jeszcze jeden przykład

PC29-HibenateNowy/src/main/java/hr/przyklady/Odczyt06_Warunek.java

+package hr.przyklady;
+
+import hr.model.Employee;
+
+import jakarta.persistence.*;
+import javax.swing.*;
+import java.util.List;
+
+public class Odczyt06_Warunek {
+
+	public static void main(String[] args) {
+
+		EntityManagerFactory emf = null;
+		EntityManager em = null;
+		try {
+			emf = Persistence.createEntityManagerFactory("hr");
+			em = emf.createEntityManager();
+			
+			String kogoSzukam = JOptionPane.showInputDialog("Podaj kod stanowiska");
+			
+			// to działało:
+			// TypedQuery<Employee> query = em.createQuery("SELECT emp FROM Employee emp WHERE job.jobId = ?1", Employee.class);
+			// query.setParameter(1, kogoSzukam);
+
+			// ale to już nie ("legacy parameter style"):
+			// TypedQuery<Employee> query = em.createQuery("SELECT emp FROM Employee emp WHERE job.jobId = ?", Employee.class);
+			// query.setParameter(1, kogoSzukam);
+
+			// wszystkie trzy zapisy zadziałały:
+			// TypedQuery<Employee> query = em.createQuery("SELECT emp FROM Employee emp WHERE job_id = :kto", Employee.class);
+			// TypedQuery<Employee> query = em.createQuery("SELECT emp FROM Employee emp WHERE job.jobId = :kto", Employee.class);
+			TypedQuery<Employee> query = em.createQuery("SELECT emp FROM Employee emp WHERE emp.job.jobId = :kto", Employee.class);
+			query.setParameter("kto", kogoSzukam);
+			
+			List<Employee> lista = query.getResultList();
+			System.out.println("Ilość rekordów " + lista.size());
+			for (Employee employee : lista) {
+				System.out.println(employee.getFirstName() + " " + employee.getLastName());
+			}
+			
+		} finally {
+			if (em != null)
+				em.close();
+			if (emf != null)
+				emf.close();
+		}
+	}
+}