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gitea/vendor/github.com/olivere/elastic/v7/CHANGELOG-7.0.md
Lunny Xiao 5dbf36f356
Issue search support elasticsearch (#9428)
* Issue search support elasticsearch

* Fix lint

* Add indexer name on app.ini

* add a warnning on SearchIssuesByKeyword

* improve code
2020-02-13 14:06:17 +08:00

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# Changes from 6.0 to 7.0
See [breaking changes](https://www.elastic.co/guide/en/elasticsearch/reference/7.x/breaking-changes-7.0.html).
## SearchHit.Source changed from `*json.RawMessage` to `json.RawMessage`
The `SearchHit` structure changed from
```
// SearchHit is a single hit.
type SearchHit struct {
...
Source *json.RawMessage `json:"_source,omitempty"` // stored document source
...
}
```
to
```
// SearchHit is a single hit.
type SearchHit struct {
...
Source json.RawMessage `json:"_source,omitempty"` // stored document source
...
}
```
As `json.RawMessage` is a `[]byte`, there is no need to specify it
as `*json.RawMessage` as `json.RawMessage` is perfectly ok to represent
a `nil` value.
So when deserializing the search hits, you need to change your code from:
```
for _, hit := range searchResult.Hits.Hits {
var doc Doc
err := json.Unmarshal(*hit.Source, &doc) // notice the * here
if err != nil {
// Deserialization failed
}
}
```
to
```
for _, hit := range searchResult.Hits.Hits {
var doc Doc
err := json.Unmarshal(hit.Source, &doc) // it's missing here
if err != nil {
// Deserialization failed
}
}
```