Customer.java

package com.example.model;

import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;

import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.MapKey;
import javax.persistence.OneToMany;
import javax.persistence.OneToOne;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;

import org.springframework.beans.factory.annotation.Required;

import com.google.common.base.Strings;

@Entity
@Table(name = "customer")
public class Customer extends BaseObject {

    private static final long serialVersionUID = -6998276217573300147L;

    private Long id;

    private Date createdTimestamp = new Date();

    private String customerNumber;
    private String lastName;
    private String firstName;
    private EmailContact emailContact;
    private Map<PhoneType, PhoneContact> phoneContacts;

    public Customer() {
        super();
    }

    public Customer(String customerNumber) {
        super();
        this.customerNumber = customerNumber;
    }

    public void addPhoneContact(PhoneContact phoneContact) {
        if (phoneContact != null) {
            getPhoneContacts().put( phoneContact.getPhoneType(),
                                    phoneContact);
        }
    }

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    @Column(name = "created_timestamp")
    @Temporal(TemporalType.TIMESTAMP)
    @Required
    public Date getCreatedTimestamp() {
        return createdTimestamp;
    }

    public void setCreatedTimestamp(Date createdTimestamp) {
        this.createdTimestamp = createdTimestamp;
    }

    @Column(name = "customer_number", length = 20, unique = true)
    @Required
    public String getCustomerNumber() {
        return customerNumber;
    }

    public void setCustomerNumber(String customerNumber) {
        this.customerNumber = customerNumber;
    }

    @Column(name = "last_name", length = 100)
    public String getLastName() {
        return lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }

    @Column(name = "first_name", length = 100)
    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    @OneToOne(mappedBy = "customer", cascade = CascadeType.ALL, fetch = FetchType.EAGER)
    public EmailContact getEmailContact() {
        return emailContact;
    }

    public void setEmailContact(EmailContact emailContact) {
        this.emailContact = emailContact;
    }

    @OneToMany(mappedBy = "customer", cascade = CascadeType.ALL, fetch = FetchType.EAGER)
    @MapKey(name = "phoneType")
    public Map<PhoneType, PhoneContact> getPhoneContacts() {
        if (phoneContacts == null) {
            phoneContacts = new HashMap<PhoneType, PhoneContact>();
        }
        return phoneContacts;
    }

    public void setPhoneContacts(Map<PhoneType, PhoneContact> phoneContacts) {
        this.phoneContacts = phoneContacts;
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((customerNumber == null) ? 0 : customerNumber.hashCode());
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;
        Customer other = (Customer) obj;
        if (customerNumber == null) {
            if (other.customerNumber != null)
                return false;
        } else if (!customerNumber.equals(other.customerNumber))
            return false;
        return true;
    }

    @Override
    public String toString() {
        String toString = "Customer [id=" + (id == null ? "null" : id.toString()) + ", createdTimestamp=" + createdTimestamp
                            + ", customerNumber=" + customerNumber + ", lastName=" + lastName + ", firstName=" + firstName + ", emailContact="
                            + (emailContact == null ? "null" : emailContact.getEmailAddress()) + ", phoneContacts=" + toString(phoneContacts)
                            + "]";
        System.out.println(toString);
        return toString;
    }

    private String toString(Map<PhoneType, PhoneContact> phoneContacts) {
        StringBuilder builder = new StringBuilder();
        if (phoneContacts != null) {
            builder.append("[");
            for (Entry<PhoneType, PhoneContact> entry : phoneContacts.entrySet()) {
                if (builder.length() > 1) {
                    builder.append(", ");
                }

                builder.append(entry.getKey()).append("=");
                if (entry.getValue() != null) {
                    builder.append(entry.getValue().getPhoneNumber());
                    if (!Strings.isNullOrEmpty(entry.getValue().getPhoneExtention())) {
                        builder.append("x").append(entry.getValue().getPhoneExtention());
                    }
                }
            }
            builder.append("]");
        }
        return builder.toString();
    }
}