31 lines
1.0 KiB
Java
31 lines
1.0 KiB
Java
package ch.usi.inf.sa4.sanmarinoes.smarthut.models;
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import java.math.BigDecimal;
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import java.util.List;
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import java.util.Optional;
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import javax.transaction.Transactional;
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import org.springframework.data.jpa.repository.Query;
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public interface ThermostatRepository extends DeviceRepository<Thermostat> {
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/**
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* Finds all devices belonging to a user
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*
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* @param username the User's username
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* @return all devices of that user
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*/
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@Transactional
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@Query("SELECT t FROM Thermostat t JOIN t.room r JOIN r.user u WHERE u.username = ?1")
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List<Thermostat> findAllByUsername(String username);
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/**
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* Computes the average temperature of all temperature sensors in the room
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*
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* @param thermostatRoomId room ID of the thermostat
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* @return an optional big decimal, empty if none found
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*/
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@Query(
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"SELECT AVG(s.value) FROM Sensor s JOIN s.room r WHERE s.sensor = 'TEMPERATURE' AND r.id = ?1")
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Optional<BigDecimal> getAverageTemperature(Long thermostatRoomId);
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}
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