commonappservices/alarmserver/Server/Source/ASSrvDataPool.cpp
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     1 // Copyright (c) 1999-2009 Nokia Corporation and/or its subsidiary(-ies).
       
     2 // All rights reserved.
       
     3 // This component and the accompanying materials are made available
       
     4 // under the terms of "Eclipse Public License v1.0"
       
     5 // which accompanies this distribution, and is available
       
     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     7 //
       
     8 // Initial Contributors:
       
     9 // Nokia Corporation - initial contribution.
       
    10 //
       
    11 // Contributors:
       
    12 //
       
    13 // Description:
       
    14 //
       
    15 
       
    16 #include "ASSrvDataPool.h"
       
    17 
       
    18 // System includes
       
    19 
       
    20 // User includes
       
    21 #include "ASSrvAlarmQueue.h"
       
    22 #include "ASSrvStaticUtils.h"
       
    23 #include "ASSrvServerWideData.h"
       
    24 
       
    25 // Type definitions
       
    26 
       
    27 // Constants
       
    28 
       
    29 // Enumerations
       
    30 
       
    31 // Classes referenced
       
    32 
       
    33 
       
    34 
       
    35 
       
    36 
       
    37 
       
    38 //
       
    39 // ----> CASSrvAlarmDataMapplet (header)
       
    40 //
       
    41 
       
    42 //*************************************************************************************
       
    43 CASSrvDataPool::CASSrvAlarmDataMapplet::CASSrvAlarmDataMapplet(TAlarmId aAlarmId, HBufC8* aAlarmData)
       
    44 :	iAlarmId(aAlarmId), iAlarmData(aAlarmData)
       
    45 	{
       
    46 	}
       
    47 
       
    48 
       
    49 //*************************************************************************************
       
    50 CASSrvDataPool::CASSrvAlarmDataMapplet::~CASSrvAlarmDataMapplet()
       
    51 	{
       
    52 	delete iAlarmData;
       
    53 	}
       
    54 
       
    55 
       
    56 //*************************************************************************************
       
    57 CASSrvDataPool::CASSrvAlarmDataMapplet* CASSrvDataPool::CASSrvAlarmDataMapplet::NewLC(TAlarmId aAlarmId, HBufC8* aAlarmData)
       
    58 	{
       
    59 	__ASSERT_ALWAYS(aAlarmData, ASSrvStaticUtils::Fault(ASSrvStaticUtils::EASSrvFaultNoData));
       
    60 	//
       
    61 	CleanupStack::PushL(aAlarmData);
       
    62 	CASSrvAlarmDataMapplet* self = new(ELeave) CASSrvAlarmDataMapplet(aAlarmId, aAlarmData);
       
    63 	CleanupStack::Pop(aAlarmData);
       
    64 	CleanupStack::PushL(self);
       
    65 	return self;
       
    66 	}
       
    67 
       
    68 
       
    69 
       
    70 
       
    71 
       
    72 
       
    73 
       
    74 
       
    75 
       
    76 
       
    77 
       
    78 //
       
    79 // ----> CASSrvDataPool (source)
       
    80 //
       
    81 
       
    82 //*************************************************************************************
       
    83 CASSrvDataPool::CASSrvDataPool(CASSrvServerWideData& aServerWideData)
       
    84 :	iServerWideData(aServerWideData)
       
    85 	{
       
    86 	}
       
    87 
       
    88 
       
    89 //*************************************************************************************
       
    90 CASSrvDataPool::~CASSrvDataPool()
       
    91 	{
       
    92 	iDataEntries.ResetAndDestroy();
       
    93 	iDataEntries.Close();
       
    94 	if(iInternalizeDataEntries.Count() != 0)
       
    95 		iInternalizeDataEntries.ResetAndDestroy();
       
    96 	iInternalizeDataEntries.Close();
       
    97 	ServerData().Queue().NotificationPoolChangeCancel(*this);
       
    98 	}
       
    99 
       
   100 
       
   101 //*************************************************************************************
       
   102 void CASSrvDataPool::ConstructL()
       
   103 	{
       
   104 	ServerData().Queue().NotificationPoolChangeL(*this);
       
   105 	}
       
   106 
       
   107 
       
   108 //*************************************************************************************
       
   109 CASSrvDataPool* CASSrvDataPool::NewL(CASSrvServerWideData& aServerWideData)
       
   110 	{
       
   111 	CASSrvDataPool* self = new(ELeave) CASSrvDataPool(aServerWideData);
       
   112 	CleanupStack::PushL(self);
       
   113 	self->ConstructL();
       
   114 	CleanupStack::Pop(self);
       
   115 	return self;
       
   116 	}
       
   117 
       
   118 
       
   119 //
       
   120 //
       
   121 //
       
   122 
       
   123 
       
   124 //*************************************************************************************
       
   125 /**
       
   126  * Does the specified alarm have any associated arbitrary data?
       
   127  */
       
   128 TBool CASSrvDataPool::DataPoolContainsEntry(TAlarmId aAlarmId) const
       
   129 	{
       
   130 	return (FindEntry(aAlarmId) != KErrNotFound);
       
   131 	}
       
   132 
       
   133 
       
   134 //*************************************************************************************
       
   135 /**
       
   136  * Return the associated arbitrary data for the specified alarm.
       
   137  */
       
   138 const TDesC8& CASSrvDataPool::DataPoolEntry(TAlarmId aAlarmId) const
       
   139 	{
       
   140 	const TInt index = FindEntry(aAlarmId);
       
   141 	__ASSERT_ALWAYS(index >= 0, ASSrvStaticUtils::Fault(ASSrvStaticUtils::EASSrvFaultAlarmDataEntryNotFound));
       
   142 	return iDataEntries[index]->Data();
       
   143 	}
       
   144 
       
   145 
       
   146 //*************************************************************************************
       
   147 /**
       
   148  * Add a new data mapping to the pool. 
       
   149  */
       
   150 void CASSrvDataPool::DataPoolAddDataL(TAlarmId aAlarmId, HBufC8* aData)
       
   151 	{
       
   152 	CleanupStack::PushL(aData);
       
   153 	const TInt index = FindEntry(aAlarmId);
       
   154 	if	(index < KErrNone)
       
   155 		{
       
   156 		CleanupStack::Pop(aData);
       
   157 		CASSrvAlarmDataMapplet* mapplet = CASSrvAlarmDataMapplet::NewLC(aAlarmId, aData);
       
   158 		User::LeaveIfError(iDataEntries.Append(mapplet));
       
   159 		CleanupStack::Pop(mapplet);
       
   160 		ServerData().AnyEventManager().MASAnyEventManagerObserverNotifyChanges(EAlarmChangeEventAlarmData, aAlarmId);
       
   161 		}
       
   162 	else
       
   163 		User::Leave(KErrInUse);
       
   164 	}
       
   165 
       
   166 
       
   167 //*************************************************************************************
       
   168 /**
       
   169  * Release the data associated with the specified entry
       
   170  */
       
   171 void CASSrvDataPool::DataPoolRemoveDataL(TAlarmId aAlarmId)
       
   172 	{
       
   173 	const TInt index = FindEntry(aAlarmId);
       
   174 	if	(index < KErrNone)
       
   175 		User::Leave(index);
       
   176 	//
       
   177 	delete iDataEntries[index];
       
   178 	iDataEntries.Remove(index);
       
   179 	//
       
   180 	ServerData().AnyEventManager().MASAnyEventManagerObserverNotifyChanges(EAlarmChangeEventAlarmData, aAlarmId);
       
   181 	}
       
   182 
       
   183 
       
   184 //
       
   185 //
       
   186 //
       
   187 
       
   188 
       
   189 //*************************************************************************************
       
   190 /**
       
   191  * Internalize the contents of the datapool from a stream
       
   192  */
       
   193 void CASSrvDataPool::InternalizeL(RReadStream& aStream)
       
   194 	{
       
   195 	const TInt count = aStream.ReadInt32L();
       
   196 	if(iInternalizeDataEntries.Count() != 0)
       
   197 		iInternalizeDataEntries.ResetAndDestroy();
       
   198 	//
       
   199 	for(TInt i=0; i<count; i++)
       
   200 		{
       
   201 		const TAlarmId id = aStream.ReadInt32L();
       
   202 		HBufC8* data = HBufC8::NewLC(aStream, KMaxTInt);
       
   203 		//
       
   204 		CASSrvAlarmDataMapplet* mapplet = CASSrvAlarmDataMapplet::NewLC(id, data);
       
   205 		CleanupStack::Pop(2, data);
       
   206 		CleanupStack::PushL(mapplet);
       
   207 		//
       
   208 		User::LeaveIfError(iInternalizeDataEntries.Append(mapplet));
       
   209 		CleanupStack::Pop(mapplet);
       
   210 		}
       
   211 	}
       
   212 
       
   213 
       
   214 //*************************************************************************************
       
   215 /**
       
   216  * Externalize the contents of the datapool to a stream
       
   217  */
       
   218 void CASSrvDataPool::ExternalizeL(RWriteStream& aStream) const
       
   219 	{
       
   220 	const TInt count = iDataEntries.Count();
       
   221 	aStream.WriteInt32L(count);
       
   222 	//
       
   223 	for(TInt i=0; i<count; i++)
       
   224 		{
       
   225 		const CASSrvAlarmDataMapplet& mapplet = *iDataEntries[i];
       
   226 		aStream.WriteInt32L(mapplet.Id());
       
   227 		aStream << mapplet.Data();
       
   228 		}
       
   229 	}
       
   230 
       
   231 
       
   232 //*************************************************************************************
       
   233 /**
       
   234  * Whether to use the Internalize buffer, or throw it away
       
   235  */
       
   236 void CASSrvDataPool::ApplyInternalizedData(TBool aUseNewData)
       
   237 	{
       
   238 	if (aUseNewData)
       
   239 		{
       
   240 		// Internalize Success
       
   241 
       
   242 		// free old entries
       
   243 		iDataEntries.ResetAndDestroy();
       
   244 
       
   245 		// new data pool entries
       
   246 		iDataEntries = iInternalizeDataEntries;
       
   247 
       
   248 		// re-initialise source pointer array, by re-running its constructor
       
   249 		new(&iInternalizeDataEntries) RPointerArray<CASSrvAlarmDataMapplet>;
       
   250 		}
       
   251 	else 
       
   252 		{
       
   253 		// Internalize Failure
       
   254 		iInternalizeDataEntries.ResetAndDestroy();
       
   255 		}
       
   256 	}
       
   257 
       
   258 
       
   259 //
       
   260 //
       
   261 //
       
   262 
       
   263 
       
   264 //*************************************************************************************
       
   265 /**
       
   266  * @see MASSrvAlarmQueueObserver
       
   267  */
       
   268 void CASSrvDataPool::MAlarmQueueObserverHandleEvent(TASSrvAlarmQueueEvent aEvent, TAlarmId aAlarmId)
       
   269 	{
       
   270 	// If an alarm is deleted, then we must also remove any associated 
       
   271 	// arbitrary data.
       
   272 	if	(aEvent == EASSrvAlarmQueueEventAlarmDeleted && DataPoolContainsEntry(aAlarmId))
       
   273 		{
       
   274 		TRAP_IGNORE(DataPoolRemoveDataL(aAlarmId));
       
   275 		}
       
   276 	}
       
   277 
       
   278 
       
   279 //
       
   280 //
       
   281 //
       
   282 
       
   283 
       
   284 //*************************************************************************************
       
   285 /**
       
   286  * Find a specific data pool entry based upon an alarm id
       
   287  */
       
   288 TInt CASSrvDataPool::FindEntry(TAlarmId aAlarmId) const
       
   289 	{
       
   290 	const TInt count = iDataEntries.Count();
       
   291 	for(TInt i=0; i<count; i++)
       
   292 		{
       
   293 		if	(iDataEntries[i]->Id() == aAlarmId)
       
   294 			return i;
       
   295 		}
       
   296 	return KErrNotFound;
       
   297 	}
       
   298