c-treeDB API API for C

ctdbGetSegmentStatus

Retrieves the status of the segment handle.

DECLARATION

ULONG ctdbGetSegmentStatus(CTHANDLE Handle);

DESCRIPTION

Retrieves the status of a segment handle.

The status of the segment handle is a bit map describing one or more changes that have occurred to the segment handle.

RETURN

ctdbGetSegmentStatus returns a bitmap of the following:

Value	Symbolic Constant	Explanation
0x00	CTDBISEG_OLD	Original segment as read from file
0x01	CTDBISEG_NEW	Segment added or inserted
0x02	CTDBISEG_DEL	Original segment deleted
0x04	CTDBISEG_MOVED	Original segment moved
0x10	CTDBISEG_MODE	Segment mode changed
0x20	CTDBISEG_FIELD	Segment field changed

See Appendix A for a complete listing of valid c-tree Plus error values.

EXAMPLE

/* if any segment of an index has changed, call alter table */

for (i = 0; i < (NINT) ctdbGetIndexSegmentCount(hIndex); i++)

{

CTHANDLE hSeg = ctdbGetSegment(hIndex, i);

if (ctdbGetSegmentStatus(hSeg) != CTDBISEG_OLD)

if (ctdbAlterTable(hIndex, CTDB_ALTER_NORMAL) != CTDBRET_OK)

printf("ctdbAlterTable failed\n");

}