Class TStreamId

TStreamId

Support

Supported from 5.0

Description

Provides unique identification for stream within a store.

A store always assigns a new id and constructs and returns an associated TStreamId object when a new stream is created.

Defined in TStreamId:
ExternalizeL(), InternalizeL(), TStreamId(), operator!=(), operator==()

See also:

• RStoreWriteStream::CreateL()
• RStoreWriteStream::CreateLC()

TStreamId();

Description

Constructs an uninitialised object. It is necessary because there are also non-default constructors in this class.

void ExternalizeL(RWriteStream& aStream) const;

Description

Externalises an object of this class to a write stream.

The presence of this function means that the standard templated operator<<() can be used to externalise objects of this class.

Parameters

RWriteStream& aStream Stream to which the object should be externalised.

void InternalizeL(RReadStream& aStream);

Description

Internalises an object of this class from a read stream.

The presence of this function means that the standard templated operator>>() can be used to internalise objects of this class.

Note that the function has assignment semantics. It replaces the old value of the object with a new value read from the read stream.

Parameters

RReadStream& aStream Stream from which the object should be internalised.

TBool operator==(TStreamId anId) const;

Description

Equality comparison operator. Use this operator to determine whether this stream id is equal to the specified stream id.

Parameters

TStreamId anId The stream id to be compared with this stream id.

Return value

TBool True, if the stream ids are equal; false otherwise

TBool operator!=(TStreamId anId) const;

Description

Inequality comparison operator. Use this operator to determine whether this stream id is unequal to the specified stream id.

Parameters

TStreamId anId The stream id to be compared with this stream id.

Return value

TBool True, if the two stream ids are unequal, false otherwise.