Exemplo n.º 1
0
func (tf tFiles) getOverlaps(min, max []byte, r *tFiles, disjSorted bool, ucmp comparer.BasicComparer) {
	for i := 0; i < len(tf); {
		t := tf[i]
		i++
		if t.isAfter(min, ucmp) || t.isBefore(max, ucmp) {
			continue
		}

		*r = append(*r, t)
		if !disjSorted {
			// Level-0 files may overlap each other.  So check if the newly
			// added file has expanded the range.  If so, restart search.
			if min != nil && ucmp.Compare(t.min.ukey(), min) < 0 {
				min = t.min.ukey()
				*r = nil
				i = 0
			} else if max != nil && ucmp.Compare(t.max.ukey(), max) > 0 {
				max = t.max.ukey()
				*r = nil
				i = 0
			}
		}
	}

	return
}
Exemplo n.º 2
0
// test if key is before t
func (t *tFile) isBefore(key []byte, ucmp comparer.BasicComparer) bool {
	return key != nil && ucmp.Compare(key, t.min.ukey()) < 0
}
Exemplo n.º 3
0
// test if key is after t
func (t *tFile) isAfter(key []byte, ucmp comparer.BasicComparer) bool {
	return key != nil && ucmp.Compare(key, t.max.ukey()) > 0
}