Hibernate version: 3.2

I have two entites like One is PurchaseOrder & OrderLineItems. PurchaseOrder contains List of OrderLineItems with OneToMany relationship. I haven't specified any FetchType attribute to this mapping. Though there is a correct data in database some time the List of OrderLineitem comes Empty.

The mapping code I have written is

Code in PurchaseOrder Entity

@OneToMany (cascade = CascadeType.ALL,mappedBy = "purchaseOrder")
private List<OrderLineItem> lineItem;

Code in OrderLineItem Entity

@ManyToOne
private PurchaseOrder purchaseOrder;

But if i specify the FetchType= EAGER then the List will be Populated.

Please help me to resolve this issue.

Thanks in advance,
Amit