76 lines
2.5 KiB
Go
76 lines
2.5 KiB
Go
package entity
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import "github.com/jinzhu/gorm"
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// UpdatePhotoCounts updates photos count in related tables as needed.
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func UpdatePhotoCounts() error {
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log.Info("index: updating photo counts")
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if err := Db().Table("places").
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UpdateColumn("photo_count", gorm.Expr("(SELECT COUNT(*) FROM photos ph "+
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"WHERE places.id = ph.place_id "+
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"AND ph.photo_quality >= 0 "+
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"AND ph.photo_private = 0 "+
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"AND ph.deleted_at IS NULL)")).Error; err != nil {
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return err
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}
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/* See internal/entity/views.go
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CREATE OR REPLACE VIEW label_counts AS
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SELECT label_id, SUM(photo_count) AS photo_count FROM (
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(SELECT l.id AS label_id, COUNT(*) AS photo_count FROM labels l
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JOIN photos_labels pl ON pl.label_id = l.id
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JOIN photos ph ON pl.photo_id = ph.id
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WHERE pl.uncertainty < 100
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AND ph.photo_quality >= 0
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AND ph.photo_private = 0
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AND ph.deleted_at IS NULL GROUP BY l.id)
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UNION ALL
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(SELECT l.id AS label_id, COUNT(*) AS photo_count FROM labels l
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JOIN categories c ON c.category_id = l.id
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JOIN photos_labels pl ON pl.label_id = c.label_id
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JOIN photos ph ON pl.photo_id = ph.id
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WHERE pl.uncertainty < 100
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AND ph.photo_quality >= 0
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AND ph.photo_private = 0
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AND ph.deleted_at IS NULL GROUP BY l.id)) counts GROUP BY label_id
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*/
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/* TODO: Requires proper view support in TiDB
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if err := Db().
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Table("labels").
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UpdateColumn("photo_count",
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gorm.Expr("(SELECT photo_count FROM label_counts WHERE label_id = labels.id)")).Error; err != nil {
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log.Warn(err)
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} */
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if err := Db().
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Table("labels").
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UpdateColumn("photo_count",
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gorm.Expr(`(SELECT photo_count FROM (
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SELECT label_id, SUM(photo_count) AS photo_count FROM (
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(SELECT l.id AS label_id, COUNT(*) AS photo_count FROM labels l
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JOIN photos_labels pl ON pl.label_id = l.id
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JOIN photos ph ON pl.photo_id = ph.id
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WHERE pl.uncertainty < 100
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AND ph.photo_quality >= 0
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AND ph.photo_private = 0
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AND ph.deleted_at IS NULL GROUP BY l.id)
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UNION ALL
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(SELECT l.id AS label_id, COUNT(*) AS photo_count FROM labels l
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JOIN categories c ON c.category_id = l.id
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JOIN photos_labels pl ON pl.label_id = c.label_id
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JOIN photos ph ON pl.photo_id = ph.id
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WHERE pl.uncertainty < 100
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AND ph.photo_quality >= 0
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AND ph.photo_private = 0
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AND ph.deleted_at IS NULL GROUP BY l.id)) counts GROUP BY label_id
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) label_counts WHERE label_id = labels.id)`)).Error; err != nil {
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return err
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}
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return nil
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}
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