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construct/matrix/event_index.cc

89 lines
1.6 KiB
C++

// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice is present in all copies. The
// full license for this software is available in the LICENSE file.
ircd::m::event::idx
ircd::m::index(const event &event)
try
{
return index(event.event_id);
}
catch(const json::not_found &)
{
throw m::NOT_FOUND
{
"Cannot find index for event without an event_id."
};
}
ircd::m::event::idx
ircd::m::index(std::nothrow_t,
const event &event)
{
return index(std::nothrow, event.event_id);
}
ircd::m::event::idx
ircd::m::index(const event::id &event_id)
{
assert(event_id);
const auto ret
{
index(std::nothrow, event_id)
};
if(!ret)
throw m::NOT_FOUND
{
"no index found for %s",
string_view{event_id}
};
return ret;
}
ircd::m::event::idx
ircd::m::index(std::nothrow_t,
const event::id &event_id)
{
event::idx ret{0};
index(std::nothrow, event_id, [&ret]
(const event::idx &event_idx)
{
ret = event_idx;
});
return ret;
}
bool
ircd::m::index(std::nothrow_t,
const event::id &event_id,
const event::closure_idx &closure)
{
auto &column
{
dbs::event_idx
};
if(!event_id)
return false;
return column(event_id, std::nothrow, [&closure]
(const string_view &value)
{
const event::idx &event_idx
{
byte_view<event::idx>(value)
};
closure(event_idx);
});
}