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two_phase_set.go
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two_phase_set.go
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package hob
import (
"encoding/json"
)
type TwoPhaseSet struct {
Type string `json:"type"`
A map[string]bool `json:"-"`
R map[string]bool `json:"-"`
JSONA []string `json:"a"`
JSONR []string `json:"r"`
}
func NewTwoPhaseSet() (twoPhaseSet *TwoPhaseSet, err error) {
add := make(map[string]bool)
remove := make(map[string]bool)
twoPhaseSet = &TwoPhaseSet{
Type: "2p-set",
A: add,
R: remove,
}
return
}
func (twoPhaseSet *TwoPhaseSet) Add(value string) (err error) {
twoPhaseSet.A[value] = true
return
}
func (twoPhaseSet *TwoPhaseSet) Remove(value string) (err error) {
twoPhaseSet.R[value] = true
return
}
func (twoPhaseSet *TwoPhaseSet) Test(value string) (is_member bool, err error) {
if _, ok := twoPhaseSet.R[value]; ok {
is_member = false
return
}
if _, ok := twoPhaseSet.A[value]; ok {
is_member = true
return
}
return
}
func (twoPhaseSet *TwoPhaseSet) JSON() (json_bytes []byte, err error) {
for k, _ := range twoPhaseSet.A {
twoPhaseSet.JSONA = append(twoPhaseSet.JSONA, k)
}
for k, _ := range twoPhaseSet.R {
twoPhaseSet.JSONR = append(twoPhaseSet.JSONR, k)
}
json_bytes, err = json.Marshal(twoPhaseSet)
return
}
func (twoPhaseSet *TwoPhaseSet) Clone() (clone *TwoPhaseSet, err error) {
clone = &TwoPhaseSet{
Type: twoPhaseSet.Type,
A: twoPhaseSet.A,
R: twoPhaseSet.R,
}
return
}
func (twoPhaseSet *TwoPhaseSet) Merge(oTwoPhaseSet *TwoPhaseSet) (merged_set *TwoPhaseSet, err error) {
clone, err := twoPhaseSet.Clone()
if err != nil {
return nil, err
}
merged_set = clone
return
}