seaweedfs/weed/util/skiplist/skiplist_serde.go
2021-10-07 21:13:31 -07:00

52 lines
1,003 B
Go

package skiplist
import "bytes"
func compareElement(a *SkipListElement, key []byte) int {
if len(a.Key) == 0 {
return -1
}
return bytes.Compare(a.Key, key)
}
func (node *SkipListElement) Reference() *SkipListElementReference {
if node == nil {
return nil
}
return &SkipListElementReference{
ElementPointer: node.Id,
Key: node.Key,
}
}
func (t *SkipList) SaveElement(element *SkipListElement) error {
if element == nil {
return nil
}
return t.ListStore.SaveElement(element.Id, element)
}
func (t *SkipList) DeleteElement(element *SkipListElement) error {
if element == nil {
return nil
}
return t.ListStore.DeleteElement(element.Id)
}
func (t *SkipList) LoadElement(ref *SkipListElementReference) (*SkipListElement, error) {
if ref.IsNil() {
return nil, nil
}
return t.ListStore.LoadElement(ref.ElementPointer)
}
func (ref *SkipListElementReference) IsNil() bool {
if ref == nil {
return true
}
if len(ref.Key) == 0 {
return true
}
return false
}