refactor: introduce GC, to delete old data

db/migrations/20200131183653_changes_for_new_persistence_layer.go

@@ -0,0 +1,63 @@
+package migrations
+
+import (
+	"database/sql"
+
+	"github.com/pressly/goose"
+)
+
+func init() {
+	goose.AddMigration(Up20200131183653, Down20200131183653)
+}
+
+func Up20200131183653(tx *sql.Tx) error {
+	_, err := tx.Exec(`
+create table search_dg_tmp
+(
+	id varchar(255) not null
+		primary key,
+	item_type varchar(255) default '' not null,
+	full_text varchar(255) default '' not null
+);
+
+insert into search_dg_tmp(id, item_type, full_text) select id, "table", full_text from search;
+
+drop table search;
+
+alter table search_dg_tmp rename to search;
+
+create index search_full_text
+	on search (full_text);
+create index search_table
+	on search (item_type);
+
+update annotation set item_type = 'media_file' where item_type = 'mediaFile';
+`)
+	return err
+}
+
+func Down20200131183653(tx *sql.Tx) error {
+	tx.Exec(`
+create table search_dg_tmp
+(
+	id varchar(255) not null
+		primary key,
+	"table" varchar(255) default '' not null,
+	full_text varchar(255) default '' not null
+);
+
+insert into search_dg_tmp(id, "table", full_text) select id, item_type, full_text from search;
+
+drop table search;
+
+alter table search_dg_tmp rename to search;
+
+create index search_full_text
+	on search (full_text);
+create index search_table
+	on search ("table");
+
+update annotation set item_type = 'mediaFile' where item_type = 'media_file';
+`)
+	return nil
+}