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Interface Provider class : IP methods reference : ipGetLongData
 

ipGetLongData

This function support 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.
If the IP specifies that the type of stream is CHAR, the OpenAccess SDK SQL Engine uses following syntax in the IP:
int ipGetLongData(
int64 dam_hstmt,
Object locator,
int iXOType,
int iOpType,
char() Buffer,
long IBufferLen,
int64 piLenOrInd)
If the IP specifies that the type of stream is binary, the OpenAccess SDK SQL Engine uses following syntax in the IP:
int ipGetLongData(
int64 dam_hstmt,
Object locator,
int iXOType,
int iOpType,
byte() Buffer,
long IBufferLen,
int64 piLenOrInd)
 
Table 14: Parameters for ipGetLongData  
Parameter
Type
Description
IN
 
 
hstmt
int64
Statement handle.
locator
Object
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, LOB_NEXT, and LOB_CLOSE.
Buffer
char()
byte()
The Buffer location, into which the IP can populate data.
IBufferLen
long
The ioTargetValPtr buffer length.
OUT
 
 
piLenOrInd
int64
The Length or Indicator pointer.
RETURN
 
 
 
int
DAM_SUCCESS – on success
DAM_SUCCESS_WITH_INFO - if LOB data was copied to the buffer and there is more data to fetch for the LOB.
DAM_FAILURE – on failure

See also 

• dam_addLOBLocatorValToRow