//--------------------------------------------------------------------
//--------------------------------------------------------------------
//
void CPosLmNameIndex::SaveL( TChar aDrive )
{
RDbTable table;
TInt err = table.Open( iDatabase, KPosLmIndexTable, RDbRowSet::EUpdatable );
if ( err == KErrNotFound )
{
PosLmDatabaseManager::CreateIndexTableL( iDatabase );
err = table.Open( iDatabase, KPosLmIndexTable, RDbRowSet::EUpdatable );
}
User::LeaveIfError( err );
CleanupClosePushL( table );
TInt currentSize = 0;
table.FirstL();
if ( table.AtEnd() )
{
table.InsertL();
}
else
{
table.GetL();
currentSize = table.ColSize( EPosLmIncIndexDataCol );
table.UpdateL();
}
if ( currentSize < DataSize() )
{
// check disk size
CPosLmDiskUtilities* diskUtilities = CPosLmDiskUtilities::NewL();
CleanupStack::PushL( diskUtilities );
TInt bytesToWrite = DataSize() - currentSize;
diskUtilities->DiskSpaceBelowCriticalLevelL( bytesToWrite, aDrive );
CleanupStack::PopAndDestroy( diskUtilities );
}
// current language
table.SetColL( EPosLmIncLanguageCol, User::Language() );
// index data
RDbColWriteStream writeStream;
writeStream.OpenL( table, EPosLmIncIndexDataCol );
CleanupClosePushL( writeStream );
ExternalizeL( writeStream );
CleanupStack::PopAndDestroy( &writeStream );
// index timestamp
TTime now;
now.UniversalTime();
table.SetColL( EPosLmIncTimestampCol, now );
#ifdef _DEBUG
TBuf<64> mtime;
now.FormatL( mtime, KPosLmTimeFormat );
LOG1( "NameIndex: Saving index timestamp %S", &mtime);
#endif
table.PutL();
CleanupStack::PopAndDestroy ( &table );
iTimeStamp = now;
}
//--------------------------------------------------------------------
//--------------------------------------------------------------------
//
void CPosLmNameIndex::LoadL()
{
// Skip index loading for empty databases
TInt numLandmarks = PosLmServerUtility::TotalLandmarkCountL( iDbAccess );
if ( numLandmarks == 0 )
{
iTimeStamp.UniversalTime();
iStatus = KErrNone;
return;
}
RDbTable table;
TInt err = table.Open( iDatabase, KPosLmIndexTable, RDbRowSet::EReadOnly );
if ( err )
{
LOG("NameIndex::LoadL: index table not found");
User::Leave( err );
}
CleanupClosePushL( table );
table.FirstL();
if ( table.AtEnd() )
{
LOG("NameIndex::LoadL: index not found");
User::Leave( KErrNotFound );
}
table.GetL();
// verify that index is valid for current language
if ( !table.IsColNull( EPosLmIncLanguageCol ) )
{
TLanguage lang = (TLanguage) table.ColInt32( EPosLmIncLanguageCol );
if ( User::Language() != lang )
{
LOG2("NameIndex::LoadL: index not valid, lang %d, current lang %d",
lang, User::Language() );
User::Leave( KErrCorrupt );
}
}
else
{
LOG("NameIndex::LoadL: index lang not found");
User::Leave( KErrCorrupt );
}
// read the index
if ( !table.IsColNull( EPosLmIncIndexDataCol ) )
{
RDbColReadStream readStream;
readStream.OpenL( table, EPosLmIncIndexDataCol );
CleanupClosePushL( readStream );
InternalizeL( readStream );
CleanupStack::PopAndDestroy( &readStream );
// basic check for the index
if ( Count() != numLandmarks )
{
LOG2("NameIndex::LoadL: index not valid, count %d, landmarks in db %d",
Count(), numLandmarks );
User::Leave( KErrCorrupt );
}
}
else
{
LOG("NameIndex::LoadL: index data not found");
User::Leave( KErrCorrupt );
}
// read the time stamp
iTimeStamp.UniversalTime();
if ( !table.IsColNull( EPosLmIncTimestampCol ) )
{
iTimeStamp = table.ColTime( EPosLmIncTimestampCol );
}
else
{
LOG("NameIndex::LoadL: index timestamp not found");
User::Leave( KErrCorrupt );
}
CleanupStack::PopAndDestroy ( &table );
// index is valid
iStatus = KErrNone;
}