--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cbs/CbsServer/ServerSrc/CCbsDbImpTopicCollection.cpp	Tue Feb 02 01:11:09 2010 +0200
@@ -0,0 +1,295 @@
+/*
+* Copyright (c) 2003 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:  This module contains the implementation of CCbsDbImpTopicCollection class 
+*                member functions.
+*    
+*                Topic collection stored in the database is represented by this class.
+*
+*/
+
+
+
+// INCLUDE FILES
+
+#include <e32svr.h>
+#include "CbsCommon.h"
+#include "CbsServerPanic.h"
+#include "CCbsDbImpTopicCollection.h"
+#include "CCbsDbImp.H"
+#include "CbsDbConstants.h"
+#include "CbsLogger.h"
+
+// CONSTANTS
+
+// These values specify a range of accepted topic number values (inclusive).
+const TInt KMinTopicNumber = 1;     // 000 is not accepted.
+const TInt KMaxTopicNumber = 999;
+// Granularity for the iIdentities array
+const TInt KIdentitiesGranularity = 10;
+
+
+// ==================== LOCAL FUNCTIONS ====================
+
+// -----------------------------------------------------------------------------
+// Print
+// Prints out debug info about topics
+// Returns: None
+// -----------------------------------------------------------------------------
+//
+#ifdef _DEBUG
+void Print( const TDesC& aText, const TInt& aValue )
+    {
+    TBuf<100> stuff;
+    TBuf<10> value;
+    value.Num( aValue );
+    stuff = aText;
+    stuff.Append(value);
+    RDebug::Print(stuff);
+    }
+
+// -----------------------------------------------------------------------------
+// PrintTopicCollectionContentL
+// Prints the contentent of the Topic Collection
+// Returns: None
+// -----------------------------------------------------------------------------
+//
+void PrintTopicCollectionContentL( const CFileStore* aStore ) 
+    {
+    RDebug::Print(_L("Current topic collection content: "));
+    TStreamId rootStreamId = aStore->Root();
+    if ( rootStreamId == 0 ) 
+        {
+        RDebug::Print(_L("Store contains no root stream."));
+        return;
+        }
+    RStoreReadStream rootStream;
+    rootStream.OpenLC( *aStore, rootStreamId ); // on CS
+    TInt identityCount( rootStream.ReadUint16L() );
+
+    for ( TInt index( 0 ); index < identityCount; index++ )
+        {
+        TCbsDbTopicIdentity id;
+        id.iName.Zero();
+        TInt length( rootStream.ReadInt16L() );
+        for ( TInt index2( 0 ); index2 < length; index2++ )
+            {
+            TInt character( rootStream.ReadInt16L() );
+            id.iName.Append( TChar(character) );
+            }
+        id.iName.SetLength( length );
+    
+        id.iNumber = rootStream.ReadUint16L();
+
+        TBuf<255> buf = _L("Identity name: ");
+        buf.Append( id.iName );
+        buf.Append( _L(", number: ") );
+        buf.AppendNum( static_cast<TInt>(id.iNumber) );
+        RDebug::Print( buf );
+        }
+   
+    CleanupStack::PopAndDestroy();    // root stream
+    }
+#endif // _DEBUG
+    
+
+// ================= MEMBER FUNCTIONS =======================
+
+// -----------------------------------------------------------------------------
+// CCbsDbImpTopicCollection::CCbsDbImpTopicCollection
+// C++ default constructor can NOT contain any code, that
+// might leave.
+// -----------------------------------------------------------------------------
+//
+CCbsDbImpTopicCollection::CCbsDbImpTopicCollection()
+    { 
+    }
+
+// -----------------------------------------------------------------------------
+// CCbsDbImpTopicCollection::ConstructL
+// Symbian 2nd phase constructor can leave.
+// -----------------------------------------------------------------------------
+//
+void CCbsDbImpTopicCollection::ConstructL( )
+    {
+    // Create an array for observers.
+    iObservers = new ( ELeave ) CArrayFixFlat<MCbsDbTopicCollectionObserver*>
+        ( KCbsDbObserverArraySize );
+
+    iIdentities = new ( ELeave ) CArrayFixFlat<TCbsDbTopicIdentity>
+        ( KIdentitiesGranularity );
+    }
+
+// -----------------------------------------------------------------------------
+// CCbsDbImpTopicCollection::NewL
+// Two-phased constructor.
+// -----------------------------------------------------------------------------
+//
+CCbsDbImpTopicCollection* CCbsDbImpTopicCollection::NewL()
+    {
+    // Normal two phase construction
+    CCbsDbImpTopicCollection* self = 
+            new ( ELeave ) CCbsDbImpTopicCollection();
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop();
+    return self;
+    }
+
+// Destructor
+CCbsDbImpTopicCollection::~CCbsDbImpTopicCollection()
+    {
+    CBSLOGSTRING("CBSSERVER: >>> CCbsDbImpTopicCollection::~CCbsDbImpTopicCollection()");
+    // Deallocate the observer array
+    delete iObservers;
+    delete iIdentities;
+    CBSLOGSTRING("CBSSERVER: <<< CCbsDbImpTopicCollection::~CCbsDbImpTopicCollection()");
+    }
+
+// -----------------------------------------------------------------------------
+// CCbsDbImpTopicCollection::GetTopicIdentityCount
+// Returns the number of topic identities stored in the database.
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CCbsDbImpTopicCollection::GetTopicIdentityCount( 
+    TInt& aCount ) const
+    {
+    aCount = iIdentities->Count();
+    }
+
+// -----------------------------------------------------------------------------
+// CCbsDbImpTopicCollection::GetTopicIdentityL
+// Returns a topic identity matching the given topic index parameter.
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CCbsDbImpTopicCollection::GetTopicIdentityL( 
+    TInt& aIndex, 
+    TCbsDbTopicIdentity& aIdentity ) const
+    {
+    if ( aIndex >= iIdentities->Count() || aIndex < 0 )
+        {
+        User::Leave( KErrNotFound );
+        }
+    
+    aIdentity = iIdentities->At( aIndex );
+    }
+
+// -----------------------------------------------------------------------------
+// CCbsDbImpTopicCollection::AddObserverL
+// Adds an observer. The observer will be informed of changes 
+// in the topic collection.
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CCbsDbImpTopicCollection::AddObserverL( 
+    MCbsDbTopicCollectionObserver* aObserver )
+    {
+    __ASSERT_DEBUG( aObserver!=0, CbsServerPanic(ECbsObserverNull) );
+    iObservers->AppendL( aObserver );
+    }
+
+// -----------------------------------------------------------------------------
+// CCbsDbImpTopicCollection::RemoveObserverL
+// Removes an observer.
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CCbsDbImpTopicCollection::RemoveObserver( 
+    const MCbsDbTopicCollectionObserver* aObserver )
+    {
+    __ASSERT_DEBUG( aObserver != 0, CbsServerPanic( ECbsObserverNull ) );
+    TInt amountOfObservers( iObservers->Count() );
+    for ( TInt index( 0 ); index < amountOfObservers; index++ )
+        {
+        if ( aObserver == iObservers->At( index ) )
+            {
+            iObservers->Delete( index );
+            return;
+            }
+        }
+#ifdef _DEBUG
+    CbsServerPanic( ECbsObserverNotFound );
+#endif
+    }
+
+// -----------------------------------------------------------------------------
+// CCbsDbImpTopicCollection::ClearL
+// Clears the topic collection.
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CCbsDbImpTopicCollection::Clear()
+    {
+    iIdentities->Reset();
+    }
+
+// -----------------------------------------------------------------------------
+// CCbsDbImpTopicCollection::Apply
+// Writes topic identity cache (array iIdentities) into a store.
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CCbsDbImpTopicCollection::Apply() 
+    {
+    NotifyObservers();
+    }
+
+// -----------------------------------------------------------------------------
+// CCbsDbImpTopicCollection::AddTopicIdentityL
+// Adds a topic identity to the topic collection. This method 
+// is called by the index message handling routine after resolving a single 
+// topic number and name out of an index message.
+// Topic identities are maintained in ascending topic number order.
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CCbsDbImpTopicCollection::AddTopicIdentityL( 
+    const TCbsDbTopicIdentity& aIdentity )
+    {
+    if ( aIdentity.iNumber < KMinTopicNumber || 
+         aIdentity.iNumber > KMaxTopicNumber )
+        {
+        User::Leave( KErrArgument );
+        }
+
+	// Insert using binary search. KErrAlreadyExists is returned, but
+	// all other error codes are passed to Leave.
+	TKeyArrayFix key( _FOFF( TCbsDbTopicIdentity, iNumber ), ECmpTUint16 );
+	TRAPD( errorCode, iIdentities->InsertIsqL( aIdentity, key ) );
+	if ( errorCode != KErrAlreadyExists )
+		{
+		User::LeaveIfError( errorCode );
+		}
+    }    
+
+// -----------------------------------------------------------------------------
+// CCbsDbImpTopicCollection::NotifyObservers
+// Notifies all registred observers about a topic collection contents change.
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CCbsDbImpTopicCollection::NotifyObservers()
+    {
+    // Notify each observer.
+    TInt count( iObservers->Count() );
+    for ( TInt index( 0 ); index < count; index++ )
+        {
+        iObservers->At( index )->TopicCollectionContentsChangedInd();
+        }
+    }
+
+// ========================== OTHER EXPORTED FUNCTIONS =========================
+
+//  End of File