git-hulk commented on code in PR #1856:
URL: https://github.com/apache/kvrocks/pull/1856#discussion_r1371473877
##########
src/types/redis_json.cc:
##########
@@ -187,4 +187,34 @@ rocksdb::Status Json::Clear(const std::string &user_key,
const std::string &path
return write(ns_key, &metadata, json_val);
}
+
+rocksdb::Status Json::ArrLen(const std::string &user_key, const std::string
&path, std::vector<uint64_t> &arr_lens) {
+ auto ns_key = AppendNamespacePrefix(user_key);
+
+ std::string bytes;
+ JsonMetadata metadata;
+ Slice rest;
+
+ auto s = GetMetadata(kRedisJson, ns_key, &bytes, &metadata, &rest);
+ if (!s.ok()) {
+ return s;
+ }
+
+ if (metadata.format != JsonStorageFormat::JSON) {
+ return rocksdb::Status::NotSupported("JSON storage format not supported");
+ }
+
+ auto json_res = JsonValue::FromString(rest.ToStringView());
+ if (!json_res) {
+ return rocksdb::Status::Corruption(json_res.Msg());
+ }
+
+ auto json_val = *std::move(json_res);
Review Comment:
```suggestion
auto ns_key = AppendNamespacePrefix(user_key);
JsonMetadata metadata;
JsonValue json_val;
auto s = read(ns_key, &metadata, &json_val);
if (!s.ok()) return s;
```
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