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graph/encoding/graphql: note requirement of dst parameter

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The spanning tree walk sets nodes' IDs using the SetIDFromString method
so note that nodes returned by the destination's NewNode method must
satisfy StringIDSetter.
This commit is contained in:
Dan Kortschak
2023-01-03 18:37:32 +10:30
parent d6b9d45e9e
commit b7bed9533b
1 changed files with 2 additions and 1 deletions
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3
graph/encoding/graphql/decode.go
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@@ -17,7 +17,8 @@ import (
// Unmarshal parses the JSON-encoded data and stores the result in dst.
// Node IDs are obtained from the JSON fields identified by the uid parameter.
// UIDs obtained from the JSON encoding must map to unique node ID values
// consistently across the JSON-encoded spanning tree.
// consistently across the JSON-encoded spanning tree. graph.Node values
// returned by dst.NewNode must satisfy StringIDSetter.
func Unmarshal(data []byte, uid string, dst encoding.Builder) error {
if uid == "" {
return errors.New("graphql: invalid UID field name")