func (o *Options) InsertAltFilter(p filter.Filter) error {
if o == nil {
return ErrNotSet
}
if p == nil {
return ErrInvalid
}
o.mu.Lock()
o.initFilters()
o.filters[p.Name()] = p
o.mu.Unlock()
return nil
}
func (o *Options) SetFilter(p filter.Filter) error {
if o == nil {
return ErrNotSet
}
o.mu.Lock()
o.Filter = p
if p != nil {
o.initFilters()
o.filters[p.Name()] = p
}
o.mu.Unlock()
return nil
}
func (b *filterBlock) contains(filter filter.Filter, offset uint64, key []byte) bool {
i := int(offset >> b.baseLg)
if i < b.filtersNum {
o := b.data[b.oOffset+i*4:]
n := int(binary.LittleEndian.Uint32(o))
m := int(binary.LittleEndian.Uint32(o[4:]))
if n < m && m <= b.oOffset {
return filter.Contains(b.data[n:m], key)
} else if n == m {
return false
}
}
return true
}