@Entity
@Table(name = "Files")
public class ItemFile implements Serializable {

    @Id @GeneratedValue(strategy = GenerationType.TABLE, generator="Files")
    @TableGenerator(name="Files", allocationSize=50)    
    private Long id;
    @Lob @Basic(fetch=FetchType.LAZY)
    private byte[] fileData;

    public ItemFile() {}

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

    public byte[] getFileData() {return fileData;}
    public void setFileData(byte[] fileData) {this.fileData = fileData;}

    public void setFileData(File file) throws IOException {
        FileInputStream in = new FileInputStream(file);
        this.fileData = new byte[in.available()];
        in.read(this.fileData);
        in.close();
    }
}