// Copyright (c) 1998-2009 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:

 //

 #include "UT_STD.H"

 // Class CDbTableIndexDef

 EXPORT_C CDbTableIndexDef::CDbTableIndexDef()

 	{}

 EXPORT_C CDbTableIndexDef::~CDbTableIndexDef()

 	{

 	delete iName;

 	}

 EXPORT_C void CDbTableIndexDef::ConstructL(const TDesC& aName)

 //

 // Construct with an empty key

 //

 	{

 	iName=aName.AllocL();

 	}

 // Class RDbIndexes

 void RDbIndexes::Close()

 	{

 	TSglQueIter<CDbTableIndexDef> iter(iRep);

 	for (CDbTableIndexDef* def;(def=iter++)!=0;)

 		delete def;

 	}

 CDbTableIndexDef* RDbIndexes::Find(const TDesC& aName) const

 //

 // Locate and index on the table by name

 //

 	{

 	TSglQueIter<CDbTableIndexDef> iter(CONST_CAST(TSglQue<CDbTableIndexDef>&,iRep));

 	for (CDbTableIndexDef* def;(def=iter++)!=0;)

 		if (aName.CompareF(def->Name())==0)

 			return def;

 	return 0;

 	}

 CDbTableIndexDef& RDbIndexes::FindL(const TDesC& aName) const

 //

 // Leave if not found

 //

 	{

 	CDbTableIndexDef* def=Find(aName);

 	if (def==NULL)

 		__LEAVE(KErrNotFound);

 	return *def;

 	}

 EXPORT_C TInt RDbIndexes::Count() const

 	{

 	TInt count = 0;

 	TSglQueIterC<CDbTableIndexDef> iter( iRep );

 	for ( ; iter++ != 0; )

 		++count;

 	return count;

 	}

 // Class TDbColumnDef

 EXPORT_C void TDbColumnDef::SetL(const TDbColumnDef& aCol)

 //

 // Replace assignment as this can leave

 //

 	{

 	iMaxLength=aCol.iMaxLength;

 	iType=aCol.iType;

 	iAttributes=aCol.iAttributes;

 	iFlags=aCol.iFlags;

 	iName=aCol.iName->AllocL();

 	}

 EXPORT_C void TDbColumnDef::SetL(const TDbCol& aCol)

 	{

 	iMaxLength=aCol.iMaxLength;

 	iType=TUint8(aCol.iType);

 	iAttributes=TUint8(aCol.iAttributes);

 	iName=aCol.iName.AllocL();

 	}

 void TDbColumnDef::AsTDbCol(TDbCol& aColumn) const

 	{

 	aColumn.iType=Type();

 	aColumn.iMaxLength=iMaxLength;

 	aColumn.iAttributes=iAttributes;

 	aColumn.iName=*iName;

 	}

 // Class HDbColumnSet

 HDbColumnSet* HDbColumnSet::NewL(TInt aCount)

 	{

 	return new(User::AllocL(_FOFF(HDbColumnSet,iColumns[aCount]))) HDbColumnSet(aCount);

 	}

 HDbColumnSet::HDbColumnSet(TInt aCount)

 	: iAttributes(0), iIndex(NULL), iEnd(&iColumns[aCount])

 	{

 	Mem::FillZ(&iColumns[0],aCount*sizeof(iColumns[0]));

 	}

 HDbColumnSet::~HDbColumnSet()

 	{

 	User::Free(iIndex);

 	const TIteratorC end=End();

 	for (TIteratorC iter=Begin();iter<end;++iter)

 		delete iter->iName;

 	}

 EXPORT_C TInt HDbColumnSet::Count() const

 	{

 	return End()-Begin();

 	}

 void HDbColumnSet::Complete()

 //

 // Called on completion of the column set

 //

 	{

 	TUint attrib=0;

 	const TIteratorC end=End();

 	for (TIteratorC iter=Begin();iter<end;++iter)

 		{

 		if (TDbCol::IsLong(iter->Type()))

 			attrib|=ELongColumns;

 		if (iter->iAttributes&TDbCol::EAutoIncrement)

 			attrib|=EAutoIncrement;

 		}

 	iAttributes=attrib;

 	}

 EXPORT_C HDbColumnSet::TIteratorC HDbColumnSet::ColumnL(const TDesC& aColumn) const

 //

 // Lookup name in the name index (binary search)

 //

 	{

 	const TIteratorC* index=IndexL();

 	TInt left=0;

 	TInt right=Count();

 	while (left<right)

 		{

 		TInt mid=(left+right)>>1;

 		TInt c=index[mid]->iName->CompareF(aColumn);

 		if (c<0)

 			left=mid+1;

 		else if (c>0)

 			right=mid;

 		else

 			return index[mid];		// matched entry

 		}

 	return 0;		// no match

 	}

 EXPORT_C TDbColNo HDbColumnSet::ColNoL(const TDesC& aColumn) const

 //

 // Return ordinal for given column name

 //

 	{

 	TIteratorC col=ColumnL(aColumn);

 	return col ? 1+(col-Begin()) : KDbNullColNo;

 	}

 const HDbColumnSet::TIteratorC* HDbColumnSet::IndexL() const

 //

 // Return the by-name lookup index, building it if required

 //

 	{

 	TIteratorC* index=iIndex;

 	if (!index)

 		{

 		CONST_CAST(TIteratorC*&,iIndex)=index=(TIteratorC*)User::AllocL(Count()*sizeof(TIteratorC));

 		TInt ii=0;

 		TIteratorC col=Begin();

 		TIteratorC end=End();

 		do

 			{

 			// binary search for insertion point

 			TInt left=0;

 			TInt right=ii;

 			while (left<right)

 				{

 				TInt mid=(left+right)>>1;

 				TInt c=index[mid]->iName->CompareF(*col->iName);

 				__ASSERT(c!=0);		// names are unique

 				if (c<0)

 					left=mid+1;

 				else

 					right=mid;

 				}

 			// insert the entry

 			Mem::Move(index+left+1,index+left,(ii-left)*sizeof(TIteratorC));

 			index[left]=col;

 			} while (++ii,++col<end);

 		}

 	return index;

 	}

 // Class CDbTableDef

 EXPORT_C CDbTableDef::CDbTableDef()

 	{}

 EXPORT_C CDbTableDef::~CDbTableDef()

 	{

 	delete iColumns;

 	delete iName;

 	iIndexes.Close();

 	}

 EXPORT_C void CDbTableDef::ConstructL(const TDesC& aName,TInt aColumnCount)

 	{

 	iName=aName.AllocL();

 	iColumns=HDbColumnSet::NewL(aColumnCount);

 	}

 void CDbTableDef::ExchangeColumnSet(HDbColumnSet* aSet)

 	{

 	delete iColumns;

 	iColumns=aSet;

 	Changed();

 	}

 EXPORT_C void CDbTableDef::Changed()

 //

 // evaluate cached info about the set

 //

 	{

 	iColumns->Complete();

 	}

 const CDbTableIndexDef* CDbTableDef::FindKey(const TDesC& aColumn,TBool aFirstColumn) const

 //

 // Find an index which keys on the given column

 //

 	{

 	TSglQueIterC<CDbTableIndexDef> indexes(Indexes().AsQue());

 	for (const CDbTableIndexDef* def;(def=indexes++)!=0;)

 		{

 		const CDbKey& key=def->Key();

 		TInt ii=0;

 		do

 			{

 			if (aColumn.CompareF(key[ii].iName)==0)

 				return def;

 			if (aFirstColumn)

 				break;

 			} while (++ii<key.Count());

 		}

 	return 0;

 	}

 // Class RDbTableSchema

 void RDbTableSchema::Discard()

 	{

 	TSglQueIter<CDbTableDef> iter(iRep);

 	for (CDbTableDef* def;(def=iter++)!=0;)

 		delete def;

 	iRep.Reset();

 	iLoaded=EFalse;

 	}

 CDbTableDef* RDbTableSchema::Find(const TDesC& aTable)

 	{

 	__ASSERT(IsLoaded());

 	TSglQueIter<CDbTableDef> iter(iRep);

 	for (CDbTableDef* def;(def=iter++)!=0;)

 		if (aTable.CompareF(def->Name())==0)

 			return def;

 	return 0;

 	}

 CDbTableDef& RDbTableSchema::FindL(const TDesC& aTable)

 //

 // Leave if not found

 //

 	{

 	CDbTableDef* def=Find(aTable);

 	if (def==NULL)

 		__LEAVE(KErrNotFound);

 	return *def;

 	}

 // Class RDbTables

 void RDbTables::Close()

 	{

 	TSglQueIter<CDbTable> iter(iRep);

 	for (CDbTable* table;(table=iter++)!=0;)

 		table->Discard();

 	}

 CDbTable* RDbTables::Find(const TDesC& aTable)

 	{

 	TSglQueIter<CDbTable> iter(iRep);

 	for (CDbTable* table;(table=iter++)!=0;)

 		if (aTable.CompareF(table->Def().Name())==0)

 			return table;

 	return 0;

 	}