vicrodh
6fd83c42df
Materialize source-scoped artist aggregates and FTS, then expose exact keyset pages and bounded A-Z metadata for the existing Artists rail. Query the selected artist's albums through the indexed credit relationship with an independent bounded model, generation cancellation, artwork updates, and per-surface legacy fallback. cx
80 lines
2.6 KiB
C++
80 lines
2.6 KiB
C++
#ifndef QBZ_LOCAL_ARTISTS_MODEL_H
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#define QBZ_LOCAL_ARTISTS_MODEL_H
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#include <QtCore/QAbstractListModel>
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#include <QtCore/QHash>
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#include <QtCore/QList>
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#include <QtCore/QVariantMap>
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class LocalArtistsModel final : public QAbstractListModel
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{
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Q_OBJECT
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Q_PROPERTY(int generation READ generation NOTIFY generationChanged)
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Q_PROPERTY(qint64 totalCount READ totalCount NOTIFY totalCountChanged)
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Q_PROPERTY(qint64 artistTotal READ artistTotal NOTIFY artistTotalChanged)
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Q_PROPERTY(int residentArtists READ residentArtists NOTIFY residentArtistsChanged)
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Q_PROPERTY(qint64 evictions READ evictions NOTIFY evictionsChanged)
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public:
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enum Role { ModelDataRole = Qt::UserRole + 1 };
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explicit LocalArtistsModel(QObject *parent = nullptr);
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int rowCount(const QModelIndex &parent = QModelIndex()) const override;
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QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
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QHash<int, QByteArray> roleNames() const override;
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int generation() const { return m_generation; }
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qint64 totalCount() const { return m_totalCount; }
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qint64 artistTotal() const { return m_artistTotal; }
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int residentArtists() const { return m_residentArtists; }
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qint64 evictions() const { return m_evictions; }
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Q_INVOKABLE QVariantMap rowAt(qint64 row) const;
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Q_INVOKABLE void setArtwork(const QString &artKey, const QString &path);
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void resetQuery(int generation, qint64 totalCount, qint64 artistTotal);
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bool applyPage(int generation, int page, const QByteArray &json);
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signals:
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void generationChanged();
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void totalCountChanged();
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void artistTotalChanged();
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void residentArtistsChanged();
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void evictionsChanged();
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void pageMiss(int page, int generation);
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private:
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struct Entry {
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QVariantMap values;
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QString artKey;
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bool isArtist = false;
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};
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using Page = QList<Entry>;
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static constexpr int PageEntries = 100;
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static constexpr int MaxResidentArtists = 2000;
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QVariantMap modelData(qint64 row) const;
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void requestPage(int page, bool prefetch = false) const;
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void touch(int page) const;
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void evictIfNeeded();
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int m_generation = 0;
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qint64 m_totalCount = 0;
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qint64 m_artistTotal = 0;
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QHash<int, Page> m_pages;
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mutable QList<int> m_lru;
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mutable QHash<int, bool> m_pending;
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int m_residentArtists = 0;
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qint64 m_evictions = 0;
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};
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extern "C" {
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void qbz_local_artists_register_qml_type();
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void qbz_local_artists_reset(int generation, qint64 totalCount, qint64 artistTotal);
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bool qbz_local_artists_apply_page(int generation, int page, const char *json);
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}
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#endif // QBZ_LOCAL_ARTISTS_MODEL_H
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