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RDbColWriteStream Class Reference

class RDbColWriteStream : public RWriteStream

Writes Long columns when inserting or updating rows in a rowset.

Only one column in a rowset object can be opened for writing as a stream at a time.

Inherits from

RDbColWriteStream
- RWriteStream

Public Member Functions
	RDbColWriteStream ()
	RDbColWriteStream (const MExternalizer < TStreamRef > &)
IMPORT_C void	OpenL ( RDbRowSet &, TDbColNo )
IMPORT_C void	OpenLC ( RDbRowSet &, TDbColNo )

Inherited Functions
	RWriteStream::Attach(MStreamBuf *)
	RWriteStream::Close()
	RWriteStream::CommitL()
	RWriteStream::Detach()
	RWriteStream::Pop()
	RWriteStream::PushL()
	RWriteStream::RWriteStream()
	RWriteStream::RWriteStream(MStreamBuf *)
	RWriteStream::RWriteStream(const MExternalizer< TStreamRef > &)
	RWriteStream::Release()
	RWriteStream::Sink()
	RWriteStream::WriteInt16L(TInt)
	RWriteStream::WriteInt32L(TInt32)
	RWriteStream::WriteInt8L(TInt)
	RWriteStream::WriteL(RReadStream &)
	RWriteStream::WriteL(RReadStream &,TInt)
	RWriteStream::WriteL(const TDesC16 &)
	RWriteStream::WriteL(const TDesC16 &,TInt)
	RWriteStream::WriteL(const TDesC8 &)
	RWriteStream::WriteL(const TDesC8 &,TInt)
	RWriteStream::WriteL(const TUint16 *,TInt)
	RWriteStream::WriteL(const TUint8 *,TInt)
	RWriteStream::WriteReal32L(TReal)
	RWriteStream::WriteReal64L(TReal64)
	RWriteStream::WriteUint16L(TUint)
	RWriteStream::WriteUint32L(TUint32)
	RWriteStream::WriteUint8L(TUint)

Constructor & Destructor Documentation

RDbColWriteStream()

RDbColWriteStream

(

)

[inline]

Constructs this object by invoking the default constructor for RWriteStream .

RDbColWriteStream(const MExternalizer< TStreamRef > &)

RDbColWriteStream

(

const MExternalizer < TStreamRef > &

anExternalizer

)

[inline]

Constructs this object by invoking the matching constructor for RWriteStream .

Parameters

const MExternalizer < TStreamRef > & anExternalizer

Specifies an externaliser

Member Functions Documentation

OpenL(RDbRowSet &, TDbColNo)

IMPORT_C void	OpenL	(	RDbRowSet &	aView,
			TDbColNo	aCol
		)

Opens the column with the specified ordinal in the current row, and in the specified rowset, and prepares the column for being written or replaced. The rowset must be updating or inserting a row.

capability: Note For a secure shared database, the caller must satisfy the write access policy for the table.

Parameters

RDbRowSet & aView	The rowset which has the row and column to be written.
TDbColNo aCol	The column ordinal of the column to be written.

OpenLC(RDbRowSet &, TDbColNo)

IMPORT_C void	OpenLC	(	RDbRowSet &	aView,
			TDbColNo	aCol
		)

Opens the column with the specified ordinal in the current row, and in the specified rowset, and prepares the column for being written or replaced, putting a cleanup item for this object onto the cleanup stack. The rowset must be updating or inserting a row.

Placing the cleanup object on the cleanup stack allows allocated resources to be cleaned up if a subsequent leave occurs.

capability: Note For a secure shared database, the caller must satisfy the write access policy for the table.

Parameters

RDbRowSet & aView	The rowset which has the row and column to be written.
TDbColNo aCol	The column ordinal of the column to be written.