HLTech / judge-d

import com.hltech.judged.server.domain.ServiceVersion;

import com.hltech.judged.server.domain.contracts.ServiceContracts;

import com.hltech.judged.server.domain.contracts.ServiceContractsRepository;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Component;

import javax.persistence.EntityManager;

import java.util.List;

import java.util.Optional;

import static java.util.Optional.ofNullable;

@Component

public class JpaServiceContractsRepository implements ServiceContractsRepository {

    private final EntityManager entityManager;

    @Autowired

    public JpaServiceContractsRepository(EntityManager entityManager) {

        this.entityManager = entityManager;

    }

    @Override

    public Optional<ServiceContracts> findOne(ServiceVersion serviceVersion) {

        return ofNullable(entityManager.find(

            ServiceContracts.class,

            new ServiceVersion(serviceVersion.getName(), serviceVersion.getVersion())

        ));

    }

    @Override

    public String getService(String name) {

        return entityManager

            .createQuery("select distinct o.id.name from " + ServiceContracts.class.getName() + " o where o.id.name = :name", String.class)

            .setParameter("name", name)

            .getSingleResult();

    }

    @Override

    public List<ServiceContracts> findAllByServiceName(String name) {

        return entityManager

            .createQuery("select o from " + ServiceContracts.class.getName() + " o where o.id.name = :name", ServiceContracts.class)

            .setParameter("name", name)

            .getResultList();

    }

    @Override

    public List<String> getServiceNames() {

        return entityManager

            .createQuery("select distinct o.id.name from " + ServiceContracts.class.getName() + " o", String.class)

            .getResultList();

    }

}