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Transaction entity

Example | -7 shows an extract of the Transaction class.

Example 12-7 Transaction entity

@Entity

@Table(name="TRANSACT")

public class Transaction implements Serializable {

	@Id

	private String id;

	@Column(name="TRANS_TYPE")

	private String transType;

	@Column(name="TRANS_TIME")

	private Timestamp transTime;

	private BigDecimal amount;

	@ManyToOne

	private Account account;

	......

	// constructor, getter, setter methods

The @Entity annotation defined the class as an entity.

The @Table annotation defines the mapping to the TRANSACT table. Note that the schema name (ITSO) is missing. The other two classes have no @Table annotation because the entity name is identical to the table name.

The @Id annotation defines id as the primary key.

The @Column annotation maps the fields to a table column if the names do not match.

The @ManyToOne annotation defines the m:1 relationship with Account. The mapping defaults to account_id as the column name.

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