Erase Method

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.