Symaptic: os/persistentdata/persistentstorage/dbms/inc/D32REC.H@bde4ae8d615e

     1 // Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    16 #ifndef __D32REC_H__

    17 #define __D32REC_H__

    18 #ifndef __E32BASE_H__

    19 #include <e32base.h>

    20 #endif

    21 #ifndef __D32DBMS_H__

    22 #include <d32dbms.h>

    23 #endif

    24 #ifndef __D32DBAS__

    25 #include "D32DBAS.H"

    26 #endif

    28 // classes used in this header

    29 class RDbTableRow;

    30 class MStreamBuf;

    32 // classes defined in this header

    33 class TDbRecordId;

    34 class CDbRecordBase;

    35 class CDbRecordIter;

    36 class CDbRecordSpace;

    37 class CDbBlobSpace;

    38 class CDbRecordIndex;

    40 /**

    41 @internalComponent

    42 */

    43 enum TDbPosition { EDbFirst=RDbRowSet::EFirst,EDbNext=RDbRowSet::ENext,EDbPrevious=RDbRowSet::EPrevious,EDbLast=RDbRowSet::ELast };

    45 /**

    46 @internalComponent

    47 */

    48 const TUint32 KDbNullRecordIdValue=0;

    49 class TDbRecordId

    50 /**

    51 @internalComponent

    52 */

    53 	{

    54 public:

    55 	TDbRecordId() {}

    56 	inline TDbRecordId(TUint32 aValue);

    57 	inline TDbRecordId& operator=(TUint32 aValue);

    58 //

    59 	inline TBool operator==(TDbRecordId anId) const;

    60 	inline TBool operator!=(TDbRecordId anId) const;

    61 //

    62 	inline TUint32 Value() const;

    63 private:

    64 	TUint32 iValue;

    65 	};

    66 #if defined(__NO_CLASS_CONSTS__)

    67 /**

    68 @internalComponent

    69 */

    70 #define KDbNullRecordId TDbRecordId(KDbNullRecordIdValue)

    71 #else

    72 /**

    73 @internalComponent

    74 */

    75 const TDbRecordId KDbNullRecordId=TDbRecordId(KDbNullRecordIdValue);

    76 #endif

    78 class CDbRecordBase : public CBase

    79 /**

    80 @internalComponent

    81 */

    82 	{

    83 private:

    84 	enum {EOpen=0x1,EModified=0x2,EBroken=0x4};

    85 protected:

    86 	CDbRecordBase() {}

    87 public:

    88 	inline TBool OpenL();

    89 	IMPORT_C void FlushL();

    90 	inline void Abandon();

    91 	inline TBool IsBroken() const;

    92 //

    93 	static void DoFlushL(CDbRecordBase* aRec);

    94 	static void DoDelete(CDbRecordBase* aRec);

    95 	static void DoAbandon(CDbRecordBase* aRec);

    96 protected:

    97 	IMPORT_C void TouchL();

    98 	inline void MarkIntact();

    99 private:

   100 	IMPORT_C TBool DoRestoreL();

   101 	IMPORT_C virtual TBool RestoreL();

   102 	IMPORT_C virtual void AboutToModifyL();

   103 	IMPORT_C virtual void SynchL();

   104 private:

   105 	TUint iFlags;

   106 	};

   108 class CDbRecordIter : public CBase

   109 /**

   110 @internalComponent

   111 */

   112 	{

   113 public:

   114 	enum TDeleted {EAtRow,ENoRow,ENotSupported};

   115 protected:

   116 	IMPORT_C CDbRecordIter(CDbRecordBase& aHost);

   117 public:

   118 	IMPORT_C ~CDbRecordIter();

   119 	inline CDbRecordBase& Host() const;

   120 // pure virtual

   121 	virtual TInt Count() const =0;

   122 	virtual TDbRecordId CurrentL() =0;

   123 	virtual TBool GotoL(TDbPosition aPosition) =0;

   124 	virtual TBool GotoL(TDbRecordId aRecordId,RDbTableRow& aBuffer) =0;	// re-synchronise

   125 	virtual TBool SeekL(const TDbLookupKey& aKey,RDbTable::TComparison aComparison) =0;

   126 	inline TDeleted DeletedL(TDbPosition aPosition,TDbRecordId aRecordId);					// goto next id

   127 	inline TDeleted DeletedL(TDbPosition aPosition,TDbRecordId aRecordId,const RDbTableRow& aRow);	// goto next id

   128 //

   129 	virtual TDeleted DoDeletedL(TDbPosition aPosition,TDbRecordId aRecordId,const RDbTableRow* aRow) =0;

   130 private:

   131 	CDbRecordBase& iHost;

   132 	};

   134 class CDbRecordSpace : public CDbRecordBase

   135 /**

   136 @internalComponent

   137 */

   138 	{

   139 protected:

   140 	CDbRecordSpace() {}

   141 public:

   142 	virtual TBool ExistsL(TDbRecordId aRecordId) =0;

   143 	virtual TPtrC8 ReadL(TDbRecordId aRecordId) const =0;

   144 	TUint8* ReplaceL(TDbRecordId aRecordId,TInt aRecordSize);

   145 	virtual TUint AutoIncrementL() =0;

   146 	TUint8* NewL(TInt aRecordSize);

   147 	virtual TDbRecordId AppendL() =0;

   148 	void EraseL(TDbRecordId aRecordId);

   149 	virtual CDbRecordIter* IteratorL() =0;

   150 private:

   151 	virtual TUint8* DoReplaceL(TDbRecordId aRecordId,TInt aRecordSize) =0;

   152 	virtual TUint8* DoNewL(TInt aRecordSize) =0;

   153 	virtual void DoEraseL(TDbRecordId aRecordId) =0;

   154 	};

   156 class CDbBlobSpace : public CDbRecordBase

   157 /**

   158 @internalComponent

   159 */

   160 	{

   161 protected:

   162 	CDbBlobSpace() {}

   163 public:

   164 	virtual MStreamBuf* ReadL(TDbBlobId aBlobId,TDbColType aType) const =0;

   165 	IMPORT_C MStreamBuf* ReadLC(TDbBlobId aBlobId,TDbColType aType) const;

   166 	IMPORT_C MStreamBuf* CreateL(TDbBlobId &aBlobId,TDbColType aType);

   167 	IMPORT_C TDbBlobId CreateL(TDbColType aType,const TAny* aBuf,TInt aLength);

   168 	IMPORT_C void DeleteL(TDbBlobId aBlobId);

   169 	IMPORT_C TInt Delete(TDbBlobId aBlobId);

   170 	inline TInt InlineLimit() const;

   171 protected:

   172 	inline void SetInlineLimit(TInt anInlineLimit);

   173 private:

   174 	virtual MStreamBuf* DoCreateL(TDbBlobId &aBlobId,TDbColType aType) =0;

   175 	virtual void DoDeleteL(TDbBlobId aBlobId) =0;

   176 private:

   177 	TInt iInlineLimit;

   178 	};

   180 class CDbRecordIndex : public CDbRecordBase

   181 /**

   182 @internalComponent

   183 */

   184 	{

   185 public:

   186 	enum TFind {ENoMatch,EKeyMatch,EEntryMatch};

   187 	enum TInclusion {EIncludeLower=0x1,EIncludeUpper=0x2,EIncludeBoth=0x3};

   188 protected:

   189 	CDbRecordIndex() {}

   190 public:

   191 	virtual TFind FindL(TDbRecordId aRecordId,const RDbTableRow& aRow) =0;

   192 	TBool InsertL(TDbRecordId aRecordId,const RDbTableRow& aRow);

   193 	void DeleteL(TDbRecordId aRecordId,const RDbTableRow& aRow);

   194 	virtual CDbRecordIter* IteratorL(TUint aInclusion=0,const TDbLookupKey* aLowerBound=0,const TDbLookupKey* aUpperBound=0) =0;

   195 private:

   196 	virtual TBool DoInsertL(TDbRecordId aRecordId,const RDbTableRow& aRow) =0;

   197 	virtual void DoDeleteL(TDbRecordId aRecordId,const RDbTableRow& aRow) =0;

   198 	};

   200 #include "D32REC.INL"

   201 #endif

author	sl@SLION-WIN7.fritz.box
	Fri, 15 Jun 2012 03:10:57 +0200
changeset 0	bde4ae8d615e
permissions	-rw-r--r--