Added named based WeatherProvider lookup.

Author: lreimer

spring-weather-app/src/main/java/cloud/nativ/flamewars/WeatherApp.java

@@ -9,6 +9,7 @@
 import java.util.concurrent.TimeUnit;
 import java.util.logging.Level;
 import java.util.logging.Logger;
+import java.util.stream.IntStream;
 
 public class WeatherApp {
 
@@ -18,8 +19,17 @@ public static void main(String[] args) {
  WeatherApp app = new WeatherApp();
  app.start();
 
- Weather rosenheim = app.getWeather("Rosenheim");
- LOGGER.info(rosenheim.toString());
+ // who needs for loops, right?!
+ IntStream.range(0, 3).forEach(i -> {
+ Weather rosenheim = app.getWeather("Rosenheim");
+ LOGGER.info(rosenheim.toString());
+ });
+
+ // oops, I did it again. ;)
+ IntStream.range(0, 3).forEach(i -> {
+ Weather london = app.getWeather("London");
+ LOGGER.info(london.toString());
+ });
 
  app.stop();
  }

spring-weather-app/src/main/java/cloud/nativ/flamewars/WeatherProvider.java

@@ -0,0 +1,5 @@
+package cloud.nativ.flamewars;
+
+public interface WeatherProvider {
+ String getWeather();
+}

spring-weather-app/src/main/java/cloud/nativ/flamewars/WeatherRepository.java

@@ -1,11 +1,22 @@
 package cloud.nativ.flamewars;
 
+import org.springframework.beans.BeansException;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.ApplicationContextAware;
 import org.springframework.stereotype.Component;
 
 @Component
-public class WeatherRepository {
+public class WeatherRepository implements ApplicationContextAware {
+
+ private ApplicationContext applicationContext;
 
  public Weather findWeatherByCity(String city) {
- return new Weather(city, "Sunshine");
+ WeatherProvider provider = applicationContext.getBean(city, WeatherProvider.class);
+ return new Weather(city, provider.getWeather());
+ }
+
+ @Override
+ public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
+ this.applicationContext = applicationContext;
  }
 }

spring-weather-app/src/main/java/cloud/nativ/flamewars/provider/LondonWeatherProvider.java

@@ -0,0 +1,12 @@
+package cloud.nativ.flamewars.provider;
+
+import cloud.nativ.flamewars.WeatherProvider;
+import org.springframework.stereotype.Component;
+
+@Component("London")
+public class LondonWeatherProvider implements WeatherProvider {
+ @Override
+ public String getWeather() {
+ return "Rainy";
+ }
+}

spring-weather-app/src/main/java/cloud/nativ/flamewars/provider/RosenheimWeatherProvider.java

@@ -0,0 +1,12 @@
+package cloud.nativ.flamewars.provider;
+
+import cloud.nativ.flamewars.WeatherProvider;
+import org.springframework.stereotype.Component;
+
+@Component("Rosenheim")
+public class RosenheimWeatherProvider implements WeatherProvider {
+ @Override
+ public String getWeather() {
+ return "Sunshine";
+ }
+}