Class CCHFDiscoveryService

class CCHFDiscoveryService : public CBase, public MCHFDiscoveryService;

Description

The interface for the CHF discovery service.

This service is used to create CCHFContentHandlers and CCHFDataSuppliers. The interface uses a hook, MCHFDiscoveryService, that should be provided by the application to filter any requests before ECom is used to discovery an appropriate handler.

Derivation

• MCHFDiscoveryService - Base interface used for the CHF discovery service.
• CBase - Base class for all classes to be instantiated on the heap.

• CCHFDiscoveryService - The interface for the CHF discovery service.

Members

Defined in CCHFDiscoveryService:

• AddProxySessionObjectL(CCHFProxySessionObject *)Add a proxy session object. These are used to encapsulate a shared object that m...
• ContentHandlerL(const TCHFContentHandlerParams &)Finds a content handler for a given data supplier.
• DataSupplierL(const TDesC8 &,TUint)Finds a data supplier for a given URI.
• ProxySessionObject(const TUid &,CCHFProxySessionObject *&)constGets a proxy session object.

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...

virtual CCHFDataSupplier* DataSupplierL(const TDesC8 &aUri, TUint aBufferSizeInBytes);

Description

Finds a data supplier for a given URI.

Parameters

const TDesC8 &aUri TUint aBufferSizeInBytes

Return value

CCHFDataSupplier *

See also:

• MCHFDiscoveryService::DataSupplierL(const TDesC8 &,TUint)Finds a data supplier for a given URI.

virtual CCHFContentHandler* ContentHandlerL(const TCHFContentHandlerParams &aContentHandlerParams);

Description

Finds a content handler for a given data supplier.

Parameters

const TCHFContentHandlerParams &aContentHandlerParams Structure containing the required parameters for a Content Handler

Return value

CCHFContentHandler *

See also:

• MCHFDiscoveryService::ContentHandlerL(const TCHFContentHandlerParams &)Finds a content handler based on the Content Type part of passed in parameters.

IMPORT_C void AddProxySessionObjectL(CCHFProxySessionObject *aObject);

Description

Add a proxy session object. These are used to encapsulate a shared object that may be used by multiple data suppliers or content handlers.

Parameters

CCHFProxySessionObject *aObject A shared object to store

Leave codes

KErrNoMemory if no memory could be allocated to store the object. KErrCHFProxyObjectAlreadyExists if an object with the same identifier already exists

IMPORT_C TInt ProxySessionObject(const TUid &aProxyObjectIdentifier, CCHFProxySessionObject *&aProxyObject) const;

Description

Gets a proxy session object.

Parameters

const TUid &aProxyObjectIdentifier A UID that identifies the object being requested CCHFProxySessionObject *&aProxyObject The object requested

Return value

TInt An error code. KErrNotFound if the object doesn't exist.