Adding AirplaneTypeService

core/src/main/java/cz/muni/fi/pa165/core/service/airplanetype/AirplaneTypeService.java

+package cz.muni.fi.pa165.core.service.airplanetype;
+
+import cz.muni.fi.pa165.core.data.domain.AirplaneType;
+import cz.muni.fi.pa165.core.service.common.BaseService;
+
+import java.util.Optional;
+
+public interface AirplaneTypeService extends BaseService<AirplaneType, Long> {
+
+    Optional<AirplaneType> findByName(String name);
+}
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core/src/main/java/cz/muni/fi/pa165/core/service/airplanetype/AirplaneTypeServiceImpl.java

+package cz.muni.fi.pa165.core.service.airplanetype;
+
+import cz.muni.fi.pa165.core.data.domain.AirplaneType;
+import cz.muni.fi.pa165.core.data.repository.airplanetype.AirplaneTypeRepository;
+import cz.muni.fi.pa165.core.service.common.BaseServiceImpl;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.Optional;
+
+@Service
+public class AirplaneTypeServiceImpl extends BaseServiceImpl<AirplaneType, Long> implements AirplaneTypeService {
+
+    private final AirplaneTypeRepository airplaneTypeRepository;
+
+    @Autowired
+    public AirplaneTypeServiceImpl(AirplaneTypeRepository airplaneTypeRepository) {
+        super(airplaneTypeRepository);
+        this.airplaneTypeRepository = airplaneTypeRepository;
+    }
+
+    @Override
+    public Optional<AirplaneType> findByName(String name) {
+        return airplaneTypeRepository.findByName(name);
+    }
+}
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