Class CMMFDataSourceHolder

class CMMFDataSourceHolder : public CMMFObject;

Description

CMMFObject-derived class to wrap a Data Source.

Allows a handle to be attributed to a data source, so it can be removed from the controller and the client can send messages directly to it.

Derivation

• CBase - Base class for all classes to be instantiated on the heap.

• CMMFObject - Defines an object to which a client may have a direct handle.

• CMMFDataSourceHolder - CMMFObject-derived class to wrap a Data Source.

Members

Defined in CMMFDataSourceHolder:

• CMMFDataSourceHolder(MDataSource &)Constructor.
• DataSource()Returns a reference to the data source.
• HandleRequest(TMMFMessage &)Implementation of the pure virtual function inherited from CMMFObject.
• ~CMMFDataSourceHolder()Destructor.

Inherited from CBase:

• Delete(CBase *)Deletes the specified object.
• Extension_(TUint,TAny *&,TAny *)Extension function
• operator new(TUint)Allocates the object from the heap and then initialises its contents to binary z...
• operator new(TUint,TAny *)Initialises the object to binary zeroes.
• operator new(TUint,TLeave)Allocates the object from the heap and then initialises its contents to binary z...
• operator new(TUint,TLeave,TUint)Allocates the object from the heap and then initialises its contents to binary z...
• operator new(TUint,TUint)Allocates the object from the heap and then initialises its contents to binary z...

Inherited from CMMFObject:

• CMMFObject(TUid)Constructor.
• Handle()Returns the handle of the object.
• operator==(const CMMFObject &)Compares two CMMFObjects by comparing their handles.

IMPORT_C CMMFDataSourceHolder(MDataSource &aDataSource);

Description

Constructor.

Parameters

MDataSource &aDataSource The data source to be wrapped.

IMPORT_C ~CMMFDataSourceHolder();

Description

Destructor.

Note: This deletes the data source.

IMPORT_C MDataSource& DataSource();

Description

Returns a reference to the data source.

Return value

MDataSource & The data source.

IMPORT_C virtual void HandleRequest(TMMFMessage &aMessage);

Description

Implementation of the pure virtual function inherited from CMMFObject.

Passes the request directly to the data source.

Parameters

TMMFMessage &aMessage The message to be handled.