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construct/matrix/event_cached.cc

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2019-09-27 03:36:03 +02:00
// 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.
bool
ircd::m::cached(const id::event &event_id)
{
return cached(event_id, event::fetch::default_opts);
}
bool
ircd::m::cached(const id::event &event_id,
const event::fetch::opts &opts)
{
if(!db::cached(dbs::event_idx, event_id, opts.gopts))
return false;
const event::idx event_idx
{
index(std::nothrow, event_id)
2019-09-27 03:36:03 +02:00
};
return event_idx?
cached(event_idx, opts.gopts):
false;
}
bool
ircd::m::cached(const event::idx &event_idx)
{
return cached(event_idx, event::fetch::default_opts);
}
bool
ircd::m::cached(const event::idx &event_idx,
const event::fetch::opts &opts)
{
const byte_view<string_view> &key
{
event_idx
};
if(event::fetch::should_seek_json(opts))
return db::cached(dbs::event_json, key, opts.gopts);
const auto &selection
{
opts.keys
};
const auto result
{
cached_keys(event_idx, opts)
};
for(size_t i(0); i < selection.size(); ++i)
{
auto &column
{
dbs::event_column.at(i)
};
if(column && selection.test(i) && !result.test(i))
{
if(!db::has(column, key, opts.gopts))
continue;
return false;
}
}
return true;
}
ircd::m::event::keys::selection
ircd::m::cached_keys(const event::idx &event_idx,
const event::fetch::opts &opts)
{
const byte_view<string_view> &key
{
event_idx
};
event::keys::selection ret(0);
const event::keys::selection &selection(opts.keys);
for(size_t i(0); i < selection.size(); ++i)
{
auto &column
{
dbs::event_column.at(i)
};
if(column && db::cached(column, key, opts.gopts))
ret.set(i);
}
return ret;
}