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ircd:Ⓜ️ Reenable the room::maxdepth() query with efficiency.

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This commit is contained in:
Jason Volk 2018-02-08 17:17:11 -08:00
parent 2db910adea
commit fd7792d32b
2 changed files with 12 additions and 19 deletions
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4
include/ircd/m/room.h
View file

@ -96,8 +96,8 @@ struct ircd::m::room
// observer misc
bool membership(const m::id::user &, const string_view &membership = "join") const;
uint64_t maxdepth(event::id::buf &) const;
uint64_t maxdepth() const;
int64_t maxdepth(event::id::buf &) const;
int64_t maxdepth() const;
// modify
room(const alias &, const event::id &event_id = {});

27
ircd/m/room.cc
View file

@ -409,8 +409,7 @@ const
return m::vm::test(query, closure);
}
/// academic search
uint64_t
int64_t
ircd::m::room::maxdepth()
const
{
@ -418,28 +417,22 @@ const
return maxdepth(buf);
}
/// academic search
uint64_t
int64_t
ircd::m::room::maxdepth(event::id::buf &buf)
const
{
const vm::query<vm::where::equal> query
const auto it
{
{ "room_id", room_id },
dbs::room_events.begin(room_id)
};
int64_t depth{0};
vm::for_each(query, [&buf, &depth]
(const auto &event)
{
if(json::get<"depth"_>(event) > depth)
{
depth = json::get<"depth"_>(event);
buf = json::get<"event_id"_>(event);
}
});
if(!it)
return -1;
return depth;
const auto &key(it->first);
const auto parts{dbs::room_events_key(key)};
buf = std::get<1>(parts);
return std::get<0>(parts);
}
//