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(*
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* IBX For Lazarus (Firebird Express)
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*
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* The contents of this file are subject to the Initial Developer's
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* Public License Version 1.0 (the "License"); you may not use this
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* file except in compliance with the License. You may obtain a copy
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* of the License here:
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*
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* http://www.firebirdsql.org/index.php?op=doc&id=idpl
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing rights
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* and limitations under the License.
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*
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* The Initial Developer of the Original Code is Tony Whyman.
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*
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* The Original Code is (C) 2014-2017 Tony Whyman, MWA Software
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* (http://www.mwasoftware.co.uk).
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*
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* All Rights Reserved.
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*
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* Contributor(s): ______________________________________.
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*
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*)
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unit ibxscript;
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{$mode objfpc}{$H+}
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{$codepage UTF8}
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interface
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uses Classes, IBDatabase, IBSQL, IB, IBDataOutput, IBUtils;
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type
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TOnNextLine = procedure(Sender: TObject; Line: string) of object;
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{ TSQLStatementReader }
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TSQLStatementReader = class(TSQLXMLReader)
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private
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type
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TSQLState = (stDefault, stInStmt, stInBlock, stInArrayDim, stInDeclare);
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private
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FDatabase: TIBDatabase;
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FHasBegin: boolean;
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FOnNextLine: TOnNextLine;
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FTerminator: char;
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FTransaction: TIBTransaction;
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protected
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procedure EchoNextLine(aLine: string);
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function GetAttachment: IAttachment; override;
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function GetTransaction: ITransaction; override;
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public
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constructor Create;
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function GetNextStatement(var stmt: string) : boolean; virtual;
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property HasBegin: boolean read FHasBegin;
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property Terminator: char read FTerminator write FTerminator default DefaultTerminator;
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property OnNextLine: TOnNextLine read FOnNextLine write FOnNextLine;
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property Database: TIBDatabase read FDatabase write FDatabase;
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property Transaction: TIBTransaction read FTransaction write FTransaction;
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end;
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{ TBatchSQLStatementReader }
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{This SQL Reader supports non-interactive parsing of a text file, stream or
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lines of text.}
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TBatchSQLStatementReader = class(TSQLStatementReader)
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private
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FInStream: TStream;
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FOwnsInStream: boolean;
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FLineIndex: integer;
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FIndex: integer;
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FCurLine: string;
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protected
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function GetChar: char; override;
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function GetErrorPrefix: string; override;
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public
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procedure Reset; override;
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procedure SetStreamSource(Lines: TStrings); overload;
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procedure SetStreamSource(S: TStream); overload;
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procedure SetStreamSource(FileName: string); overload;
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procedure SetStringStreamSource(S: string);
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end;
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{ TInteractiveSQLStatementReader }
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{This SQL reader supports interactive parsing of commands and
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SQL statements entered at a console}
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TInteractiveSQLStatementReader = class(TSQLStatementReader)
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private
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FPrompt: string;
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FContinuePrompt: string;
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FTerminated: boolean;
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FLine: string;
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FLineIndex: integer;
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FNextStatement: boolean;
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function GetNextLine(var Line: string):boolean;
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protected
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function GetChar: char; override;
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function GetErrorPrefix: string; override;
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public
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constructor Create(aPrompt: string='SQL>'; aContinue: string = 'CON>');
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function GetNextStatement(var stmt: string) : boolean; override;
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property Terminated: boolean read FTerminated write FTerminated;
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end;
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TGetParamValue = procedure(Sender: TObject; ParamName: string; var BlobID: TISC_QUAD) of object;
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TLogEvent = procedure(Sender: TObject; Msg: string) of Object;
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TOnSelectSQL = procedure (Sender: TObject; SQLText: string) of object;
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TOnSetStatement = procedure(Sender: TObject; command, aValue, stmt: string; var Done: boolean) of object;
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TOnCreateDatabase = procedure (Sender: TObject; var DatabaseFileName: string) of object;
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{ TCustomIBXScript }
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{This is the main script processing engine and can be customised by subclassing
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and defining the symbol stream appropriate for use.
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The RunScript function is used to invoke the processing of a symbol stream. Each
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SQL statement is extracted one by one. If it is recognised as a built in command
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by "ProcessStatement" then it is actioned directly. Otherwise, it is executed
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using the TIBSQL component. Note that SQL validation by this class is only partial
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and is sufficient only to parse the SQL into statements. The Firebird engine does
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the rest when the statement is executed.}
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TCustomIBXScript = class(TComponent)
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private
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FEcho: boolean;
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FSQLReader: TSQLStatementReader;
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FDatabase: TIBDatabase;
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FDataOutputFormatter: TIBCustomDataOutput;
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FIgnoreCreateDatabase: boolean;
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FIgnoreGrants: boolean;
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FOnCreateDatabase: TOnCreateDatabase;
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FOnErrorLog: TLogEvent;
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FOnSelectSQL: TOnSelectSQL;
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FOnSetStatement: TOnSetStatement;
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FShowAffectedRows: boolean;
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FShowPerformanceStats: boolean;
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FStopOnFirstError: boolean;
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FTransaction: TIBTransaction;
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FInternalTransaction: TIBTransaction;
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FISQL: TIBSQL;
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FGetParamValue: TGetParamValue;
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FOnOutputLog: TLogEvent;
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FAutoDDL: boolean;
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procedure DoCommit;
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procedure DoReconnect;
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function GetOnProgressEvent: TOnProgressEvent;
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function GetTransaction: TIBTransaction;
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procedure SetDatabase(AValue: TIBDatabase);
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procedure SetDataOutputFormatter(AValue: TIBCustomDataOutput);
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procedure SetOnProgressEvent(AValue: TOnProgressEvent);
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procedure SetParamValue(SQLVar: ISQLParam);
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procedure SetShowPerformanceStats(AValue: boolean);
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procedure SetTransaction(AValue: TIBTransaction);
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protected
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procedure Add2Log(const Msg: string; IsError: boolean=true); virtual;
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procedure ExecSQL(stmt: string);
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procedure EchoNextLine(Sender: TObject; Line: string);
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procedure Notification(AComponent: TComponent; Operation: TOperation); override;
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function ProcessStatement(stmt: string): boolean; virtual;
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function ProcessStream: boolean;
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procedure SetSQLStatementReader(SQLStatementReader: TSQLStatementReader);
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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 DefaultSelectSQLHandler(aSQLText: string);
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property SQLStatementReader: TSQLStatementReader read FSQLReader;
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published
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property Database: TIBDatabase read FDatabase write SetDatabase;
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property DataOutputFormatter: TIBCustomDataOutput read FDataOutputFormatter
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write SetDataOutputFormatter;
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property AutoDDL: boolean read FAutoDDL write FAutoDDL default true;
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property Echo: boolean read FEcho write FEcho default true; {Echo Input to Log}
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property IgnoreGrants: boolean read FIgnoreGrants write FIgnoreGrants;
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property IgnoreCreateDatabase: boolean read FIgnoreCreateDatabase write FIgnoreCreateDatabase;
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property Transaction: TIBTransaction read GetTransaction write SetTransaction;
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property ShowAffectedRows: boolean read FShowAffectedRows write FShowAffectedRows;
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property ShowPerformanceStats: boolean read FShowPerformanceStats write SetShowPerformanceStats;
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property StopOnFirstError: boolean read FStopOnFirstError write FStopOnFirstError default true;
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property GetParamValue: TGetParamValue read FGetParamValue write FGetParamValue; {resolve parameterized queries}
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property OnOutputLog: TLogEvent read FOnOutputLog write FOnOutputLog; {Log handler}
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property OnErrorLog: TLogEvent read FOnErrorLog write FOnErrorLog;
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property OnProgressEvent: TOnProgressEvent read GetOnProgressEvent write SetOnProgressEvent; {Progress Bar Support}
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property OnSelectSQL: TOnSelectSQL read FOnSelectSQL write FOnSelectSQL; {Handle Select SQL Statements}
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property OnSetStatement: TOnSetStatement read FOnSetStatement write FOnSetStatement;
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property OnCreateDatabase: TOnCreateDatabase read FOnCreateDatabase write FOnCreateDatabase;
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end;
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{
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TIBXScript: runs an SQL script in the specified file or stream. The text is parsed
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into SQL statements which are executed in turn. The intention is to be ISQL
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compatible but with extensions:
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* All DML and DDL Statements are supported.
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* CREATE DATABASE, DROP DATABASE, CONNECT and COMMIT are supported.
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* The following SET statements are supported:
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SET SQL DIALECT
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SET TERM
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SET AUTODDL
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SET BAIL
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SET ECHO
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SET COUNT
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SET STATS
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SET NAMES <character set>
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* New Command: RECONNECT. Performs a commit followed by disconnecting and
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reconnecting to the database.
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* Procedure Bodies (BEGIN .. END blocks) are self-delimiting and do not need
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an extra terminator. If a terminator is present, this is treated as an
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empty statement. The result is ISQL compatible, but does not require the
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use of SET TERM.
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* DML statements may have arguments in IBX format (e.g UPDATE MYTABLE Set data = :mydata).
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Arguments are valid only for BLOB columns and are resolved using the GetParamValue
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event. This returns the blobid to be used. A typical use of the event is to
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read binary data from a file, save it in a blob stream and return the blob id.
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Select SQL statements are not directly supported but can be handled by an external
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handler (OnSelectSQL event). If the handler is not present then an exception
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is raised if a Select SQL statement is found.
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Properties:
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* Database: Link to TIBDatabase component
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* Transaction: Link to Transaction. Defaults to internaltransaction (concurrency, wait)
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* AutoDDL: When true DDL statements are automatically committed after execution
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* Echo: boolean. When true, all SQL statements are echoed to log
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* StopOnFirstError: boolean. When true the script engine terminates on the first
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SQL Error.
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* IgnoreGrants: When true, grant statements are silently discarded. This can be
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useful when applying a script using the Embedded Server.
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* ShowPerformanceStats: When true, performance statistics (in ISQL format) are
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written to the log after a DML statement is executed
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* DataOutputFormatter: Identifies a Data Output Formatter component used to format
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the results of executing a Select Statement
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Events:
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* GetParamValue: called when an SQL parameter is found (in PSQL :name format).
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This is only called for blob fields. Handler should return the BlobID to be
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used as the parameter value. If not present an exception is raised when a
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parameter is found.
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* OnOutputLog: Called to write SQL Statements to the log (stdout)
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* OnErrorLog: Called to write all other messages to the log (stderr)
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* OnProgressEvent: Progress bar support. If Reset is true the value is maximum
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value of progress bar. Otherwise called to step progress bar.
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* OnSelectSQL: handler for select SQL statements. If not present, select SQL
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statements result in an exception.
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* OnSetStatement: called to process a SET command that has not already been
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handled by TIBXScript.
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The RunScript function is used to execute an SQL Script and may be called
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multiple times.
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}
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{ TIBXScript }
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TIBXScript = class(TCustomIBXScript)
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public
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constructor Create(aOwner: TComponent); override;
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{use RunScript instead of PerformUpdate}
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function PerformUpdate(SQLFile: string; aAutoDDL: boolean): boolean; overload; deprecated;
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function PerformUpdate(SQLStream: TStream; aAutoDDL: boolean): boolean; overload; deprecated;
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function RunScript(SQLFile: string): boolean; overload;
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function RunScript(SQLStream: TStream): boolean; overload;
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function RunScript(SQLLines: TStrings): boolean; overload;
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function ExecSQLScript(sql: string): boolean;
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end;
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resourcestring
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sInvalidSetStatement = 'Invalid %s Statement - %s';
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sInvalidCharacterSet = 'Unrecognised character set name - "%s"';
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sOnLineError = 'On Line %d Character %d: ';
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implementation
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uses Sysutils, RegExpr;
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resourcestring
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sNoSelectSQL = 'Select SQL Statements are not supported';
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sNoParamQueries = 'Parameterised Queries are not supported';
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sResolveQueryParam = 'Resolving Query Parameter: %s';
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sStatementError = 'Error processing SQL statement: %s %s - for statement "%s"';
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{ TSQLStatementReader }
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procedure TSQLStatementReader.EchoNextLine(aLine: string);
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begin
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if assigned(FOnNextLine) then
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OnNextLine(self,aLine);
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end;
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function TSQLStatementReader.GetAttachment: IAttachment;
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begin
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if FDatabase <> nil then
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Result := FDatabase.Attachment
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else
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Result := nil;
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end;
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function TSQLStatementReader.GetTransaction: ITransaction;
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begin
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if FTransaction <> nil then
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Result := FTransaction.TransactionIntf
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else
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Result := nil;
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end;
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constructor TSQLStatementReader.Create;
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begin
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inherited Create;
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Terminator := DefaultTerminator;
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end;
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function TSQLStatementReader.GetNextStatement(var stmt: string): boolean;
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var State: TSQLState;
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Nested: integer;
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token: TSQLTokens;
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EndOfStatement: boolean;
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begin
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FHasBegin := false;
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EndOfStatement := false;
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Nested := 0;
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stmt := '';
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State := stDefault;
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while not EOF and not EndOfStatement do
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begin
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token := GetNextToken;
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// writeln(token,' ',TokenText,' ',Terminator);
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case State of
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stDefault:
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{ignore everything before a reserved word}
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if (token <= high(TSQLReservedWords)) or (token = sqltIdentifier) then
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begin
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State := stInStmt;
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stmt += TokenText;
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end;
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stInStmt:
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begin
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case token of
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sqltBegin:
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begin
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FHasBegin := true;
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State := stInBlock;
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Nested := 1;
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stmt += TokenText;
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end;
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sqltDeclare:
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begin
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State := stInDeclare;
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stmt += TokenText;
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end;
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sqltOpenSquareBracket:
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begin
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State := stInArrayDim;
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stmt += TokenText;
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end;
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sqltComment:
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stmt += '/*' + TokenText + '*/';
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sqltCommentLine:
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stmt += '/*' + TokenText + ' */' + LineEnding;
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sqltQuotedString:
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stmt += '''' + SQLSafeString(TokenText) + '''';
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sqltIdentifierInDoubleQuotes:
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stmt += '"' + TokenText + '"';
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sqltEOL:
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stmt += LineEnding;
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else
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begin
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if (tokentext = Terminator) and (Nested = 0) then
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begin
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EndOfStatement := true;
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State := stDefault;
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end
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else
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stmt += TokenText;
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end;
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end;
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end;
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{ignore begin..end blocks for Terminator detection }
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stInBlock:
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begin
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case token of
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sqltBegin:
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begin
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Inc(Nested);
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stmt += TokenText;
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end;
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sqltEnd:
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begin
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Dec(Nested);
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stmt += TokenText;
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if Nested = 0 then
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begin
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State := stDefault;
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EndOfStatement := true;
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end;
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end;
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sqltCase:
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{case constructs can appear within select statement in nested blocks.
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We need to match the case constructs END token in order to parse the
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block correctly. This is a simple parser and the only objective is
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to determine the correct end of block. We therefore do not check to
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ensure that the next end properly matches the case. The CASE is thus
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treated the same as BEGIN. The Firebird SQL Parser will flag any errors
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due to mismatched CASE/BEGIN END}
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begin
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Inc(Nested);
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stmt += TokenText;
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end;
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sqltComment:
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stmt += '/*' + TokenText + '*/';
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sqltCommentLine:
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stmt += '/* ' + TokenText + ' */' + LineEnding;
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sqltQuotedString:
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stmt += '''' + SQLSafeString(TokenText) + '''';
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sqltIdentifierInDoubleQuotes:
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stmt += '"' + TokenText + '"';
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sqltEOL:
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stmt += LineEnding;
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else
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stmt += TokenText;
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end;
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end;
|
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{ignore array dimensions for Terminator detection }
|
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stInArrayDim:
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begin
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case token of
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sqltComment:
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stmt += '/*' + TokenText + '*/';
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sqltCommentLine:
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stmt += '/* ' + TokenText + ' */' + LineEnding;
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sqltCloseSquareBracket:
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begin
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stmt += TokenText;
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State := stInStmt;
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end;
|
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|
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sqltEOL:
|
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stmt += LineEnding;
|
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else
|
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stmt += TokenText;
|
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end;
|
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end;
|
482 |
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{ignore Declare statement for terminator - semi-colon terminates declaration}
|
484 |
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stInDeclare:
|
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begin
|
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case token of
|
488 |
|
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sqltComment:
|
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stmt += '/*' + TokenText + '*/';
|
491 |
|
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sqltCommentLine:
|
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stmt += '/* ' + TokenText + ' */' + LineEnding;
|
494 |
|
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sqltQuotedString:
|
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stmt += '''' + SQLSafeString(TokenText) + ''''; {exists some DECLARE with cursor having SELECT ...\... rc.rdb$constraint_type = 'PRIMARY KEY');}
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|
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sqltSemiColon:
|
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begin
|
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State := stInStmt;
|
501 |
stmt += TokenText;
|
502 |
end;
|
503 |
|
504 |
sqltEOL:
|
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stmt += LineEnding;
|
506 |
|
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else
|
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stmt += TokenText;
|
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end;
|
510 |
end;
|
511 |
end;
|
512 |
end;
|
513 |
Result := stmt <> '';
|
514 |
end;
|
515 |
|
516 |
|
517 |
|
518 |
{ TIBXScript }
|
519 |
|
520 |
constructor TIBXScript.Create(aOwner: TComponent);
|
521 |
begin
|
522 |
inherited Create(aOwner);
|
523 |
SetSQLStatementReader(TBatchSQLStatementReader.Create);
|
524 |
end;
|
525 |
|
526 |
function TIBXScript.PerformUpdate(SQLFile: string; aAutoDDL: boolean): boolean;
|
527 |
begin
|
528 |
FAutoDDL := aAutoDDL;
|
529 |
Result := RunScript( SQLFile);
|
530 |
end;
|
531 |
|
532 |
function TIBXScript.PerformUpdate(SQLStream: TStream; aAutoDDL: boolean
|
533 |
): boolean;
|
534 |
begin
|
535 |
FAutoDDL := aAutoDDL;
|
536 |
Result := RunScript(SQLStream);
|
537 |
end;
|
538 |
|
539 |
function TIBXScript.RunScript(SQLFile: string): boolean;
|
540 |
begin
|
541 |
TBatchSQLStatementReader(FSQLReader).SetStreamSource(SQLFile);
|
542 |
Result := ProcessStream;
|
543 |
end;
|
544 |
|
545 |
function TIBXScript.RunScript(SQLStream: TStream): boolean;
|
546 |
begin
|
547 |
TBatchSQLStatementReader(FSQLReader).SetStreamSource(SQLStream);
|
548 |
Result := ProcessStream;
|
549 |
end;
|
550 |
|
551 |
function TIBXScript.RunScript(SQLLines: TStrings): boolean;
|
552 |
begin
|
553 |
TBatchSQLStatementReader(FSQLReader).SetStreamSource(SQLLines);
|
554 |
Result := ProcessStream;
|
555 |
end;
|
556 |
|
557 |
function TIBXScript.ExecSQLScript(sql: string): boolean;
|
558 |
begin
|
559 |
TBatchSQLStatementReader(FSQLReader).SetStringStreamSource(sql);
|
560 |
Result := ProcessStream;
|
561 |
end;
|
562 |
|
563 |
{ TCustomIBXScript }
|
564 |
|
565 |
procedure TCustomIBXScript.Add2Log(const Msg: string; IsError: boolean);
|
566 |
begin
|
567 |
if IsError then
|
568 |
begin
|
569 |
if assigned(OnErrorLog) then OnErrorLog(self,Msg)
|
570 |
end
|
571 |
else
|
572 |
if assigned(FOnOutputLog) then FOnOutputLog(self,Msg)
|
573 |
end;
|
574 |
|
575 |
procedure TCustomIBXScript.DoCommit;
|
576 |
begin
|
577 |
with GetTransaction do
|
578 |
if InTransaction then Commit;
|
579 |
end;
|
580 |
|
581 |
procedure TCustomIBXScript.DoReconnect;
|
582 |
begin
|
583 |
with GetTransaction do
|
584 |
if InTransaction then Commit;
|
585 |
Database.Reconnect;
|
586 |
end;
|
587 |
|
588 |
procedure TCustomIBXScript.ExecSQL(stmt: string);
|
589 |
var DDL: boolean;
|
590 |
I: integer;
|
591 |
begin
|
592 |
Database.Connected := true;
|
593 |
FISQL.SQL.Text := stmt;
|
594 |
FISQL.Transaction := GetTransaction;
|
595 |
FISQL.Transaction.Active := true;
|
596 |
// FISQL.ParamCheck := not FSQLReader.HasBegin; {Probably PSQL}
|
597 |
FISQL.Prepare;
|
598 |
FISQL.Statement.EnableStatistics(ShowPerformanceStats);
|
599 |
|
600 |
if FISQL.SQLStatementType in [SQLInsert, SQLUpdate, SQLDelete] then
|
601 |
begin
|
602 |
{Interpret parameters}
|
603 |
for I := 0 to FISQL.Params.Count - 1 do
|
604 |
SetParamValue(FISQL.Params[I]);
|
605 |
end;
|
606 |
|
607 |
if FISQL.SQLStatementType = SQLSelect then
|
608 |
begin
|
609 |
if assigned(OnSelectSQL) then
|
610 |
OnSelectSQL(self,stmt)
|
611 |
else
|
612 |
DefaultSelectSQLHandler(stmt);
|
613 |
end
|
614 |
else
|
615 |
begin
|
616 |
DDL := FISQL.SQLStatementType = SQLDDL;
|
617 |
if not DDL or not FIgnoreGrants or (Pos('GRANT',AnsiUpperCase(Trim(stmt))) <> 1) then
|
618 |
begin
|
619 |
FISQL.ExecQuery;
|
620 |
if ShowAffectedRows and not DDL then
|
621 |
Add2Log('Rows Affected: ' + IntToStr(FISQL.RowsAffected));
|
622 |
if not DDL then
|
623 |
TIBCustomDataOutput.ShowPerfStats(FISQL.Statement,@Add2Log);
|
624 |
end;
|
625 |
|
626 |
if FAutoDDL and DDL then
|
627 |
FISQL.Transaction.Commit;
|
628 |
FISQL.Close;
|
629 |
end;
|
630 |
FISQL.SQL.Clear;
|
631 |
end;
|
632 |
|
633 |
function TCustomIBXScript.GetOnProgressEvent: TOnProgressEvent;
|
634 |
begin
|
635 |
Result := FSQLReader.OnProgressEvent;
|
636 |
end;
|
637 |
|
638 |
function TCustomIBXScript.GetTransaction: TIBTransaction;
|
639 |
begin
|
640 |
if not (csDesigning in ComponentState) and (FTransaction = nil) then
|
641 |
Result := FInternalTransaction
|
642 |
else
|
643 |
Result := FTransaction;
|
644 |
end;
|
645 |
|
646 |
procedure TCustomIBXScript.EchoNextLine(Sender: TObject; Line: string);
|
647 |
begin
|
648 |
if Echo then Add2Log(Line);
|
649 |
end;
|
650 |
|
651 |
procedure TCustomIBXScript.Notification(AComponent: TComponent;
|
652 |
Operation: TOperation);
|
653 |
begin
|
654 |
inherited Notification(AComponent, Operation);
|
655 |
if (AComponent = FDatabase) and (Operation = opRemove) then
|
656 |
FDatabase := nil;
|
657 |
if (AComponent = FTransaction) and (Operation = opRemove) then
|
658 |
FTransaction := nil;
|
659 |
if (AComponent = DataOutputFormatter) and (Operation = opRemove) then
|
660 |
FDataOutputFormatter := nil;
|
661 |
end;
|
662 |
|
663 |
procedure TCustomIBXScript.SetDatabase(AValue: TIBDatabase);
|
664 |
begin
|
665 |
if not (csLoading in ComponentState) and (FDatabase = AValue) then Exit;
|
666 |
FDatabase := AValue;
|
667 |
FISQL.Database := AValue;
|
668 |
FInternalTransaction.Active := false;
|
669 |
FInternalTransaction.DefaultDatabase := AValue;
|
670 |
end;
|
671 |
|
672 |
procedure TCustomIBXScript.SetDataOutputFormatter(AValue: TIBCustomDataOutput);
|
673 |
begin
|
674 |
if FDataOutputFormatter = AValue then Exit;
|
675 |
if (FDataOutputFormatter <> nil) and (AValue <> nil) then
|
676 |
AValue.Assign(FDataOutputFormatter);
|
677 |
FDataOutputFormatter := AValue;
|
678 |
if FDataOutputFormatter <> nil then
|
679 |
FDataOutputFormatter.Database := Database;
|
680 |
end;
|
681 |
|
682 |
procedure TCustomIBXScript.SetOnProgressEvent(AValue: TOnProgressEvent);
|
683 |
begin
|
684 |
FSQLReader.OnProgressEvent := AValue;
|
685 |
end;
|
686 |
|
687 |
procedure TCustomIBXScript.SetParamValue(SQLVar: ISQLParam);
|
688 |
var BlobID: TISC_QUAD;
|
689 |
ix: integer;
|
690 |
begin
|
691 |
if (SQLVar.SQLType = SQL_BLOB) and (Pos(TSQLXMLReader.ibx_blob,SQLVar.Name) = 1) then
|
692 |
begin
|
693 |
ix := StrToInt(system.copy(SQLVar.Name,length(TSQLXMLReader.ibx_blob)+1,length(SQLVar.Name)-length(TSQLXMLReader.ibx_blob)));
|
694 |
SQLVar.AsBlob := FSQLReader.BlobData[ix].BlobIntf;
|
695 |
Exit;
|
696 |
end
|
697 |
else
|
698 |
if (SQLVar.SQLType = SQL_ARRAY) and (Pos(TSQLXMLReader.ibx_array,SQLVar.Name) = 1) then
|
699 |
begin
|
700 |
ix := StrToInt(system.copy(SQLVar.Name,length(TSQLXMLReader.ibx_array)+1,length(SQLVar.Name)-length(TSQLXMLReader.ibx_array)));
|
701 |
SQLVar.AsArray := FSQLReader.ArrayData[ix].ArrayIntf;
|
702 |
Exit;
|
703 |
end;
|
704 |
|
705 |
if assigned(FGetParamValue) and (SQLVar.SQLType = SQL_BLOB) then
|
706 |
begin
|
707 |
Add2Log(Format(sResolveQueryParam,[SQLVar.Name]));
|
708 |
GetParamValue(self,SQLVar.Name,BlobID);
|
709 |
if (BlobID.gds_quad_high = 0) and (BlobID.gds_quad_low = 0) then
|
710 |
SQLVar.Clear
|
711 |
else
|
712 |
SQLVar.AsQuad := BlobID
|
713 |
end
|
714 |
else
|
715 |
raise Exception.Create(sNoParamQueries);
|
716 |
end;
|
717 |
|
718 |
procedure TCustomIBXScript.SetShowPerformanceStats(AValue: boolean);
|
719 |
begin
|
720 |
if FShowPerformanceStats = AValue then Exit;
|
721 |
FShowPerformanceStats := AValue;
|
722 |
if assigned(DataOutputFormatter) then
|
723 |
DataOutputFormatter.ShowPerformanceStats := AValue;
|
724 |
end;
|
725 |
|
726 |
function TCustomIBXScript.ProcessStream: boolean;
|
727 |
var stmt: string;
|
728 |
begin
|
729 |
Result := false;
|
730 |
FSQLReader.Database := Database;
|
731 |
if FTransaction = nil then
|
732 |
FSQLReader.Transaction := FInternalTransaction
|
733 |
else
|
734 |
FSQLReader.Transaction := FTransaction;
|
735 |
while FSQLReader.GetNextStatement(stmt) do
|
736 |
try
|
737 |
stmt := trim(stmt);
|
738 |
// writeln('stmt = "',stmt,'"');
|
739 |
if stmt = '' then continue;
|
740 |
if not ProcessStatement(stmt) then
|
741 |
ExecSQL(stmt);
|
742 |
|
743 |
except on E:Exception do
|
744 |
begin
|
745 |
with GetTransaction do
|
746 |
if InTransaction then Rollback;
|
747 |
FSQLReader.Terminator := TSQLStatementReader.DefaultTerminator;
|
748 |
if assigned(OnErrorLog) then
|
749 |
begin
|
750 |
Add2Log(Format(sStatementError,[FSQLReader.GetErrorPrefix,
|
751 |
E.Message,stmt]),true);
|
752 |
if StopOnFirstError then Exit;
|
753 |
end
|
754 |
else
|
755 |
raise;
|
756 |
end
|
757 |
end;
|
758 |
Result := true;
|
759 |
end;
|
760 |
|
761 |
procedure TCustomIBXScript.SetSQLStatementReader(
|
762 |
SQLStatementReader: TSQLStatementReader);
|
763 |
begin
|
764 |
FSQLReader := SQLStatementReader;
|
765 |
FSQLReader.OnNextLine := @EchoNextLine;
|
766 |
end;
|
767 |
|
768 |
function TCustomIBXScript.ProcessStatement(stmt: string): boolean;
|
769 |
var command: string;
|
770 |
|
771 |
function Toggle(aValue: string): boolean;
|
772 |
begin
|
773 |
aValue := AnsiUpperCase(aValue);
|
774 |
if aValue = 'ON' then
|
775 |
Result := true
|
776 |
else
|
777 |
if aValue = 'OFF' then
|
778 |
Result := false
|
779 |
else
|
780 |
raise Exception.CreateFmt(sInvalidSetStatement, [command,stmt]);
|
781 |
end;
|
782 |
|
783 |
procedure ExtractUserInfo;
|
784 |
var RegexObj: TRegExpr;
|
785 |
begin
|
786 |
RegexObj := TRegExpr.Create;
|
787 |
try
|
788 |
RegexObj.ModifierG := false; {turn off greedy matches}
|
789 |
RegexObj.Expression := ' +USER +''(.+)''';
|
790 |
if RegexObj.Exec(stmt) then
|
791 |
FDatabase.Params.Values['user_name'] := RegexObj.Match[1];
|
792 |
|
793 |
RegexObj.Expression := ' +PASSWORD +''(.+)''';
|
794 |
if RegexObj.Exec(stmt) then
|
795 |
FDatabase.Params.Values['password'] :=
|
796 |
system.copy(stmt,RegexObj.MatchPos[1],RegexObj.MatchLen[1]);
|
797 |
finally
|
798 |
RegexObj.Free;
|
799 |
end;
|
800 |
end;
|
801 |
|
802 |
procedure ExtractConnectInfo;
|
803 |
var RegexObj: TRegExpr;
|
804 |
begin
|
805 |
ExtractUserInfo;
|
806 |
RegexObj := TRegExpr.Create;
|
807 |
try
|
808 |
RegexObj.ModifierG := false; {turn off greedy matches}
|
809 |
RegexObj.ModifierI := true; {case insensitive}
|
810 |
RegexObj.Expression := '^ *CONNECT +''(.*)''';
|
811 |
if RegexObj.Exec(stmt) then
|
812 |
begin
|
813 |
FDatabase.DatabaseName := system.copy(stmt,RegexObj.MatchPos[1],RegexObj.MatchLen[1]);
|
814 |
end;
|
815 |
|
816 |
RegexObj.Expression := ' +ROLE +''(.+)''';
|
817 |
if RegexObj.Exec(stmt) then
|
818 |
FDatabase.Params.Values['sql_role_name'] := RegexObj.Match[1]
|
819 |
else
|
820 |
with FDatabase.Params do
|
821 |
if IndexOfName('sql_role_name') <> -1 then
|
822 |
Delete(IndexOfName('sql_role_name'));
|
823 |
|
824 |
RegexObj.Expression := ' +CACHE +([0-9]+)';
|
825 |
if RegexObj.Exec(stmt) then
|
826 |
FDatabase.Params.Values['cache_manager'] := RegexObj.Match[1]
|
827 |
else
|
828 |
with FDatabase.Params do
|
829 |
if IndexOfName('cache_manager') <> -1 then
|
830 |
Delete(IndexOfName('cache_manager'));
|
831 |
finally
|
832 |
RegexObj.Free;
|
833 |
end;
|
834 |
end;
|
835 |
|
836 |
procedure UpdateUserPassword;
|
837 |
var RegexObj: TRegExpr;
|
838 |
begin
|
839 |
RegexObj := TRegExpr.Create;
|
840 |
try
|
841 |
RegexObj.ModifierG := false; {turn off greedy matches}
|
842 |
RegexObj.ModifierI := true; {case insensitive}
|
843 |
RegexObj.Expression := '^ *CREATE +(DATABASE|SCHEMA) +(''.*'') +USER +''(.+)''';
|
844 |
if not RegexObj.Exec(stmt) and (FDatabase.Params.IndexOfName('user_name') <> -1) then
|
845 |
begin
|
846 |
RegexObj.Expression := '^ *CREATE +(DATABASE|SCHEMA) +(''.*'')';
|
847 |
if RegexObj.Exec(stmt) then
|
848 |
begin
|
849 |
system.Insert(' USER ''' + FDatabase.Params.Values['user_name'] +'''',stmt,
|
850 |
RegexObj.MatchPos[2] + RegexObj.MatchLen[2]);
|
851 |
end;
|
852 |
end;
|
853 |
|
854 |
RegexObj.Expression := '^ *CREATE +(DATABASE|SCHEMA) +''.*'' +USER +''.+'' PASSWORD +''(.+)''';
|
855 |
if not RegexObj.Exec(stmt) and (FDatabase.Params.IndexOfName('password') <> -1) then
|
856 |
begin
|
857 |
RegexObj.Expression := '^ *CREATE +(DATABASE|SCHEMA) +''.*'' +(USER +''.+'')';
|
858 |
if RegexObj.Exec(stmt) then
|
859 |
begin
|
860 |
system.Insert(' PASSWORD ''' + FDatabase.Params.Values['password'] +'''',stmt,
|
861 |
RegexObj.MatchPos[2] + RegexObj.MatchLen[2]);
|
862 |
end;
|
863 |
end;
|
864 |
finally
|
865 |
RegexObj.Free;
|
866 |
end;
|
867 |
end;
|
868 |
|
869 |
var RegexObj: TRegExpr;
|
870 |
n: integer;
|
871 |
charsetid: integer;
|
872 |
param: string;
|
873 |
Terminator: char;
|
874 |
FileName: string;
|
875 |
DBConnected: boolean;
|
876 |
LoginPrompt: boolean;
|
877 |
begin
|
878 |
Result := false;
|
879 |
Terminator := FSQLReader.Terminator;
|
880 |
RegexObj := TRegExpr.Create;
|
881 |
try
|
882 |
{process create database}
|
883 |
RegexObj.ModifierI := true; {case insensitive}
|
884 |
RegexObj.Expression := '^ *CREATE +(DATABASE|SCHEMA) +''(.*)''(.*)(\' + Terminator + '|)';
|
885 |
if RegexObj.Exec(stmt) then
|
886 |
begin
|
887 |
if IgnoreCreateDatabase then
|
888 |
begin
|
889 |
Result := true;
|
890 |
Exit;
|
891 |
end;
|
892 |
FileName := system.copy(stmt,RegexObj.MatchPos[2], RegexObj.MatchLen[2]);
|
893 |
if assigned(FOnCreateDatabase) then
|
894 |
OnCreateDatabase(self,FileName);
|
895 |
stmt := 'CREATE DATABASE ''' + FileName + '''' + system.copy(stmt,RegexObj.MatchPos[3], RegexObj.MatchLen[3]);
|
896 |
UpdateUserPassword;
|
897 |
if FDatabase.Connected then
|
898 |
FDatabase.Dropdatabase;
|
899 |
FDatabase.CreateDatabase(stmt);
|
900 |
Result := true;
|
901 |
Exit;
|
902 |
end;
|
903 |
|
904 |
{process connect statement}
|
905 |
RegexObj.Expression := '^ *CONNECT +.*(\' + Terminator + '|)';
|
906 |
if RegexObj.Exec(stmt) then
|
907 |
begin
|
908 |
ExtractConnectInfo;
|
909 |
FDatabase.Connected := false;
|
910 |
FDatabase.Connected := true;
|
911 |
Result := true;
|
912 |
Exit;
|
913 |
end;
|
914 |
|
915 |
{Process Drop Database}
|
916 |
RegexObj.Expression := '^ *DROP +DATABASE *(\' + Terminator + '|)';
|
917 |
if RegexObj.Exec(stmt) then
|
918 |
begin
|
919 |
FDatabase.DropDatabase;
|
920 |
Result := true;
|
921 |
Exit;
|
922 |
end;
|
923 |
|
924 |
{process commit statement}
|
925 |
RegexObj.Expression := '^ *COMMIT *(\' + Terminator + '|)';
|
926 |
if RegexObj.Exec(stmt) then
|
927 |
begin
|
928 |
DoCommit;
|
929 |
Result := true;
|
930 |
Exit;
|
931 |
end;
|
932 |
|
933 |
{process Reconnect statement}
|
934 |
RegexObj.Expression := '^ *RECONNECT *(\' + Terminator + '|)';
|
935 |
if RegexObj.Exec(stmt) then
|
936 |
begin
|
937 |
DoReconnect;
|
938 |
Result := true;
|
939 |
Exit;
|
940 |
end;
|
941 |
|
942 |
|
943 |
{Process Set Term}
|
944 |
RegexObj.Expression := '^ *SET +TERM +(.) *(\' + Terminator + '|)';
|
945 |
if RegexObj.Exec(stmt) then
|
946 |
begin
|
947 |
FSQLReader.Terminator := RegexObj.Match[1][1];
|
948 |
Result := true;
|
949 |
Exit;
|
950 |
end;
|
951 |
|
952 |
{process Set SQL Dialect}
|
953 |
RegexObj.Expression := '^ *SET +SQL +DIALECT +([0-9]) *(\' + Terminator + '|)';
|
954 |
if RegexObj.Exec(stmt) then
|
955 |
begin
|
956 |
n := StrToInt(RegexObj.Match[1]);
|
957 |
if Database.SQLDialect <> n then
|
958 |
begin
|
959 |
Database.SQLDialect := n;
|
960 |
if Database.Connected then
|
961 |
DoReconnect;
|
962 |
end;
|
963 |
Result := true;
|
964 |
Exit;
|
965 |
end;
|
966 |
|
967 |
{Process Remaining Set statements}
|
968 |
RegexObj.Expression := '^ *SET +([A-Z]+)( +[A-Z0-9]+|) *(\' + Terminator + '|)';
|
969 |
if RegexObj.Exec(stmt) then
|
970 |
begin
|
971 |
command := AnsiUpperCase(RegexObj.Match[1]);
|
972 |
param := trim(RegexObj.Match[2]);
|
973 |
if command = 'GENERATOR' then
|
974 |
begin
|
975 |
Result := false;
|
976 |
Exit;
|
977 |
end;
|
978 |
if command = 'AUTODDL' then
|
979 |
AutoDDL := ((RegexObj.MatchLen[2] = 0) and not AutoDDL) or
|
980 |
(RegexObj.MatchLen[2] > 0) and Toggle(param)
|
981 |
else
|
982 |
if command = 'BAIL' then
|
983 |
StopOnFirstError := ((RegexObj.MatchLen[2] = 0) and not StopOnFirstError) or
|
984 |
(RegexObj.MatchLen[2] > 0) and Toggle(param)
|
985 |
else
|
986 |
if command = 'ECHO' then
|
987 |
Echo := ((RegexObj.MatchLen[2] = 0) and not Echo) or
|
988 |
(RegexObj.MatchLen[2] > 0) and Toggle(param)
|
989 |
else
|
990 |
if command = 'COUNT' then
|
991 |
ShowAffectedRows := ((RegexObj.MatchLen[2] = 0) and not ShowAffectedRows) or
|
992 |
(RegexObj.MatchLen[2] > 0) and Toggle(param)
|
993 |
else
|
994 |
if command = 'STATS' then
|
995 |
ShowPerformanceStats := ((RegexObj.MatchLen[2] = 0) and not FShowPerformanceStats) or
|
996 |
(RegexObj.MatchLen[2] > 0) and Toggle(param)
|
997 |
else
|
998 |
if command = 'NAMES' then
|
999 |
begin
|
1000 |
if Database.Attachment.CharSetName2CharSetID(param,charsetid) then
|
1001 |
begin
|
1002 |
DBConnected := Database.Connected;
|
1003 |
LoginPrompt := Database.LoginPrompt;
|
1004 |
Database.LoginPrompt := false;
|
1005 |
Database.Connected := false;
|
1006 |
Database.Params.Values['lc_ctype'] := param;
|
1007 |
Database.Connected := DBConnected;
|
1008 |
Database.LoginPrompt := LoginPrompt;
|
1009 |
end
|
1010 |
else
|
1011 |
raise Exception.CreateFmt(sInvalidCharacterSet, [param,stmt]);
|
1012 |
end
|
1013 |
else
|
1014 |
begin
|
1015 |
if assigned(DataOutputFormatter) then
|
1016 |
DataOutputFormatter.SetCommand(command,param,stmt,Result);
|
1017 |
if not Result then
|
1018 |
begin
|
1019 |
if assigned(OnSetStatement) then
|
1020 |
OnSetStatement(self,command,param,stmt,Result)
|
1021 |
else
|
1022 |
raise Exception.CreateFmt(sInvalidSetStatement, [command,stmt]);
|
1023 |
end;
|
1024 |
Exit;
|
1025 |
end;
|
1026 |
Result := true;
|
1027 |
Exit;
|
1028 |
end;
|
1029 |
|
1030 |
finally
|
1031 |
RegexObj.Free;
|
1032 |
end;
|
1033 |
end;
|
1034 |
|
1035 |
procedure TCustomIBXScript.SetTransaction(AValue: TIBTransaction);
|
1036 |
begin
|
1037 |
if FTransaction = AValue then Exit;
|
1038 |
FTransaction := AValue;
|
1039 |
end;
|
1040 |
|
1041 |
constructor TCustomIBXScript.Create(aOwner: TComponent);
|
1042 |
begin
|
1043 |
inherited Create(aOwner);
|
1044 |
FStopOnFirstError := true;
|
1045 |
FEcho := true;
|
1046 |
FAutoDDL := true;
|
1047 |
FISQL := TIBSQL.Create(self);
|
1048 |
FISQL.ParamCheck := true;
|
1049 |
FInternalTransaction := TIBTransaction.Create(self);
|
1050 |
FInternalTransaction.Params.Clear;
|
1051 |
FInternalTransaction.Params.Add('concurrency');
|
1052 |
FInternalTransaction.Params.Add('wait');
|
1053 |
end;
|
1054 |
|
1055 |
destructor TCustomIBXScript.Destroy;
|
1056 |
begin
|
1057 |
if FSQLReader <> nil then FSQLReader.Free;
|
1058 |
if FISQL <> nil then FISQL.Free;
|
1059 |
if FInternalTransaction <> nil then FInternalTransaction.Free;
|
1060 |
inherited Destroy;
|
1061 |
end;
|
1062 |
|
1063 |
procedure TCustomIBXScript.DefaultSelectSQLHandler(aSQLText: string);
|
1064 |
begin
|
1065 |
if assigned(DataOutputFormatter) then
|
1066 |
DataOutputFormatter.DataOut(aSQLText,@Add2Log)
|
1067 |
else
|
1068 |
FSQLReader.ShowError(sNoSelectSQL);
|
1069 |
end;
|
1070 |
|
1071 |
{ TInteractiveSQLStatementReader }
|
1072 |
|
1073 |
function TInteractiveSQLStatementReader.GetErrorPrefix: string;
|
1074 |
begin
|
1075 |
Result := '';
|
1076 |
end;
|
1077 |
|
1078 |
function TInteractiveSQLStatementReader.GetNextLine(var Line: string): boolean;
|
1079 |
begin
|
1080 |
if FNextStatement then
|
1081 |
write(FPrompt)
|
1082 |
else
|
1083 |
write(FContinuePrompt);
|
1084 |
Result := not system.EOF;
|
1085 |
if Result then
|
1086 |
begin
|
1087 |
readln(Line);
|
1088 |
EchoNextLine(Line);
|
1089 |
end;
|
1090 |
end;
|
1091 |
|
1092 |
function TInteractiveSQLStatementReader.GetChar: char;
|
1093 |
begin
|
1094 |
if Terminated then
|
1095 |
Result := #0
|
1096 |
else
|
1097 |
if FLineIndex > Length(FLine) then
|
1098 |
begin
|
1099 |
Result := LF;
|
1100 |
FLineIndex := 0;
|
1101 |
end
|
1102 |
else
|
1103 |
if FLineIndex = 0 then
|
1104 |
begin
|
1105 |
if not GetNextLine(FLine) then
|
1106 |
Result := #0
|
1107 |
else
|
1108 |
if Length(FLine) = 0 then
|
1109 |
Result := LF
|
1110 |
else
|
1111 |
begin
|
1112 |
Result := FLine[1];
|
1113 |
FLineIndex := 2;
|
1114 |
end
|
1115 |
end
|
1116 |
else
|
1117 |
begin
|
1118 |
Result := FLine[FLineIndex];
|
1119 |
Inc(FLineIndex);
|
1120 |
end;
|
1121 |
end;
|
1122 |
|
1123 |
constructor TInteractiveSQLStatementReader.Create(aPrompt: string; aContinue: string);
|
1124 |
begin
|
1125 |
inherited Create;
|
1126 |
FPrompt := aPrompt;
|
1127 |
FLineIndex := 0;
|
1128 |
FNextStatement := true;
|
1129 |
FContinuePrompt := aContinue;
|
1130 |
end;
|
1131 |
|
1132 |
function TInteractiveSQLStatementReader.GetNextStatement(var stmt: string
|
1133 |
): boolean;
|
1134 |
begin
|
1135 |
Result := inherited GetNextStatement(stmt);
|
1136 |
FNextStatement := Result;
|
1137 |
end;
|
1138 |
|
1139 |
{ TBatchSQLStatementReader }
|
1140 |
|
1141 |
function TBatchSQLStatementReader.GetChar: char;
|
1142 |
begin
|
1143 |
if not EOF and assigned(FInStream) and not (FInStream.Position = FInStream.Size) then
|
1144 |
begin
|
1145 |
Result := char(FInStream.ReadByte);
|
1146 |
if Result = LF then
|
1147 |
begin
|
1148 |
EchoNextLine(FCurLine);
|
1149 |
FCurLine := '';
|
1150 |
if assigned(OnProgressEvent) then
|
1151 |
OnProgressEvent(self,false,FIndex+1);
|
1152 |
Inc(FLineIndex);
|
1153 |
FIndex := 1;
|
1154 |
end
|
1155 |
else
|
1156 |
if Result <> CR then
|
1157 |
begin
|
1158 |
FCurLine += Result;
|
1159 |
Inc(FIndex);
|
1160 |
end;
|
1161 |
end
|
1162 |
else
|
1163 |
Result := #0;
|
1164 |
end;
|
1165 |
|
1166 |
function TBatchSQLStatementReader.GetErrorPrefix: string;
|
1167 |
begin
|
1168 |
Result := Format(sOnLineError,[FLineIndex,FIndex]);
|
1169 |
end;
|
1170 |
|
1171 |
procedure TBatchSQLStatementReader.Reset;
|
1172 |
begin
|
1173 |
inherited Reset;
|
1174 |
if FOwnsInStream and assigned(FInStream) then
|
1175 |
FInStream.Free;
|
1176 |
FInStream := nil;
|
1177 |
FOwnsInStream := false;
|
1178 |
FLineIndex := 1;
|
1179 |
FIndex := 1;
|
1180 |
FCurLine := '';
|
1181 |
end;
|
1182 |
|
1183 |
procedure TBatchSQLStatementReader.SetStreamSource(Lines: TStrings);
|
1184 |
begin
|
1185 |
Reset;
|
1186 |
FInStream := TMemoryStream.Create;
|
1187 |
FOwnsInStream := true;
|
1188 |
Lines.SaveToStream(FInStream);
|
1189 |
FInStream.Position := 0;
|
1190 |
if assigned(OnProgressEvent) then
|
1191 |
OnProgressEvent(self,true,FInStream.Size);
|
1192 |
end;
|
1193 |
|
1194 |
procedure TBatchSQLStatementReader.SetStreamSource(S: TStream);
|
1195 |
begin
|
1196 |
Reset;
|
1197 |
FInStream := S;
|
1198 |
if assigned(OnProgressEvent) then
|
1199 |
OnProgressEvent(self,true,S.Size - S.Position);
|
1200 |
end;
|
1201 |
|
1202 |
procedure TBatchSQLStatementReader.SetStreamSource(FileName: string);
|
1203 |
begin
|
1204 |
Reset;
|
1205 |
FInStream := TFileStream.Create(FileName,fmShareCompat);
|
1206 |
FOwnsInStream := true;
|
1207 |
if assigned(OnProgressEvent) then
|
1208 |
OnProgressEvent(self,true,FInStream.Size);
|
1209 |
end;
|
1210 |
|
1211 |
procedure TBatchSQLStatementReader.SetStringStreamSource(S: string);
|
1212 |
begin
|
1213 |
Reset;
|
1214 |
FInStream := TStringStream.Create(S);
|
1215 |
FOwnsInStream := true;
|
1216 |
if assigned(OnProgressEvent) then
|
1217 |
OnProgressEvent(self,true,FInStream.Size);
|
1218 |
end;
|
1219 |
|
1220 |
end.
|
1221 |
|