jpa-2.0 - 関係テーブルにデータをロードするときの JPA StackOverflowError

Question

3 つのテーブルへのロードを実装しようとしています (マッピングの問題の始まり)

Products:

@Entity
@Table(name = "products")
public class Product implements Serializable {
    @Id
    @Column(name = "id")
    private Integer id;

    @OneToMany(mappedBy = "property", fetch = FetchType.LAZY)
    private Collection<ProductProperty> productPropertyCollection;

    ...
}

Properties:

@Entity
@Table(name = "properties")
public class Property implements Serializable {
    @Id
    @Column(name = "id")
    private Integer id;

    @OneToMany(mappedBy = "property", fetch = FetchType.LAZY)
    private Collection<ProductProperty> productPropertyCollection;

    ...
}

Product_Property

@Entity
@Table(name = "product_property")
public class ProductProperty implements Serializable {
    @EmbeddedId
    protected ProductPropertyPK productPropertyPK;

    @MapsId(value = "propertyId")
    @JoinColumn(name = "property_id", referencedColumnName = "id")
    @ManyToOne()    
    private Property property;

    @MapsId(value = "productId")
    @JoinColumn(name = "product_id", referencedColumnName = "id")
    @ManyToOne()
    private Product product;

    ...
}

@Embeddable
public class ProductPropertyPK implements Serializable {
    @Basic(optional = false)
    @NotNull
    @Column(name = "product_id", insertable = false, updatable = false)
    private int productId;
    @Basic(optional = false)
    @NotNull
    @Column(name = "property_id", insertable = false, updatable = false)
    private int propertyId;
    ...
}

1、10、100 個の製品では問題なく動作しますが、1000 個以上の製品ではエラーがスローされるため、どこかにエラーがあります。

Caused by: java.lang.StackOverflowError
    at java.util.HashMap.getEntry(HashMap.java:443)
    at java.util.HashMap.containsKey(HashMap.java:434)
    at java.util.HashSet.contains(HashSet.java:201)
    at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.discoverAndPersistUnregisteredNewObjects(UnitOfWorkImpl.java:4141)
    at org.eclipse.persistence.mappings.ObjectReferenceMapping.cascadeDiscoverAndPersistUnregisteredNewObjects(ObjectReferenceMapping.java:938)
    at org.eclipse.persistence.mappings.ObjectReferenceMapping.cascadeDiscoverAndPersistUnregisteredNewObjects(ObjectReferenceMapping.java:916)
    at org.eclipse.persistence.internal.descriptors.ObjectBuilder.cascadeDiscoverAndPersistUnregisteredNewObjects(ObjectBuilder.java:1964)
    at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.discoverAndPersistUnregisteredNewObjects(UnitOfWorkImpl.java:4178)
    at org.eclipse.persistence.mappings.CollectionMapping.cascadeDiscoverAndPersistUnregisteredNewObjects(CollectionMapping.java:426)
    at org.eclipse.persistence.internal.descriptors.ObjectBuilder.cascadeDiscoverAndPersistUnregisteredNewObjects(ObjectBuilder.java:1964)
    at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.discoverAndPersistUnregisteredNewObjects(UnitOfWorkImpl.java:4178)
    at org.eclipse.persistence.mappings.ObjectReferenceMapping.cascadeDiscoverAndPersistUnregisteredNewObjects(ObjectReferenceMapping.java:938)
    at org.eclipse.persistence.mappings.ObjectReferenceMapping.cascadeDiscoverAndPersistUnregisteredNewObjects(ObjectReferenceMapping.java:916)
    at org.eclipse.persistence.internal.descriptors.ObjectBuilder.cascadeDiscoverAndPersistUnregisteredNewObjects(ObjectBuilder.java:1964)
    at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.discoverAndPersistUnregisteredNewObjects(UnitOfWorkImpl.java:4178)
    at org.eclipse.persistence.mappings.CollectionMapping.cascadeDiscoverAndPersistUnregisteredNewObjects(CollectionMapping.java:426)
    at org.eclipse.persistence.internal.descriptors.ObjectBuilder.cascadeDiscoverAndPersistUnregisteredNewObjects(ObjectBuilder.java:1964)
    at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.discoverAndPersistUnregisteredNewObjects(UnitOfWorkImpl.java:4178)
    at org.eclipse.persistence.mappings.ObjectReferenceMapping.cascadeDiscoverAndPersistUnregisteredNewObjects(ObjectReferenceMapping.java:938)
    at org.eclipse.persistence.mappings.ObjectReferenceMapping.cascadeDiscoverAndPersistUnregisteredNewObjects(ObjectReferenceMapping.java:916)
    at org.eclipse.persistence.internal.descriptors.ObjectBuilder.cascadeDiscoverAndPersistUnregisteredNewObjects(ObjectBuilder.java:1964)
    at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.discoverAndPersistUnregisteredNewObjects(UnitOfWorkImpl.java:4178)
...

ProductProperty を作成しているときは、 と を設定しproduct、とで双方向のコレクションに追加しています。propertyProductPropertyProductProperty

どこで間違いを犯すことができますか？