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Diffstat (limited to 'src/database/include/index.hpp')
| -rw-r--r-- | src/database/include/index.hpp | 78 |
1 files changed, 0 insertions, 78 deletions
diff --git a/src/database/include/index.hpp b/src/database/include/index.hpp deleted file mode 100644 index 45dae464..00000000 --- a/src/database/include/index.hpp +++ /dev/null @@ -1,78 +0,0 @@ -/* - * Copyright 2023 jacqueline <me@jacqueline.id.au> - * - * SPDX-License-Identifier: GPL-3.0-only - */ - -#pragma once - -#include <stdint.h> - -#include <cstdint> -#include <string> -#include <variant> -#include <vector> - -#include "collation.hpp" -#include "leveldb/db.h" -#include "leveldb/slice.h" - -#include "leveldb/write_batch.h" -#include "memory_resource.hpp" -#include "track.hpp" - -namespace database { - -typedef uint8_t IndexId; - -struct IndexInfo { - // Unique id for this index - IndexId id; - // Localised, user-friendly description of this index. e.g. "Albums by Artist" - // or "All Tracks". - std::pmr::string name; - // Specifier for how this index breaks down the database. - std::vector<Tag> components; -}; - -struct IndexKey { - struct Header { - // The index that this key was created for. - IndexId id; - // The number of components of IndexInfo that have already been filtered. - // For example, if an index consists of { kGenre, kArtist }, and this key - // represents an artist, then depth = 1. - std::uint8_t depth; - // The cumulative hash of all filtered components, in order. For example, if - // an index consists of { kArtist, kAlbum, kTitle }, and we are at depth = 2 - // then this may contain hash(hash("Jacqueline"), "My Cool Album"). - std::uint64_t components_hash; - - bool operator==(const Header&) const = default; - }; - Header header; - - // The filterable / selectable item that this key represents. "Jacqueline" for - // kArtist, "My Cool Album" for kAlbum, etc. - std::optional<std::pmr::string> item; - // If this is a leaf component, the track id for this record. - // This could reasonably be the value for a record, but we keep it as a part - // of the key to help with disambiguation. - std::optional<TrackId> track; -}; - -auto Index(locale::ICollator&, const IndexInfo&, const Track&) - -> std::vector<std::pair<IndexKey, std::string>>; - -auto ExpandHeader(const IndexKey::Header&, - const std::optional<std::pmr::string>&) -> IndexKey::Header; - -// Predefined indexes -// TODO(jacqueline): Make these defined at runtime! :) - -extern const IndexInfo kAlbumsByArtist; -extern const IndexInfo kTracksByGenre; -extern const IndexInfo kAllTracks; -extern const IndexInfo kAllAlbums; - -} // namespace database |
