[#254] object: Support new values of search match type

Support STRING_NOT_EQUAL and NOT_PRESENT match types
of object search filters.

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>

pkg/object/search.go

@@ -15,12 +15,18 @@ type SearchMatchType uint32
 const (
 	MatchUnknown SearchMatchType = iota
 	MatchStringEqual
+	MatchStringNotEqual
+	MatchNotPresent
 )
 
 func (m SearchMatchType) ToV2() v2object.MatchType {
 	switch m {
 	case MatchStringEqual:
 		return v2object.MatchStringEqual
+	case MatchStringNotEqual:
+		return v2object.MatchStringNotEqual
+	case MatchNotPresent:
+		return v2object.MatchNotPresent
 	default:
 		return v2object.MatchUnknown
 	}
@@ -30,6 +36,10 @@ func SearchMatchFromV2(t v2object.MatchType) (m SearchMatchType) {
 	switch t {
 	case v2object.MatchStringEqual:
 		m = MatchStringEqual
+	case v2object.MatchStringNotEqual:
+		m = MatchStringNotEqual
+	case v2object.MatchNotPresent:
+		m = MatchNotPresent
 	default:
 		m = MatchUnknown
 	}

pkg/object/search_test.go

@@ -12,8 +12,10 @@ import (
 
 var (
 	eqV2Matches = map[object.SearchMatchType]v2object.MatchType{
-		object.MatchUnknown:     v2object.MatchUnknown,
+		object.MatchUnknown:        v2object.MatchUnknown,
-		object.MatchStringEqual: v2object.MatchStringEqual,
+		object.MatchStringEqual:    v2object.MatchStringEqual,
+		object.MatchStringNotEqual: v2object.MatchStringNotEqual,
+		object.MatchNotPresent:     v2object.MatchNotPresent,
 	}
 )
 

v2/object/types.go

@@ -226,6 +226,8 @@ const (
 const (
 	MatchUnknown MatchType = iota
 	MatchStringEqual
+	MatchStringNotEqual
+	MatchNotPresent
 )
 
 func (h *ShortHeader) GetVersion() *refs.Version {