Parametry

PC27-Hibernate/src/main/java/przyklady/Parametry.java

+package przyklady;
+
+import java.math.BigDecimal;
+import java.util.List;
+import java.util.Scanner;
+
+import javax.persistence.EntityManager;
+import javax.persistence.EntityManagerFactory;
+import javax.persistence.Persistence;
+import javax.persistence.TypedQuery;
+
+import sklep.model.Product;
+
+public class Parametry {
+
+	public static void main(String[] args) {
+		// JPQL - Java (Jakarta) Persistence Query Language
+		
+		EntityManagerFactory emf = null;
+        EntityManager em = null;
+        try {
+            emf = Persistence.createEntityManagerFactory("sklep");
+            em = emf.createEntityManager();
+            Scanner scanner = new Scanner(System.in);
+            
+            System.out.print("Podaj cenę minimalną: ");
+            BigDecimal min = scanner.nextBigDecimal();
+            System.out.print("Podaj cenę maksymalną: ");
+            BigDecimal max = scanner.nextBigDecimal();
+            
+            TypedQuery<Product> query = em.createQuery(
+            		"SELECT p FROM Product p WHERE p.price BETWEEN :minimum AND :maximum ORDER BY p.price DESC", Product.class);
+            query.setParameter("minimum", min);
+            query.setParameter("maximum", max);
+            List<Product> products = query.getResultList();
+            for(Product product : products) {
+				// System.out.println(product);
+				System.out.println(product.getProductName() + " za cenę " + product.getPrice());
+			}
+        } catch(Exception e) {
+            e.printStackTrace();
+        } finally {
+            if(em != null)
+                em.close();
+            if(emf != null)
+                emf.close();
+        }
+	}
+
+}