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/*
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* Copyright (c) 2005,2006 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: Flyweigth pattern implementation for dom strings.
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*
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*/
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#ifndef XN_DOM_STRING_POOL_H
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#define XN_DOM_STRING_POOL_H
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// INCLUDES
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#include <e32base.h>
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#include <s32strm.h>
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#include "xndomstringpooloptimizer.h"
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// CLASS DECLARATION
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/**
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* @ingroup group_domdocument
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* Class utilize flyweight pattern. Dom strings are stored once
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* and referred with index. Class can be serialized.
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*
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* @lib xndomdocument.lib
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* @since Series 60 3.1
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*/
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class CXnDomStringPool : public CBase
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{
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public: // Constructors and destructor
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/**
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* Two-phased constructor.
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*
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* @param aAllowDuplicates ETrue if duplicates are to be allowed.
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* Supported for legacy reasons.
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*/
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static CXnDomStringPool* NewL( const TBool aAllowDuplicates = EFalse );
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/**
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* Two-phased stream constructor.
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*
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* @param aStream Stream where string pool is internalized.
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* @param aAllowDuplicates ETrue if duplicates are to be allowed.
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* Supported for legacy reasons.
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*/
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static CXnDomStringPool* NewL( RReadStream& aStream,
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const TBool aAllowDuplicates = EFalse );
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/**
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* Destructor.
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*/
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virtual ~CXnDomStringPool();
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public:
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/**
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* Make a copy from original StringPool.
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* @since Series 60 3.1
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* @return Pointer to a string pool. Ownership is transferred to a caller.
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*/
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CXnDomStringPool* CloneL();
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public: //Adding
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/**
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* Set dom string into string pool.
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*
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* @param aString String to add to string pool
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* @return Index (reference) to string pool
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*/
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TInt AddStringL( const TDesC8& aString );
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/**
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* Set dom string into string pool.
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*
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* @param aString String to add to string pool. OWNERSHIP TRANSFERRED!
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* @return Index (reference) to string pool
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*/
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TInt AddStringL( HBufC8* aString );
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/**
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* Add all string from another string pool.
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*
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* @param aStringPool Source string pool.
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*/
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void AddAllL( CXnDomStringPool& aStringPool );
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public: //Accessing
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/**
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* Get reference to string.
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*
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* @param aMap Map object which has index to name string
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* @return Pointer to the name
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*/
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const TDesC8& String( const TInt aStringRef );
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/**
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* Get object's data size in bytes.
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*
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* @return Data size in bytes
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*/
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TInt Size() const;
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/**
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* Get amount of strings.
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*/
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TInt Count() const;
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/**
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* Externalize object.
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*
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* @param aStream Output stream
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*/
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void ExternalizeL( RWriteStream& aStream ) const;
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/**
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* Internalize object.
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*
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* @param aStream Input stream
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*/
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void InternalizeL( RReadStream& aStream );
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private:
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/**
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* C++ default constructor.
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*
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* @param aAllowDuplicates ETrue if duplicates are to be allowed.
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* Supported for legacy reasons.
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*/
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CXnDomStringPool( const TBool aAllowDuplicates );
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/**
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* By default Symbian 2nd phase constructor is private.
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*/
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void ConstructL();
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/**
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* Add string to string pool and to optimizer also.
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*
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* @param aNewString String to be added. OWNERSHIP TRANSFERRED.
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* @param TInt Index to added string.
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*/
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TInt DoAddStringL( HBufC8* aNewString ) ;
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private:
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//String pool
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RPointerArray<HBufC8> iStringPool;
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/**
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* String pool optimizer.
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*/
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TXnDomStringPoolOptimizer iStringPoolOptimizer;
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/**
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* ETrue if string pool can contain duplicate entries. Must
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* be supported for legacy reasons while loading xuikon odts.
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*/
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TBool iAllowDuplicates;
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};
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#endif // XN_DOM_STRING_POOL_H
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// End of File
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