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// Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// SQL parsing engine
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//
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//
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#ifndef __D32SQL_H__
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#define __D32SQL_H__
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#ifndef __D32DBMS_H__
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#include <d32dbms.h>
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#endif
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// Other class referenced
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class MStreamBuf;
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class TDbBlob;
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class RDbTableRow;
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class TTextOps;
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class TSqlParser;
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class CDbTable;
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class CDbTableDatabase;
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class CDbDataSource;
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class CDbBlobSpace;
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template <class T,class D> class HMatcherPattern;
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// Classes defined
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class Sql;
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class RSqlLiteral;
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class CSqlValues;
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class RSqlColumnList;
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class CSqlSearchCondition;
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class CSqlMultiNode;
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class CSqlBoundNode;
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class CSqlNullPredicate;
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class CSqlLiteralNode;
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class CSqlCompPredicate;
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class CSqlLikePredicate;
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class CSqlQuery;
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class CSqlDDLStatement;
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class CSqlDMLStatement;
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class CSqlInsertStatement;
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class CSqlModifyStatement;
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/**
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@internalComponent
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*/
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typedef HMatcherPattern<TUint8,TDesC8> HMatcherPattern8;
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typedef HMatcherPattern<TUint16,TDesC16> HMatcherPattern16;
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/**
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@internalComponent
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*/
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class Sql
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{
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public:
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enum TStatementType { ENone, EDDL, EDML };
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public:
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static CSqlDDLStatement* ParseDDLStatementLC( const TDesC& aSql );
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static CSqlDMLStatement* ParseDMLStatementLC( const TDesC& aSql );
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static CSqlQuery* ParseQueryLC( const TDesC& aSql );
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static CSqlSearchCondition* ParseSearchConditionLC( const TDesC& aSql );
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//
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static TStatementType Type( const TDesC& aSql );
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};
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// variant data classes
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/**
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@internalComponent
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*/
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class RSqlLiteral
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{
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public:
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inline RSqlLiteral();
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void Close();
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// assignment
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inline void SetText( const TText* aPtr, const TText* aEnd );
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inline TInt64& SetInt();
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inline TReal64& SetReal();
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inline TTime& SetTime();
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// conversions
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void ToInt32L();
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void ToUint32L();
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void ToInt64L();
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void ToReal32L();
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void ToReal64L();
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void ToTimeL();
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void ToText8L();
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void ToText16L();
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void ToPattern8L(TBool aEscape = EFalse);
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void ToPattern16L(TBool aEscape = EFalse);
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TInt CopyText();
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// accessors
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inline TBool IsNull() const;
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inline TInt32 Int32() const;
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inline TUint32 Uint32() const;
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inline const TInt64& Int64() const;
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inline const TTime& Time() const;
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inline const TReal32& Real32() const;
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inline const TReal64& Real64() const;
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inline const TText* Ptr() const;
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inline const TText* End() const;
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inline const TPtrC DesC() const;
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inline const HBufC8& Text8() const;
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inline const HBufC16& Text16() const;
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inline const HMatcherPattern8& Pattern8() const;
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inline const HMatcherPattern16& Pattern16() const;
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private:
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inline TBool IsBasic() const;
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inline TBool IsAlloc() const;
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private:
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enum TType { EInt32, EUint32, EReal32, EInt64, ETime, EReal64, EPtr, ENull, EBuf8, EBuf16, EPattern8, EPattern16 };
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private:
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union
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{
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TInt32 iInt32;
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TUint32 iUint32;
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TUnion<TInt64> iInt64;
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TReal32 iReal32;
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TReal64 iReal64;
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TUnion<TTime> iTime;
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struct { const TText* iPtr; const TText* iEnd; } iPtr;
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TAny* iAlloc;
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} iVal;
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TType iType;
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HBufC* iBuffer;
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};
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/**
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@internalComponent
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*/
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NONSHARABLE_CLASS(CSqlValues) : public CBase
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{
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public:
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CSqlValues();
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~CSqlValues();
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//
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void AddL( const RSqlLiteral& aLiteral );
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void BindL( const CDbDataSource& aSource );
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void WriteL( CDbDataSource& aSource, CDbTable& aTable ) const;
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private:
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enum { EGranularity = 8 };
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class TEntry
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{
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public:
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inline TEntry( const RSqlLiteral& aValue );
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public:
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RSqlLiteral iValue;
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TDbColType iType;
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};
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private:
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RArray<TEntry> iValues;
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};
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/**
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@internalComponent
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*/
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class RSqlColumnList : public RArray<TPtrC>
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{
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enum { EGranularity = 8 };
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public:
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inline RSqlColumnList();
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};
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// evaluation tree classes
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/**
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@internalComponent
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*/
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class CSqlSearchCondition : public CBase
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{
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public:
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enum TType
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{
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EAnd, EOr,
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EIsNull, EIsNotNull,
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ELike, ENotLike,
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ELess, ELessEqual, EEqual, EGreaterEqual, EGreater, ENotEqual
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};
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public:
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TBool iIsEscape;
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inline TType NodeType() const;
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inline CSqlMultiNode* MultiNode();
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inline CSqlNullPredicate* NullPredicate();
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inline CSqlCompPredicate* CompPredicate();
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inline CSqlLikePredicate* LikePredicate();
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//
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virtual void BindL( const RDbTableRow& aSource ) = 0;
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virtual TBool EvaluateL( const TTextOps& aTextOp ) const = 0;
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protected:
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CSqlSearchCondition( TType aType );
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private:
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TType iType;
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};
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/**
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@internalComponent
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*/
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NONSHARABLE_CLASS(CSqlMultiNode) : public CSqlSearchCondition
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{
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private:
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typedef CSqlSearchCondition* TEntry;
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enum { EGranularity = 4 * sizeof( TEntry ) };
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public:
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static CSqlSearchCondition* New( TType aType, CSqlSearchCondition* aLeft, CSqlSearchCondition* aRight );
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//
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inline TInt Count() const;
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inline CSqlSearchCondition* SubNode( TInt aIndex ) const;
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inline void SetSubNode( TInt aIndex, CSqlSearchCondition* aSearchCondition );
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void Remove( CSqlSearchCondition* aSubNode );
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static CSqlSearchCondition* Reduce( CSqlMultiNode* aNode );
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private:
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inline CSqlMultiNode( TType aType );
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~CSqlMultiNode();
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static CSqlMultiNode* New( TType aType, TInt aSize );
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static CSqlMultiNode* Grow( CSqlMultiNode* aNode, TInt aExtraSize );
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static CSqlMultiNode* Concatenate( CSqlMultiNode* aLeft, CSqlMultiNode* aRight );
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//
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inline TInt Size() const;
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static inline TInt Size( TInt aLeaves );
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inline TBool IsFull() const;
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private:
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// from CSqlSearchCondition
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void BindL( const RDbTableRow& aSource );
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TBool EvaluateL( const TTextOps& aTextOp ) const;
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private:
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TEntry* iEnd;
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TEntry iLeaves[1];
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};
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/**
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@internalComponent
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*/
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NONSHARABLE_CLASS(CSqlBoundNode) : public CSqlSearchCondition
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{
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public:
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const TDesC& ColumnName() const;
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inline TDbColNo ColNo() const;
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inline TDbColType ColType() const;
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protected:
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CSqlBoundNode( TType aType, const TDesC& aColumn );
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inline TBool IsBound() const;
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inline TDbColumnC Column() const;
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MStreamBuf& StreamLC( const TDbBlob& aBlob ) const;
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// from CSqlSearchCondition
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void BindL( const RDbTableRow& aSource );
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private:
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const RDbTableRow* iSource;
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union
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{
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TUnion<TPtrC> iName;
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struct
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{
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TDbColNo iNumber;
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TDbColType iType;
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} iBound;
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} iColumn;
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};
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/**
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@internalComponent
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*/
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NONSHARABLE_CLASS(CSqlNullPredicate) : public CSqlBoundNode
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{
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public:
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CSqlNullPredicate( TType aType, const TDesC& aColumn );
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private:
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// from CSqlSearchCondition
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TBool EvaluateL( const TTextOps& aTextOp ) const;
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};
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/**
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@internalComponent
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*/
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NONSHARABLE_CLASS(CSqlLiteralNode) : public CSqlBoundNode
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{
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public:
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inline const RSqlLiteral& Value() const;
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inline RSqlLiteral& Value();
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protected:
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CSqlLiteralNode( TType aType, const TDesC& aColumn, const RSqlLiteral& aLiteral );
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~CSqlLiteralNode();
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// from CSqlSearchCondition
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void BindL( const RDbTableRow& aSource );
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private:
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RSqlLiteral iLiteral;
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};
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/**
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@internalComponent
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*/
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NONSHARABLE_CLASS(CSqlCompPredicate) : public CSqlLiteralNode
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{
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public:
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CSqlCompPredicate( TType aType, const TDesC& aColumn, const RSqlLiteral& aLiteral );
|
|
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|
311 |
private:
|
|
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|
312 |
TInt CompareLongText8L( const TDbBlob& aBlob, const TTextOps& aTextOp ) const;
|
|
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|
313 |
TInt CompareLongText16L( const TDbBlob& aBlob, const TTextOps& aTextOp ) const;
|
|
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|
314 |
// from CSqlSearchCondition
|
|
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|
315 |
TBool EvaluateL( const TTextOps& aTextOp ) const;
|
|
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|
316 |
};
|
|
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|
317 |
|
|
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|
318 |
/**
|
|
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|
319 |
@internalComponent
|
|
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|
320 |
*/
|
|
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|
321 |
NONSHARABLE_CLASS(CSqlLikePredicate) : public CSqlLiteralNode
|
|
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|
322 |
{
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|
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|
323 |
public:
|
|
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|
324 |
CSqlLikePredicate( TType aType, const TDesC& aColumn, const RSqlLiteral& aPattern );
|
|
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|
325 |
private:
|
|
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|
326 |
// from CSqlSearchCondition
|
|
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|
327 |
void BindL( const RDbTableRow& aSource );
|
|
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|
328 |
TBool EvaluateL( const TTextOps& aTextOp ) const;
|
|
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|
329 |
private:
|
|
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|
330 |
TInt iMatchSize;
|
|
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|
331 |
};
|
|
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|
332 |
|
|
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|
333 |
/**
|
|
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|
334 |
@internalComponent
|
|
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|
335 |
*/
|
|
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|
336 |
NONSHARABLE_CLASS(CSqlQuery) : public CBase
|
|
sl@0
|
337 |
{
|
|
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|
338 |
friend class TSqlParser;
|
|
sl@0
|
339 |
public:
|
|
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|
340 |
CSqlQuery();
|
|
sl@0
|
341 |
~CSqlQuery();
|
|
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|
342 |
//
|
|
sl@0
|
343 |
inline const TDesC& Table() const;
|
|
sl@0
|
344 |
//
|
|
sl@0
|
345 |
inline TBool HasColumnList() const;
|
|
sl@0
|
346 |
inline const RSqlColumnList& ColumnList() const;
|
|
sl@0
|
347 |
//
|
|
sl@0
|
348 |
inline TBool HasSearchCondition() const;
|
|
sl@0
|
349 |
inline CSqlSearchCondition& SearchCondition();
|
|
sl@0
|
350 |
void RemovePredicate( CSqlCompPredicate* aNode );
|
|
sl@0
|
351 |
inline CSqlSearchCondition* AdoptSearchCondition();
|
|
sl@0
|
352 |
//
|
|
sl@0
|
353 |
inline TBool HasSortSpecification() const;
|
|
sl@0
|
354 |
inline CDbKey& SortSpecification();
|
|
sl@0
|
355 |
private:
|
|
sl@0
|
356 |
CDbKey& SortSpecificationL();
|
|
sl@0
|
357 |
private:
|
|
sl@0
|
358 |
TPtrC iTable;
|
|
sl@0
|
359 |
RSqlColumnList iColumns;
|
|
sl@0
|
360 |
CSqlSearchCondition* iSearchCondition;
|
|
sl@0
|
361 |
CDbKey* iSortSpecification;
|
|
sl@0
|
362 |
};
|
|
sl@0
|
363 |
|
|
sl@0
|
364 |
/**
|
|
sl@0
|
365 |
@internalComponent
|
|
sl@0
|
366 |
*/
|
|
sl@0
|
367 |
class CSqlDDLStatement : public CBase
|
|
sl@0
|
368 |
{
|
|
sl@0
|
369 |
protected:
|
|
sl@0
|
370 |
inline CSqlDDLStatement() {}
|
|
sl@0
|
371 |
public:
|
|
sl@0
|
372 |
virtual CDbIncremental* ExecuteL( CDbDatabase& aDatabase, TDbTextComparison aComparison, TInt& aStep ) = 0;
|
|
sl@0
|
373 |
};
|
|
sl@0
|
374 |
|
|
sl@0
|
375 |
/**
|
|
sl@0
|
376 |
@internalComponent
|
|
sl@0
|
377 |
*/
|
|
sl@0
|
378 |
NONSHARABLE_CLASS(CSqlDMLStatement) : public CBase
|
|
sl@0
|
379 |
{
|
|
sl@0
|
380 |
friend class TSqlParser;
|
|
sl@0
|
381 |
public:
|
|
sl@0
|
382 |
~CSqlDMLStatement();
|
|
sl@0
|
383 |
//
|
|
sl@0
|
384 |
inline CSqlQuery& Query();
|
|
sl@0
|
385 |
inline CSqlValues& Values();
|
|
sl@0
|
386 |
inline CSqlValues* AdoptValues();
|
|
sl@0
|
387 |
//
|
|
sl@0
|
388 |
virtual CDbIncremental* ExecuteL( CDbTableDatabase& aDatabase, TDbTextComparison aComparison, TInt& aRows ) = 0;
|
|
sl@0
|
389 |
protected:
|
|
sl@0
|
390 |
inline CSqlDMLStatement() {}
|
|
sl@0
|
391 |
inline TBool HasValues() const;
|
|
sl@0
|
392 |
private:
|
|
sl@0
|
393 |
CSqlValues& ValuesL();
|
|
sl@0
|
394 |
private:
|
|
sl@0
|
395 |
CSqlQuery iQuery;
|
|
sl@0
|
396 |
CSqlValues* iValues;
|
|
sl@0
|
397 |
};
|
|
sl@0
|
398 |
|
|
sl@0
|
399 |
/**
|
|
sl@0
|
400 |
@internalComponent
|
|
sl@0
|
401 |
*/
|
|
sl@0
|
402 |
NONSHARABLE_CLASS(CSqlInsertStatement) : public CSqlDMLStatement
|
|
sl@0
|
403 |
{
|
|
sl@0
|
404 |
public:
|
|
sl@0
|
405 |
static CSqlInsertStatement* NewLC();
|
|
sl@0
|
406 |
private:
|
|
sl@0
|
407 |
inline CSqlInsertStatement() {}
|
|
sl@0
|
408 |
// from CSqlDMLStatement
|
|
sl@0
|
409 |
CDbIncremental* ExecuteL( CDbTableDatabase& aDatabase, TDbTextComparison aComparison, TInt& aRows );
|
|
sl@0
|
410 |
};
|
|
sl@0
|
411 |
|
|
sl@0
|
412 |
/**
|
|
sl@0
|
413 |
@internalComponent
|
|
sl@0
|
414 |
*/
|
|
sl@0
|
415 |
NONSHARABLE_CLASS(CSqlModifyStatement) : public CSqlDMLStatement
|
|
sl@0
|
416 |
{
|
|
sl@0
|
417 |
public:
|
|
sl@0
|
418 |
static CSqlModifyStatement* NewLC();
|
|
sl@0
|
419 |
inline TBool IsUpdate() const;
|
|
sl@0
|
420 |
private:
|
|
sl@0
|
421 |
inline CSqlModifyStatement() {}
|
|
sl@0
|
422 |
// from CSqlDMLStatement
|
|
sl@0
|
423 |
CDbIncremental* ExecuteL( CDbTableDatabase& aDatabase, TDbTextComparison aComparison, TInt& aRows );
|
|
sl@0
|
424 |
};
|
|
sl@0
|
425 |
|
|
sl@0
|
426 |
/**
|
|
sl@0
|
427 |
TSqlParser2 class uses TSqlParser class functionality only to parse particular SQL string
|
|
sl@0
|
428 |
and extract SQL type and table name.
|
|
sl@0
|
429 |
@internalComponent
|
|
sl@0
|
430 |
*/
|
|
sl@0
|
431 |
class TSqlParser2
|
|
sl@0
|
432 |
{
|
|
sl@0
|
433 |
public:
|
|
sl@0
|
434 |
void ParseL(const TDesC& aSql);
|
|
sl@0
|
435 |
inline Sql::TStatementType StatementType() const;
|
|
sl@0
|
436 |
inline const TDesC& TableName() const;
|
|
sl@0
|
437 |
|
|
sl@0
|
438 |
private:
|
|
sl@0
|
439 |
Sql::TStatementType iStatementType;
|
|
sl@0
|
440 |
TPtrC iTableName;
|
|
sl@0
|
441 |
|
|
sl@0
|
442 |
};
|
|
sl@0
|
443 |
|
|
sl@0
|
444 |
#include "D32SQL.INL"
|
|
sl@0
|
445 |
|
|
sl@0
|
446 |
#endif//__D32SQL_H__
|