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libraries-data/ebean/src/main/java/com/baeldung/ebean/model/BaseModel.java

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+package com.baeldung.ebean.model;
+
+import java.time.Instant;
+
+import javax.persistence.Id;
+import javax.persistence.MappedSuperclass;
+import javax.persistence.Version;
+
+import io.ebean.annotation.WhenCreated;
+import io.ebean.annotation.WhenModified;
+
+@MappedSuperclass
+public abstract class BaseModel {
+
+    @Id
+    protected long id;
+    
+    @Version
+    protected long version;
+    
+    @WhenCreated
+    protected Instant createdOn;
+    
+    @WhenModified
+    protected Instant modifiedOn;
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public Instant getCreatedOn() {
+        return createdOn;
+    }
+
+    public void setCreatedOn(Instant createdOn) {
+        this.createdOn = createdOn;
+    }
+
+    public Instant getModifiedOn() {
+        return modifiedOn;
+    }
+
+    public void setModifiedOn(Instant modifiedOn) {
+        this.modifiedOn = modifiedOn;
+    }
+
+    public long getVersion() {
+        return version;
+    }
+
+    public void setVersion(long version) {
+        this.version = version;
+    }
+    
+}

libraries-data/ebean/src/main/java/com/baeldung/ebean/model/Customer.java

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+package com.baeldung.ebean.model;
+
+import javax.persistence.CascadeType;
+import javax.persistence.Entity;
+import javax.persistence.OneToOne;
+
+@Entity
+public class Customer extends BaseModel {
+
+    public Customer(String name, Address address) {
+        super();
+        this.name = name;
+        this.address = address;
+    }
+
+    private String name;
+
+    @OneToOne(cascade = CascadeType.ALL)
+    Address address;
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Address getAddress() {
+        return address;
+    }
+
+    public void setAddress(Address address) {
+        this.address = address;
+    }
+
+    @Override
+    public String toString() {
+        return "Customer [id=" + id + ", name=" + name + ", address=" + address + "]";
+    }
+
+}