diff -r 608f67c22514 -r 896e9dbc5f19 internetradio2.0/irsessionlog/src/irsessiondb.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/internetradio2.0/irsessionlog/src/irsessiondb.cpp	Wed Aug 18 09:40:26 2010 +0300
@@ -0,0 +1,430 @@
+/*
+* 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:  The implementation for presentation elements.
+*
+*/
+
+
+#include <bautils.h>
+
+#include "irdebug.h" 
+#include "irsessiondb.h"
+#include "irsessionloggerutility.h"
+
+_LIT( KSessionTable, "Session" ); 
+_LIT( KID, "id" );
+_LIT( KSessionLogCol,  "SessionData" );
+_LIT( KSessionIndex, "SessionIndex" );
+
+const TInt KMaxNoSession = 15;
+
+
+// ---------------------------------------------------------------------------
+// Function : NewL()
+// two phased construction
+// ---------------------------------------------------------------------------
+//
+  CIRSessionDb* CIRSessionDb::NewL()
+    {
+    IRLOG_DEBUG( "CIRSessionDb::NewL" );
+    CIRSessionDb* self;
+    self = CIRSessionDb::NewLC();
+    CleanupStack::Pop( self );
+    IRLOG_DEBUG( "CIRSessionDb::NewL - Exiting." );
+    return self;
+    }
+
+// ---------------------------------------------------------------------------
+// Function : NewLC()
+// Two phased construction
+// ---------------------------------------------------------------------------
+//
+  CIRSessionDb* CIRSessionDb::NewLC()
+    {
+    IRLOG_DEBUG( "CIRSessionDb::NewLC" );
+    CIRSessionDb *self;
+    self = new( ELeave )CIRSessionDb;
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    IRLOG_DEBUG( "CIRSessionDb::NewLC - Exiting." );
+    return self;
+    }
+
+// ---------------------------------------------------------------------------
+// CIRSessionDb::~CIRSessionDb()
+// default destructor
+// ---------------------------------------------------------------------------
+//
+CIRSessionDb::~CIRSessionDb()
+    {
+    IRLOG_DEBUG( "CIRSessionDb::~CIRSessionDb" );
+    CloseDb();
+    iFsSession.Close();
+    IRLOG_DEBUG( "CIRSessionDb::~CIRSessionDb - Exiting." );
+    }
+
+// ---------------------------------------------------------------------------
+// CIRSessionDb::CreateDbConditional()
+// Creates both the dbms files conditionally( only if not yet created )
+// calls CreateDbL()
+// ---------------------------------------------------------------------------
+//
+ TInt CIRSessionDb::CreateDbConditional( TFileName &aSession )
+    {
+    IRLOG_DEBUG( "CIRSessionDb::CreateDbConditional" );
+    iDbFile.Copy( aSession );
+    if ( !BaflUtils::FileExists( iFsSession, iDbFile ) )
+        {
+        TRAPD( error, CreateDbL( iDbFile ) );
+        if ( error )
+            {
+            IRLOG_DEBUG( "CIRSessionDb::CreateDbConditional - Exiting ( 1 )." );
+            return error;
+            }    
+        }
+    IRLOG_DEBUG( "CIRSessionDb::CreateDbConditional - Exiting ( 2 )." );
+    return KErrNone;
+    }
+
+// ---------------------------------------------------------------------------
+// CIRSessionDb:AddSessionStartL()
+// adds the session log entry into data base
+// ---------------------------------------------------------------------------
+//
+void CIRSessionDb::AddSessionStartL( CIRSessionLogger& aSession )
+    {
+    IRLOG_DEBUG( "CIRSessionDb::AddSessionStartL" );
+    OpenDbL();
+    RDbTable sessionlogtable;
+    TInt error=sessionlogtable.Open( iSessionDb, KSessionTable, sessionlogtable.
+        EUpdatable );
+    CleanupClosePushL( sessionlogtable );
+    if ( error )
+        {
+        CloseDb();
+        User::LeaveIfError( error );    
+        }
+    
+    //! arrange the presets in incresing order of index
+    sessionlogtable.SetIndex( KSessionIndex );
+    sessionlogtable.Reset();
+
+    //if session log is greater or equal to than 5
+    if ( sessionlogtable.CountL() >= KMaxNoSession )
+        {
+        //first row is selected
+        sessionlogtable.FirstL();
+        //the current row is selected
+        sessionlogtable.GetL();
+        //delete that entry
+        sessionlogtable.DeleteL();
+        }    
+    CleanupStack::PopAndDestroy( &sessionlogtable );
+    //Algorithm : else condition need not handle seperatly
+    //Algorithm : add sessionid and informations like
+    //starttime,connectedfrom,sessionid,connectiontype,channelid
+    //currentnetwork,homenetwork,sessiontable 
+    //Algorithm: if no. of session is greater than 5
+
+    _LIT( query, "SELECT * FROM %S" );    
+    HBufC* sqlStr = HBufC::NewLC( query().Length() + KSessionTable().Length() );
+    sqlStr->Des().Format( query, &KSessionTable );
+    
+    // Create a view on the database
+    RDbView view;     
+    error = view.Prepare( iSessionDb, *sqlStr );
+    if ( error )
+        {
+        CloseDb();
+        User::LeaveIfError( error );    
+        }
+    CleanupStack::PopAndDestroy( sqlStr );     
+    CleanupClosePushL( view );
+    error = view.EvaluateAll();
+    if ( error )
+        {
+        CloseDb();
+        User::LeaveIfError( error );    
+        }
+    CDbColSet* columns = view.ColSetL();
+    CleanupStack::PushL( columns );
+    
+    RDbColWriteStream writeStream;
+    TRAP( error, //trap start
+       // Insert a row. Column order matches sql select statement
+        view.InsertL();
+        //get index
+        view.SetColL( columns->ColNo( KID ), aSession.SessionId() );    
+        //!open stream
+        writeStream.OpenLC( view, columns->ColNo( KSessionLogCol ) );
+        aSession.ExternalizeL( writeStream );
+        writeStream.CommitL();
+        CleanupStack::PopAndDestroy( &writeStream );
+         );
+         
+    CleanupStack::PopAndDestroy( columns );
+    if ( error != KErrNone )
+        {
+        CloseDb();
+        User::LeaveIfError( error );
+        }
+    view.PutL();
+    CleanupStack::PopAndDestroy( &view );
+    CloseDb();
+    IRLOG_DEBUG( "CIRSessionDb::AddSessionStartL - Exiting." );
+    }
+
+// ---------------------------------------------------------------------------
+// CIRSessionDb::GetAllPresetL()
+// gets all the preset into an array 
+// ---------------------------------------------------------------------------
+//
+void CIRSessionDb::GetAllSessionL(
+    CArrayPtrFlat<CIRSessionLogger>& aSessionDataList )
+    {
+    IRLOG_DEBUG( "CIRSessionDb::GetAllSessionL" );
+    OpenDbL();
+    //not sure about this resetanddestroy
+     //! Open for preset master
+    aSessionDataList.ResetAndDestroy();        
+    //! temp item for holding the retrived data
+    CIRSessionLogger *item;
+    RDbColReadStream instream;    
+    RDbTable table;
+    TInt error = table.Open( iSessionDb, KSessionTable, table.EReadOnly );
+    CleanupClosePushL( table );
+    if ( error != KErrNone )
+         {
+         //if open fails function leaves
+         CloseDb();
+         User::LeaveIfError( error );
+         }
+
+    CDbColSet* colSet = table.ColSetL();
+    CleanupStack::PushL( colSet );
+
+    //! arrange the presets in incresing order of index
+    table.SetIndex( KSessionIndex );
+    table.Reset();
+    //! recursively retrive the preset data from the master table
+    for ( table.FirstL(); table.AtRow(); table.NextL() )
+        {
+        item = CIRSessionLogger::NewL();
+        CleanupStack::PushL( item );
+        table.GetL();
+        instream.OpenLC( table, colSet->ColNo( KSessionLogCol ) );
+        item->InternalizeL( instream );
+        //update sessionid
+        aSessionDataList.AppendL( item );
+        CleanupStack::PopAndDestroy( &instream );
+        CleanupStack::Pop( item );
+        }
+        
+    CleanupStack::PopAndDestroy( colSet );
+    //!close the master table
+    CleanupStack::PopAndDestroy( &table );
+    CloseDb();
+    IRLOG_DEBUG( "CIRSessionDb::GetAllSessionL - Exiting." );
+    }
+
+// ---------------------------------------------------------------------------
+// Function : DeleteAllSession
+// delete all the session from session log entry
+// ---------------------------------------------------------------------------
+//
+void CIRSessionDb::DeleteAllSessionL()
+    { 
+    IRLOG_DEBUG( "CIRSessionDb::DeleteAllSessionL" ); 
+    //opening a data base 
+    OpenDbL();
+    RDbTable sessionlogtable;
+    //data base table opened
+    TInt error = sessionlogtable.Open( iSessionDb, KSessionTable, sessionlogtable.
+        EUpdatable );
+    CleanupClosePushL( sessionlogtable );
+    if ( error != KErrNone )
+         {
+         //if error we leave
+         CloseDb();
+         User::LeaveIfError( error );
+         }
+    //data base begin     
+    error = iSessionDb.Begin();
+    if ( error != KErrNone )
+         {
+         //if open fails function leaves
+         CloseDb();
+         User::LeaveIfError( error );
+         }
+
+    //! arrange the presets in incresing order of index
+    sessionlogtable.SetIndex( KSessionIndex );
+    sessionlogtable.Reset();
+    sessionlogtable.FirstL();
+    while( sessionlogtable.AtRow() )
+        {
+        //deleting all the rows in the table
+        sessionlogtable.GetL();
+        sessionlogtable.DeleteL();
+        sessionlogtable.FirstL();
+        }
+    //saving the change
+    CleanupStack::PopAndDestroy( &sessionlogtable );
+    iSessionDb.Commit();
+    CloseDb();    
+    IRLOG_DEBUG( "CIRSessionDb::DeleteAllSessionL - Exiting." );
+    }   
+
+// ---------------------------------------------------------------------------
+// CIRSessionDb::ConstructL()
+// Standard 2nd phase construction
+// ---------------------------------------------------------------------------
+//
+void CIRSessionDb::ConstructL()
+    {
+    IRLOG_DEBUG( "CIRSessionDb::ConstructL" );
+    User::LeaveIfError( iFsSession.Connect() );
+    IRLOG_DEBUG( "CIRSessionDb::ConstructL- Exiting." );    
+    }
+
+// ---------------------------------------------------------------------------
+// CIRSessionDb::CloseDb()
+// Closes the database 
+// ---------------------------------------------------------------------------
+//
+void CIRSessionDb::CloseDb()
+    {
+    IRLOG_DEBUG( "CIRSessionDb::CloseDb" );
+    iSessionDb.Close();
+    IRLOG_DEBUG( "CIRSessionDb::CloseDb - Exiting." );
+    }
+
+// ---------------------------------------------------------------------------
+// Function : CreateSessionTableL
+// creates sessionlogtable with two column one is sessionid and rest of session
+// log data
+// ---------------------------------------------------------------------------
+//SessionTable
+//---------------------------
+//| KID   |     KSessionLogCol |
+//---------------------------
+//|TInt32 | EDbColLongText8 |
+//---------------------------
+//
+void CIRSessionDb::CreateSessionTableL()
+    {
+    IRLOG_DEBUG( "CIRSessionDb::CreateSessionTableL" );
+    //start time of session
+    TDbCol sessionid( KID, EDbColInt32 );
+    sessionid.iAttributes = TDbCol::ENotNull; 
+    
+    //!this column is used to store preset data
+    //!The column stores a potentially large amount of non-Unicode text data.
+    TDbCol sessionlogcol( KSessionLogCol, EDbColLongText8 );
+       sessionlogcol.iAttributes = TDbCol::ENotNull; 
+       
+    CDbColSet* sessionlogcolset = CDbColSet::NewLC();
+    sessionlogcolset->AddL( sessionid );
+    sessionlogcolset->AddL( sessionlogcol );
+
+    // Create the sessionlog table with two columns
+    
+    User::LeaveIfError( iSessionDb.CreateTable( KSessionTable,
+         *sessionlogcolset ) );
+    
+    //Create the KeyIndex for the table
+    CreateSessionIndexL();
+    CleanupStack::PopAndDestroy( sessionlogcolset );
+    IRLOG_DEBUG( "CIRSessionDb::CreateSessionTableL - Exiting." );    
+    }
+
+// ---------------------------------------------------------------------------
+// Function : CreateSessionIndexL
+// sets sessionid as the primary key
+// ---------------------------------------------------------------------------
+//
+void CIRSessionDb::CreateSessionIndexL()
+    {
+    IRLOG_DEBUG( "CIRSessionDb::CreateSessionIndexL" );
+    TDbKeyCol sessionid( KID );
+    CDbKey* index = CDbKey::NewLC();
+    index->AddL( sessionid );
+    User::LeaveIfError( iSessionDb.CreateIndex( KSessionIndex, KSessionTable,
+        *index ) );
+    CleanupStack::PopAndDestroy( index );
+    IRLOG_DEBUG( "CIRSessionDb::CreateSessionIndexL - Exiting." );
+    }
+    
+// ---------------------------------------------------------------------------
+// CIRSessionDb::OpenDbL()
+// opening the data base 
+// ---------------------------------------------------------------------------
+//
+ void CIRSessionDb::OpenDbL()
+    {
+    IRLOG_DEBUG( "CIRSessionDb::OpenDbL" );
+    CloseDb();
+    TInt error = KErrNone;
+    if ( !BaflUtils::FileExists( iFsSession, iDbFile ) )
+        {
+        //if file doesn't exist function leaves with error code
+        //KErrNotFound
+        error = KErrNotFound;
+        User::LeaveIfError( error );
+        }
+
+    error = iSessionDb.Open( iFsSession, iDbFile );    
+    if ( error != KErrNone )
+        {
+        //if database is failed to open then 
+        //function leaves
+        IRLOG_ERROR2( "CIRSessionDb::OpenDbL - Opening session database failed ( %d )", error );
+        User::LeaveIfError( error );
+        }
+    if ( iSessionDb.IsDamaged() || !iSessionDb.InTransaction() )
+        {
+        //if data base is damaged then 
+        //it tried to recover
+        //if recovery is not possible function leaves
+        error = iSessionDb.Recover();
+        if ( KErrNone == error )
+            {
+            //if recovered data base is compacted
+            error = iSessionDb.Compact();    
+            }
+        User::LeaveIfError( error );    
+        }
+    IRLOG_DEBUG( "CIRSessionDb::OpenDbL - Exiting." );
+    }
+
+// ---------------------------------------------------------------------------
+// CIRSessionDb::CreateDbL()
+// Creates both the dbms files 
+// calls CreateFavMasterTableL(),CreateFavUrlTableL
+// database filename
+// ---------------------------------------------------------------------------
+//
+ void CIRSessionDb::CreateDbL( TFileName& aSession )
+    {
+    IRLOG_DEBUG( "CIRSessionDb::CreateDbL" );
+    CloseDb();
+    TInt error = iSessionDb.Replace( iFsSession, aSession );
+    if ( error != KErrNone )
+        {
+        IRLOG_ERROR2( "CIRSessionDb::CreateDbL - Creating session database failed ( %d )", error );
+        }
+    User::LeaveIfError( error );
+    CreateSessionTableL();
+    IRLOG_DEBUG( "CIRSessionDb::CreateDbL - Exiting." );
+    }