API Documentation¶
Constants¶
Seek methods, can be used when fetching records or slices.
SEEK_EQ- The cursor is left at EOF (invalidated). A call to lsm_csr_valid() returns non-zero.
SEEK_LE- The cursor is left pointing to the largest key in the database that is smaller than (pKey/nKey). If the database contains no keys smaller than (pKey/nKey), the cursor is left at EOF.
SEEK_GE- The cursor is left pointing to the smallest key in the database that is larger than (pKey/nKey). If the database contains no keys larger than (pKey/nKey), the cursor is left at EOF.
If the fourth parameter is SEEK_LEFAST, this function searches the
database in a similar manner to SEEK_LE, with two differences:
Even if a key can be found (the cursor is not left at EOF), the lsm_csr_value() function may not be used (attempts to do so return LSM_MISUSE).
The key that the cursor is left pointing to may be one that has been recently deleted from the database. In this case it is guaranteed that the returned key is larger than any key currently in the database that is less than or equal to (pKey/nKey).
SEEK_LEFAST requests are intended to be used to allocate database
keys.
Used in calls to LSM.set_safety().
SAFETY_OFFSAFETY_NORMALSAFETY_FULL