Make all entity fields private

Encapsulation is better that way (and tere is a getter for all of them
anyway).

src/main/java/org/springframework/samples/petclinic/model/BaseEntity.java

@@ -33,7 +33,7 @@ import javax.persistence.MappedSuperclass;
 public class BaseEntity implements Serializable {
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
-    protected Integer id;
+    private Integer id;
 
     public Integer getId() {
         return id;

src/main/java/org/springframework/samples/petclinic/model/Person.java

@@ -30,11 +30,11 @@ public class Person extends BaseEntity {
 
     @Column(name = "first_name")
     @NotEmpty
-    protected String firstName;
+    private String firstName;
 
     @Column(name = "last_name")
     @NotEmpty
-    protected String lastName;
+    private String lastName;
 
     public String getFirstName() {
         return this.firstName;
@@ -52,5 +52,4 @@ public class Person extends BaseEntity {
         this.lastName = lastName;
     }
 
-
 }

src/main/java/org/springframework/samples/petclinic/owner/Pet.java

@@ -15,11 +15,13 @@
  */
 package org.springframework.samples.petclinic.owner;
 
-import org.springframework.beans.support.MutableSortDefinition;
-import org.springframework.beans.support.PropertyComparator;
-import org.springframework.format.annotation.DateTimeFormat;
-import org.springframework.samples.petclinic.model.NamedEntity;
-import org.springframework.samples.petclinic.visit.Visit;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Date;
+import java.util.HashSet;
+import java.util.LinkedHashSet;
+import java.util.List;
+import java.util.Set;
 
 import javax.persistence.CascadeType;
 import javax.persistence.Column;
@@ -29,16 +31,14 @@ import javax.persistence.JoinColumn;
 import javax.persistence.ManyToOne;
 import javax.persistence.OneToMany;
 import javax.persistence.Table;
-
 import javax.persistence.Temporal;
 import javax.persistence.TemporalType;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.Date;
-import java.util.HashSet;
-import java.util.LinkedHashSet;
-import java.util.List;
-import java.util.Set;
+
+import org.springframework.beans.support.MutableSortDefinition;
+import org.springframework.beans.support.PropertyComparator;
+import org.springframework.format.annotation.DateTimeFormat;
+import org.springframework.samples.petclinic.model.NamedEntity;
+import org.springframework.samples.petclinic.visit.Visit;
 
 /**
  * Simple business object representing a pet.
@@ -64,7 +64,7 @@ public class Pet extends NamedEntity {
     @JoinColumn(name = "owner_id")
     private Owner owner;
 
-    @OneToMany(cascade = CascadeType.ALL, mappedBy="petId", fetch = FetchType.EAGER)
+    @OneToMany(cascade = CascadeType.ALL, mappedBy = "petId", fetch = FetchType.EAGER)
     private Set<Visit> visits = new LinkedHashSet<>();
 
     public void setBirthDate(Date birthDate) {
@@ -104,13 +104,14 @@ public class Pet extends NamedEntity {
 
     public List<Visit> getVisits() {
         List<Visit> sortedVisits = new ArrayList<>(getVisitsInternal());
-        PropertyComparator.sort(sortedVisits, new MutableSortDefinition("date", false, false));
+        PropertyComparator.sort(sortedVisits,
+                new MutableSortDefinition("date", false, false));
         return Collections.unmodifiableList(sortedVisits);
     }
 
     public void addVisit(Visit visit) {
         getVisitsInternal().add(visit);
-        visit.setPetId(this.id);
+        visit.setPetId(this.getId());
     }
 
 }