[wip] praktikum2

server/src/main/java/org/example/demo/praktikum2/Adresse.java

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+package org.example.demo.praktikum2;
+
+import java.io.Serializable;
+
+import jakarta.persistence.*;
+import lombok.*;
+
+@Entity
+@ToString
+@Getter
+@Setter
+@AllArgsConstructor
+@NoArgsConstructor
+@Builder
+public class Adresse implements Serializable {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private int id;
+
+    @SuppressWarnings("unused")
+    private String strasse;
+
+    @SuppressWarnings("unused")
+    private String plz;
+
+    @SuppressWarnings("unused")
+    private String ort;
+
+    @ManyToOne
+    private Person person;
+}

server/src/main/java/org/example/demo/praktikum2/AdresseService.java

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+package org.example.demo.praktikum2;
+
+import jakarta.ejb.Stateless;
+import jakarta.persistence.EntityManager;
+import jakarta.persistence.PersistenceContext;
+
+@Stateless
+public class AdresseService implements AdresseServiceRemote {
+
+    @PersistenceContext
+    private EntityManager em;
+
+    @Override
+    public int speichereAdresse(Adresse m) {
+        em.persist(m);
+        return m.getId();
+    }
+}

server/src/main/java/org/example/demo/praktikum2/AdresseServiceRemote.java

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+package org.example.demo.praktikum2;
+
+import jakarta.ejb.Remote;
+
+@Remote
+public interface AdresseServiceRemote {
+    int speichereAdresse(Adresse m);
+}

server/src/main/java/org/example/demo/praktikum2/Firma.java

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+package org.example.demo.praktikum2;
+
+import java.io.Serializable;
+import java.util.List;
+
+import jakarta.persistence.*;
+import lombok.*;
+
+@Entity
+@ToString
+@Getter
+@Setter
+@AllArgsConstructor
+@NoArgsConstructor
+@Builder
+public class Firma implements Serializable {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private int id;
+
+    @SuppressWarnings("unused")
+    private String name;
+
+    @Singular("adresse")
+    @OneToMany(mappedBy="firma")
+    private List<Person> person;
+}

server/src/main/java/org/example/demo/praktikum2/FirmaService.java

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+package org.example.demo.praktikum2;
+
+import jakarta.ejb.Stateless;
+import jakarta.persistence.EntityManager;
+import jakarta.persistence.PersistenceContext;
+
+@Stateless
+public class FirmaService implements FirmaServiceRemote {
+
+    @PersistenceContext
+    private EntityManager em;
+
+    @Override
+    public int speichereFirma(Firma m) {
+        em.persist(m);
+        return m.getId();
+    }
+}

server/src/main/java/org/example/demo/praktikum2/FirmaServiceRemote.java

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+package org.example.demo.praktikum2;
+
+import java.util.List;
+
+import jakarta.ejb.Remote;
+
+@Remote
+public interface FirmaServiceRemote {
+    int speichereFirma(Firma m);
+    // List<Firma> listFirmen();
+}

server/src/main/java/org/example/demo/praktikum2/Person.java

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+package org.example.demo.praktikum2;
+
+import java.io.Serializable;
+import java.util.List;
+
+import jakarta.persistence.*;
+import lombok.*;
+
+@Entity
+@ToString
+@Getter
+@Setter
+@AllArgsConstructor
+@NoArgsConstructor
+@Builder
+public class Person implements Serializable {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private int id;
+
+    @SuppressWarnings("unused")
+    private String name;
+
+    @ManyToOne
+    private Firma firma;
+
+    @Singular("adresse")
+    @OneToMany(mappedBy="person")
+    private List<Adresse> adresse;
+}

server/src/main/java/org/example/demo/praktikum2/PersonService.java

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+package org.example.demo.praktikum2;
+
+import jakarta.ejb.Stateless;
+import jakarta.persistence.EntityManager;
+import jakarta.persistence.PersistenceContext;
+
+@Stateless
+public class PersonService implements PersonServiceRemote {
+
+    @PersistenceContext
+    private EntityManager em;
+
+    @Override
+    public int speicherePerson(Person m) {
+        em.persist(m);
+        return m.getId();
+    }
+}

server/src/main/java/org/example/demo/praktikum2/PersonServiceRemote.java

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+package org.example.demo.praktikum2;
+
+import jakarta.ejb.Remote;
+
+@Remote
+public interface PersonServiceRemote {
+    int speicherePerson(Person m);
+}