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Customer entity

Example | -6 shows an extract of the Customer class.

Example 12-6 Customer entity

import ......;

@Entity

public class Customer implements Serializable {

	@Id

	private String ssn;

	private String title;

	@Column(name="FIRST_NAME")

	private String firstName;

	@Column(name="LAST_NAME")

	private String lastName;

	@ManyToMany(mappedBy="customerCollection")

	private Set<Account> accountCollection;

	......

	// constructor, getter, setter methods

The @Entity annotation defined the class as an entity.

The @Id annotation defines ssn as the primary key.

The @Column annotation maps the fields to a table column if the names do not match. Note that by convention, columns names with underscores (FIRST_NAME) create nice Java field names (firstName).

The @ManyToMany annotation defines the m:m relationship with Account. The mapping is defined in the Account entity.

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