mirror of
https://github.com/matrix-construct/construct
synced 2024-07-13 22:18:35 +02:00
73 lines
2.4 KiB
C++
73 lines
2.4 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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#pragma once
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#define HAVE_IRCD_M_EVENT_FETCH_H
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struct ircd::m::event::fetch
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:event
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{
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struct opts;
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using keys = event::keys;
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using view_closure = std::function<void (const string_view &)>;
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static const opts default_opts;
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std::array<db::cell, event::size()> cell;
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db::cell _json;
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db::row row;
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bool valid;
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public:
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fetch(const idx &, std::nothrow_t, const opts *const & = nullptr);
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fetch(const idx &, const opts *const & = nullptr);
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fetch(const id &, std::nothrow_t, const opts *const & = nullptr);
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fetch(const id &, const opts *const & = nullptr);
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fetch(const opts *const & = nullptr);
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static bool event_id(const idx &, std::nothrow_t, const id::closure &);
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static void event_id(const idx &, const id::closure &);
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};
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namespace ircd::m
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{
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bool seek(event::fetch &, const event::idx &, std::nothrow_t, const event::fetch::opts *const & = nullptr);
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void seek(event::fetch &, const event::idx &, const event::fetch::opts *const & = nullptr);
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bool seek(event::fetch &, const event::id &, std::nothrow_t, const event::fetch::opts *const & = nullptr);
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void seek(event::fetch &, const event::id &, const event::fetch::opts *const & = nullptr);
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}
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struct ircd::m::event::fetch::opts
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{
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/// Event property selector
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event::keys keys;
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/// Database get options passthru
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db::gopts gopts;
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/// Whether to allowing querying the event_json to populate the event if
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/// it would be more efficient based on the keys being sought. Ex. If all
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/// keys are being sought then we can make a single query to event_json
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/// rather than a concurrent row query. This is enabled by default.
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bool query_json_maybe {true};
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/// Whether to force only querying for event_json to populate the event,
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/// regardless of what keys are sought in the property selector. This is
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/// not enabled by default.
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bool query_json_only {false};
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opts(const event::keys &, const db::gopts & = {});
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opts(const event::keys::selection &, const db::gopts & = {});
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opts(const db::gopts &, const event::keys::selection & = {});
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opts() = default;
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};
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