Applies To
OBlob
OClob
Description
Erases the specified portion of the LOB value of this object starting at the
specified offset.
Usage
void Erase(unsigned long amount, unsigned long offset) const throw(OException)
Arguments
amount
An integer specifying the maximum number of characters or bytes to be erased.
offset
An integer specifying absolute offset of the LOB value from which to start
erasing. Default value is 1.
Remarks
Either a row-level lock or object-level lock should be obtained before calling
this method. The actual number of characters/bytes and the requested number of
characters/bytes will differ if the end of the LOB value is reached before
erasing the requested number of characters/bytes. For OBlobs, erasing means that
zeroes are used to overwrite the existing LOB value. For OClobs, erasing means
that spaces overwrite the existing LOB value.