92 lines
1.8 KiB
C++
92 lines
1.8 KiB
C++
// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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bool
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ircd::m::prefetch(const event::id &event_id,
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const event::fetch::opts &opts)
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{
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if(prefetch(event_id, "_event_idx"))
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return true;
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if(prefetch(index(std::nothrow, event_id), opts))
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return true;
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return false;
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}
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bool
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ircd::m::prefetch(const event::id &event_id,
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const string_view &key)
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{
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if(db::prefetch(dbs::event_idx, event_id))
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return true;
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if(key == "_event_idx")
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return false;
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if(prefetch(index(std::nothrow, event_id), key))
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return true;
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return false;
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}
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bool
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ircd::m::prefetch(const event::idx &event_idx,
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const event::fetch::opts &opts)
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{
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if(event::fetch::should_seek_json(opts))
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{
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if(!event_idx)
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return false;
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return db::prefetch(dbs::event_json, byte_view<string_view>{event_idx});
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}
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const event::keys keys
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{
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opts.keys
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};
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const vector_view<const string_view> cols
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{
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keys
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};
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bool ret{false};
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for(const auto &col : cols)
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if(col)
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ret |= prefetch(event_idx, col);
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return ret;
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}
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bool
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ircd::m::prefetch(const event::idx &event_idx,
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const string_view &key)
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{
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const auto &column_idx
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{
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json::indexof<event>(key)
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};
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if(column_idx >= dbs::event_column.size())
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return prefetch(event_idx, event::fetch::default_opts);
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auto &column
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{
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dbs::event_column.at(column_idx)
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};
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if(!event_idx)
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return false;
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return db::prefetch(column, byte_view<string_view>{event_idx});
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}
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