPB: IBPB=nil): IBlob; overload;
|
| 1199 |
function CreateBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BPB: IBPB=nil): IBlob; overload;
|
| 1200 |
function CreateBlob(transaction: ITransaction; SubType: integer; CharSetID: cardinal=0; BPB: IBPB=nil): IBlob; overload;
|
| 1201 |
function OpenBlob(transaction: ITransaction; RelationName, ColumnName: AnsiString; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload;
|
| 1202 |
function OpenBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload;
|
| 1203 |
function GetInlineBlobLimit: integer;
|
| 1204 |
procedure SetInlineBlobLimit(limit: integer);
|
| 1205 |
|
| 1206 |
{Array - may use to open existing arrays. However, ISQLData.AsArray is preferred}
|
| 1207 |
|
| 1208 |
function OpenArray(transaction: ITransaction; RelationName, ColumnName: AnsiString; ArrayID: TISC_QUAD): IArray; overload;
|
| 1209 |
function OpenArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData; ArrayID: TISC_QUAD): IArray; overload;
|
| 1210 |
function CreateArray(transaction: ITransaction; RelationName, ColumnName: AnsiString): IArray; overload;
|
| 1211 |
function CreateArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData): IArray; overload;
|
| 1212 |
function CreateArrayMetaData(SQLType: cardinal; tableName: AnsiString; columnName: AnsiString;
|
| 1213 |
Scale: integer; size: cardinal; charSetID: cardinal; dimensions: cardinal;
|
| 1214 |
bounds: TArrayBounds): IArrayMetaData;
|
| 1215 |
|
| 1216 |
{Database Information}
|
| 1217 |
function GetSQLDialect: integer;
|
| 1218 |
function GetAttachmentID: integer;
|
| 1219 |
function GetBlobMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IBlobMetaData;
|
| 1220 |
function GetArrayMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IArrayMetaData;
|
| 1221 |
function GetDBInformation(Requests: array of byte): IDBInformation; overload;
|
| 1222 |
function GetDBInformation(Request: byte): IDBInformation; overload;
|
| 1223 |
function GetDBInformation(Requests: IDIRB): IDBInformation; overload;
|
| 1224 |
function GetConnectString: AnsiString;
|
| 1225 |
function GetRemoteProtocol: AnsiString;
|
| 1226 |
function GetAuthenticationMethod: AnsiString;
|
| 1227 |
function GetSecurityDatabase: AnsiString;
|
| 1228 |
function GetODSMajorVersion: integer;
|
| 1229 |
function GetODSMinorVersion: integer;
|
| 1230 |
procedure getFBVersion(version: TStrings);
|
| 1231 |
function HasActivity: boolean;
|
| 1232 |
function HasDecFloatSupport: boolean;
|
| 1233 |
function HasBatchMode: boolean;
|
| 1234 |
function HasScollableCursors: boolean;
|
| 1235 |
function HasTable(aTableName: AnsiString): boolean; {case sensitive}
|
| 1236 |
function HasFunction(aFunctionName: AnsiString): boolean; {case sensitive}
|
| 1237 |
function HasProcedure(aProcName: AnsiString): boolean; {case sensitive}
|
| 1238 |
|
| 1239 |
{Character Sets}
|
| 1240 |
function GetCharSetID: integer; {connection character set}
|
| 1241 |
function HasDefaultCharSet: boolean;
|
| 1242 |
function GetDefaultCharSetID: integer;
|
| 1243 |
function GetCharsetName(CharSetID: integer): AnsiString;
|
| 1244 |
function CharSetID2CodePage(CharSetID: integer; var CodePage: TSystemCodePage): boolean;
|
| 1245 |
function CodePage2CharSetID(CodePage: TSystemCodePage; var CharSetID: integer): boolean;
|
| 1246 |
function CharSetName2CharSetID(CharSetName: AnsiString; var CharSetID: integer): boolean;
|
| 1247 |
function CharSetWidth(CharSetID: integer; var Width: integer): boolean;
|
| 1248 |
procedure RegisterCharSet(CharSetName: AnsiString; CodePage: TSystemCodePage;
|
| 1249 |
AllowReverseLookup:boolean; out CharSetID: integer);
|
| 1250 |
|
| 1251 |
{Time Zone Database}
|
| 1252 |
function GetTimeZoneServices: ITimeZoneServices;
|
| 1253 |
function HasTimeZoneSupport: boolean;
|
| 1254 |
|
| 1255 |
{Client side Journaling}
|
| 1256 |
function JournalingActive: boolean;
|
| 1257 |
function GetJournalOptions: TJournalOptions;
|
| 1258 |
function StartJournaling(aJournalLogFile: AnsiString): integer; overload;
|
| 1259 |
function StartJournaling(aJournalLogFile: AnsiString; Options: TJournalOptions): integer; overload;
|
| 1260 |
function StartJournaling(S: TStream; Options: TJournalOptions): integer; overload;
|
| 1261 |
procedure StopJournaling(RetainJournal: boolean);
|
| 1262 |
end;
|
| 1263 |
|
| 1264 |
TProtocolAll = (TCP, SPX, NamedPipe, Local, inet, inet4, inet6, wnet, xnet, unknownProtocol);
|
| 1265 |
TProtocol = TCP..xnet;
|
| 1266 |
|
| 1267 |
{Service Parameter Block (SPB).
|
| 1268 |
|
| 1269 |
The SPB provides the parameters used when connecting to a Service Manager. It is
|
| 1270 |
allocated empty by the FirebirdAPI and the parameters are then added to it. Each
|
| 1271 |
individual parameter may be accessed by the ISPBItem interface which can be used
|
| 1272 |
to set the value, if any, of the parameter.
|
| 1273 |
|
| 1274 |
The SPB parameters, and the associated symbolic codes and parameter values may be
|
| 1275 |
found in the Interbase 6.0 API Guide.
|
| 1276 |
|
| 1277 |
}
|
| 1278 |
|
| 1279 |
ISPBItem = interface(IParameterBlockItemWithTypeName)
|
| 1280 |
['{5d08ae2b-4519-41bd-8b40-97cd451c3f6a}']
|
| 1281 |
end;
|
| 1282 |
|
| 1283 |
ISPB = interface(IParameterBlockWithTypeNames<ISPBItem>)
|
| 1284 |
['{2c5836fd-41ed-4426-9b7d-5af580ec2659}']
|
| 1285 |
end;
|
| 1286 |
|
| 1287 |
{Service Query Parameter Block (SQPB).
|
| 1288 |
|
| 1289 |
This is a specialised parameter block used to send data to a service manager
|
| 1290 |
in a Query Request.
|
| 1291 |
}
|
| 1292 |
|
| 1293 |
ISQPBItem = interface(IParameterBlockItem)
|
| 1294 |
['{b07841a6-33b3-47f0-b5a2-028cbc86dc97}']
|
| 1295 |
function CopyFrom(source: TStream; count: integer): integer;
|
| 1296 |
end;
|
| 1297 |
|
| 1298 |
ISQPB = interface(IParameterBlock<ISQPBItem>)
|
| 1299 |
['{8553e66b-ee62-498b-8431-dff030211447}']
|
| 1300 |
end;
|
| 1301 |
|
| 1302 |
{Service Request Block (SRB).
|
| 1303 |
|
| 1304 |
The SRB specifies what is requested from the Service Manager when starting a
|
| 1305 |
service or querying a service. It is allocated empty by the ServiceManager API and
|
| 1306 |
the parameters are then added to it. Each individual parameter may be accessed
|
| 1307 |
by the ISRBItem interface which can be used to set the value, if any, of the parameter.
|
| 1308 |
|
| 1309 |
The SRB parameters, and the associated symbolic codes and parameter values may be
|
| 1310 |
found in the Interbase 6.0 API Guide.
|
| 1311 |
|
| 1312 |
}
|
| 1313 |
|
| 1314 |
ISRBItem = interface(IParameterBlockItem)
|
| 1315 |
['{47ec790e-f265-4b30-9dcd-261e51677245}']
|
| 1316 |
end;
|
| 1317 |
|
| 1318 |
ISRB = interface(IParameterBlock<ISRBItem>)
|
| 1319 |
['{9f2e204f-3c33-4e44-90f9-9135e95dafb9}']
|
| 1320 |
end;
|
| 1321 |
|
| 1322 |
{The Service Query Results Interface.
|
| 1323 |
|
| 1324 |
An IServiceQueryResults interface is returned by the IServiceManager Query
|
| 1325 |
method. The interface provides access to the information requested and
|
| 1326 |
returned by the method.
|
| 1327 |
|
| 1328 |
IServiceQueryResults itself gives access to a collection of IServiceQueryResultItem.
|
| 1329 |
Each one provides information requested, as indicated by the ItemType and the actual
|
| 1330 |
value of the information. In some cases, the returned item is itself a
|
| 1331 |
collection of IServiceQueryResultSubItem.
|
| 1332 |
|
| 1333 |
The IServiceQueryResultItem items, and the associated symbolic codes and parameter values may be
|
| 1334 |
found in the Interbase 6.0 API Guide.
|
| 1335 |
}
|
| 1336 |
|
| 1337 |
IServiceQueryResultSubItem = interface
|
| 1338 |
['{8a4c381e-9923-4cc9-a96b-553729248640}']
|
| 1339 |
function getItemType: byte;
|
| 1340 |
function getSize: integer;
|
| 1341 |
procedure getRawBytes(var Buffer);
|
| 1342 |
function getAsString: AnsiString;
|
| 1343 |
function getAsInteger: int64;
|
| 1344 |
function getAsByte: byte;
|
| 1345 |
function CopyTo(stream: TStream; count: integer): integer;
|
| 1346 |
property AsString: AnsiString read getAsString;
|
| 1347 |
property AsInteger: int64 read getAsInteger;
|
| 1348 |
property AsByte: byte read getAsByte;
|
| 1349 |
end;
|
| 1350 |
|
| 1351 |
IServiceQueryResultItem = interface(IServiceQueryResultSubItem)
|
| 1352 |
['{b2806886-206c-4024-8df9-5fe0a7630a5e}']
|
| 1353 |
function getCount: integer;
|
| 1354 |
function getItem(index: integer): IServiceQueryResultSubItem;
|
| 1355 |
function find(ItemType: byte): IServiceQueryResultSubItem;
|
| 1356 |
property Items[index: integer]: IServiceQueryResultSubItem read getItem; default;
|
| 1357 |
property Count: integer read getCount;
|
| 1358 |
end;
|
| 1359 |
|
| 1360 |
IServiceQueryResults = interface
|
| 1361 |
['{8fbbef7d-fe03-4409-828a-a787d34ef531}']
|
| 1362 |
function getCount: integer;
|
| 1363 |
function getItem(index: integer): IServiceQueryResultItem;
|
| 1364 |
function find(ItemType: byte): IServiceQueryResultItem;
|
| 1365 |
procedure PrintBuf; {can be used to print buffer in hex for debugging}
|
| 1366 |
property Items[index: integer]: IServiceQueryResultItem read getItem; default;
|
| 1367 |
property Count: integer read getCount;
|
| 1368 |
end;
|
| 1369 |
|
| 1370 |
IFirebirdLibrary = interface;
|
| 1371 |
|
| 1372 |
{The IServiceManager interface provides access to a service manager. It can
|
| 1373 |
used to Detach and re-attach to Service Manager, to start services and to
|
| 1374 |
query the service manager.
|
| 1375 |
|
| 1376 |
The interface is returned by the FirebirdAPI GetService Manager method.
|
| 1377 |
}
|
| 1378 |
|
| 1379 |
{ IServiceManager }
|
| 1380 |
|
| 1381 |
IServiceManager = interface
|
| 1382 |
['{905b587d-1e1f-4e40-a3f8-a3519f852e48}']
|
| 1383 |
function getFirebirdAPI: IFirebirdAPI;
|
| 1384 |
function getSPB: ISPB;
|
| 1385 |
function getServerName: AnsiString;
|
| 1386 |
function getProtocol: TProtocol;
|
| 1387 |
function getPortNo: AnsiString;
|
| 1388 |
procedure Attach;
|
| 1389 |
procedure Detach(Force: boolean=false);
|
| 1390 |
function IsAttached: boolean;
|
| 1391 |
function AllocateSRB: ISRB;
|
| 1392 |
function AllocateSQPB: ISQPB;
|
| 1393 |
function Start(Request: ISRB; RaiseExceptionOnError: boolean=true): boolean;
|
| 1394 |
function Query(SQPB: ISQPB; Request: ISRB; RaiseExceptionOnError: boolean=true) :IServiceQueryResults; overload;
|
| 1395 |
function Query(Request: ISRB; RaiseExceptionOnError: boolean=true) :IServiceQueryResults; overload;
|
| 1396 |
end;
|
| 1397 |
|
| 1398 |
{Tbe Firebird Library API used to get information about the Firebird library}
|
| 1399 |
|
| 1400 |
|
| 1401 |
IFirebirdLibrary = interface
|
| 1402 |
['{3c04e0a1-12e0-428a-b2e1-bc6fcd97b79b}']
|
| 1403 |
function GetHandle: TLibHandle;
|
| 1404 |
function GetLibraryName: string;
|
| 1405 |
function GetLibraryFilePath: string;
|
| 1406 |
function GetFirebirdAPI: IFirebirdAPI;
|
| 1407 |
end;
|
| 1408 |
|
| 1409 |
{The Firebird API.
|
| 1410 |
|
| 1411 |
This is the base interface and is used to create/open a database connection, to
|
| 1412 |
start a transaction on multiple databases and the access the service manager.
|
| 1413 |
|
| 1414 |
The interface is returned by the FirebirdAPI function.
|
| 1415 |
}
|
| 1416 |
|
| 1417 |
{ IFirebirdAPI }
|
| 1418 |
|
| 1419 |
IFirebirdAPI = interface
|
| 1420 |
['{edeee691-c8d3-4dcf-a780-cd7e432821d5}']
|
| 1421 |
{Database connections}
|
| 1422 |
function AllocateDPB: IDPB;
|
| 1423 |
function OpenDatabase(DatabaseName: AnsiString; DPB: IDPB; RaiseExceptionOnConnectError: boolean=true): IAttachment;
|
| 1424 |
function CreateDatabase(DatabaseName: AnsiString; DPB: IDPB; RaiseExceptionOnError: boolean=true): IAttachment; overload;
|
| 1425 |
function CreateDatabase(sql: AnsiString; aSQLDialect: integer; RaiseExceptionOnError: boolean=true): IAttachment; overload;
|
| 1426 |
|
| 1427 |
{Start Transaction against multiple databases}
|
| 1428 |
function AllocateTPB: ITPB;
|
| 1429 |
function StartTransaction(Attachments: array of IAttachment;
|
| 1430 |
TPB: array of byte; DefaultCompletion: TTransactionCompletion=taCommit;
|
| 1431 |
aName: AnsiString=''): ITransaction; overload;
|
| 1432 |
function StartTransaction(Attachments: array of IAttachment;
|
| 1433 |
TPB: ITPB; DefaultCompletion: TTransactionCompletion=taCommit;
|
| 1434 |
aName: AnsiString=''): ITransaction; overload;
|
| 1435 |
|
| 1436 |
{Service Manager}
|
| 1437 |
function HasServiceAPI: boolean;
|
| 1438 |
function AllocateSPB: ISPB;
|
| 1439 |
function GetServiceManager(ServerName: AnsiString; Protocol: TProtocol; SPB: ISPB): IServiceManager; overload;
|
| 1440 |
function GetServiceManager(ServerName: AnsiString; Port: AnsiString; Protocol: TProtocol; SPB: ISPB): IServiceManager; overload;
|
| 1441 |
|
| 1442 |
{Information}
|
| 1443 |
function GetStatus: IStatus;
|
| 1444 |
function HasRollbackRetaining: boolean;
|
| 1445 |
function IsEmbeddedServer: boolean;
|
| 1446 |
function GetImplementationVersion: AnsiString;
|
| 1447 |
function GetClientMajor: integer;
|
| 1448 |
function GetClientMinor: integer;
|
| 1449 |
function HasDecFloatSupport: boolean;
|
| 1450 |
function HasLocalTZDB: boolean;
|
| 1451 |
function HasTimeZoneSupport: boolean;
|
| 1452 |
function HasExtendedTZSupport: boolean;
|
| 1453 |
|
| 1454 |
{Firebird 3 API}
|
| 1455 |
function HasMasterIntf: boolean;
|
| 1456 |
function GetIMaster: TObject; deprecated 'Use FirebirdAPI.QueryInterface and FBClientLib.pas IFBIMasterProvider instead';
|
| 1457 |
function GetFBLibrary: IFirebirdLibrary;
|
| 1458 |
end;
|
| 1459 |
|
| 1460 |
type
|
| 1461 |
TOnGetLibraryName = procedure(var libname: string);
|
| 1462 |
|
| 1463 |
const
|
| 1464 |
OnGetLibraryName: TOnGetLibraryName = nil;
|
| 1465 |
AllowUseOfFBLIB: boolean = false;
|
| 1466 |
|
| 1467 |
type
|
| 1468 |
{ EIBError }
|
| 1469 |
|
| 1470 |
EIBError = class(EDatabaseError)
|
| 1471 |
private
|
| 1472 |
FSQLCode: Long;
|
| 1473 |
public
|
| 1474 |
constructor Create(ASQLCode: Long; Msg: AnsiString);
|
| 1475 |
property SQLCode: Long read FSQLCode;
|
| 1476 |
end;
|
| 1477 |
|
| 1478 |
{ EIBInterBaseError - Firebird Engine errors}
|
| 1479 |
|
| 1480 |
EIBInterBaseError = class(EIBError)
|
| 1481 |
private
|
| 1482 |
FIBErrorCode: Long;
|
| 1483 |
FStatus: IStatus;
|
| 1484 |
public
|
| 1485 |
constructor Create(aStatus: IStatus); overload;
|
| 1486 |
constructor Create(ASQLCode: Long; AIBErrorCode: Long; Msg: AnsiString); overload;
|
| 1487 |
property IBErrorCode: Long read FIBErrorCode;
|
| 1488 |
property Status: IStatus read FStatus;
|
| 1489 |
end;
|
| 1490 |
|
| 1491 |
{IB Client Exceptions}
|
| 1492 |
EIBClientError = class(EIBError);
|
| 1493 |
|
| 1494 |
{Used to explicitly report a Batch Buffer overflow}
|
| 1495 |
EIBBatchBufferOverflow = class(EIBError);
|
| 1496 |
|
| 1497 |
{The Firebird API function is used to access the IFirebirdAPI interface.
|
| 1498 |
|
| 1499 |
It will load the Firebird Client Library if this is not already loaded and
|
| 1500 |
select an implementation of the Firebird API (legacy 2.5 or 3.0.
|
| 1501 |
}
|
| 1502 |
|
| 1503 |
function FirebirdAPI: IFirebirdAPI;
|
| 1504 |
|
| 1505 |
{IBX support functions. Probably best ignored i.e. always used the FirebirdAPI
|
| 1506 |
function to load the library and check if it's loaded.}
|
| 1507 |
|
| 1508 |
function TryIBLoad: Boolean;
|
| 1509 |
procedure CheckIBLoaded;
|
| 1510 |
|
| 1511 |
{If you want to explicitly load the Firebird library from a
|
| 1512 |
non-default location then use this function and its GetFirebirdAPI function
|
| 1513 |
to get the API.}
|
| 1514 |
|
| 1515 |
function LoadFBLibrary(aLibPathName: string): IFirebirdLibrary;
|
| 1516 |
|
| 1517 |
{$if not declared(Null)} {Needed for Delphi}
|
| 1518 |
function Null: Variant; // Null standard constant
|
| 1519 |
{$define NEEDNULLFUNCTION}
|
| 1520 |
{$ifend}
|
| 1521 |
|
| 1522 |
implementation
|
| 1523 |
|
| 1524 |
uses FBClientAPI {$if not declared(NULL)}, Variants {$ifend}
|
| 1525 |
{$IFDEF USELEGACYFIREBIRDAPI}, FB25ClientAPI {$ENDIF}
|
| 1526 |
{$IFDEF USEFIREBIRD3API}, FB30ClientAPI {$ENDIF};
|
| 1527 |
|
| 1528 |
var FDefaultFBLibrary: IFirebirdLibrary;
|
| 1529 |
|
| 1530 |
type
|
| 1531 |
|
| 1532 |
{ TFBLibrary }
|
| 1533 |
|
| 1534 |
TFBLibraryImpl = class(TFBLibrary)
|
| 1535 |
protected
|
| 1536 |
function GetFirebird3API: IFirebirdAPI; override;
|
| 1537 |
function GetLegacyFirebirdAPI: IFirebirdAPI; override;
|
| 1538 |
end;
|
| 1539 |
|
| 1540 |
function TFBLibraryImpl.GetFirebird3API: IFirebirdAPI;
|
| 1541 |
begin
|
| 1542 |
{$IFDEF USEFIREBIRD3API}
|
| 1543 |
Result := TFB30ClientAPI.Create(self);
|
| 1544 |
{$ELSE}
|
| 1545 |
Result := nil;
|
| 1546 |
{$ENDIF}
|
| 1547 |
end;
|
| 1548 |
|
| 1549 |
function TFBLibraryImpl.GetLegacyFirebirdAPI: IFirebirdAPI;
|
| 1550 |
begin
|
| 1551 |
{$IFDEF USELEGACYFIREBIRDAPI}
|
| 1552 |
Result := TFB25ClientAPI.Create(self);
|
| 1553 |
{$ELSE}
|
| 1554 |
Result := nil;
|
| 1555 |
{$ENDIF}
|
| 1556 |
end;
|
| 1557 |
|
| 1558 |
function FirebirdAPI: IFirebirdAPI;
|
| 1559 |
begin
|
| 1560 |
if FDefaultFBLibrary = nil then
|
| 1561 |
CheckIBLoaded;
|
| 1562 |
Result := FDefaultFBLibrary.GetFirebirdAPI;
|
| 1563 |
end;
|
| 1564 |
|
| 1565 |
function TryIBLoad: Boolean;
|
| 1566 |
var fblib: IFirebirdLibrary;
|
| 1567 |
begin
|
| 1568 |
Result := FDefaultFBLibrary <> nil;
|
| 1569 |
try
|
| 1570 |
if not Result then
|
| 1571 |
begin
|
| 1572 |
fblib := TFBLibraryImpl.Create;
|
| 1573 |
if (fblib <> nil) and (fblib.GetFirebirdAPI <> nil) then
|
| 1574 |
FDefaultFBLibrary := fblib;
|
| 1575 |
Result := FDefaultFBLibrary <> nil;
|
| 1576 |
end;
|
| 1577 |
except
|
| 1578 |
SysUtils.showexception(ExceptObject,ExceptAddr);
|
| 1579 |
Result := false;
|
| 1580 |
end;
|
| 1581 |
end;
|
| 1582 |
|
| 1583 |
procedure CheckIBLoaded;
|
| 1584 |
begin
|
| 1585 |
if not TryIBLoad then
|
| 1586 |
IBError(ibxeInterBaseMissing, [nil]);
|
| 1587 |
end;
|
| 1588 |
|
| 1589 |
function LoadFBLibrary(aLibPathName: string): IFirebirdLibrary;
|
| 1590 |
var fblib: IFirebirdLibrary;
|
| 1591 |
begin
|
| 1592 |
if trim(aLibPathName) = '' then
|
| 1593 |
begin
|
| 1594 |
CheckIBLoaded;
|
| 1595 |
Result := FDefaultFBLibrary;
|
| 1596 |
end
|
| 1597 |
else
|
| 1598 |
begin
|
| 1599 |
fblib := TFBLibraryImpl.GetFBLibrary(aLibPathName);
|
| 1600 |
if (fblib = nil) or (fblib.GetFirebirdAPI = nil) then
|
| 1601 |
IBError(ibxeInterBaseMissing, [nil]);
|
| 1602 |
Result := fblib;
|
| 1603 |
end;
|
| 1604 |
end;
|
| 1605 |
|
| 1606 |
{ EIBError }
|
| 1607 |
|
| 1608 |
constructor EIBError.Create(ASQLCode: Long; Msg: AnsiString);
|
| 1609 |
begin
|
| 1610 |
inherited Create(Msg);
|
| 1611 |
FSQLCode := ASQLCode;
|
| 1612 |
end;
|
| 1613 |
|
| 1614 |
{ EIBInterBaseError }
|
| 1615 |
|
| 1616 |
constructor EIBInterBaseError.Create(aStatus: IStatus);
|
| 1617 |
begin
|
| 1618 |
inherited Create(aStatus.Getsqlcode,aStatus.GetMessage);
|
| 1619 |
FIBErrorCode := aStatus.GetIBErrorCode;
|
| 1620 |
FStatus := aStatus.Clone;
|
| 1621 |
end;
|
| 1622 |
|
| 1623 |
constructor EIBInterBaseError.Create(ASQLCode: Long; AIBErrorCode: Long;
|
| 1624 |
Msg: AnsiString);
|
| 1625 |
begin
|
| 1626 |
inherited Create(ASQLCode,Msg);
|
| 1627 |
FIBErrorCode := AIBErrorCode;
|
| 1628 |
end;
|
| 1629 |
|
| 1630 |
{$ifdef NEEDNULLFUNCTION}
|
| 1631 |
function Null: Variant; // Null standard constant
|
| 1632 |
begin
|
| 1633 |
VarClearProc(TVarData(Result));
|
| 1634 |
TVarData(Result).VType := varnull;
|
| 1635 |
end;
|
| 1636 |
{$endif}
|
| 1637 |
|
| 1638 |
initialization
|
| 1639 |
FDefaultFBLibrary := nil;
|
| 1640 |
|
| 1641 |
finalization
|
| 1642 |
FDefaultFBLibrary := nil;
|
| 1643 |
|
| 1644 |
end.
|
| 1645 |
|
