Oracle C++ Call Interface Programmer's Guide

LOB Classes and Methods
blob.closeStream(instream);
}
}
stmt->closeResultSet(rset);
Streamed Write
The following code example demonstrates how to write data to an internal LOB (in
this example, a BLOB) that is already populated by using a streamed write:
ResultSet *rset=stmt->executeQuery("SELECT ad_composite FROM print_media
WHERE product_id=6666 FOR UPDATE");
while(rset->next())
{
Blob blob=rset->getBlob(1);
if(blob.isNull())
cerr commit();
Improving Read and Write Performance
Read and write performance of internal LOBs can be improved by using either of
the following methods:
■ getChunkSize() method
■ writeChunk() method
5-14 Oracle C++ Call Interface Programmer’s Guide