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// Copyright (c) 2002-2009 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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//
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#ifndef __LOGSERVCACHECONFIG_H__
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#define __LOGSERVCACHECONFIG_H__
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#include <logcli.h>
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// Classes referenced
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class MLogServDatabaseTransactionInterface;
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/**
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Caches a copy of the LogEng configuration data (a TLogConfig instance).
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Provides public methods for retrieving/updating the configuration data.
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if the configuration data is updated in a transaction, the changes will be committed/rolled back
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when the transaction is committed/rolled back.
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Note: the LogEng configuration is kept in a database table with name "Config".
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@see TLogConfig
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@see MLogServDatabaseTransactionInterface
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@internalComponent
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*/
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class CLogServCacheConfig : public CBase
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{
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public:
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static CLogServCacheConfig* NewL(MLogServDatabaseTransactionInterface& aDatabase);
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~CLogServCacheConfig();
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const TLogConfig& Config() const;
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void UpdateL(const TLogConfig& aConfig);
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#ifdef _DEBUG
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inline TBool InTransaction() const;
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#endif
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void Commit();
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inline void Rollback();
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private:
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CLogServCacheConfig(MLogServDatabaseTransactionInterface& aDatabase);
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void ConstructL();
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void ReadL();
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private:
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MLogServDatabaseTransactionInterface& iDatabase;
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TLogConfig iConfig;//The last good configuration value. Essentially, the current configuration
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TLogConfig iRequestedConfiguration;//The requested configuration
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TBool iInTransaction;//Indicates whether the configuration cache is currently within an update transaction
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};
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#ifdef _DEBUG
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/**
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Indicates whether a configuration transaction has begun
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*/
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inline TBool CLogServCacheConfig::InTransaction() const
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{
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return iInTransaction;
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}
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#endif//_DEBUG
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/**
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Roll back a configuration transaction
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*/
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inline void CLogServCacheConfig::Rollback()
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{
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// Nothing really to do here other than discard the transaction status
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// (ready to start over again).
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iInTransaction = EFalse;
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}
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#endif
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