PragmaTwice commented on code in PR #1856:
URL: https://github.com/apache/kvrocks/pull/1856#discussion_r1371710331
##########
src/commands/cmd_json.cc:
##########
@@ -171,10 +171,44 @@ class CommandJsonClear : public Commander {
}
};
+class CommandJsonArrLen : public Commander {
+ public:
+ Status Execute(Server *svr, Connection *conn, std::string *output) override {
+ redis::Json json(svr->storage, conn->GetNamespace());
+
+ std::string path = "$";
+ if (args_.size() == 3) {
+ path = args_[2];
+ } else if (args_.size() > 3) {
+ return {Status::RedisExecErr, "The number of arguments is more than
expected"};
+ }
+
+ std::vector<uint64_t> results;
+ auto s = json.ArrLen(args_[1], path, results);
+ if (s.IsNotFound()) {
+ *output = redis::NilString();
+ return Status::OK();
+ }
+ if (!s.ok()) return {Status::RedisExecErr, s.ToString()};
+
+ *output = redis::MultiLen(results.size());
+ for (size_t len : results) {
+ if (len >= 0) {
Review Comment:
This condition is always evaluated to `true`.
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