worryg0d commented on code in PR #1838:
URL:
https://github.com/apache/cassandra-gocql-driver/pull/1838#discussion_r1824060071
##########
marshal.go:
##########
@@ -333,7 +333,7 @@ func marshalVarchar(info TypeInfo, value interface{})
([]byte, error) {
case k == reflect.Slice && t.Elem().Kind() == reflect.Uint8:
return rv.Bytes(), nil
}
- return nil, marshalErrorf("can not marshal %T into %s", value, info)
+ return nil, marshalErrorf("can not marshal %T into %s. Accepted types:
Marshaler, string, []byte, unsetColumn.", value, info)
Review Comment:
`unsetColumn` is not an exported type, so the driver doesn't have to expose
it to the user. There is a `UnsetValue` global var of type `unsetColumn` which
is meant to be used to ignore writing. You can find it
[here](https://github.com/apache/cassandra-gocql-driver/blob/2a5056d6b1d1d479ca5ee97ddd1d95a9d8e8c4e2/frame.go#L50).
##########
marshal.go:
##########
@@ -2280,7 +2280,7 @@ func marshalUDT(info TypeInfo, value interface{})
([]byte, error) {
}
if k.Kind() != reflect.Struct || !k.IsValid() {
- return nil, marshalErrorf("cannot marshal %T into %s", value,
info)
+ return nil, marshalErrorf("cannot marshal %T into %s. Accepted
types: Marshaler, unsetColumn, UDTMarshaler, UDTMarshaler,
map[string]interface{}, struct.", value, info)
Review Comment:
Here **UDTMarshaler** is duplicated
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