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pFIBScripter.pas
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pFIBScripter.pas
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{***************************************************************}
{ FIBPlus - component library for direct access to Firebird and }
{ InterBase databases }
{ }
{ FIBPlus is based in part on the product }
{ Free IB Components, written by Gregory H. Deatz for }
{ Hoagland, Longo, Moran, Dunst & Doukas Company. }
{ mailto:gdeatz@hlmdd.com }
{ }
{ Copyright (c) 1998-2013 Devrace Ltd. }
{ Written by Serge Buzadzhy (buzz@devrace.com) }
{ }
{ ------------------------------------------------------------- }
{ FIBPlus home page: http://www.fibplus.com/ }
{ FIBPlus support : http://www.devrace.com/support/ }
{ ------------------------------------------------------------- }
{ }
{ Please see the file License.txt for full license information }
{***************************************************************}
unit pFIBScripter;
interface
{$I FIBPlus.inc}
{$IFDEF D6+}
{$A2}
{$ENDIF}
uses SysUtils,Classes{$IFDEF D6+},Types{$ENDIF}
,FIBPlatforms,pFIBDatabase,pFIBQuery,FIBQuery,fib,pFIBInterfaces
;
//{$DEFINE BEZBAZY}
type
TStmtType = (sUnknown,sInvalid,sDML,
sConnect, sDisconnect, sReconnect,
sCreateDatabase,sDropDatabase,
sCommit, sRollBack,
sCreate, sAlter,sRecreate, sDrop, sSet, sSetGenerator,sSetStatistics,sDescribe,sDeclare,
sComment,sGrant,sRunFromFile,sBatch {Temp Type},sBatchStart,sBatchExecute, sExecute,
sInsert,sReinsert , sDirective
);
TObjectType =
(otNone,otDatabase,otDomain,otTable,otView,otProcedure,otTrigger,
otUDF,otException,otGenerator,otIndex,
otConstraint, otFilter,otField,otParameter,otRole,otBlock,otUser ,otPackage,otPackageBody,otFunction
);
TStmtCoord=record
X: Word;
Y: Integer;
end;
PStmtCoord=^TStmtCoord;
TValidationInfo=record
smdEnd :TStmtCoord;
Active :boolean;
BeginExist:boolean;
BegCount:integer;
end;
PValidationInfo=^TValidationInfo;
TStatementDesc = record
smdBegin:TStmtCoord;
smdEnd :TStmtCoord;
smtType :TStmtType;
objType :TObjectType;
objName :string;
DirectiveNum:integer ;
DirectiveElse:boolean;
end;
PStatementDesc=^TStatementDesc;
TScriptMap= array of TStatementDesc;
TOnParseStmt = procedure(Sender: TObject;StatementNo: Integer; Coord:TStatementDesc;
SQLText:TStrings) of object;
TDirectiveState = (dsUnknown,dsTrue,dsFalse);
TDirectiveDesc = record
dBegin:TStmtCoord;
dConditionClose:TStmtCoord;
dElse :TStmtCoord;
dEnd :TStmtCoord;
dState: TDirectiveState;
OwnerDirectiveNum:integer;
OwnerDirectiveElse:boolean;
end;
PDirectiveDesc=^TDirectiveDesc;
TDirectivesMap= array of TDirectiveDesc;
PDirectivesMap= array of PDirectiveDesc;
TpFIBScriptParser = class
private
FScript:TStrings;
FTemp :TStrings;
FCurDBName:string;
FMakeConnectInScript:boolean;
FHaveDMLStatements :boolean;
FHaveUnknownStatements:boolean;
FValidationInfo:TValidationInfo;
function NextTokenPos(TokenPos:TStmtCoord; EndCoord:TStmtCoord ):TStmtCoord;
function GetToken(TokenPos:TStmtCoord;IgnoreQuote:boolean=True):string;
procedure SearchObjectType(var stmtDesc:TStatementDesc;var BegSearch:TStmtCoord;ForGrant:boolean=False);
function ValidateStatement(var stmtDesc:TStatementDesc;const NeedCheckCanEnd:boolean ):boolean;
function StmtTypeNameToType(const TestString:string; Position:integer):TStmtType;
function TypeNameToObjectType(const TestString:string; Position:integer):TObjectType;
public
constructor Create;
destructor Destroy; override;
procedure ParseScript(AScript:TStrings;var Terminator:string;
var FScriptMap:TScriptMap; var FCDMap: TDirectivesMap;IgnoreLastTerm:boolean=True
);
end;
TOnStatementExecute = procedure(Sender: TObject;Line:Integer; StatementNo: Integer; Desc:TStatementDesc;
Statement: TStrings) of object;
TOnSQLScriptExecError = procedure(Sender: TObject; StatementNo: Integer;
Line:Integer; Statement: TStrings; SQLCode: Integer; const Msg: string;
var doRollBack:boolean; var Stop: Boolean) of object;
TDynStringArray= array of Ansistring;
//TDynStringArray= array of string;
TpFIBScripter=class(TComponent,IFIBScripter)
private
FPrepared:boolean;
FMakeConnectInScript:boolean;
FParser:TpFIBScriptParser;
FScript:TStrings;
FScriptMap:TScriptMap;
FDirectivesMap:TDirectivesMap;
FLineCountInFile:integer;
procedure DoOnChangeScript(Sender: TObject);
private
FDatabase :TpFIBDatabase;
FTransaction:TpFIBTransaction;
FQuery :TpFIBQuery;
FPaused :Boolean;
FSkipStatement:Boolean;
FStopStatementNo:integer;
FSQLDialect :integer;
FLibraryName:string;
FCharSet :string;
FAutoDDL :boolean;
FBlobFile :string;
FBlobFileStream:TFileStream;
vInternalDatabase:boolean;
FExternalTransaction:TpFIBTransaction;
FHaveDMLStatements :boolean;
FHaveUnknownStatements:boolean;
FNeedRestoreForceWrite:boolean;
vReinsPrepared:boolean;
vLastInsertStmt:string;
private
// AutoExecBlock support
FUseExecBlockForDML:boolean;
vBlockContextCount:integer;
vBlockSize:integer;
FExecBlockStatement:TStrings;
procedure RestartBlock;
procedure CloseBlock;
function AddStatementToExecuteBlock(Stmt:TStrings):boolean;
private
FOnExecuteError:TOnSQLScriptExecError;
FBeforeStatementExecute:TOnStatementExecute;
FAfterStatementExecute :TOnStatementExecute;
procedure SetDatabase(const Value: TpFIBDatabase);
procedure SetTransaction(const Value: TpFIBTransaction);
function GetTransaction:TpFIBTransaction;
procedure DoReconnect;
procedure SetConnectParams(StartToken:TStmtCoord;EndCoord:TStmtCoord);
procedure TryFillBlobParams;
function PrepareReinsert(const InsTxt,ReInsTxt:string):string;
private
//IB2007
FInBatchCollect:boolean;
FBatchSQLs :TDynStringArray;
FInternalOnStatementExec:TOnScriptStatementExec;
procedure SetOnStatExec(CallBack:TOnScriptStatementExec);
//Directives
private
FDefines:TStrings;
FDirectiveConsts:TStrings;
procedure SetScript(const Value: TStrings);
procedure SetDefines(const Value: TStrings);
function DirectiveForbid(DirNum:integer; InElse:boolean):boolean;
function CalcDirective(Directive:TDirectiveDesc):TDirectiveState;
function CalcExists(Condition:TStrings):TDirectiveState;
function CalcIF(Condition:TStrings):TDirectiveState;
protected
procedure Notification(AComponent: TComponent;
Operation: TOperation); override;
procedure CreateInternalDatabase;
procedure CopyFragment(BegPos,EndPos:TStmtCoord;Dest:TStrings);
procedure DoQueryExecute(SQL:TStrings;ParamValues:array of variant);
public
constructor Create(AOwner:TComponent); override;
destructor Destroy;override;
procedure Parse(Terminator:string=';');
procedure ExecuteScript(FromStmt:integer=1);
procedure ExecuteFromFile(const FileName: string;Terminator:string=';');
procedure ExecuteStatement(StmtTxt:TStrings;stmt:PStatementDesc;StmtNo:integer;
TmpSQL:TStrings=nil;LineInFile:integer=-1
);
procedure ClearPrepared;
function StatementsCount:integer;
function GetStatement(StmtNo:integer;Text:TStrings):PStatementDesc;
function LineCountInCurrentFile:integer;
procedure AddDefine(const Def:string);
procedure DeleteDefine(const Def:string);
procedure PreparePreDefines;
property Prepared:boolean read FPrepared;
property StopStatementNo:Integer read FStopStatementNo;
property Query:TpFIBQuery read FQuery;
property MakeConnectInScript:boolean read FMakeConnectInScript;
property SkipStatement: Boolean read FSkipStatement write FSkipStatement;
property Paused: Boolean read FPaused write FPaused;
property Defines:TStrings read FDefines write SetDefines;
published
property Script:TStrings read FScript write SetScript;
property Database:TpFIBDatabase read FDatabase write SetDatabase;
property Transaction: TpFIBTransaction read FExternalTransaction write SetTransaction;
property OnExecuteError:TOnSQLScriptExecError
read FOnExecuteError write FOnExecuteError;
property AutoDDL :boolean read FAutoDDL write FAutoDDL default True;
property BeforeStatementExecute:TOnStatementExecute read FBeforeStatementExecute write
FBeforeStatementExecute;
property AfterStatementExecute:TOnStatementExecute read FAfterStatementExecute write
FAfterStatementExecute ;
property UseExecBlockForDML:boolean read FUseExecBlockForDML write FUseExecBlockForDML default false;
end;
function StatementTypeName(tn:TStmtType):string;
// Possible Directives
// $IFDEF,$IFNDEF,$IFEXISTS,$IFNEXISTS,$IFNOTEXISTS,$ELSE,$ENDIF
//$IF,$DEFINE,$UNDEF
const
dIfDef='{$IFDEF';
dIfNDef='{$IFNDEF';
dIf ='{$IF';
dIfExists ='{$IFEXISTS';
dIfNExists ='{$IFNEXISTS';
dIfNotExists ='{$IFNOTEXISTS';
dElse='{$ELSE';
dEndIf='{$ENDIF';
dExecBlock='{$EXECUTE_BLOCK';
dDefine='{$DEFINE';
dUnDefine='{$UNDEF';
dSetVar='{$SET';
//predefined defnames
const srvIsFirebird='IS_FIREBIRD';
//predefined defVARS
srvMajorVer='SERVER_MAJOR_VER';
srvMinorVer='SERVER_MINOR_VER';
dbODSMajorVersion='ODS_MAJOR_VER';
dbODSMinorVersion='ODS_MINOR_VER';
implementation
uses StrUtil,SqlTxtRtns,StdFuncs;
{ TpFIBScripter }
type
TParseDisposition= (pdBetweenStatements,pdInStatement,pdInDirective);
TParserState =(psNormal,psInComment,psInFBComment,psInQuote,psInDoubleQuote,psInConditional);
procedure RaiseParserDirectiveError(const DirName:string;Line:integer);
begin
raise
Exception.Create('Parse script error.'+CLRF+'Can''t resolve directive "'+DirName+'"'+CLRF+
'Line ' +IntToStr(Line)
);
end;
function StatementTypeName(tn:TStmtType):string;
begin
case tn of
sUnknown: Result:='Unknown';
sInvalid: Result:='Invalid';
sDML: Result:='DML';
sConnect: Result:='Connect';
sDisconnect: Result:='Disconnect';
sReconnect: Result:='Reconnect';
sCreateDatabase: Result:='Create database';
sDropDatabase: Result:='Drop database';
sCommit: Result:='Commit';
sRollBack: Result:='Rollback';
sCreate: Result:='Create ';
sAlter: Result:='Alter ';
sRecreate:Result:='Recreate ';
sDrop:Result:='Drop ';
sSet:Result:='Set ';
sSetGenerator: Result:='Set generator';
sSetStatistics: Result:='Set statistics';
sDescribe :Result:='Describe ';
sDeclare :Result:='Declare ';
sComment :Result:='Comment ';
sGrant : Result:='Grant ';
sRunFromFile: Result:='Run from file ';
sInsert,sReinsert : Result:='DML'
else
Result:='Unknown';
end
end;
function StmtCoord(X:Word;Y:Integer):TStmtCoord;
begin
Result.X := X;
Result.Y := Y;
end;
function IsClause( const EtalonClause:string; const Source:string;
Position:integer
):boolean;
// EtalonClause must be if UpperCase
var
Len:Integer;
LenEtalon:Byte;
pSource:PChar;
pEtalon:PChar;
pEtalon1:PChar;
begin
Len:=Length(Source);
LenEtalon:=Length(EtalonClause);
if Len-Position+1<LenEtalon then
Result:=False
else
begin
pSource:=Pointer(Source);
Inc(pSource,Position-1);
pEtalon:=Pointer(EtalonClause);
pEtalon1:=Pointer(EtalonClause);
Inc(pEtalon1,LenEtalon);
Result:=True;
while (pEtalon<>pEtalon1) do
begin
if pSource^<>pEtalon^ then
begin
if Byte(pSource^)-32<>Byte(pEtalon^) then
begin
Result:=False;
Break;
end;
end;
Inc(pSource);
Inc(pEtalon);
end;
if Result and (Len-Position>=LenEtalon) then
Result:=Source[Position+LenEtalon] in [' ',#13,#9,#10,'/','-',';','^',',','}']
end
end;
function StrIsIfDirective(const CheckStr:string;X:integer):boolean;
begin
{ dIfDef='{$IFDEF';
dIfNDef='{$IFNDEF';
dIf ='{$IF';
dIfExists ='{$IFEXISTS';
dIfNExists ='{$IFNEXISTS';
dIfNotExists ='{$IFNOTEXISTS';
}
Result:=IsClause(dIfDef,CheckStr,x) or IsClause(dIfNDef,CheckStr,x) or
IsClause(dIf,CheckStr,x) or IsClause(dIfExists,CheckStr,x) or
IsClause(dIfNExists,CheckStr,x) or IsClause(dIfNotExists,CheckStr,x)
end;
procedure TpFIBScripter.ClearPrepared;
begin
SetLength(FScriptMap,0);
SetLength(FDirectivesMap,0);
FPrepared:=False;
end;
procedure TpFIBScripter.CopyFragment(BegPos, EndPos: TStmtCoord;
Dest: TStrings);
var
y1:Integer;
L:Word;
CurStr:String;
begin
if Assigned(Dest) then
begin
Dest.Clear;
if (EndPos.X=0) and (FScript.Count>0) then
begin
// End term don't exist
EndPos.Y:=FScript.Count-1;
EndPos.X:=Length(FScript[FScript.Count-1])
end;
for y1:=BegPos.Y to EndPos.Y do
begin
CurStr:=FScript[y1];
if y1=BegPos.Y then // First line
begin
if BegPos.Y=EndPos.Y then
L:=EndPos.X-BegPos.X+1
else
L:=Length(CurStr)-BegPos.X+1;
if L<>Length(CurStr) then
Dest.Add(Copy(CurStr,BegPos.X,L))
else
Dest.Add(CurStr)
end
else
if y1=EndPos.Y then // Last line
begin
L:=EndPos.X;
if L<>Length(CurStr) then
Dest.Add(Copy(CurStr,1,L))
else
Dest.Add(CurStr)
end
else
Dest.Add(CurStr)
end;
end;
end;
constructor TpFIBScripter.Create(AOwner:TComponent);
begin
inherited;
// FUseExecBlockForDML:=True;
FScript:=TStringList.Create;
TStringList(FScript).OnChanging:=DoOnChangeScript;
FParser:=TpFIBScriptParser.Create;
FDefines:=TStringList.Create;
FDirectiveConsts:=TStringList.Create;
// FDirectiveConsts.Add('A= 11');
FTransaction:=TpFIBTransaction.Create(Self);
FQuery :=TpFIBQuery.Create(Self);
FQuery.Transaction:=FTransaction;
FSQLDialect:=3;
FAutoDDL:=True;
FBlobFileStream:=nil;
end;
procedure TpFIBScripter.CreateInternalDatabase;
begin
if not Assigned(FDatabase) then
begin
Database:=TpFIBDatabase.Create(Self);
vInternalDatabase:=True
end
end;
destructor TpFIBScripter.Destroy;
begin
FParser.Free;
FScript.Free;
FDefines.Free;
FDirectiveConsts.Free;
SetLength(FScriptMap,0);
SetLength(FDirectivesMap,0);
if Assigned(FExecBlockStatement) then
FExecBlockStatement.Free;
if Assigned(FBlobFileStream) then
FBlobFileStream.Free;
inherited;
end;
procedure TpFIBScripter.DoOnChangeScript(Sender: TObject);
begin
ClearPrepared
end;
procedure TpFIBScripter.DoQueryExecute(SQL:TStrings;
ParamValues: array of variant);
begin
end;
procedure TpFIBScripter.DoReconnect;
begin
if Assigned(FDatabase) then
begin
if GetTransaction.InTransaction then
GetTransaction.Commit;
FDatabase.Connected := False;
FDatabase.Connected := True
end;
end;
{$IFNDEF D6+}
// Copy from SysUtils (D6+)
function AnsiDequotedStr(const S: string; AQuote: Char): string;
var
LText: PChar;
begin
LText := PChar(S);
Result := AnsiExtractQuotedStr(LText, AQuote);
if Result = '' then
Result := S;
end;
{$ENDIF}
function TpFIBScripter.CalcIF(Condition:TStrings):TDirectiveState;
type
TState=(sConstName,sOperator,sValue);
var
i,L:integer;
tmpStr:string;
cName:string;
cOper:string;
cValue:string;
Value:string;
cValueF:Double;
ValueF:Double;
Expr:string;
State:TState;
begin
// only simple expressions
Result:=dsUnknown;
tmpStr:=Condition[0];
L:=Length(tmpStr);
I:=3;
while I <= L do
begin
if tmpStr[I] in [' ',#9,#13,#10] then
Break;
Inc(I)
end;
tmpStr:=Trim(Copy(Condition.Text,I,MaxInt));
SetLength(tmpStr,Length(tmpStr)-1);
Expr:=Trim(tmpStr);
if Length(Expr)=0 then
Exit;
I:=1;
State:=sConstName;
cOper:=''; cValue:='';
while I<=Length(Expr) do
begin
case State of
sConstName:
if (Expr[I] in [' ',#9,#10,#13]) then
begin
cName:=UpperCase(Copy(Expr,1,I-1));
while (I<=Length(Expr)) and (Expr[I] in [' ',#9,#10,#13]) do
Inc(I);
if (I>Length(Expr)) or not (Expr[I] in ['=','>','<']) then
raise Exception.Create('Parse script error.'+CLRF+'Can''t resolve condition "$IF"'+CLRF+
Expr
);
State:=sOperator;
end
else
if (Expr[I] in ['=','>','<']) then
begin
cName:=UpperCase(Copy(Expr,1,I-1));
State:=sOperator;
end
else
Inc(I);
sOperator:
if (Expr[I] in ['=','>','<']) then
begin
cOper:=cOper+Expr[I];
Inc(I)
end
else
State:=sValue;
sValue:
begin
while (I<=Length(Expr)) and (Expr[I] in [' ',#9,#10,#13]) do
Inc(I);
cValue:=Copy(Expr,I,MaxInt);
Break;
end;
end;
end;
//
Value:=FDirectiveConsts.Values[cName];
if Trim(Value)='' then
raise Exception.Create('Parse script error.'+CLRF+'Constant don''t exists'+CLRF+
cName
);
if cOper='=' then
begin
if Value=cValue then
Result:=dsTrue
else
Result:=dsFalse
end
else
if cOper='<>' then
begin
if Value<>cValue then
Result:=dsTrue
else
Result:=dsFalse
end
else
begin
// May be floats
Value :=StringReplace(Value,'.',{$IFDEF D_XE3}FormatSettings.{$ENDIF} DecimalSeparator,[]);
Value :=StringReplace(Value,',',{$IFDEF D_XE3}FormatSettings.{$ENDIF} DecimalSeparator,[]);
cValue:=StringReplace(cValue,'.',{$IFDEF D_XE3}FormatSettings.{$ENDIF} DecimalSeparator,[]);
cValue:=StringReplace(cValue,',',{$IFDEF D_XE3}FormatSettings.{$ENDIF} DecimalSeparator,[]);
cValueF:=StrToFloat(cValue);
ValueF:=StrToFloat(Value);
case cOper[1] of
'>':
if ValueF<cValueF then
Result:=dsFalse
else
if cValueF>cValueF then
Result:=dsTrue
else
if cOper='>=' then
Result:=dsTrue
else
Result:=dsFalse;
'<':
if ValueF>cValueF then
Result:=dsFalse
else
if ValueF<cValueF then
Result:=dsTrue
else
if cOper='<=' then
Result:=dsTrue
else
Result:=dsFalse;
end;
end;
end;
const
QRYDomainExist =
'select RDB$FIELD_TYPE FROM RDB$FIELDS WHERE RDB$FIELD_NAME=:NAME';
QRYTableExist =
'SELECT REL.RDB$RELATION_NAME FROM RDB$RELATIONS REL WHERE REL.RDB$RELATION_NAME=:NAME and REL.RDB$VIEW_BLR is null';
QRYViewExist =
'SELECT REL.RDB$RELATION_NAME FROM RDB$RELATIONS REL WHERE REL.RDB$RELATION_NAME=:NAME and NOT REL.RDB$VIEW_BLR is null';
QRYTriggerExist =
'SELECT T.RDB$TRIGGER_NAME from RDB$TRIGGERS T WHERE T.RDB$TRIGGER_NAME=:NAME';
QRYProcedureExist =
'SELECT RDB$PROCEDURE_NAME FROM RDB$PROCEDURES WHERE RDB$PROCEDURE_NAME=:NAME';
QRYPackageExist =
'SELECT RDB$PACKAGE_NAME FROM RDB$PACKAGES WHERE RDB$PACKAGE_NAME=:NAME';
QRYExceptionExist =
'SELECT RDB$EXCEPTION_NAME FROM RDB$EXCEPTIONS WHERE RDB$EXCEPTION_NAME=:NAME';
QRYGeneratorExist =
'SELECT RDB$GENERATOR_NAME FROM RDB$GENERATORS WHERE RDB$GENERATOR_NAME=:NAME ';
QRYUdfExist =
'SELECT RDB$FUNCTION_NAME FROM RDB$FUNCTIONS WHERE RDB$FUNCTION_NAME=:NAME';
QRYFunctionExist =
'SELECT RDB$FUNCTION_NAME FROM RDB$FUNCTIONS WHERE RDB$FUNCTION_NAME=:NAME';
QRYRoleExist =
'SELECT RDB$ROLE_NAME FROM RDB$ROLES WHERE RDB$ROLE_NAME =:NAME ';
function TpFIBScripter.CalcExists(Condition:TStrings):TDirectiveState;
var
CheckExists:boolean;
i,L:integer;
tmpStr:string;
chObjectType:TObjectType;
chObjName:string;
chQryTxt:string;
begin
Result:=dsUnknown;
tmpStr:=Condition[0];
CheckExists:=IsClause(dIfExists, tmpStr,1) ;
if not CheckExists and not IsClause(dIfNExists, tmpStr,1)
and not IsClause(dIfNotExists, tmpStr,1)
then
Exit;
L:=Length(tmpStr);
I:=10;
while I <= L do
begin
if tmpStr[I] in [' ',#9,#13,#10] then
Break;
Inc(I)
end;
tmpStr:=Trim(Copy(Condition.Text,I,MaxInt));
if Length(tmpStr)=0 then
Exit;
chObjectType:=otNone;
case tmpStr[1] of
'D','d': if IsClause('DOMAIN', tmpStr,1) then
begin
chObjectType:=otDomain;
chQryTxt:=QRYDomainExist;
L:=7
end;
'E','e':
if IsClause('EXCEPTION', tmpStr,1) then
begin
chObjectType:=otException;
chQryTxt:=QRYExceptionExist;
L:=10
end;
'F','f':
if IsClause('FUNCTION', tmpStr,1) then
begin
chObjectType:=otFunction;
chQryTxt:=QRYFunctionExist;
L:=9
end;
'G','g':
if IsClause('GENERATOR', tmpStr,1) then
begin
chObjectType:=otGenerator;
chQryTxt:=QRYGeneratorExist;
L:=10
end;
'P','p':
if IsClause('PROCEDURE', tmpStr,1) then
begin
chObjectType:=otProcedure;
chQryTxt:=QRYProcedureExist;
L:=10
end
else
if IsClause('PACKAGE', tmpStr,1) then
begin
chObjectType:=otPackage;
chQryTxt:=QRYPackageExist;
L:=8
end;
'R','r':
if IsClause('ROLE', tmpStr,1) then
begin
chObjectType:=otRole;
chQryTxt:=QRYRoleExist;
L:=5
end;
'T','t':
if IsClause('TABLE', tmpStr,1) then
begin
chObjectType:=otTable;
chQryTxt:=QRYTableExist;
L:=6
end
else
if IsClause('TRIGGER', tmpStr,1) then
begin
chObjectType:=otTrigger;
chQryTxt:=QRYTriggerExist;
L:=8
end;
'U','u':
if IsClause('UDF', tmpStr,1) then
begin
chObjectType:=otUDF;
chQryTxt:=QRYUdfExist;
L:=4
end;
'V','v':
if IsClause('VIEW', tmpStr,1) then
begin
chObjectType:=otView;
chQryTxt:=QRYViewExist;
L:=5
end;
end; // case
if chObjectType<>otNone then
begin
chObjName:=Trim(Copy(tmpStr,L,MaxInt));
SetLength(chObjName,Length(chObjName)-1);
chObjName:=Trim(chObjName);
if (chObjName<>'') and (chObjName[1]='"') then
chObjName:=Copy(chObjName,2,Length(chObjName)-2)
else
chObjName:=UpperCase(chObjName);
FQuery.SQL.Text:=chQryTxt;
{$IFNDEF BEZBAZY}
if Assigned(FDatabase) and FDatabase.Connected then
begin
FQuery.Params[0].AsString:=chObjName;
if not GetTransaction.InTransaction then
GetTransaction.StartTransaction;
FQuery.Close;
try
FQuery.ExecQuery;
if FQuery.Eof xor CheckExists then
Result:= dsTrue
else
Result:= dsFalse
finally
FQuery.Close;
end;
end;
{$ENDIF}
end
else
if IsClause('SELECT', tmpStr,1) then
begin
chQryTxt:=tmpStr;
SetLength(chQryTxt,Length(chQryTxt)-1);
{$IFNDEF BEZBAZY}
if Assigned(FDatabase) and FDatabase.Connected then
begin
FQuery.SQL.Text:=chQryTxt;
if not GetTransaction.InTransaction then
GetTransaction.StartTransaction;
FQuery.Close;
try
FQuery.ExecQuery;
if FQuery.Eof xor CheckExists then
Result:= dsTrue
else
Result:= dsFalse
finally
FQuery.Close;
end;
end;
{$ENDIF}
end;
end;
function TpFIBScripter.CalcDirective(Directive:TDirectiveDesc):TDirectiveState;
var
TmpSQL:TStrings;
s:string;
begin
Result:=dsUnknown;
TmpSQL:=TStringList.Create;
try
CopyFragment(Directive.dBegin,Directive.dConditionClose,TmpSQL);
if TmpSQL.Count>0 then
if IsClause(dIfDef, TmpSQL[0],1) then
begin
s:=Trim(Copy(TmpSQL.Text,8,MaxInt));
SetLength(s,Length(s)-1);
s:=Trim(s);
if FDefines.IndexOf(UpperCase(s))>=0 then
Result:=dsTrue
else
Result:=dsFalse
end
else
if IsClause(dIfNDef, TmpSQL[0],1) then
begin
s:=Trim(Copy(TmpSQL.Text,9,MaxInt));
SetLength(s,Length(s)-1);
s:=Trim(s);
if FDefines.IndexOf(UpperCase(s))>=0 then
Result:=dsFalse
else
Result:=dsTrue
end
else
if IsClause(dIf, TmpSQL[0],1) then
begin
Result:=CalcIF(TmpSQL)
end
else
if IsClause(dIfExists, TmpSQL[0],1) then
begin
Result:=CalcExists(TmpSQL)
end
else
if IsClause(dIfNExists, TmpSQL[0],1) or IsClause(dIfNotExists, TmpSQL[0],1) then
begin
Result:=CalcExists(TmpSQL)
end
else
Result:=dsFalse
finally
TmpSQL.Free
end;
end;
function TpFIBScripter.DirectiveForbid(DirNum:integer; InElse:boolean):boolean;
var
NeedCalc:PDirectivesMap;
i,j:Integer;
vInElse:boolean;
begin
if (DirNum>=0) and (DirNum<Length(FDirectivesMap)) then
begin
case FDirectivesMap[DirNum].dState of
dsTrue: Result:= not InElse;
dsFalse: Result:= InElse;
else
//dsUnknown
begin
Result:=True;
SetLength(NeedCalc,1000);
i:=0;
j:=DirNum;
while (j>-1) and (FDirectivesMap[j].dState=dsUnknown) do
begin
NeedCalc[i]:=@FDirectivesMap[j];
j:=FDirectivesMap[j].OwnerDirectiveNum;
Inc(i)
end;
SetLength(NeedCalc,I);
Dec(I) ;
//
if j>-1 then
begin
Result:=(FDirectivesMap[j].dState=dsTrue) xor (NeedCalc[I].OwnerDirectiveElse);
end;
//
while (i>=0) and Result do
begin
if i>0 then
vInElse:=NeedCalc[i-1].OwnerDirectiveElse
else
vInElse:=InElse;
NeedCalc[i].dState:=CalcDirective(NeedCalc[i]^);
Result:= (NeedCalc[i].dState=dsTrue) xor vInElse;
Dec(I)
end;
if not Result then
if InElse then
FDirectivesMap[DirNum].dState:=dsTrue
else
FDirectivesMap[DirNum].dState:=dsFalse;
end;
end;
end
else
Result:=True
end;
procedure TpFIBScripter.ExecuteStatement(StmtTxt:TStrings;stmt:PStatementDesc;
StmtNo:integer; TmpSQL:TStrings=nil;LineInFile:integer=-1);
var
vToken:TStmtCoord;
tmpStr,tmpStr1:string;
vIsInternalTmpSQL:boolean;
doRollBack:boolean;
MayBeInBlock:boolean;
skip:boolean;
i:Integer;
procedure ApplyCommand;
begin
try
{$IFNDEF BEZBAZY}
if not GetTransaction.InTransaction then
GetTransaction.StartTransaction;
if Length(FBlobFile)>0 then
if (FQuery.ParamCount>0) then
TryFillBlobParams;
FQuery.ExecQuery;
if Assigned(FInternalOnStatementExec) then
begin
if LineInFile=-1 then
FInternalOnStatementExec(stmt.smdBegin.Y+1,StmtNo+1)
else
begin
FInternalOnStatementExec(LineInFile,StmtNo+1);
end;
end;
if Assigned(FAfterStatementExecute) then