package org.infinispan.demo.carmart.session;
import org.infinispan.demo.carmart.model.Car;
import org.infinispan.demo.carmart.session.EntityManagerFactoryProvider;
import javax.enterprise.inject.Model;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceUnit;
import javax.persistence.Query;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.util.List;
import java.util.logging.Logger;
/**
* Adds, retrieves, removes new cars from the cache. Also returns a list of cars stored in the cache.
*
*
*/
@Model
public class CarManager {
private Logger log = Logger.getLogger(this.getClass().getName());
public static final String CACHE_NAME = "carcache";
public static final String CAR_NUMBERS_KEY = "carnumbers";
@PersistenceUnit(unitName = "org.infinispan.demo.carmart")
private EntityManagerFactoryProvider provider;
private String carId;
private Car car = new Car();
public CarManager() {
}
public String addNewCar() {
try {
EntityManager em = provider.getEntityManagerFactory().createEntityManager();
em.persist(car);
em.close();
log.info("add a new car");
} catch (Exception e) {
log.warning("An exception occured while adding a new car");
e.printStackTrace();
}
return "home";
}
public String addNewCarWithRollback() {
return "home";
}
public String showCarDetails(String numberPlate) {
try {
EntityManager em = provider.getEntityManagerFactory().createEntityManager();
this.car = em.find(Car.class, numberPlate);
em.close();
log.info("show car " + numberPlate + " details");
} catch (Exception e) {
log.warning("An exception occured while extracting " + numberPlate + " from infinispan");
e.printStackTrace();
}
return "showdetails";
}
public List<String> getCarList() {
List<String> result = null;
try {
EntityManager em = provider.getEntityManagerFactory().createEntityManager();
Query query = em.createQuery("SELECT * FROM Car");
result = query.getResultList();
em.close();
log.info("extract cae list");
} catch (Exception e) {
log.warning("An exception occured while get car list");
e.printStackTrace();
}
return result;
}
public String removeCar(String numberPlate) {
try {
EntityManager em = provider.getEntityManagerFactory().createEntityManager();
Car car = em.find(Car.class, numberPlate);
em.remove(car);
em.close();
log.info("remote car " + numberPlate);
} catch (Exception e) {
log.warning("error whiling remote car " + numberPlate);
e.printStackTrace();
}
return null;
}
public void setCarId(String carId) {
this.carId = carId;
}
public String getCarId() {
return carId;
}
public void setCar(Car car) {
this.car = car;
}
public Car getCar() {
return car;
}
public static String encode(String key) {
try {
return URLEncoder.encode(key, "UTF-8");
} catch (UnsupportedEncodingException e) {
throw new RuntimeException(e);
}
}
public static String decode(String key) {
try {
return URLDecoder.decode(key, "UTF-8");
} catch (UnsupportedEncodingException e) {
throw new RuntimeException(e);
}
}
}