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using Dapper;
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using NzbDrone.Core.Datastore;
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namespace NzbDrone.Core.Housekeeping.Housekeepers
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{
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public class CleanupOrphanedHistoryItems : IHousekeepingTask
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{
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private readonly IMainDatabase _database;
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public CleanupOrphanedHistoryItems(IMainDatabase database)
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{
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_database = database;
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}
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public void Clean()
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{
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CleanupOrphanedByAuthor();
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CleanupOrphanedByBook();
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}
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private void CleanupOrphanedByAuthor()
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{
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using (var mapper = _database.OpenConnection())
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{
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mapper.Execute(@"DELETE FROM ""History""
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WHERE ""Id"" IN (
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SELECT ""History"".""Id"" FROM ""History""
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LEFT OUTER JOIN ""Authors""
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ON ""History"".""AuthorId"" = ""Authors"".""Id""
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WHERE ""Authors"".""Id"" IS NULL)");
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}
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}
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private void CleanupOrphanedByBook()
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{
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using (var mapper = _database.OpenConnection())
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{
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mapper.Execute(@"DELETE FROM ""History""
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WHERE ""Id"" IN (
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SELECT ""History"".""Id"" FROM ""History""
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LEFT OUTER JOIN ""Books""
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ON ""History"".""BookId"" = ""Books"".""Id""
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WHERE ""Books"".""Id"" IS NULL)");
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}
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}
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}
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}
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