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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 - 2018 }
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{ }
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{************************************************************************}
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unit IBTable;
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{$Mode Delphi}
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{$codepage UTF8}
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interface
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uses SysUtils, Classes, DB, IB, IBCustomDataSet,
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IBSQL, IBUtils;
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type
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{ TIBTable }
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TIBTableType = (ttSystem, ttView);
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TIBTableTypes = set of TIBTableType;
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TIndexName = String;
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TIBTable = class;
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TIBTable = class(TIBCustomDataSet)
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private
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FSystemTable: Boolean;
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FMultiTableView: Boolean;
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FMasterLink: TMasterDataLink;
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FMasterFieldsList: TStringList;
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FDetailFieldsList: TStringList;
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FIndexDefs: TIndexDefs;
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FDefaultIndex: Boolean;
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FReadOnly: Boolean;
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FFieldsIndex: Boolean;
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FTableName: String;
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FIndexName: TIndexName;
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FRegenerateSQL: Boolean;
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FNameList: TStrings;
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FSwitchingIndex: Boolean;
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FPrimaryIndexFields: string;
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FTableTypes: TIBTableTypes;
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FStoreDefs: boolean;
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WhereAllRefreshSQL: TStrings;
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WhereDBKeyRefreshSQL: TStrings;
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WherePrimaryRefreshSQL: TStrings;
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function GetIndexFieldCount: Integer;
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function GetIndexField(Index: Integer): TField;
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procedure MasterChanged(Sender: TObject);
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procedure MasterDisabled(Sender: TObject);
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procedure SetDataSource(Value: TDataSource);
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procedure SetIndexField(Index: Integer; Value: TField);
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procedure SetIndexFieldNames(const Value: string);
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procedure GenerateSQL;
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procedure GenerateUpdateSQL;
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procedure SwitchToIndex();
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procedure InternalTableRefresh();
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function GetTableNames: TStrings;
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procedure GetTableNamesFromServer;
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procedure SetTableTypes(
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const Value: TIBTableTypes);
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function InternalGotoDBKey(DBKey: TIBDBKey): Boolean;
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function FormatFieldsList(Value: string): string;
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function GetCurrentDBKey: TIBDBKey;
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function InternalGetUpdatable: Boolean;
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function GetExists: Boolean;
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procedure SetIndexDefs(Value: TIndexDefs);
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procedure ExtractLinkFields;
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function IndexDefsStored: Boolean;
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function GetMasterFields: string;
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procedure SetMasterFields(const Value: string);
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function GetIndexFieldNames: string;
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function GetIndexName: string;
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procedure SetIndexName(const Value: string);
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procedure SetParams;
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procedure SetReadOnly(Value: Boolean);
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procedure SetTableName(Value: String);
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procedure SetIndex(const Value: string; FieldsIndex: Boolean);
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procedure ResetSQLStatements;
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procedure Reopen;
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protected
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procedure DoOnNewRecord; override;
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procedure GetIndexParams(const IndexName: string; FieldsIndex: Boolean;
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var IndexedName: string);
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function GetCanModify: Boolean; override;
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procedure UpdateIndexDefs; override;
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procedure DataEvent(Event: TDataEvent; Info: Ptrint); override;
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procedure DefChanged(Sender: TObject); virtual;
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function GetDataSource: TDataSource; override;
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procedure InitFieldDefs; override;
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procedure InternalClose; override;
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procedure InternalOpen; override;
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procedure InternalRefresh; override;
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procedure SetFiltered(Value: Boolean); override;
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procedure SetFilterText(const Value: string); override;
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procedure SetFilterOptions(Value: TFilterOptions); override;
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procedure InternalRefreshRow; override;
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function GetMasterDetailDelay: integer; override;
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procedure SetMasterDetailDelay(AValue: integer); override;
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public
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constructor Create(AOwner: TComponent); override;
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destructor Destroy; override;
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procedure AddIndex(const Name, Fields: string; Options: TIndexOptions;
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const DescFields: string = '');
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procedure CreateTable;
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procedure DeleteIndex(const Name: string);
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procedure DeleteTable;
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procedure EmptyTable;
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procedure GetDetailLinkFields(MasterFields, DetailFields: TList); virtual;
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procedure GetIndexNames(List: TStrings);
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procedure GotoCurrent(Table: TIBTable);
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property CurrentDBKey: TIBDBKey read GetCurrentDBKey;
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property Exists: Boolean read GetExists;
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property IndexFieldCount: Integer read GetIndexFieldCount;
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property IndexFields[Index: Integer]: TField read GetIndexField write SetIndexField;
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property SelectStmtHandle;
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property TableNames: TStrings read GetTableNames;
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published
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property AutoCommit;
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property Active;
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property BufferChunks;
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property CachedUpdates;
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property DataSetCloseAction;
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// property Constraints stored ConstraintsStored;
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property DefaultIndex: Boolean read FDefaultIndex write FDefaultIndex default True;
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property EnableStatistics;
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property Filter;
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property Filtered;
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property GeneratorField;
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property IndexDefs: TIndexDefs read FIndexDefs write SetIndexDefs stored IndexDefsStored;
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property IndexFieldNames: string read GetIndexFieldNames write SetIndexFieldNames;
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property IndexName: string read GetIndexName write SetIndexName;
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property MasterFields: string read GetMasterFields write SetMasterFields;
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property MasterSource: TDataSource read GetDataSource write SetDataSource;
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property MasterDetailDelay;
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property ReadOnly: Boolean read FReadOnly write SetReadOnly default False;
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property StoreDefs: Boolean read FStoreDefs write FStoreDefs default False;
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property TableName: String read FTableName write SetTableName;
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property TableTypes: TIBTableTypes read FTableTypes write SetTableTypes default [];
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property UpdateObject;
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property UniDirectional;
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property BeforeDatabaseDisconnect;
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property AfterDatabaseDisconnect;
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property DatabaseFree;
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property BeforeTransactionEnd;
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property AfterTransactionEnd;
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property TransactionFree;
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property OnFilterRecord;
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end;
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implementation
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uses FBMessages, fpTimer;
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type
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{ TIBMasterDataLink }
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TIBMasterDataLink = class(TMasterDataLink)
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private
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FDelayTimerValue: integer;
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FTimer: TFPTimer;
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procedure HandleRefreshTimer(Sender: TObject);
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protected
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procedure DoMasterChange; override;
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public
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constructor Create(ADataSet: TDataSet); override;
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destructor Destroy; override;
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property DelayTimerValue: integer {in Milliseconds}
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read FDelayTimerValue write FDelayTimerValue;
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end;
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{ TIBMasterDataLink }
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procedure TIBMasterDataLink.HandleRefreshTimer(Sender: TObject);
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begin
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FTimer.Interval := 0;
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inherited DoMasterChange;
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end;
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procedure TIBMasterDataLink.DoMasterChange;
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begin
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if FDelayTimerValue = 0 then
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inherited DoMasterChange
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else
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begin
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FTimer.Interval := FDelayTimerValue;
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FTimer.StartTimer;
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end;
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end;
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constructor TIBMasterDataLink.Create(ADataSet: TDataSet);
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begin
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inherited Create(ADataSet);
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FTimer := TFPTimer.Create(nil);
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FTimer.Enabled := true;
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FTimer.Interval := 0;
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FTimer.OnTimer := HandleRefreshTimer;
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FDelayTimerValue := 0;
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end;
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destructor TIBMasterDataLink.Destroy;
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begin
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if assigned(FTimer) then FTimer.Free;
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inherited Destroy;
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end;
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{ TIBTable }
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constructor TIBTable.Create(AOwner: TComponent);
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begin
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inherited Create(AOwner);
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FNameList := TStringList.Create;
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FSwitchingIndex := False;
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FIndexDefs := TIndexDefs.Create(Self);
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WhereAllRefreshSQL := TStringList.Create;
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WhereDBKeyRefreshSQL := TStringList.Create;
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WherePrimaryRefreshSQL := TStringList.Create;
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FDefaultIndex := True;
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FRegenerateSQL := True;
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FMasterFieldsList := TStringList.Create;
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FDetailFieldsList := TStringList.Create;
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FMasterLink := TIBMasterDataLink.Create(Self);
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FMasterLink.OnMasterChange := MasterChanged;
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FMasterLink.OnMasterDisable := MasterDisabled;
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QRefresh.OnSQLChanging := nil;
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QDelete.OnSQLChanging := nil;
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QInsert.OnSQLChanging := nil;
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QModify.OnSQLChanging := nil;
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end;
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destructor TIBTable.Destroy;
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begin
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FNameList.Free;
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FIndexDefs.Free;
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FMasterFieldsList.Free;
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FDetailFieldsList.Free;
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FMasterLink.Free;
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WhereAllRefreshSQL.Free;
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WhereDBKeyRefreshSQL.Free;
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WherePrimaryRefreshSQL.Free;
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inherited Destroy;
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end;
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procedure TIBTable.InternalClose;
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begin
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DataEvent(dePropertyChange, 0);
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inherited InternalClose;
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end;
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procedure TIBTable.InternalOpen;
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begin
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if FTableName = '' then IBError(ibxeNoTableName, [nil]);
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ActivateConnection;
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ActivateTransaction;
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if FRegenerateSQL then
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begin
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InternalUnprepare;
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GenerateSQL;
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if not FReadOnly then
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GenerateUpdateSQL;
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FRegenerateSQL := False;
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end;
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{ writeln(SelectSQL.Text);
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writeln(InsertSQL.Text);
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writeln(DeleteSQL.Text);
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writeln(ModifySQL.Text); }
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SetParams;
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inherited InternalOpen;
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end;
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procedure TIBTable.InternalRefresh;
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var
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DBKey: TIBDBKey;
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begin
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DBKey := CurrentDBKey;
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Reopen;
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if DBKey.DBKey[0] <> 0 then
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InternalGotoDBKey(DBKey);
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end;
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procedure TIBTable.SetFiltered(Value: Boolean);
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begin
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if(Filtered <> Value) then
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begin
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inherited SetFiltered(value);
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if Active then
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InternalTableRefresh;
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end
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else
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inherited SetFiltered(value);
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end;
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procedure TIBTable.SetFilterText(const Value: string);
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begin
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if Filtered and (Value <> Filter) then
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begin
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inherited SetFilterText(value);
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InternalTableRefresh;
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end
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else
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inherited SetFilterText(value);
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end;
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procedure TIBTable.SetFilterOptions(Value: TFilterOptions);
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begin
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if Value <> [] then
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IBError(ibxeNotSupported, [nil]);
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end;
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procedure TIBTable.InternalRefreshRow;
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begin
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if CurrentDBKey.DBKey[0] <> 0 then
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QRefresh.SQL.Assign(WhereDBKeyRefreshSQL)
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else if WherePrimaryRefreshSQL.Text <> '' then
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QRefresh.SQL.Assign(WherePrimaryRefreshSQL)
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else
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QRefresh.SQL.Assign(WhereAllRefreshSQL);
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inherited InternalRefreshRow;
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end;
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function TIBTable.GetMasterDetailDelay: integer;
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begin
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Result := TIBMasterDataLink(FMasterLink).DelayTimerValue
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end;
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362 |
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procedure TIBTable.SetMasterDetailDelay(AValue: integer);
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begin
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365 |
TIBMasterDataLink(FMasterLink).DelayTimerValue := AValue;
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end;
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367 |
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368 |
procedure TIBTable.DefChanged(Sender: TObject);
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begin
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370 |
StoreDefs := True;
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end;
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372 |
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373 |
procedure TIBTable.InitFieldDefs;
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374 |
var
|
375 |
DidActivate: Boolean;
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376 |
Query: TIBSQL;
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377 |
begin
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378 |
if FTableName = '' then IBError(ibxeNoTableName, [nil]);
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379 |
if (InternalPrepared) then
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380 |
InternalInitFieldDefs
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else
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begin
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383 |
{Get the field defs from a simple query on the table}
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ActivateConnection;
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Query := TIBSQL.Create(self);
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try
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Query.Database := DataBase;
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Query.Transaction := Database.InternalTransaction;
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DidActivate := false;
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390 |
Query.SQL.Text := 'Select * from ' + QuoteIdentifier(DataBase.SQLDialect, FTableName);
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with Query.Transaction do
|
392 |
begin
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393 |
if not InTransaction then
|
394 |
begin
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395 |
StartTransaction;
|
396 |
DidActivate := true
|
397 |
end;
|
398 |
end;
|
399 |
Query.Prepare;
|
400 |
FieldDefsFromQuery(Query);
|
401 |
if DidActivate then
|
402 |
Query.Transaction.Rollback;
|
403 |
finally
|
404 |
Query.Free;
|
405 |
end;
|
406 |
end;
|
407 |
end;
|
408 |
|
409 |
{ Index / Ranges / Keys }
|
410 |
|
411 |
procedure TIBTable.AddIndex(const Name, Fields: string; Options: TIndexOptions;
|
412 |
const DescFields: string);
|
413 |
var
|
414 |
Query: TIBSQL;
|
415 |
FieldList: string;
|
416 |
begin
|
417 |
FieldDefs.Update;
|
418 |
if Active then begin
|
419 |
CheckBrowseMode;
|
420 |
CursorPosChanged;
|
421 |
end;
|
422 |
Query := TIBSQL.Create(self);
|
423 |
try
|
424 |
Query.Database := DataBase;
|
425 |
Query.Transaction := Transaction;
|
426 |
FieldList := FormatFieldsList(Fields);
|
427 |
if (ixPrimary in Options) then
|
428 |
begin
|
429 |
Query.SQL.Text := 'Alter Table ' + {do not localize}
|
430 |
QuoteIdentifier(Database.SQLDialect, FTableName) +
|
431 |
' Add CONSTRAINT ' + {do not localize}
|
432 |
QuoteIdentifier(Database.SQLDialect, Name)
|
433 |
+ ' Primary Key (' + {do not localize}
|
434 |
FormatFieldsList(Fields) +
|
435 |
')';
|
436 |
end
|
437 |
else if ([ixUnique, ixDescending] * Options = [ixUnique, ixDescending]) then
|
438 |
Query.SQL.Text := 'Create unique Descending Index ' + {do not localize}
|
439 |
QuoteIdentifier(Database.SQLDialect, Name) +
|
440 |
' on ' + {do not localize}
|
441 |
QuoteIdentifier(Database.SQLDialect, FTableName) +
|
442 |
' (' + FieldList + ')'
|
443 |
else if (ixUnique in Options) then
|
444 |
Query.SQL.Text := 'Create unique Index ' + {do not localize}
|
445 |
QuoteIdentifier(Database.SQLDialect, Name) +
|
446 |
' on ' + {do not localize}
|
447 |
QuoteIdentifier(Database.SQLDialect, FTableName) +
|
448 |
' (' + FieldList + ')'
|
449 |
else if (ixDescending in Options) then
|
450 |
Query.SQL.Text := 'Create Descending Index ' + {do not localize}
|
451 |
QuoteIdentifier(Database.SQLDialect, Name) +
|
452 |
' on ' + {do not localize}
|
453 |
QuoteIdentifier(Database.SQLDialect, FTableName) +
|
454 |
' (' + FieldList + ')'
|
455 |
else
|
456 |
Query.SQL.Text := 'Create Index ' + {do not localize}
|
457 |
QuoteIdentifier(Database.SQLDialect, Name) +
|
458 |
' on ' + {do not localize}
|
459 |
QuoteIdentifier(Database.SQLDialect, FTableName) +
|
460 |
' (' + FieldList + ')';
|
461 |
Query.Prepare;
|
462 |
Query.ExecQuery;
|
463 |
IndexDefs.Updated := False;
|
464 |
finally
|
465 |
Query.free
|
466 |
end;
|
467 |
end;
|
468 |
|
469 |
procedure TIBTable.DeleteIndex(const Name: string);
|
470 |
var
|
471 |
Query: TIBSQL;
|
472 |
|
473 |
procedure DeleteByIndex;
|
474 |
begin
|
475 |
Query := TIBSQL.Create(self);
|
476 |
try
|
477 |
Query.Database := DataBase;
|
478 |
Query.Transaction := Transaction;
|
479 |
Query.SQL.Text := 'Drop index ' + {do not localize}
|
480 |
QuoteIdentifier(Database.SQLDialect, Name);
|
481 |
Query.Prepare;
|
482 |
Query.ExecQuery;
|
483 |
IndexDefs.Updated := False;
|
484 |
finally
|
485 |
Query.Free;
|
486 |
end;
|
487 |
end;
|
488 |
|
489 |
function DeleteByConstraint: Boolean;
|
490 |
begin
|
491 |
Result := False;
|
492 |
Query := TIBSQL.Create(self);
|
493 |
try
|
494 |
Query.Database := DataBase;
|
495 |
Query.Transaction := Transaction;
|
496 |
Query.SQL.Text := 'Select ''foo'' from RDB$RELATION_CONSTRAINTS ' +
|
497 |
'where RDB$RELATION_NAME = ' +
|
498 |
'''' +
|
499 |
ExtractIdentifier(Database.SQLDialect,
|
500 |
QuoteIdentifier(DataBase.SQLDialect, FTableName)) +
|
501 |
''' ' +
|
502 |
' AND RDB$CONSTRAINT_NAME = ' +
|
503 |
'''' +
|
504 |
ExtractIdentifier(Database.SQLDialect,
|
505 |
QuoteIdentifier(DataBase.SQLDialect, Name)) +
|
506 |
''' ' +
|
507 |
'AND RDB$CONSTRAINT_TYPE = ''PRIMARY KEY''';
|
508 |
Query.Prepare;
|
509 |
Query.ExecQuery;
|
510 |
if not Query.EOF then
|
511 |
begin
|
512 |
Query.Close;
|
513 |
Query.SQL.Text := 'Alter Table ' + {do not localize}
|
514 |
QuoteIdentifier(DataBase.SQLDialect, FTableName) +
|
515 |
' Drop Constraint ' +
|
516 |
QuoteIdentifier(DataBase.SQLDialect, Name);
|
517 |
Query.Prepare;
|
518 |
Query.ExecQuery;
|
519 |
IndexDefs.Updated := False;
|
520 |
Result := True;
|
521 |
end;
|
522 |
finally
|
523 |
Query.Free;
|
524 |
end;
|
525 |
end;
|
526 |
|
527 |
procedure DeleteByKey;
|
528 |
begin
|
529 |
Query := TIBSQL.Create(self);
|
530 |
try
|
531 |
Query.Database := DataBase;
|
532 |
Query.Transaction := Transaction;
|
533 |
Query.SQL.Text := 'Select RDB$CONSTRAINT_NAME from RDB$RELATION_CONSTRAINTS ' +
|
534 |
'where RDB$RELATION_NAME = ' +
|
535 |
'''' +
|
536 |
ExtractIdentifier(Database.SQLDialect,
|
537 |
QuoteIdentifier(DataBase.SQLDialect, FTableName)) +
|
538 |
''' ' +
|
539 |
'AND RDB$INDEX_NAME = ' +
|
540 |
'''' +
|
541 |
ExtractIdentifier(Database.SQLDialect,
|
542 |
QuoteIdentifier(DataBase.SQLDialect, Name)) +
|
543 |
''' ' +
|
544 |
'AND RDB$CONSTRAINT_TYPE = ''PRIMARY KEY''';
|
545 |
Query.Prepare;
|
546 |
Query.ExecQuery;
|
547 |
if not Query.EOF then
|
548 |
begin
|
549 |
Query.Close;
|
550 |
Query.SQL.Text := 'Alter Table ' + {do not localize}
|
551 |
QuoteIdentifier(DataBase.SQLDialect, FTableName) +
|
552 |
' Drop Constraint ' +
|
553 |
QuoteIdentifier(DataBase.SQLDialect, Query.FieldByName('RDB$CONSTRAINT_NAME').AsString);
|
554 |
Query.Prepare;
|
555 |
Query.ExecQuery;
|
556 |
IndexDefs.Updated := False;
|
557 |
end;
|
558 |
finally
|
559 |
Query.Free;
|
560 |
end;
|
561 |
end;
|
562 |
|
563 |
begin
|
564 |
if Active then
|
565 |
CheckBrowseMode;
|
566 |
IndexDefs.Update;
|
567 |
if (Pos('RDB$PRIMARY', Name) <> 0 ) then {do not localize} {mbcs ok}
|
568 |
DeleteByKey
|
569 |
else if not DeleteByConstraint then
|
570 |
DeleteByIndex;
|
571 |
end;
|
572 |
|
573 |
function TIBTable.GetIndexFieldNames: string;
|
574 |
begin
|
575 |
if FFieldsIndex then Result := FIndexName else Result := '';
|
576 |
end;
|
577 |
|
578 |
function TIBTable.GetIndexName: string;
|
579 |
begin
|
580 |
if FFieldsIndex then Result := '' else Result := FIndexName;
|
581 |
end;
|
582 |
|
583 |
procedure TIBTable.GetIndexNames(List: TStrings);
|
584 |
begin
|
585 |
IndexDefs.Update;
|
586 |
IndexDefs.GetItemNames(List);
|
587 |
end;
|
588 |
|
589 |
procedure TIBTable.GetIndexParams(const IndexName: string;
|
590 |
FieldsIndex: Boolean; var IndexedName: string);
|
591 |
var
|
592 |
IndexStr: TIndexName;
|
593 |
begin
|
594 |
if IndexName <> '' then
|
595 |
begin
|
596 |
IndexDefs.Update;
|
597 |
IndexStr := IndexName;
|
598 |
if FieldsIndex then
|
599 |
IndexStr := IndexDefs.FindIndexForFields(IndexName).Name;
|
600 |
end;
|
601 |
IndexedName := IndexStr;
|
602 |
end;
|
603 |
|
604 |
procedure TIBTable.SetIndexDefs(Value: TIndexDefs);
|
605 |
begin
|
606 |
IndexDefs.Assign(Value);
|
607 |
end;
|
608 |
|
609 |
procedure TIBTable.SetIndex(const Value: string; FieldsIndex: Boolean);
|
610 |
begin
|
611 |
if Active then CheckBrowseMode;
|
612 |
if (FIndexName <> Value) or (FFieldsIndex <> FieldsIndex) then
|
613 |
begin
|
614 |
FIndexName := Value;
|
615 |
FFieldsIndex := FieldsIndex;
|
616 |
if Active then
|
617 |
begin
|
618 |
SwitchToIndex;
|
619 |
end;
|
620 |
end;
|
621 |
end;
|
622 |
|
623 |
procedure TIBTable.SetIndexFieldNames(const Value: string);
|
624 |
begin
|
625 |
SetIndex(Value, Value <> '');
|
626 |
end;
|
627 |
|
628 |
procedure TIBTable.SetIndexName(const Value: string);
|
629 |
begin
|
630 |
SetIndex(Value, False);
|
631 |
end;
|
632 |
|
633 |
procedure TIBTable.UpdateIndexDefs;
|
634 |
var
|
635 |
Opts: TIndexOptions;
|
636 |
Flds: string;
|
637 |
Query, SubQuery: TIBSQL;
|
638 |
fn: string;
|
639 |
aField: TFieldDef;
|
640 |
begin
|
641 |
if not (csReading in ComponentState) then begin
|
642 |
if not Active and not FSwitchingIndex then
|
643 |
FieldDefs.Update;
|
644 |
IndexDefs.Clear;
|
645 |
Database.InternalTransaction.StartTransaction;
|
646 |
Query := TIBSQL.Create(self);
|
647 |
try
|
648 |
FPrimaryIndexFields := '';
|
649 |
Query.GoToFirstRecordOnExecute := False;
|
650 |
Query.Database := DataBase;
|
651 |
Query.Transaction := Database.InternalTransaction;
|
652 |
Query.SQL.Text :=
|
653 |
'Select I.RDB$INDEX_NAME, I.RDB$UNIQUE_FLAG, I.RDB$INDEX_TYPE, ' + {do not localize}
|
654 |
'I.RDB$SEGMENT_COUNT, S.RDB$FIELD_NAME from RDB$INDICES I, ' + {do not localize}
|
655 |
'RDB$INDEX_SEGMENTS S where I.RDB$INDEX_NAME = S.RDB$INDEX_NAME '+ {do not localize}
|
656 |
'and I.RDB$RELATION_NAME = ' + '''' + {do not localize}
|
657 |
ExtractIdentifier(Database.SQLDialect,
|
658 |
QuoteIdentifier(DataBase.SQLDialect, FTableName)) + '''';
|
659 |
Query.Prepare;
|
660 |
Query.ExecQuery;
|
661 |
while (not Query.EOF) and Query.Next do
|
662 |
begin
|
663 |
with IndexDefs.AddIndexDef do
|
664 |
begin
|
665 |
Name := TrimRight(Query.FieldByName('RDB$INDEX_NAME').AsString); {do not localize}
|
666 |
Opts := [];
|
667 |
if Pos ('RDB$PRIMARY', Name) = 1 then Include(Opts, ixPrimary); {do not localize} {mbcs ok}
|
668 |
if Query.FieldByName('RDB$UNIQUE_FLAG').AsInteger = 1 then Include(Opts, ixUnique); {do not localize}
|
669 |
if Query.FieldByName('RDB$INDEX_TYPE').AsInteger = 2 then Include(Opts, ixDescending); {do not localize}
|
670 |
Options := Opts;
|
671 |
if (Query.FieldByName('RDB$SEGMENT_COUNT').AsInteger = 1) then {do not localize}
|
672 |
begin
|
673 |
fn := Trim(Query.FieldByName('RDB$FIELD_NAME').AsString); {do not localize}
|
674 |
aField := GetFieldDefFromAlias(fn);
|
675 |
if assigned(aField) then
|
676 |
Fields := aField.Name
|
677 |
else
|
678 |
Fields := fn;
|
679 |
end
|
680 |
else begin
|
681 |
SubQuery := TIBSQL.Create(self);
|
682 |
try
|
683 |
SubQuery.GoToFirstRecordOnExecute := False;
|
684 |
SubQuery.Database := DataBase;
|
685 |
SubQuery.Transaction := Database.InternalTransaction;
|
686 |
SubQuery.SQL.Text :=
|
687 |
'Select RDB$FIELD_NAME from RDB$INDEX_SEGMENTS where RDB$INDEX_NAME = ' + {do not localize}
|
688 |
'''' +
|
689 |
ExtractIdentifier(Database.SQLDialect,
|
690 |
QuoteIdentifier(DataBase.SQLDialect, Name)) +
|
691 |
'''' + 'ORDER BY RDB$FIELD_POSITION'; {do not localize}
|
692 |
SubQuery.Prepare;
|
693 |
SubQuery.ExecQuery;
|
694 |
Flds := '';
|
695 |
while (not SubQuery.EOF) and SubQuery.Next do
|
696 |
begin
|
697 |
fn := TrimRight(SubQuery.FieldByName('RDB$FIELD_NAME').AsString); {do not localize}
|
698 |
aField := GetFieldDefFromAlias(fn);
|
699 |
if assigned(aField) then
|
700 |
fn := aField.Name;
|
701 |
if (Flds = '') then
|
702 |
Flds := fn
|
703 |
else begin
|
704 |
Query.Next;
|
705 |
Flds := Flds + ';' + fn;
|
706 |
end;
|
707 |
end;
|
708 |
Fields := Flds;
|
709 |
finally
|
710 |
SubQuery.Free;
|
711 |
end;
|
712 |
end;
|
713 |
if (ixDescending in Opts) then
|
714 |
DescFields := Fields;
|
715 |
if ixPrimary in Opts then
|
716 |
FPrimaryIndexFields := Fields;
|
717 |
end;
|
718 |
end;
|
719 |
finally
|
720 |
Query.Free;
|
721 |
Database.InternalTransaction.Commit;
|
722 |
end;
|
723 |
end;
|
724 |
end;
|
725 |
|
726 |
function TIBTable.GetExists: Boolean;
|
727 |
var
|
728 |
Query: TIBSQL;
|
729 |
begin
|
730 |
Result := Active;
|
731 |
if Result or (TableName = '') then Exit;
|
732 |
Database.InternalTransaction.StartTransaction;
|
733 |
Query := TIBSQL.Create(self);
|
734 |
try
|
735 |
Query.Database := DataBase;
|
736 |
Query.Transaction := Database.InternalTransaction;
|
737 |
Query.SQL.Text :=
|
738 |
'Select USER from RDB$RELATIONS where RDB$RELATION_NAME = ' + {do not localize}
|
739 |
'''' +
|
740 |
ExtractIdentifier(Database.SQLDialect,
|
741 |
QuoteIdentifier(DataBase.SQLDialect, FTableName)) + '''';
|
742 |
Query.Prepare;
|
743 |
Query.ExecQuery;
|
744 |
Result := not Query.EOF;
|
745 |
finally
|
746 |
Query.Free;
|
747 |
Database.InternalTransaction.Commit;
|
748 |
end;
|
749 |
end;
|
750 |
|
751 |
procedure TIBTable.GotoCurrent(Table: TIBTable);
|
752 |
begin
|
753 |
CheckBrowseMode;
|
754 |
Table.CheckBrowseMode;
|
755 |
if (Database <> Table.Database) or
|
756 |
(CompareText(TableName, Table.TableName) <> 0) then
|
757 |
IBError(ibxeTableNameMismatch, [nil]);
|
758 |
Table.UpdateCursorPos;
|
759 |
InternalGotoDBKey(Table.CurrentDBKey);
|
760 |
DoBeforeScroll;
|
761 |
Resync([rmExact, rmCenter]);
|
762 |
DoAfterScroll;
|
763 |
end;
|
764 |
|
765 |
|
766 |
procedure TIBTable.CreateTable;
|
767 |
var
|
768 |
FieldList: string;
|
769 |
|
770 |
procedure InitFieldsList;
|
771 |
var
|
772 |
I: Integer;
|
773 |
begin
|
774 |
InitFieldDefsFromFields;
|
775 |
for I := 0 to FieldDefs.Count - 1 do begin
|
776 |
if ( I > 0) then
|
777 |
FieldList := FieldList + ', ';
|
778 |
with FieldDefs[I] do
|
779 |
begin
|
780 |
case DataType of
|
781 |
ftString:
|
782 |
FieldList := FieldList +
|
783 |
QuoteIdentifier(DataBase.SQLDialect, Name) +
|
784 |
' VARCHAR(' + IntToStr(Size) + ')'; {do not localize}
|
785 |
ftFixedChar:
|
786 |
FieldList := FieldList +
|
787 |
QuoteIdentifier(DataBase.SQLDialect, Name) +
|
788 |
' CHAR(' + IntToStr(Size) + ')'; {do not localize}
|
789 |
ftBoolean:
|
790 |
FieldList := FieldList +
|
791 |
QuoteIdentifier(DataBase.SQLDialect, Name) +
|
792 |
' BOOLEAN'; {do not localize}
|
793 |
ftSmallint, ftWord:
|
794 |
FieldList := FieldList +
|
795 |
QuoteIdentifier(DataBase.SQLDialect, Name) +
|
796 |
' SMALLINT'; {do not localize}
|
797 |
ftInteger:
|
798 |
FieldList := FieldList +
|
799 |
QuoteIdentifier(DataBase.SQLDialect, Name) +
|
800 |
' INTEGER'; {do not localize}
|
801 |
ftFloat, ftCurrency:
|
802 |
FieldList := FieldList +
|
803 |
QuoteIdentifier(DataBase.SQLDialect, Name) +
|
804 |
' DOUBLE PRECISION'; {do not localize}
|
805 |
ftBCD: begin
|
806 |
if (Database.SQLDialect = 1) then begin
|
807 |
if (Precision > 9) then
|
808 |
IBError(ibxeFieldUnsupportedType,[nil]);
|
809 |
if (Precision <= 4) then
|
810 |
Precision := 9;
|
811 |
end;
|
812 |
if (Precision <= 4 ) then
|
813 |
FieldList := FieldList +
|
814 |
QuoteIdentifier(DataBase.SQLDialect, Name) +
|
815 |
' Numeric(18, 4)' {do not localize}
|
816 |
else
|
817 |
FieldList := FieldList +
|
818 |
QuoteIdentifier(DataBase.SQLDialect, Name) +
|
819 |
' Numeric(' + IntToStr(Precision) + ', 4)'; {do not localize}
|
820 |
end;
|
821 |
ftDate:
|
822 |
FieldList := FieldList +
|
823 |
QuoteIdentifier(DataBase.SQLDialect, Name) +
|
824 |
' DATE'; {do not localize}
|
825 |
ftTime:
|
826 |
FieldList := FieldList +
|
827 |
QuoteIdentifier(DataBase.SQLDialect, Name) +
|
828 |
' TIME'; {do not localize}
|
829 |
ftDateTime:
|
830 |
if (Database.SQLDialect = 1) then
|
831 |
FieldList := FieldList +
|
832 |
QuoteIdentifier(DataBase.SQLDialect, Name) +
|
833 |
' DATE' {do not localize}
|
834 |
else
|
835 |
FieldList := FieldList +
|
836 |
QuoteIdentifier(DataBase.SQLDialect, Name) +
|
837 |
' TIMESTAMP'; {do not localize}
|
838 |
ftLargeInt:
|
839 |
if (Database.SQLDialect = 1) then
|
840 |
IBError(ibxeFieldUnsupportedType,[nil])
|
841 |
else
|
842 |
FieldList := FieldList +
|
843 |
QuoteIdentifier(DataBase.SQLDialect, Name) +
|
844 |
' Numeric(18, 0)'; {do not localize}
|
845 |
ftBlob, ftMemo:
|
846 |
FieldList := FieldList +
|
847 |
QuoteIdentifier(DataBase.SQLDialect, Name) +
|
848 |
' BLOB SUB_TYPE 1'; {do not localize}
|
849 |
ftBytes, ftVarBytes, ftGraphic..ftTypedBinary:
|
850 |
FieldList := FieldList +
|
851 |
QuoteIdentifier(DataBase.SQLDialect, Name) +
|
852 |
' BLOB SUB_TYPE 0'; {do not localize}
|
853 |
ftUnknown, ftADT, ftArray, ftReference, ftDataSet,
|
854 |
ftCursor, ftWideString, ftAutoInc:
|
855 |
IBError(ibxeFieldUnsupportedType,[nil]);
|
856 |
else
|
857 |
IBError(ibxeFieldUnsupportedType,[nil]);
|
858 |
end;
|
859 |
if faRequired in Attributes then
|
860 |
FieldList := FieldList + ' NOT NULL'; {do not localize}
|
861 |
end;
|
862 |
end;
|
863 |
end;
|
864 |
|
865 |
procedure InternalCreateTable;
|
866 |
var
|
867 |
I: Integer;
|
868 |
Query: TIBSQL;
|
869 |
begin
|
870 |
if (FieldList = '') then
|
871 |
IBError(ibxeFieldUnsupportedType,[nil]);
|
872 |
Query := TIBSQL.Create(self);
|
873 |
try
|
874 |
Query.Database := Database;
|
875 |
Query.transaction := Transaction;
|
876 |
Query.SQL.Text := 'Create Table ' +
|
877 |
QuoteIdentifier(DataBase.SQLDialect, FTableName) +
|
878 |
' (' + FieldList; {do not localize}
|
879 |
for I := 0 to IndexDefs.Count - 1 do
|
880 |
with IndexDefs[I] do
|
881 |
if ixPrimary in Options then
|
882 |
begin
|
883 |
Query.SQL.Text := Query.SQL.Text + ', CONSTRAINT ' +
|
884 |
QuoteIdentifier(DataBase.SQLDialect, Name) +
|
885 |
' Primary Key (' +
|
886 |
FormatFieldsList(Fields) +
|
887 |
')';
|
888 |
end;
|
889 |
Query.SQL.Text := Query.SQL.Text + ')';
|
890 |
Query.Prepare;
|
891 |
Query.ExecQuery;
|
892 |
finally
|
893 |
Query.Free;
|
894 |
end;
|
895 |
end;
|
896 |
|
897 |
procedure InternalCreateIndex;
|
898 |
var
|
899 |
I: Integer;
|
900 |
begin
|
901 |
for I := 0 to IndexDefs.Count - 1 do
|
902 |
with IndexDefs[I] do
|
903 |
if not (ixPrimary in Options) then
|
904 |
AddIndex(Name, Fields, Options);
|
905 |
end;
|
906 |
|
907 |
begin
|
908 |
CheckInactive;
|
909 |
InitFieldsList;
|
910 |
InternalCreateTable;
|
911 |
InternalCreateIndex;
|
912 |
end;
|
913 |
|
914 |
procedure TIBTable.DeleteTable;
|
915 |
var
|
916 |
Query: TIBSQL;
|
917 |
begin
|
918 |
CheckInactive;
|
919 |
Query := TIBSQL.Create(self);
|
920 |
try
|
921 |
Query.Database := DataBase;
|
922 |
Query.Transaction := Transaction;
|
923 |
Query.SQL.Text := 'drop table ' + {do not localize}
|
924 |
QuoteIdentifier(DataBase.SQLDialect, FTableName);
|
925 |
Query.Prepare;
|
926 |
Query.ExecQuery;
|
927 |
finally
|
928 |
Query.Free;
|
929 |
end;
|
930 |
end;
|
931 |
|
932 |
procedure TIBTable.EmptyTable;
|
933 |
var
|
934 |
Query: TIBSQL;
|
935 |
begin
|
936 |
if Active then
|
937 |
CheckBrowseMode;
|
938 |
Query := TIBSQL.Create(self);
|
939 |
try
|
940 |
Query.Database := DataBase;
|
941 |
Query.Transaction := Transaction;
|
942 |
Query.SQL.Text := 'delete from ' + {do not localize}
|
943 |
QuoteIdentifier(DataBase.SQLDialect, FTableName);
|
944 |
Query.Prepare;
|
945 |
Query.ExecQuery;
|
946 |
if Active then
|
947 |
begin
|
948 |
ClearBuffers;
|
949 |
DataEvent(deDataSetChange, 0);
|
950 |
end;
|
951 |
finally
|
952 |
Query.Free;
|
953 |
end;
|
954 |
end;
|
955 |
|
956 |
procedure TIBTable.DataEvent(Event: TDataEvent; Info: Ptrint);
|
957 |
begin
|
958 |
if Event = dePropertyChange then begin
|
959 |
IndexDefs.Updated := False;
|
960 |
FRegenerateSQL := True;
|
961 |
end;
|
962 |
inherited DataEvent(Event, Info);
|
963 |
end;
|
964 |
|
965 |
{ Informational & Property }
|
966 |
|
967 |
function TIBTable.GetCanModify: Boolean;
|
968 |
begin
|
969 |
Result := True;
|
970 |
if (FTableName = '') or FReadOnly
|
971 |
or FSystemTable or FMultiTableView then
|
972 |
Result := False;
|
973 |
end;
|
974 |
|
975 |
function TIBTable.InternalGetUpdatable: Boolean;
|
976 |
var
|
977 |
Query : TIBSQL;
|
978 |
begin
|
979 |
Database.InternalTransaction.StartTransaction;
|
980 |
Query := TIBSQL.Create(self);
|
981 |
try
|
982 |
Query.Database := DataBase;
|
983 |
Query.Transaction := Database.InternalTransaction;
|
984 |
Query.SQL.Text := 'Select RDB$SYSTEM_FLAG, RDB$DBKEY_LENGTH ' + {do not localize}
|
985 |
'from RDB$RELATIONS where RDB$RELATION_NAME = ' + {do not localize}
|
986 |
'''' +
|
987 |
ExtractIdentifier(Database.SQLDialect,
|
988 |
QuoteIdentifier(DataBase.SQLDialect, FTableName)) + '''';
|
989 |
Query.Prepare;
|
990 |
Query.ExecQuery;
|
991 |
if (Query.Fields[0].AsInteger <> 0) or
|
992 |
(Query.Fields[1].AsInteger <> 8) then
|
993 |
Result := False
|
994 |
else
|
995 |
Result := True;
|
996 |
finally
|
997 |
Query.Free;
|
998 |
Database.InternalTransaction.Commit;
|
999 |
end;
|
1000 |
end;
|
1001 |
|
1002 |
function TIBTable.IndexDefsStored: Boolean;
|
1003 |
begin
|
1004 |
Result := StoreDefs and (IndexDefs.Count > 0);
|
1005 |
end;
|
1006 |
|
1007 |
procedure TIBTable.SetParams;
|
1008 |
var
|
1009 |
i: Integer;
|
1010 |
begin
|
1011 |
if (MasterSource = nil) or (MasterSource.DataSet = nil) or
|
1012 |
(not MasterSource.DataSet.Active) or (FMasterFieldsList.Count = 0) then
|
1013 |
exit;
|
1014 |
for i := 0 to FMasterFieldsList.Count - 1 do
|
1015 |
QSelect.Params.ByName(FMasterFieldsList.Strings[i]).Value :=
|
1016 |
MasterSource.DataSet.FieldByName(FMasterFieldsList.Strings[i]).Value;
|
1017 |
end;
|
1018 |
|
1019 |
procedure TIBTable.MasterChanged(Sender: TObject);
|
1020 |
begin
|
1021 |
CheckBrowseMode;
|
1022 |
SetParams;
|
1023 |
ReQuery;
|
1024 |
end;
|
1025 |
|
1026 |
procedure TIBTable.MasterDisabled(Sender: TObject);
|
1027 |
begin
|
1028 |
DataEvent(dePropertyChange, 0);
|
1029 |
ReQuery;
|
1030 |
end;
|
1031 |
|
1032 |
function TIBTable.GetDataSource: TDataSource;
|
1033 |
begin
|
1034 |
Result := FMasterLink.DataSource;
|
1035 |
end;
|
1036 |
|
1037 |
procedure TIBTable.SetDataSource(Value: TDataSource);
|
1038 |
begin
|
1039 |
if IsLinkedTo(Value) then IBError(ibxeCircularDataLink, [Self]);
|
1040 |
if FMasterLink.DataSource <> Value then
|
1041 |
DataEvent(dePropertyChange, 0);
|
1042 |
FMasterLink.DataSource := Value;
|
1043 |
end;
|
1044 |
|
1045 |
function TIBTable.GetMasterFields: string;
|
1046 |
begin
|
1047 |
Result := FMasterLink.FieldNames;
|
1048 |
end;
|
1049 |
|
1050 |
procedure TIBTable.SetMasterFields(const Value: string);
|
1051 |
begin
|
1052 |
if FMasterLink.FieldNames <> Value then
|
1053 |
DataEvent(dePropertyChange, 0);
|
1054 |
FMasterLink.FieldNames := Value;
|
1055 |
end;
|
1056 |
|
1057 |
procedure TIBTable.DoOnNewRecord;
|
1058 |
var
|
1059 |
I: Integer;
|
1060 |
begin
|
1061 |
if FMasterLink.Active and (FMasterLink.Fields.Count > 0) then
|
1062 |
for I := 0 to FMasterLink.Fields.Count - 1 do
|
1063 |
IndexFields[I] := TField(FMasterLink.Fields[I]);
|
1064 |
inherited DoOnNewRecord;
|
1065 |
end;
|
1066 |
|
1067 |
function TIBTable.FormatFieldsList(Value: string): string;
|
1068 |
var
|
1069 |
FieldName: string;
|
1070 |
i: Integer;
|
1071 |
begin
|
1072 |
if Database.SQLDialect = 1 then begin
|
1073 |
Value := QuoteIdentifier(Database.SQLDialect, Value);
|
1074 |
Result := StringReplace (Value, ';', ', ', [rfReplaceAll]);
|
1075 |
end
|
1076 |
else begin
|
1077 |
i := 1;
|
1078 |
Result := '';
|
1079 |
while i <= Length(Value) do
|
1080 |
begin
|
1081 |
FieldName := ExtractFieldName(Value, i);
|
1082 |
if Result = '' then
|
1083 |
Result := QuoteIdentifier(Database.SQLDialect, FieldName)
|
1084 |
else
|
1085 |
Result := Result + ', ' + QuoteIdentifier(Database.SQLDialect, FieldName);
|
1086 |
end;
|
1087 |
end;
|
1088 |
end;
|
1089 |
|
1090 |
procedure TIBTable.ExtractLinkFields;
|
1091 |
var
|
1092 |
i: Integer;
|
1093 |
DetailFieldNames: String;
|
1094 |
begin
|
1095 |
FMasterFieldsList.Clear;
|
1096 |
FDetailFieldsList.Clear;
|
1097 |
i := 1;
|
1098 |
while i <= Length(MasterFields) do
|
1099 |
FMasterFieldsList.Add(ExtractFieldName(MasterFields, i));
|
1100 |
i := 1;
|
1101 |
if IndexFieldNames = '' then
|
1102 |
DetailFieldNames := FPrimaryIndexFields
|
1103 |
else
|
1104 |
DetailFieldNames := IndexFieldNames;
|
1105 |
while i <= Length(DetailFieldNames) do
|
1106 |
FDetailFieldsList.Add(ExtractFieldName(DetailFieldNames, i));
|
1107 |
end;
|
1108 |
|
1109 |
procedure TIBTable.GetDetailLinkFields(MasterFields, DetailFields: TList);
|
1110 |
var
|
1111 |
i: Integer;
|
1112 |
Idx: TIndexDef;
|
1113 |
begin
|
1114 |
MasterFields.Clear;
|
1115 |
DetailFields.Clear;
|
1116 |
if (MasterSource <> nil) and (MasterSource.DataSet <> nil) and
|
1117 |
(Self.MasterFields <> '') then
|
1118 |
begin
|
1119 |
Idx := nil;
|
1120 |
MasterSource.DataSet.GetFieldList(MasterFields, Self.MasterFields);
|
1121 |
UpdateIndexDefs;
|
1122 |
if IndexName <> '' then
|
1123 |
Idx := IndexDefs.Find(IndexName)
|
1124 |
else if IndexFieldNames <> '' then
|
1125 |
Idx := IndexDefs.GetIndexForFields(IndexFieldNames, False)
|
1126 |
else
|
1127 |
for i := 0 to IndexDefs.Count - 1 do
|
1128 |
if ixPrimary in IndexDefs[i].Options then
|
1129 |
begin
|
1130 |
Idx := IndexDefs[i];
|
1131 |
break;
|
1132 |
end;
|
1133 |
if Idx <> nil then
|
1134 |
GetFieldList(DetailFields, Idx.Fields);
|
1135 |
end;
|
1136 |
end;
|
1137 |
|
1138 |
procedure TIBTable.SetReadOnly(Value: Boolean);
|
1139 |
begin
|
1140 |
CheckInactive;
|
1141 |
FReadOnly := Value;
|
1142 |
end;
|
1143 |
|
1144 |
procedure TIBTable.SetTableName(Value: String);
|
1145 |
begin
|
1146 |
if not (csReading in ComponentState) then
|
1147 |
begin
|
1148 |
CheckInactive;
|
1149 |
if Value <> FTableName then
|
1150 |
begin
|
1151 |
ResetSQLStatements;
|
1152 |
FRegenerateSQL := True;
|
1153 |
FTableName := Value;
|
1154 |
IndexName := '';
|
1155 |
IndexFieldNames := '';
|
1156 |
FPrimaryIndexFields := '';
|
1157 |
DataEvent(dePropertyChange, 0);
|
1158 |
end;
|
1159 |
end
|
1160 |
else if Value <> FTableName then
|
1161 |
FTableName := Value;
|
1162 |
end;
|
1163 |
|
1164 |
function TIBTable.GetIndexField(Index: Integer): TField;
|
1165 |
var
|
1166 |
I, Count: Integer;
|
1167 |
FieldNames, FieldName: String;
|
1168 |
begin
|
1169 |
Result := nil;
|
1170 |
FieldName := '';
|
1171 |
FieldNames := IndexFieldNames;
|
1172 |
if FieldNames = '' then
|
1173 |
begin
|
1174 |
for I := 0 to IndexDefs.Count - 1 do
|
1175 |
if (IndexDefs[i].Name = FIndexName) then
|
1176 |
begin
|
1177 |
FieldNames := IndexDefs[i].Fields;
|
1178 |
break;
|
1179 |
end;
|
1180 |
end;
|
1181 |
for I := 0 to Index do
|
1182 |
begin
|
1183 |
Count := Pos(';', FieldNames); {mbcs OK}
|
1184 |
if Count = 0 then
|
1185 |
FieldName := FieldNames
|
1186 |
else begin
|
1187 |
FieldName := Copy(FieldNames, 0, Count - 1);
|
1188 |
System.Delete(FieldNames, 1, Count);
|
1189 |
end;
|
1190 |
end;
|
1191 |
if FieldName <> '' then
|
1192 |
Result := FieldByName(FieldName)
|
1193 |
else
|
1194 |
IBError(ibxeIndexFieldMissing, [nil]);
|
1195 |
end;
|
1196 |
|
1197 |
|
1198 |
procedure TIBTable.SetIndexField(Index: Integer; Value: TField);
|
1199 |
begin
|
1200 |
GetIndexField(Index).Assign(Value);
|
1201 |
end;
|
1202 |
|
1203 |
function TIBTable.GetIndexFieldCount: Integer;
|
1204 |
var
|
1205 |
I, Index: Integer;
|
1206 |
FieldNames: String;
|
1207 |
done: Boolean;
|
1208 |
begin
|
1209 |
FieldNames := IndexFieldNames;
|
1210 |
if FieldNames = '' then
|
1211 |
begin
|
1212 |
for I := 0 to IndexDefs.Count - 1 do
|
1213 |
if (IndexDefs[i].Name = FIndexName) then
|
1214 |
begin
|
1215 |
FieldNames := IndexDefs[i].Fields;
|
1216 |
break;
|
1217 |
end;
|
1218 |
end;
|
1219 |
if FieldNames = '' then
|
1220 |
Result := 0
|
1221 |
else
|
1222 |
begin
|
1223 |
done := False;
|
1224 |
Result := 1;
|
1225 |
while not done do
|
1226 |
begin
|
1227 |
Index := Pos(';', FieldNames); {mbcs ok}
|
1228 |
if Index <> 0 then
|
1229 |
begin
|
1230 |
System.Delete(FieldNames, 1, Index);
|
1231 |
Inc(Result);
|
1232 |
end else
|
1233 |
done := True;
|
1234 |
end;
|
1235 |
end;
|
1236 |
end;
|
1237 |
|
1238 |
function TIBTable.GetTableNames: TStrings;
|
1239 |
begin
|
1240 |
FNameList.clear;
|
1241 |
GetTableNamesFromServer;
|
1242 |
Result := FNameList;
|
1243 |
end;
|
1244 |
|
1245 |
procedure TIBTable.GetTableNamesFromServer;
|
1246 |
var
|
1247 |
Query : TIBSQL;
|
1248 |
begin
|
1249 |
if not (csReading in ComponentState) then begin
|
1250 |
ActivateConnection;
|
1251 |
Database.InternalTransaction.StartTransaction;
|
1252 |
Query := TIBSQL.Create(self);
|
1253 |
try
|
1254 |
Query.GoToFirstRecordOnExecute := False;
|
1255 |
Query.Database := DataBase;
|
1256 |
Query.Transaction := Database.InternalTransaction;
|
1257 |
if (TableTypes * [ttSystem, ttView] = [ttSystem, ttView]) then
|
1258 |
Query.SQL.Text := 'Select RDB$RELATION_NAME from RDB$RELATIONS' {do not localize}
|
1259 |
else if ttSystem in TableTypes then
|
1260 |
Query.SQL.Text := 'Select RDB$RELATION_NAME from RDB$RELATIONS' + {do not localize}
|
1261 |
' where RDB$VIEW_BLR is NULL' {do not localize}
|
1262 |
else if ttView in TableTypes then
|
1263 |
Query.SQL.Text := 'Select RDB$RELATION_NAME from RDB$RELATIONS' + {do not localize}
|
1264 |
' where RDB$SYSTEM_FLAG = 0' {do not localize}
|
1265 |
else
|
1266 |
Query.SQL.Text := 'Select RDB$RELATION_NAME from RDB$RELATIONS' + {do not localize}
|
1267 |
' where RDB$VIEW_BLR is NULL and RDB$SYSTEM_FLAG = 0'; {do not localize}
|
1268 |
Query.Prepare;
|
1269 |
Query.ExecQuery;
|
1270 |
while (not Query.EOF) and Query.Next do
|
1271 |
FNameList.Add (TrimRight(Query.Fields[0].AsString));
|
1272 |
finally
|
1273 |
Query.Free;
|
1274 |
Database.InternalTransaction.Commit;
|
1275 |
end;
|
1276 |
end;
|
1277 |
end;
|
1278 |
|
1279 |
procedure TIBTable.SwitchToIndex();
|
1280 |
begin
|
1281 |
FSwitchingIndex := True;
|
1282 |
InternalTableRefresh;
|
1283 |
FSwitchingIndex := False;
|
1284 |
end;
|
1285 |
|
1286 |
procedure TIBTable.InternalTableRefresh();
|
1287 |
var
|
1288 |
DBKey: TIBDBKey;
|
1289 |
begin
|
1290 |
CheckActive;
|
1291 |
DBKey := CurrentDBKey;
|
1292 |
FRegenerateSQL := True;
|
1293 |
Reopen;
|
1294 |
if DBKey.DBKey[0] <> 0 then
|
1295 |
InternalGotoDBKey(DBKey);
|
1296 |
end;
|
1297 |
|
1298 |
procedure TIBTable.GenerateSQL;
|
1299 |
var
|
1300 |
i: Integer;
|
1301 |
SQL: TStrings;
|
1302 |
OrderByStr: string;
|
1303 |
bWhereClausePresent: Boolean;
|
1304 |
fn: string;
|
1305 |
aField: TFieldDef;
|
1306 |
begin
|
1307 |
bWhereClausePresent := False;
|
1308 |
Database.CheckActive;
|
1309 |
Transaction.CheckInTransaction;
|
1310 |
if IndexDefs.Updated = False then
|
1311 |
IndexDefs.Update;
|
1312 |
if IndexFieldNames <> '' then
|
1313 |
OrderByStr := FormatFieldsList(IndexFieldNames)
|
1314 |
else if IndexName <> '' then
|
1315 |
OrderByStr := FormatFieldsList(IndexDefs[IndexDefs.Indexof (IndexName)].Fields)
|
1316 |
else if FDefaultIndex and (FPrimaryIndexFields <> '') then
|
1317 |
OrderByStr := FormatFieldsList(FPrimaryIndexFields);
|
1318 |
SQL := TStringList.Create;
|
1319 |
SQL.Text := 'select ' + {do not localize}
|
1320 |
QuoteIdentifier(DataBase.SQLDialect, FTableName) + '.*, ' {do not localize}
|
1321 |
+ 'RDB$DB_KEY as IBX_INTERNAL_DBKEY from ' {do not localize}
|
1322 |
+ QuoteIdentifier(DataBase.SQLDialect, FTableName);
|
1323 |
if Filtered and (Filter <> '') then
|
1324 |
begin
|
1325 |
SQL.Text := SQL.Text + ' where ' + Filter; {do not localize}
|
1326 |
bWhereClausePresent := True;
|
1327 |
end;
|
1328 |
if (MasterSource <> nil) and (MasterSource.DataSet <> nil) and (MasterFields <> '') then
|
1329 |
begin
|
1330 |
if bWhereClausePresent then
|
1331 |
SQL.Text := SQL.Text + ' AND ' {do not localize}
|
1332 |
else
|
1333 |
SQL.Text := SQL.Text + ' WHERE '; {do not localize}
|
1334 |
ExtractLinkfields;
|
1335 |
if FDetailFieldsList.Count < FMasterFieldsList.Count then
|
1336 |
IBError(ibxeUnknownError, [nil]);
|
1337 |
for i := 0 to FMasterFieldsList.Count - 1 do
|
1338 |
begin
|
1339 |
if i > 0 then
|
1340 |
SQL.Text := SQL.Text + 'AND ';
|
1341 |
aField := FieldDefs.Find(FDetailFieldsList.Strings[i]);
|
1342 |
if assigned(aField) then
|
1343 |
fn := GetDBAliasName(aField.FieldNo)
|
1344 |
else
|
1345 |
fn := FDetailFieldsList.Strings[i]; {something wrong if we get here - but should word}
|
1346 |
SQL.Text := SQL.Text +
|
1347 |
QuoteIdentifier(DataBase.SQLDialect, fn) + ' = :' + FMasterFieldsList.Strings[i];
|
1348 |
end;
|
1349 |
end;
|
1350 |
if OrderByStr <> '' then
|
1351 |
SQL.Text := SQL.Text + ' order by ' + OrderByStr; {do not localize}
|
1352 |
SelectSQL.Assign(SQL);
|
1353 |
RefreshSQL.Text := 'select ' + {do not localize}
|
1354 |
QuoteIdentifier(DataBase.SQLDialect, FTableName) + '.*, ' {do not localize}
|
1355 |
+ 'RDB$DB_KEY as IBX_INTERNAL_DBKEY from ' {do not localize}
|
1356 |
+ QuoteIdentifier(DataBase.SQLDialect, FTableName) +
|
1357 |
' where RDB$DB_KEY = :IBX_INTERNAL_DBKEY'; {do not localize}
|
1358 |
WhereDBKeyRefreshSQL.Assign(RefreshSQL);
|
1359 |
InternalPrepare;
|
1360 |
SQL.Free;
|
1361 |
end;
|
1362 |
|
1363 |
procedure TIBTable.GenerateUpdateSQL;
|
1364 |
var
|
1365 |
InsertFieldList, InsertParamList, UpdateFieldList: string;
|
1366 |
WherePrimaryFieldList, WhereAllFieldList,
|
1367 |
InsertReturningFieldList, UpdateReturningFieldList: string;
|
1368 |
|
1369 |
procedure GenerateFieldLists;
|
1370 |
var
|
1371 |
I: Integer;
|
1372 |
AllowReturningClause: boolean;
|
1373 |
begin
|
1374 |
{Is database Firebird 2.1 or later?}
|
1375 |
AllowReturningClause := (DatabaseInfo.ODSMajorVersion > 11) or
|
1376 |
((DatabaseInfo.ODSMajorVersion = 11) and (DatabaseInfo.ODSMinorVersion >= 1));
|
1377 |
for I := 0 to FieldDefs.Count - 1 do begin
|
1378 |
with TIBFieldDef(FieldDefs[I]) do begin
|
1379 |
if AllowReturningClause then
|
1380 |
begin
|
1381 |
if (faReadOnly in Attributes) or IdentityColumn then
|
1382 |
begin
|
1383 |
if InsertReturningFieldList <> '' then
|
1384 |
InsertReturningFieldList := InsertReturningFieldList + ', ' +
|
1385 |
QuoteIdentifier(DataBase.SQLDialect, GetDBAliasName(FieldNo))
|
1386 |
else
|
1387 |
InsertReturningFieldList := ' RETURNING ' +
|
1388 |
QuoteIdentifier(DataBase.SQLDialect, GetDBAliasName(FieldNo))
|
1389 |
end;
|
1390 |
if (faReadOnly in Attributes) then
|
1391 |
begin
|
1392 |
if UpdateReturningFieldList <> '' then
|
1393 |
UpdateReturningFieldList := UpdateReturningFieldList + ', ' +
|
1394 |
QuoteIdentifier(DataBase.SQLDialect, GetDBAliasName(FieldNo))
|
1395 |
else
|
1396 |
UpdateReturningFieldList := ' RETURNING ' +
|
1397 |
QuoteIdentifier(DataBase.SQLDialect, GetDBAliasName(FieldNo))
|
1398 |
end;
|
1399 |
end;
|
1400 |
if not (InternalCalcField or (faReadOnly in Attributes) or
|
1401 |
(DataType = ftUnknown)) then
|
1402 |
begin
|
1403 |
if not IdentityColumn then
|
1404 |
begin
|
1405 |
if ( InsertFieldList <> '' ) then begin
|
1406 |
InsertFieldList := InsertFieldList + ', ';
|
1407 |
InsertParamList := InsertParamList + ', ';
|
1408 |
end;
|
1409 |
InsertFieldList := InsertFieldList +
|
1410 |
QuoteIdentifier(DataBase.SQLDialect, GetDBAliasName(FieldNo));
|
1411 |
InsertParamList := InsertParamList + ':' + Name;
|
1412 |
end;
|
1413 |
if (UpdateFieldList <> '') then begin
|
1414 |
UpdateFieldList := UpdateFieldList + ', ';
|
1415 |
if (DataType <> ftBlob) and (DataType <>ftMemo) then
|
1416 |
WhereAllFieldList := WhereAllFieldList + ' AND ';
|
1417 |
end;
|
1418 |
UpdateFieldList := UpdateFieldList +
|
1419 |
QuoteIdentifier(DataBase.SQLDialect, GetDBAliasName(FieldNo)) +
|
1420 |
' = :' + Name;
|
1421 |
if (DataType <> ftBlob) and (DataType <>ftMemo) then
|
1422 |
WhereAllFieldList := WhereAllFieldList +
|
1423 |
QuoteIdentifier(DataBase.SQLDialect, GetDBAliasName(FieldNo)) + ' = :' + Name;
|
1424 |
end;
|
1425 |
end;
|
1426 |
end;
|
1427 |
end;
|
1428 |
|
1429 |
procedure GenerateWherePrimaryFieldList;
|
1430 |
var
|
1431 |
i: Integer;
|
1432 |
tmp, fn: String;
|
1433 |
aField: TFieldDef;
|
1434 |
begin
|
1435 |
i := 1;
|
1436 |
while i <= Length(FPrimaryIndexFields) do
|
1437 |
begin
|
1438 |
tmp := ExtractFieldName(FPrimaryIndexFields, i);
|
1439 |
aField := FieldDefs.Find(tmp);
|
1440 |
if assigned(aField) then
|
1441 |
fn := GetDBAliasName(aField.FieldNo)
|
1442 |
else
|
1443 |
fn := tmp; {something wrong if we get here - but will work in most cases}
|
1444 |
tmp :=
|
1445 |
QuoteIdentifier(DataBase.SQLDialect, fn) + ' = :' +
|
1446 |
QuoteIdentifier(DataBase.SQLDialect, tmp);{do not localize}
|
1447 |
if WherePrimaryFieldList <> '' then
|
1448 |
WherePrimaryFieldList :=
|
1449 |
WherePrimaryFieldList + ' AND ' + tmp
|
1450 |
else
|
1451 |
WherePrimaryFieldList := tmp;
|
1452 |
end;
|
1453 |
end;
|
1454 |
|
1455 |
begin
|
1456 |
if InternalGetUpdatable = False then
|
1457 |
FReadOnly := True
|
1458 |
else
|
1459 |
begin
|
1460 |
DeleteSQL.Text := 'delete from ' + {do not localize}
|
1461 |
QuoteIdentifier(DataBase.SQLDialect, FTableName) +
|
1462 |
' where RDB$DB_KEY = ' + ':IBX_INTERNAL_DBKEY'; {do not localize}
|
1463 |
GenerateFieldLists;
|
1464 |
InsertSQL.Text := 'insert into ' + {do not localize}
|
1465 |
QuoteIdentifier(DataBase.SQLDialect, FTableName) +
|
1466 |
' (' + InsertFieldList + {do not localize}
|
1467 |
') values (' + InsertParamList + ')' + InsertReturningFieldList; {do not localize}
|
1468 |
ModifySQL.Text := 'update ' +
|
1469 |
QuoteIdentifier(DataBase.SQLDialect, FTableName) +
|
1470 |
' set ' + UpdateFieldList + {do not localize}
|
1471 |
' where RDB$DB_KEY = :IBX_INTERNAL_DBKEY' + UpdateReturningFieldList; {do not localize}
|
1472 |
WhereAllRefreshSQL.Text := 'select ' + {do not localize}
|
1473 |
QuoteIdentifier(DataBase.SQLDialect, FTableName) + '.*, '
|
1474 |
+ 'RDB$DB_KEY as IBX_INTERNAL_DBKEY from ' {do not localize}
|
1475 |
+ QuoteIdentifier(DataBase.SQLDialect, FTableName) +
|
1476 |
' where ' + WhereAllFieldList ; {do not localize}
|
1477 |
if FPrimaryIndexFields <> '' then
|
1478 |
begin
|
1479 |
GenerateWherePrimaryFieldList;
|
1480 |
WherePrimaryRefreshSQL.Text := 'select ' + {do not localize}
|
1481 |
QuoteIdentifier(DataBase.SQLDialect, FTableName) + '.*, ' {do not localize}
|
1482 |
+ 'RDB$DB_KEY as IBX_INTERNAL_DBKEY from ' {do not localize}
|
1483 |
+ QuoteIdentifier(DataBase.SQLDialect, FTableName) +
|
1484 |
' where ' + WherePrimaryFieldList; {do not localize}
|
1485 |
end;
|
1486 |
try
|
1487 |
InternalPrepare;
|
1488 |
except
|
1489 |
FReadonly := True;
|
1490 |
end;
|
1491 |
end;
|
1492 |
end;
|
1493 |
|
1494 |
procedure TIBTable.ResetSQLStatements;
|
1495 |
begin
|
1496 |
SelectSQL.Text := '';
|
1497 |
DeleteSQL.Text := '';
|
1498 |
InsertSQL.Text := '';
|
1499 |
ModifySQL.Text := '';
|
1500 |
RefreshSQL.Text := '';
|
1501 |
end;
|
1502 |
|
1503 |
procedure TIBTable.SetTableTypes(
|
1504 |
const Value: TIBTableTypes);
|
1505 |
begin
|
1506 |
FTableTypes := Value;
|
1507 |
end;
|
1508 |
|
1509 |
function TIBTable.InternalGotoDBKey(DBKey: TIBDBKey): Boolean;
|
1510 |
|
1511 |
function DBKeyCompare (DBKey1, DBKey2: TIBDBKey): Boolean;
|
1512 |
var
|
1513 |
I: Integer;
|
1514 |
begin
|
1515 |
for I := 0 to 7 do
|
1516 |
if (DBKey1.DBKey[i] <> DBKey2.DBKey[i]) then begin
|
1517 |
result := False;
|
1518 |
exit;
|
1519 |
end;
|
1520 |
result := True;
|
1521 |
end;
|
1522 |
begin
|
1523 |
CheckActive;
|
1524 |
DisableControls;
|
1525 |
try
|
1526 |
result := False;
|
1527 |
First;
|
1528 |
while ((not result) and (not EOF)) do begin
|
1529 |
if (DBKeyCompare (DBKey, PRecordData(GetActiveBuf)^.rdDBKey)) then
|
1530 |
result := True
|
1531 |
else
|
1532 |
Next;
|
1533 |
end;
|
1534 |
if not result then
|
1535 |
First
|
1536 |
else
|
1537 |
CursorPosChanged;
|
1538 |
finally
|
1539 |
EnableControls;
|
1540 |
end;
|
1541 |
end;
|
1542 |
|
1543 |
function TIBTable.GetCurrentDBKey: TIBDBKey;
|
1544 |
var
|
1545 |
Buf: pChar;
|
1546 |
begin
|
1547 |
CheckActive;
|
1548 |
buf := GetActiveBuf;
|
1549 |
if Buf <> nil then
|
1550 |
Result := PRecordData(Buf)^.rdDBKey
|
1551 |
else
|
1552 |
Result.DBKey[0] := 0;
|
1553 |
end;
|
1554 |
|
1555 |
procedure TIBTable.Reopen;
|
1556 |
begin
|
1557 |
DisableControls;
|
1558 |
try
|
1559 |
if Active then
|
1560 |
begin
|
1561 |
SetState(dsInactive);
|
1562 |
CloseCursor;
|
1563 |
OpenCursor(false);
|
1564 |
SetState(dsBrowse);
|
1565 |
end;
|
1566 |
finally
|
1567 |
EnableControls;
|
1568 |
end;
|
1569 |
end;
|
1570 |
|
1571 |
end.
|