OAIP_GetLongData

This function supports streaming for a particular column.The IP calls dam_addLOBLocatorValToRow to add the locator value. When the client requests data, the OpenAccess SDK SQL Engine invokes OAIP_GetLongData, which is exported from the IP.

int OAIP_GetLongData(
    DAM_HSTMT hstmt,
    void    * pLOBLocator,
    int        iXoType,
    int iOpType,
    void    * ioTargetValuePtr,
    long       iBufferLength,
    long    * oLenOrIndPtr)

Table 14. Parameters for OAIP_GetLongData
Parameter	Type	Description
IN
hstmt	DAM_HSTMT	Statement handle.
pLOBLocator	void *	LOB locator value, which is added in dam_addLOBLocatorValToRow.
iXoType	int	XOtype specified in dam_addLOBLocatorValToRow.
iOpType	int	Type of LOB Locator options. Valid values are: LOB_FIRST - get data from the beginning of the LOB LOB_NEXT - get the next buffers worth of data LOB_CLOSE - close the LOB. The IP should release any resources it is holding for the locator.
ioTargetValuePtr	void *	The Buffer location, into which the IP can populate data.
iBufferLength	long	The ioTargetValPtr Buffer length.
oLenOrIndPtr	long	The Length or Indicator pointer.
RETURN
	int	DAM_SUCCESS - on success DAM_SUCCESS_WITH_INFO - if LOB data was copied to the buffer and more data remains to be fetched for the LOB. The value returned in oLenOrIndPtr is the number of bytes of LOB data remaining. DAM_FAILURE - on failure

OAIP_GetLongData

See also