// Copyright (c) 2006-2010 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:

 // /////////////////////          TSqlBufRIterator class          /////////////////////////////////////////

 // 

 //

 /**

  Initializes the iterator.

  After the initialization the iterator points to the first flat buffer field - 1.

  @param aBuf A reference to the buffer which will be iterated.

 */

 inline void TSqlBufRIterator::Set(const RSqlBufFlat& aBuf)

 	{

 	iBegin = aBuf.Header();

 	iCurrent = iBegin - 1;

 	iEnd = iBegin + aBuf.Count();

 	}

 /**

 Moves to the next flat buffer field

 @return False if there are no more fields to be iterated.

 */

 inline TBool TSqlBufRIterator::Next()

 	{

 	return ++iCurrent < iEnd;

 	}

 /**

 Moves to the specified field in the flat buffer.

 @param aIndex Field index

 */

 inline void TSqlBufRIterator::MoveTo(TInt aIndex)

 	{

 	__ASSERT_DEBUG((iBegin + (TUint)aIndex) < iEnd, __SQLPANIC(ESqlPanicBadArgument));

 	iCurrent = iBegin + aIndex;

 	}

 /**

 @return True if the current flat buffer field is "Present"

 */

 inline TBool TSqlBufRIterator::IsPresent() const

 	{

 	__ASSERT_DEBUG(iCurrent >= iBegin && iCurrent < iEnd, __SQLPANIC(ESqlPanicInternalError));

 	return iCurrent->iPos > 0;

 	}

 /**

 @return Current flat buffer field type. One of TSqlColumnType enum item values or ESqlText8.

 */

 inline TInt TSqlBufRIterator::Type() const

 	{

 	__ASSERT_DEBUG(iCurrent >= iBegin && iCurrent < iEnd, __SQLPANIC(ESqlPanicInternalError));

 	return iCurrent->Type();

 	}

 /**

 @return Current flat buffer field size

 */

 inline TInt TSqlBufRIterator::Size() const

 	{

 	__ASSERT_DEBUG(iCurrent >= iBegin && iCurrent < iEnd, __SQLPANIC(ESqlPanicInternalError));

 	return Type() == ESqlText ? iCurrent->Size() / sizeof(TUint16) : iCurrent->Size();

 	}

 ///////////////////////////////////////////////////////////////////////////////////////////////////////////

 ////////////////////////                 TSqlBufWIterator class          //////////////////////////////////

 ///////////////////////////////////////////////////////////////////////////////////////////////////////////

 /**

 Initializes the iterator.

 After the initialization the iterator points to the first flat buffer field - 1.

 @param aBuf A reference to the buffer which will be iterated.

 */

 inline void TSqlBufWIterator::Set(RSqlBufFlat& aBuf)

 	{

 	iBuf = &aBuf;

 	iIndex = -1;

 	}

 /**

 Moves to the next flat buffer field

 @return False if there are no more fields to be iterated.

 */

 inline TBool TSqlBufWIterator::Next()

 	{

 	__ASSERT_DEBUG(iBuf != NULL, __SQLPANIC(ESqlPanicInternalError));

 	return ++iIndex < iBuf->Count();	

 	}

 /**

 Moves to the specified field in the flat buffer.

 @param aIndex Field index

 */

 inline void TSqlBufWIterator::MoveTo(TInt aIndex)

 	{

 	__ASSERT_DEBUG(iBuf != NULL, __SQLPANIC(ESqlPanicInternalError));

 	__ASSERT_DEBUG((TUint)aIndex < iBuf->Count(), __SQLPANIC(ESqlPanicInternalError));

 	iIndex = aIndex;

 	}

 /**

 Sets the current flat buffer field to NULL.

 */

 inline void TSqlBufWIterator::SetNull()

 	{

 	__ASSERT_DEBUG(iBuf != NULL, __SQLPANIC(ESqlPanicInternalError));

 	__ASSERT_DEBUG((TUint)iIndex < iBuf->Count(), __SQLPANIC(ESqlPanicInternalError));

 	(void)iBuf->SetField(iIndex, ESqlNull, NULL, 0);

 	}

 /**

 Sets the current flat buffer field as "Not present".

 @param aType Field type. One of TSqlColumnType enum item values or ESqlText8.

 @param aLength Field length in bytes

 */

 inline void TSqlBufWIterator::SetAsNotPresent(TInt aType, TInt aLength)

 	{

 	__ASSERT_DEBUG(::IsSequenceSqlType(aType), __SQLPANIC(ESqlPanicBadArgument));

 	__ASSERT_DEBUG(aLength >= 0, __SQLPANIC(ESqlPanicBadArgument));

 	__ASSERT_DEBUG(iBuf != NULL, __SQLPANIC(ESqlPanicInternalError));

 	__ASSERT_DEBUG((TUint)iIndex < iBuf->Count(), __SQLPANIC(ESqlPanicInternalError));

 	iBuf->SetField(iIndex, aType, NULL, aType == ESqlText ? aLength * sizeof(TUint16) : aLength);

 	}

 /**

 Initializes current flat buffer field with an integer value.

 @param aValue An integer value to be set as a field content

 @return KErrNone, The operation has completed successfully;

 		KErrNoMemory, Out of memory condition has occured.

 */

 inline TInt TSqlBufWIterator::SetInt(TInt aValue)

 	{

 	__ASSERT_DEBUG(iBuf != NULL, __SQLPANIC(ESqlPanicInternalError));

 	__ASSERT_DEBUG((TUint)iIndex < iBuf->Count(), __SQLPANIC(ESqlPanicInternalError));

 	return iBuf->SetField(iIndex, ESqlInt, &aValue, sizeof(TInt));

 	}

 /**

 Initializes current flat buffer field with an 64 bit integer value.

 @param aValue A 64 bit integer value to be set as a field content

 @return KErrNone, The operation has completed successfully;

 		KErrNoMemory, Out of memory condition has occured.

 */

 inline TInt TSqlBufWIterator::SetInt64(TInt64 aValue)

 	{

 	__ASSERT_DEBUG(iBuf != NULL, __SQLPANIC(ESqlPanicInternalError));

 	__ASSERT_DEBUG((TUint)iIndex < iBuf->Count(), __SQLPANIC(ESqlPanicInternalError));

 	return iBuf->SetField(iIndex, ESqlInt64, &aValue, sizeof(TInt64));

 	}

 /**

 Initializes current flat buffer field with a real value.

 @param aValue A real value to be set as a field content

 @return KErrNone, The operation has completed successfully;

 		KErrNoMemory, Out of memory condition has occured.

 */

 inline TInt TSqlBufWIterator::SetReal(TReal aValue)

 	{

 	__ASSERT_DEBUG(iBuf != NULL, __SQLPANIC(ESqlPanicInternalError));

 	__ASSERT_DEBUG((TUint)iIndex < iBuf->Count(), __SQLPANIC(ESqlPanicInternalError));

 	return iBuf->SetField(iIndex, ESqlReal, &aValue, sizeof(TReal));

 	}

 /**

 Initializes current flat buffer field with a block of binary data.

 @param aValue An 8 bit descriptor pointing to the block of data to be set as a field content.

 @return KErrNone, The operation has completed successfully;

 		KErrNoMemory, Out of memory condition has occured.

 */

 inline TInt TSqlBufWIterator::SetBinary(const TDesC8& aValue)

 	{

 	__ASSERT_DEBUG(iBuf != NULL, __SQLPANIC(ESqlPanicInternalError));

 	__ASSERT_DEBUG((TUint)iIndex < iBuf->Count(), __SQLPANIC(ESqlPanicInternalError));

 	return iBuf->SetField(iIndex, ESqlBinary, aValue.Ptr(), aValue.Length());

 	}

 /**

 Initializes current flat buffer field with a block of 16 bit text.

 @param aValue A 16 bit descriptor pointing to the block of text to be set as a field content.

 @return KErrNone, The operation has completed successfully;

 		KErrNoMemory, Out of memory condition has occured.

 */

 inline TInt TSqlBufWIterator::SetText(const TDesC16& aValue)

 	{

 	__ASSERT_DEBUG(iBuf != NULL, __SQLPANIC(ESqlPanicInternalError));

 	__ASSERT_DEBUG((TUint)iIndex < iBuf->Count(), __SQLPANIC(ESqlPanicInternalError));

 	return iBuf->SetField(iIndex, ESqlText, aValue.Ptr(), aValue.Length() * sizeof(TUint16));

 	}

 /**

 Initializes current flat buffer field with a zeroblob of the specified size.

 @param aSize The size, in bytes, of the zeroblob to be set as the field content.

 @return KErrNone, The operation has completed successfully;

 		KErrNoMemory, Out of memory condition has occured.

 */

 inline TInt TSqlBufWIterator::SetZeroBlob(TInt aSize)

 	{

 	__ASSERT_DEBUG(iBuf != NULL, __SQLPANIC(ESqlPanicInternalError));

 	__ASSERT_DEBUG((TUint)iIndex < iBuf->Count(), __SQLPANIC(ESqlPanicInternalError));

 	return iBuf->SetField(iIndex, ESqlZeroBlob, &aSize, sizeof(TInt));

 	}