BAEL-2056

hibernate5/src/main/java/com/baeldung/hibernate/joincolumn/Address.Java

@@ -0,0 +1,19 @@
+package com.baeldung.hibernate.joincolumn;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+
+@Entity
+class Address {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+
+    @Column(name = "ZIP")
+    private String zipCode;
+
+}

hibernate5/src/main/java/com/baeldung/hibernate/joincolumn/Email.java

@@ -0,0 +1,22 @@
+package com.baeldung.hibernate.joincolumn;
+
+import javax.persistence.Entity;
+import javax.persistence.FetchType;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+
+@Entity
+class Email {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "employee_id")
+    private Employee employee;
+
+}

hibernate5/src/main/java/com/baeldung/hibernate/joincolumn/Employee.java

@@ -0,0 +1,21 @@
+package com.baeldung.hibernate.joincolumn;
+
+import java.util.List;
+import javax.persistence.Entity;
+import javax.persistence.FetchType;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.OneToMany;
+
+@Entity
+class Employee {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+
+    @OneToMany(fetch = FetchType.LAZY, mappedBy = "employee")
+    private List<Email> emails;
+
+}

hibernate5/src/main/java/com/baeldung/hibernate/joincolumn/Office.java

@@ -0,0 +1,25 @@
+package com.baeldung.hibernate.joincolumn;
+
+import javax.persistence.Entity;
+import javax.persistence.FetchType;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.JoinColumns;
+import javax.persistence.ManyToOne;
+
+@Entity
+class Office {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumns({
+            @JoinColumn(name="ADDR_ID", referencedColumnName="ID"),
+            @JoinColumn(name="ADDR_ZIP", referencedColumnName="ZIP")
+    })
+    private Address address;
+}