Hibernate nao traz resultados da pesquisa

/**
 *
 * @author Paulo Henrique Peres <[email removido]>
 */
@Entity
@Table(name="SHELF_MODEL")
public class ShelfModel implements Serializable {
    @Id()
    @Column(name="NAME")
    private String name;

    @Column(name="MANUFACTURER", nullable=false)
    private String manufacturer;

    @OneToMany(mappedBy = "shelfModel", fetch=FetchType.LAZY)
    private List<Shelf> shelves = new ArrayList<Shelf>();

    public ShelfModel() {
    }

    public ShelfModel(String name) {
        this.name = name;
    }
    
    public ShelfModel(String name, String manufacturer) {
        this.name = name;
        this.manufacturer = manufacturer;
    }

    public String getManufacturer() {
        return manufacturer;
    }

    public void setManufacturer(String manufacturer) {
        this.manufacturer = manufacturer;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public List<Shelf> getShelves() {
        return shelves;
    }

    public void setShelves(List<Shelf> shelves) {
        this.shelves = shelves;
    }
    
}

/**
 *
 * @author Paulo Henrique Peres <[email removido]>
 */
@Entity
@Table(name="SHELF")
public class Shelf implements Serializable {

    @Id()
    @Column(name="IP")
    private String ip;
    
    @Column(name="NAME")
    private String name;

    @ManyToOne()
    private City city;

    @ManyToOne    
    private ShelfModel shelfModel;

    public Shelf() {
    }

    public Shelf(String ip) {
        this.ip = ip;
    }

    public City getCity() {
        return city;
    }

    public void setCity(City city) {
        this.city = city;
    }

    public String getIp() {
        return ip;
    }

    public void setIp(String ip) {
        this.ip = ip;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public ShelfModel getShelfModel() {
        return shelfModel;
    }

    public void setShelfModel(ShelfModel shelfModel) {
        this.shelfModel = shelfModel;
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        final Shelf other = (Shelf) obj;
        if ((this.ip == null) ? (other.ip != null) : !this.ip.equals(other.ip)) {
            return false;
        }
        return true;
    }

public ShelfModel getModelShelfByName(String model) {
        Criteria criteria = this.session.createCriteria(Shelf.class);
        criteria.add(Expression.ilike("name", model, MatchMode.EXACT));
        return (ShelfModel) criteria.uniqueResult();
    }

ShelfModel shelfModel = new ShelfModel("MILEGATE2500");                
        System.out.println(shelfModel.getShelves().size());