New Core bug? FetchType.Eager does not work on collection w
I'm trying to eagerly load a Set of an entity that has an EmbeddedId. When I call EntityManager.find, it does not load the Set. When I change the embeddedId to be a regular Id, all is well. Am I doing something wrong, or should I log a new bug?
I'm using Entity Manager 3.2.0 CR2, with Hibernate Core 3.2.0 CR4.
Card:
@Entity
public class Card implements Serializable {
@Id
private String id;
@OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER, mappedBy = "card")
private Set<CardField> fields;
public Card(String id) {
this();
this.id = id;
}
Card() {
fields = new HashSet<CardField>();
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public void addField(Card card, Key key) {
fields.add(new CardField(card, key));
}
@Override
public int hashCode() {
final int PRIME = 31;
int result = 1;
result = PRIME * result + ((id == null) ? 0 : id.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
System.out.println("Equals invoked");
System.exit(0);
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
final Card other = (Card) obj;
if (id == null) {
if (other.id != null)
return false;
} else if (!id.equals(other.id))
return false;
return true;
}
}
CardField:
@Entity
public class CardField implements Serializable {
private static final long serialVersionUID = 1L;
private PrimaryKey primaryKey;
private String id;
CardField(Card card, Key key) {
this.primaryKey = new PrimaryKey(card, key);
}
CardField() {
}
@Override
public int hashCode() {
final int PRIME = 31;
int result = 1;
result = PRIME * result + ((primaryKey == null) ? 0 : primaryKey.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
System.out.println("Equals invoked");
System.exit(0);
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
final CardField other = (CardField) obj;
if (primaryKey == null) {
if (other.primaryKey != null)
return false;
} else if (!primaryKey.equals(other.primaryKey))
return false;
return true;
}
@EmbeddedId
public PrimaryKey getPrimaryKey() {
return primaryKey;
}
public void setPrimaryKey(PrimaryKey primaryKey) {
this.primaryKey = primaryKey;
}
// BEGIN Workaround until issue is resolved.
// http://opensource.atlassian.com/projects/hibernate/browse/EJB-225
@ManyToOne
@JoinColumn(insertable=false, updatable=false)
public Card getCard() {
return primaryKey.getCard();
}
public void setCard(Card card) {
primaryKey.setCard(card);
}
@ManyToOne
@JoinColumn(insertable=false, updatable=false)
public Key getKey() {
return primaryKey.getKey();
}
public void setKey(Key key) {
primaryKey.setKey(key);
}
// END Workaround
}
Changing CardField to use regular Id makes the Set in Card load eagerly:
@Entity
public class CardField implements Serializable {
private static final long serialVersionUID = 1L;
private PrimaryKey primaryKey;
private String id;
private Card card;
private Key key;
CardField(Card card, Key key) {
this.primaryKey = new PrimaryKey(card, key);
this.card = card;
this.key = key;
this.id = card.getId() + key.getId();
}
CardField() {
}
@Override
public int hashCode() {
final int PRIME = 31;
int result = 1;
result = PRIME * result + ((primaryKey == null) ? 0 : primaryKey.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
System.out.println("Equals invoked");
System.exit(0);
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
final CardField other = (CardField) obj;
if (primaryKey == null) {
if (other.primaryKey != null)
return false;
} else if (!primaryKey.equals(other.primaryKey))
return false;
return true;
}
//@EmbeddedId
@Transient
public PrimaryKey getPrimaryKey() {
return primaryKey;
}
public void setPrimaryKey(PrimaryKey primaryKey) {
this.primaryKey = primaryKey;
}
@Id
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
@ManyToOne(optional = false)
@JoinColumn(name="cardId")
public Card getCard() {
return card;
}
public void setCard(Card card) {
this.card = card;
}
@ManyToOne(optional = false)
@JoinColumn(name="keyId")
public Key getKey() {
return key;
}
public void setKey(Key key) {
this.key = key;
}
}