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CSensrvTransactionQueue Class Reference

class CSensrvTransactionQueue : public CBase

Simple to use transaction queue.

Since: S60 5.0

Inherits from

CSensrvTransactionQueue
- CBase

Nested Classes and Structures

CSensrvTransactionQueue::TLinkableTransactionPtr

Public Member Functions
	~CSensrvTransactionQueue()
TInt	Add(CSensrvTransaction *, TBool)
CSensrvTransaction *	First()
TBool	IsEmpty()
CSensrvTransactionQueue *	NewL(TBool)
void	Remove(CSensrvTransaction *, TRemovalType)
void	Remove(CSensrvSession *)
void	RemoveAll()
TInt	RemoveObsolete(const TTime &)

Private Member Functions
	CSensrvTransactionQueue(TBool)
void	ConstructL()
TLinkableTransactionPtr *	FindTransactionPtr(CSensrvTransaction *)
void	RemovePtr(TLinkableTransactionPtr *, TRemovalType)

Inherited Functions
	CBase::CBase()
	CBase::Delete(CBase *)
	CBase::Extension_(TUint,TAny &,TAny )
	CBase::operator new(TUint)
	CBase::operator new(TUint,TAny *)
	CBase::operator new(TUint,TLeave)
	CBase::operator new(TUint,TLeave,TUint)
	CBase::operator new(TUint,TUint)
	CBase::~CBase()

Public Member Enumerations
enum	TRemovalType { ERemovalTypeUndefined, ERemovalTypeComplete, ERemovalTypeCancel, ERemovalTypeTransfer }

Private Attributes
RHeap *	iHeap
TBool	iOwned
TSglQueIter< TLinkableTransactionPtr >	iTransactionPtrIter
TSglQue< TLinkableTransactionPtr >	iTransactionPtrList

Constructor & Destructor Documentation

CSensrvTransactionQueue(TBool)

CSensrvTransactionQueue

(

TBool

aOwned

)

[private]

C++ constructor

Since: S60 5.0

Parameters

TBool aOwned

~CSensrvTransactionQueue()

~CSensrvTransactionQueue

(

)

[virtual]

Destructor.

Member Functions Documentation

Add(CSensrvTransaction *, TBool)

TInt	Add	(	CSensrvTransaction *	aTransaction,
			TBool	aLast = ETrue
		)

Adds transaction to the the queue

Since: S60 5.0

Parameters

CSensrvTransaction * aTransaction	The transaction to be added.
TBool aLast = ETrue	If ETrue, transaction is added to the end of the queue, otherwise it is added to the beginning.

ConstructL()

void

ConstructL

(

)

[private]

2nd phase of construction

Since: S60 5.0

FindTransactionPtr(CSensrvTransaction *)

TLinkableTransactionPtr *

FindTransactionPtr

(

CSensrvTransaction *

aTransaction

)

[private]

Gets pointer to the TLinkableTransactionPtr in queue corresponding to specified transaction. Transaction stays in the queue.

Since: S60 5.0

Parameters

CSensrvTransaction * aTransaction

The transaction to be found.

First()

CSensrvTransaction *

First

(

)

Gets pointer to first transaction in queue. Transaction stays in the queue.

Since: S60 5.0

IsEmpty()

TBool

IsEmpty

(

)

[inline]

Checks if queue is empty

Since: S60 5.0

NewL(TBool)

CSensrvTransactionQueue *

NewL

(

TBool

aOwned

)

[static]

Two phase constructor.

Since: S60 5.0

Exceptions

KErrNoMemory

Out of memory.

Parameters

TBool aOwned

Indicates if queue owns transactions or is it used simply to store the pointers. If transactions are owned, deleting queue will also delete all transactions.

Remove(CSensrvTransaction *, TRemovalType)

void	Remove	(	CSensrvTransaction *	aTransaction,
			TRemovalType	aRemovalType = ERemovalTypeUndefined
		)

Removes specified transaction from queue, if it is there. If queue owns the transactions, the removed transaction may be completed and deleted, depending on removal type.

Since: S60 5.0

TRemovalType

Parameters

CSensrvTransaction * aTransaction	The transaction to be removed.
TRemovalType aRemovalType = ERemovalTypeUndefined	Determines removal type.

Remove(CSensrvSession *)

void

Remove

(

CSensrvSession *

aSession

)

Removes all transactions initiated by specified session from queue. If queue owns the transactions, the transactions are completed with KErrCancel and are deleted. Otherwise does not delete or complete transactions.

Since: S60 5.0

Parameters

CSensrvSession * aSession

The session to match.

RemoveAll()

void

RemoveAll

(

)

Removes all transactions.

Since: S60 5.0

RemoveObsolete(const TTime &)

TInt

RemoveObsolete

(

const TTime &

aCutoffTime

)

Removes all transactions with timestamp older than specified cutoff time.

Since: S60 5.0

Parameters

const TTime & aCutoffTime

Transactions older that this time will be removed.

RemovePtr(TLinkableTransactionPtr *, TRemovalType)

void	RemovePtr	(	TLinkableTransactionPtr *	aPtr,
			TRemovalType	aRemovalType
		)	[private]

Removes linkable transaction pointer and deletes it. If transactions are owned, they are completed with KErrCancel or whatever error code they currently have.

Since: S60 5.0

TRemovalType

Parameters

TLinkableTransactionPtr * aPtr	Linkable transaction pointer to remove
TRemovalType aRemovalType	Determines removal type.

Member Enumerations Documentation

Enum TRemovalType

Removal type specifies what should be done to removed transaction.

Enumerators

ERemovalTypeUndefined
ERemovalTypeComplete
ERemovalTypeCancel
ERemovalTypeTransfer

Member Data Documentation

RHeap * iHeap

RHeap *

iHeap

[private]

Heap where the queue resides. Transactions must reside in the same heap. Not own.

TBool iOwned

TBool

iOwned

[private]

Indicates whether or not this queue owns the transactions it holds.

TSglQueIter< TLinkableTransactionPtr > iTransactionPtrIter

TSglQueIter< TLinkableTransactionPtr >

iTransactionPtrIter

[private]

Iterator for transaction queue

TSglQue< TLinkableTransactionPtr > iTransactionPtrList

TSglQue< TLinkableTransactionPtr >

iTransactionPtrList

[private]

Holds transaction pointers of transactions. Queued pointer objects are owned.