Creating Services

README.md

@@ -78,3 +78,6 @@ Now create an entity **Country**, annotate class with annotations **@Entity**, *
 
 ##### Creating Repositories
 same as above
+
+##### Creating Services
+same as above

src/main/java/com/restfulspring/apiexample/service/CityService.java

@@ -0,0 +1,31 @@
+package com.restfulspring.apiexample.service;
+
+import com.restfulspring.apiexample.entity.City;
+import com.restfulspring.apiexample.entity.Country;
+import com.restfulspring.apiexample.repository.CityRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class CityService {
+    @Autowired
+    private CityRepository cityRepository;
+    public List<City> getCities(){
+        return cityRepository.findAll();
+    }
+    public City getCity(int id){
+        return cityRepository.findById(id).orElse(null);
+    }
+    public City addCity(City city){
+        return cityRepository.save(city);
+    }
+    public City updateCity(int id,City city){
+        city.setCityId(id);
+        return cityRepository.save(city);
+    }
+    public void deleteCity(int id){
+        cityRepository.deleteById(id);
+    }
+}

src/main/java/com/restfulspring/apiexample/service/CountryService.java

@@ -0,0 +1,31 @@
+package com.restfulspring.apiexample.service;
+
+import com.restfulspring.apiexample.entity.Country;
+import com.restfulspring.apiexample.repository.CountryRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class CountryService {
+    @Autowired
+    private CountryRepository countryRepository;
+
+    public List<Country> getCountries(){
+        return countryRepository.findAll();
+    }
+    public Country getCountry(int id){
+        return countryRepository.findById(id).orElse(null);
+    }
+    public Country addCountry(Country country){
+        return countryRepository.save(country);
+    }
+    public Country updateCountry(int id,Country country){
+        country.setCountryId(id);
+        return countryRepository.save(country);
+    }
+    public void deleteCountry(int id){
+        countryRepository.deleteById(id);
+    }
+}