symhelp/helpmodel/dbwriter/DBWRITER.H
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     1 // Copyright (c) 1999-2009 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 //
       
    15 
       
    16 #ifndef __DBWRITER_H__
       
    17 #define __DBWRITER_H__
       
    18 
       
    19 #include <d32dbms.h>
       
    20 #include <e32std.h>
       
    21 #include <s32file.h>
       
    22 #include <bautils.h>
       
    23 #include <txtrich.h>
       
    24 #include <txtfmlyr.h>
       
    25 #include <txtmrtsr.h>
       
    26 #include <gdi.h>
       
    27 
       
    28 // User includes
       
    29 #include "hlpconstants.h"
       
    30 
       
    31 // Db writer constants
       
    32 const TInt KTopicTblTopicTitle = 1;
       
    33 const TInt KTopicTblCategoryTitle = 2;
       
    34 const TInt KTopicTblTopicText = 3;
       
    35 const TInt KTopicTblTopicMarkup = 4;
       
    36 const TInt KTopicTblSynonym = 5;
       
    37 const TInt KTopicTblTopicId = 6;
       
    38 const TInt KTopicTblCategoryUID = 7;
       
    39 
       
    40 const TInt KIndexTblIndex = 1;
       
    41 const TInt KIndexTblIndexId = 2;
       
    42 
       
    43 const TInt KTopicIndexTblTopicId = 1;
       
    44 const TInt KTopicIndexTblIndexId = 2;
       
    45 const TInt KTopicIndexTblCategoryUID = 3;
       
    46 const TInt KTopicIndexTblTopicTitle = 4;
       
    47 
       
    48 const TInt KContextTblContext = 1;
       
    49 const TInt KContextTblTopicId = 2;
       
    50 
       
    51 const TInt KImageTblImageId = 1;
       
    52 const TInt KImageTblImageCount = 2;
       
    53 const TInt KImageTblImage0 = 3;
       
    54 const TInt KImageTblImage1 = 4;
       
    55 const TInt KImageTblImage2 = 5;
       
    56 
       
    57 
       
    58 
       
    59 // DML statements used in creating the database tables and indices
       
    60 _LIT(KHlpDMLTopicTable,			"CREATE TABLE Topic (TopicTitle CHAR(120), Category CHAR(120), TopicText LONG VARCHAR, TopicMarkup LONG VARBINARY, Synonym CHAR(200), TopicId UNSIGNED INTEGER, CategoryUID UNSIGNED INTEGER)");
       
    61 
       
    62 // IndexeId's are unique on a per-helpfile basis, ie. all indexId's in one help file are unique.
       
    63 _LIT(KHlpDMLIndexTable,			"CREATE TABLE Index (Index CHAR(120), IndexId UNSIGNED INTEGER)");
       
    64 
       
    65 // TopicId's are unique within a helpfile but not across a help file
       
    66 _LIT(KHlpDMLTopicIndexTable,	"CREATE TABLE TopicIndex (TopicId UNSIGNED INTEGER, IndexId UNSIGNED INTEGER, CategoryUID UNSIGNED INTEGER, TopicTitle CHAR(120))");
       
    67 
       
    68 _LIT(KHlpDMLContextTable,		"CREATE TABLE Context (Context CHAR(30), TopicId UNSIGNED INTEGER)");
       
    69 
       
    70 _LIT(KHlpDMLImageTable,			"CREATE TABLE Image (ImageId UNSIGNED INTEGER, ImageCount UNSIGNED INTEGER, Image0 LONG VARBINARY, Image1 LONG VARBINARY, Image2 LONG VARBINARY)");
       
    71 
       
    72 
       
    73 _LIT(KHlpDMLTopicTableIdx,		"CREATE UNIQUE INDEX TopicIdx ON Topic (TopicId)");
       
    74 _LIT(KHlpDMLIndexTableIdx,		"CREATE UNIQUE INDEX IndexIdx ON Index (IndexId)");
       
    75 _LIT(KHlpDMLTopicIndexTableIdx, "CREATE UNIQUE INDEX TopicIndexIdx ON TopicIndex (IndexId, TopicId)");
       
    76 _LIT(KHlpDMLContextTableIdx,	"CREATE UNIQUE INDEX ContextIdx ON Context (Context)");
       
    77 _LIT(KHlpDMLImageTableIdx,		"CREATE UNIQUE INDEX ImageIdx ON Image (ImageId)");
       
    78 
       
    79 // DDL statements used in opening tables for writing
       
    80 _LIT(KHlpSQLTopicTable,			"SELECT * FROM Topic");
       
    81 _LIT(KHlpSQLIndexTable,			"SELECT * FROM Index");
       
    82 _LIT(KHlpSQLTopicIndexTable,	"SELECT * FROM TopicIndex");
       
    83 _LIT(KHlpSQLContextTable,		"SELECT * FROM Context");
       
    84 _LIT(KHlpSQLImageTable,			"SELECT * FROM Image");
       
    85 
       
    86 // enum for selecting a table for writing to
       
    87 enum
       
    88 	{
       
    89 	ETopicTable,
       
    90 	EIndexTable,
       
    91 	ETopicIndexTable,
       
    92 	EContextTable,
       
    93 	EImageTable
       
    94 	};
       
    95 
       
    96 
       
    97 class CHlpTable;
       
    98 
       
    99 // CHlpDbWriter class: creates the store and the database, and provides the interface to write to the file
       
   100 class CHlpDbWriter : public CBase
       
   101 /**
       
   102 @internalComponent
       
   103 @released
       
   104 */
       
   105 	{
       
   106 public:
       
   107 	IMPORT_C	~CHlpDbWriter();
       
   108 	IMPORT_C	static CHlpDbWriter* NewL(RFs& aFs);
       
   109 	IMPORT_C	static CHlpDbWriter* NewLC(RFs& aFs);
       
   110 public:
       
   111 	IMPORT_C	void CreateFileL(const TDesC& aFileName);
       
   112 	IMPORT_C	void CreateDatabaseL();
       
   113 	IMPORT_C	void CompressDatabaseL();
       
   114 	IMPORT_C	void SetDatabaseUidL(TUid& aUid);
       
   115 	IMPORT_C	void CloseFileL();
       
   116 public:
       
   117 	IMPORT_C	void AddBitmapL(TInt aBitmapId);
       
   118 	IMPORT_C	TBool IsBitmapStored(TInt aBitmapId) const;
       
   119 	IMPORT_C	TInt BitmapCount() const;
       
   120 	IMPORT_C	TInt BitmapIdForIndex(TInt aIndex) const;
       
   121 public:
       
   122 	IMPORT_C	void BeginTransaction();
       
   123 	IMPORT_C	void CommitTransaction();
       
   124 public:
       
   125 	IMPORT_C	CHlpTable* TopicTable();
       
   126 	IMPORT_C	CHlpTable* IndexTable();
       
   127 	IMPORT_C	CHlpTable* TopicIndexTable();
       
   128 	IMPORT_C	CHlpTable* ContextTable();
       
   129 	IMPORT_C	CHlpTable* ImageTable();
       
   130 	IMPORT_C	void SetUidL(TUid aUid);
       
   131 private:
       
   132 	void DoCreateDatabaseL();
       
   133 	CHlpTable* DoOpenTableLC(TInt aTable);
       
   134 	void DoOpenTablesL();
       
   135 	void StoreUidsL();
       
   136 	void StoreStreamDictionaryL();
       
   137 private:
       
   138 	CHlpDbWriter(RFs& aFs);
       
   139 	void ConstructL();
       
   140 private:
       
   141 	RFs& iFs;
       
   142 	TFileName iFileName;
       
   143 
       
   144 	RDbStoreDatabase iDatabase;
       
   145 	CArrayFixFlat<TUid>* iUids;
       
   146 	CArrayPtrFlat<CHlpTable>* iTables;
       
   147 	CArrayFixFlat<TUid>* iImagesAlreadyStored;
       
   148 
       
   149 	CPermanentFileStore* iStore;
       
   150 	CStreamDictionary* iDictionary;
       
   151 	};
       
   152 
       
   153 class THlpStoreResolver : public MRichTextStoreResolver
       
   154 /**
       
   155 @internalComponent
       
   156 @released
       
   157 */
       
   158 	{
       
   159 public:
       
   160 	virtual const CStreamStore& StreamStoreL(TInt aPos) const;
       
   161 	CStreamStore* iStore;
       
   162 	};
       
   163 
       
   164 // CHlpRowSet class: abstract class for accessing database tables
       
   165 class CHlpRowSet : public CBase
       
   166 /**
       
   167 @internalComponent
       
   168 @released
       
   169 */
       
   170 	{
       
   171 public:
       
   172 	CHlpRowSet(RDbView* aView);
       
   173 	IMPORT_C	virtual ~CHlpRowSet();
       
   174 	IMPORT_C	TBool AtRow();
       
   175 	IMPORT_C	TBool AtBeginning();	
       
   176 	IMPORT_C	TBool AtEnd();
       
   177 	IMPORT_C	TBool FirstL();
       
   178 	IMPORT_C	TBool LastL();
       
   179 	IMPORT_C	TInt  CountL();
       
   180 public:
       
   181 	IMPORT_C	void NextL();
       
   182 	IMPORT_C	void PreviousL();
       
   183 public:
       
   184 	IMPORT_C	TDbColNo MapColNameToColNo(const TDbCol& aCol);
       
   185 	IMPORT_C	TDbColNo MapColNameToColNo(const TDesC& aName);
       
   186 	IMPORT_C	CDbColSet* ColSet();
       
   187 
       
   188 	IMPORT_C	RDbView* View();
       
   189 private:
       
   190 	RDbView* iView;
       
   191 	};
       
   192 
       
   193 // CHlpView class: concrete class used for accessing database tables (for test code)
       
   194 class CHlpView : public CHlpRowSet
       
   195 /**
       
   196 @internalComponent
       
   197 @released
       
   198 */
       
   199 	{
       
   200 public:
       
   201 	IMPORT_C	static CHlpView* NewL(RDbView* aView);
       
   202 	IMPORT_C	static CHlpView* NewLC(RDbView* aView);
       
   203 	~CHlpView();
       
   204 public:
       
   205 	inline void SetPictureFactory(MPictureFactory* aPictureFactory) {iPictureFactory=aPictureFactory;};
       
   206 public:
       
   207 	IMPORT_C	void GetTextL(TDbColNo aCol, TDes& aText);
       
   208 	IMPORT_C	void GetRichTextL(TDbColNo aTextCol, TDbColNo aMarkupCol, CRichText& aRichText);
       
   209 	IMPORT_C	void GetValL(TDbColNo aCol, TUint32& aValue);
       
   210 	IMPORT_C	void GetL();
       
   211 private:
       
   212 	void GetMarkupL(CRichText& aRichText, TDbColNo aMarkupCol);
       
   213 private:
       
   214 	CHlpView(RDbView* aView);
       
   215 	void ConstructL();
       
   216 private:
       
   217 	THlpStoreResolver iStoreResolver;
       
   218 	MPictureFactory *iPictureFactory;
       
   219 	TBool iHasRows;
       
   220 	};
       
   221 
       
   222 // CHlpTable class: concrete class used for writing to database tables
       
   223 class CHlpTable : public CHlpRowSet
       
   224 /**
       
   225 @internalComponent
       
   226 @released
       
   227 */
       
   228 	{
       
   229 public:
       
   230 	IMPORT_C	static CHlpTable* NewL(RDbView* aView);
       
   231 	IMPORT_C	static CHlpTable* NewLC(RDbView* aView);
       
   232 	~CHlpTable();
       
   233 public:
       
   234 	IMPORT_C	void InsertL();
       
   235 	IMPORT_C	void PutL();
       
   236 public:
       
   237 	IMPORT_C	void SetColL(TDbColNo aCol, const TDesC& aText);
       
   238 	IMPORT_C	void SetColL(TDbColNo aTextCol, TDbColNo aMarkupCol, CRichText& aRichText);
       
   239 	IMPORT_C	void SetColL(TDbColNo aTextCol, CRichText& aRichText);
       
   240 	IMPORT_C	void SetColL(TDbColNo aCol, TUint32 aValue);
       
   241 	IMPORT_C	void SetColL(TDbColNo aCol, const CFbsBitmap& aBitmap);
       
   242 private:
       
   243 	void SetMarkupL(CRichText& aRichText, TDbColNo aMarkupCol);
       
   244 	void SetLongTextL(const TDesC& aText, TDbColNo aLongTextCol);
       
   245 private:
       
   246 	CHlpTable(RDbView* aView); 
       
   247 	void ConstructL();
       
   248 	};
       
   249 
       
   250 #endif