/*

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

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

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

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Serialize query criteria

*

*/

#include "mdequerycriteriaserialization.h"

#include "mdelogiccondition.h"

#include "mdepropertydef.h"

#include "mdenamespacedef.h"

#include "mdeobjectdef.h"

#include "mdcquery.h"

#include "mdcserializationbuffer.h"

CMdEQueryCriteriaSerialization* CMdEQueryCriteriaSerialization::NewL(

	TQueryResultMode aResultMode, TQueryType aQueryType, 

	CMdENamespaceDef& aNamespaceDef, 

	CMdEObjectDef* aObjectDef, RPointerArray<CMdEObjectDef>* aObjectDefs, 

	TUint32 aLimit, TUint32 aOffset, TUint32 aQueryOptimizationFlags,

	CMdELogicCondition& aRootCondition, RArray<TMdEOrderRule>& aOrderRule, 

	RPointerArray<CMdEPropertyDef>* aPropertyFilter)

	{

    CMdEQueryCriteriaSerialization* serialization = 

    	CMdEQueryCriteriaSerialization::NewLC( aResultMode, aQueryType,

    										   aNamespaceDef, aObjectDef, aObjectDefs, 

    										   aLimit, aOffset, aQueryOptimizationFlags,

    										   aRootCondition, aOrderRule,

    										   aPropertyFilter );

    CleanupStack::Pop( serialization );

    return serialization;

    }

CMdEQueryCriteriaSerialization* CMdEQueryCriteriaSerialization::NewLC(

	TQueryResultMode aResultMode, TQueryType aQueryType, 

	CMdENamespaceDef& aNamespaceDef, 

	CMdEObjectDef* aObjectDef, RPointerArray<CMdEObjectDef>* aObjectDefs, 

	TUint32 aLimit, TUint32 aOffset, TUint32 aQueryOptimizationFlags, 

	CMdELogicCondition& aRootCondition, RArray<TMdEOrderRule>& aOrderRule, 

	RPointerArray<CMdEPropertyDef>* aPropertyFilter)

	{

    CMdEQueryCriteriaSerialization* serialization = 

    	new( ELeave ) CMdEQueryCriteriaSerialization( ETrue ); // Owns serialized buffer

    CleanupStack::PushL( serialization );

    serialization->ConstructL( aResultMode, aQueryType,

    						   aNamespaceDef, aObjectDef, aObjectDefs, 

    						   aLimit, aOffset, aQueryOptimizationFlags,

    						   aRootCondition, aOrderRule,

    						   aPropertyFilter );

    return serialization;

	}

CMdEQueryCriteriaSerialization* CMdEQueryCriteriaSerialization::NewL(

	CMdCSerializationBuffer& aSerializationBuffer)

	{

    CMdEQueryCriteriaSerialization* serialization = 

    	CMdEQueryCriteriaSerialization::NewLC( aSerializationBuffer );

    CleanupStack::Pop( serialization );

    return serialization;

	}

CMdEQueryCriteriaSerialization* CMdEQueryCriteriaSerialization::NewLC(

	CMdCSerializationBuffer& aSerializationBuffer)

	{

    CMdEQueryCriteriaSerialization* serialization = 

    	new( ELeave ) CMdEQueryCriteriaSerialization( EFalse ); // Doesn't own serialized buffer

    CleanupStack::PushL( serialization );

    serialization->iSerializedBuffer = &aSerializationBuffer;

    return serialization;

	}

CMdEQueryCriteriaSerialization::~CMdEQueryCriteriaSerialization()

	{

	if( iOwnSerializedBuffer )

		{

		delete iSerializedBuffer;

		}

	}

TPtr8 CMdEQueryCriteriaSerialization::Buffer() const

	{

	return iSerializedBuffer->Buffer();

	}

const TPtr8* CMdEQueryCriteriaSerialization::BufferPtr() const

	{

	return iSerializedBuffer->BufferPtr();

	}

CMdCSerializationBuffer& CMdEQueryCriteriaSerialization::SerializationBuffer()

	{

	return *iSerializedBuffer;

	}

CMdEQueryCriteriaSerialization::CMdEQueryCriteriaSerialization(TBool aOwnSerializedBuffer)

	: iSerializedBuffer( NULL ), iOwnSerializedBuffer( aOwnSerializedBuffer )

	{

	}

void CMdEQueryCriteriaSerialization::ConstructL(

	TQueryResultMode aResultMode, TQueryType aQueryType, 

	CMdENamespaceDef& aNamespaceDef, 

	CMdEObjectDef* aObjectDef, RPointerArray<CMdEObjectDef>* aObjectDefs, 

	TUint32 aLimit, TUint32 aOffset, TUint32 aQueryOptimizationFlags, 

	CMdELogicCondition& aRootCondition, RArray<TMdEOrderRule>& aOrderRules, 

	RPointerArray<CMdEPropertyDef>* aPropertyFilter)

	{

	// If aResultMode is EModeDistinctValues aQueryType must be CMdEQuery::ETypeObject

	if( EQueryResultModeDistinctValues == aResultMode )

		{

		if( EQueryTypeObject != aQueryType )

			{

			User::Leave( KErrNotSupported );

			}

		else

			{

			// Order rules might also contain one order rule and it must be 

			// same as defined in propery condition.

			if( aOrderRules.Count() > 1 )

				{

				User::Leave( KErrCompletion );

				}

			// One property filter must exist and it must be same as property condition

			if( aPropertyFilter )

				{

				if( aPropertyFilter->Count() != 1 )

					{

					User::Leave( KErrCompletion );

					}

				}

			else

				{

				User::Leave( KErrCompletion);

				}

			}

		}

	TUint32 criteriaBufferSize = sizeof( TMdCSearchCriteria );

	// Required size for object defs IDs

	TUint32 objectDefIdCount = 0;

	if( aObjectDefs )

		{

		objectDefIdCount = aObjectDefs->Count();

		criteriaBufferSize += objectDefIdCount * 

				CMdCSerializationBuffer::KRequiredSizeForTDefId;

		}

	// Required size for conditions

	criteriaBufferSize += aRootCondition.RequiredBufferSize();

	// Required size for order rule offsets

	const TInt orderRuleCount = aOrderRules.Count();

	criteriaBufferSize += orderRuleCount * 

			CMdCSerializationBuffer::KRequiredSizeForTUint32;

	// Required size for order rules

	for( TInt i = orderRuleCount - 1; i >=0; i-- )

		{

		criteriaBufferSize += aOrderRules[i].RequiredBufferSize();

		}

	// Required size for property filters

	TUint32 propertyFilterCount = 0;

	if( aPropertyFilter )

		{

		propertyFilterCount = aPropertyFilter->Count();

		criteriaBufferSize += propertyFilterCount * 

			CMdCSerializationBuffer::KRequiredSizeForTDefId;

		}

	// Reserve buffer

	iSerializedBuffer = CMdCSerializationBuffer::NewL( criteriaBufferSize );

	// Insert data to search criteria

	TMdCSearchCriteria criteria;

	criteria.iQueryResultType = aResultMode;

	criteria.iQueryType = aQueryType;

	criteria.iNamespaceDefId = aNamespaceDef.Id();

	if( aObjectDef )

		{

		criteria.iObjectDefId = aObjectDef->Id();

		}

	else

		{

		criteria.iObjectDefId = KNoDefId;

		}

	criteria.iObjectDefIds.iPtr.iCount = objectDefIdCount;

	// init offset to "zero", will be updated later if needed

	criteria.iObjectDefIds.iPtr.iOffset = KNoOffset;

	criteria.iLimit = aLimit;

	criteria.iOffset = aOffset;

	criteria.iOptimizationFlags = aQueryOptimizationFlags;

	// init offset to "zero", will be updated later

	criteria.iRootCondition = KNoOffset;

	criteria.iOrderRules.iPtr.iCount = orderRuleCount;

	// init offset to "zero", will be updated later if needed

	criteria.iOrderRules.iPtr.iOffset = KNoOffset;

	criteria.iPropertyFilters.iPtr.iCount = propertyFilterCount;

	// init offset to "zero", will be updated later if needed

	criteria.iPropertyFilters.iPtr.iOffset = KNoOffset;

	// Insert data to serialized buffer

	// Position after search criteria

	const TUint32 afterCriteriaOffset = sizeof( TMdCSearchCriteria );

	// Move to position after search criteria

	iSerializedBuffer->PositionL( afterCriteriaOffset );

	if( aObjectDefs )

		{

		// Update object defs offset to search criteria

		criteria.iObjectDefIds.iPtr.iOffset = afterCriteriaOffset;

		// Update object defs count

		for( TUint32 i = 0; i < objectDefIdCount; i++ )

			{

			TDefId defId = (*aObjectDefs)[i]->Id();

			iSerializedBuffer->InsertL( defId );

			}

		}

	// Update root condition offset to position after search criteria 

	// (and possible object defs IDs)

	criteria.iRootCondition = iSerializedBuffer->Position();

	TUint32 offset = KNoOffset;

	// Insert root condition to serialized buffer

	aRootCondition.SerializeL( *iSerializedBuffer, offset );

	// move position after conditions

	iSerializedBuffer->PositionL( offset );

	if( orderRuleCount > 0 )

		{

		// Update order rule offset to position after search criteria 

		// (and possible object defs IDs) and root condition

		criteria.iOrderRules.iPtr.iOffset = iSerializedBuffer->Position();

		for( TUint32 i = 0; i < orderRuleCount; i++)

			{

			// Insert current order rule

			aOrderRules[i].SerializeL( *iSerializedBuffer, offset );

			}

		}

	// move position after order rules

	iSerializedBuffer->PositionL( offset );

	if( aPropertyFilter )

		{

		// Update order property filter offset to position after search 

		// criteria (and possible object defs IDs), 

		// root condition and order rules

		criteria.iPropertyFilters.iPtr.iOffset = iSerializedBuffer->Position();

		for( TUint32 i = 0; i < propertyFilterCount; i++ )

			{

			CMdEPropertyDef* propertyDef = (*aPropertyFilter)[i];

			iSerializedBuffer->InsertL( propertyDef->Id() );

			}

		}

	// move buffer to begin and serialize search criteria

	iSerializedBuffer->PositionL( KNoOffset );

	criteria.SerializeL( *iSerializedBuffer );

	}