[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-3824) OneToOne join by Non-primary key column throws PropertyAccessException when join column is String

[Sharath Reddy (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-3824?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=38074#action_38074 ] 

Sharath Reddy commented on HHH-3824:
------------------------------------

The Item class can be further simplified: 

@Entity
class Item { 
	@Id 
	@GeneratedValue
	Long id; 
	@OneToOne(optional=true)
	@JoinColumn(name = "sku", referencedColumnName = "sku") 
	Inventory inventory; 
}

public void testOneToOneJoinByNonprimaryKeyColumn() {
	Session s = openSession(new JoinCounter(1));
	Transaction tx = s.beginTransaction();

	Inventory inventory = new Inventory();
	inventory.quantity = 1000L;
	inventory.sku = "SKU";

	Item item = new Item();
	item.inventory = inventory;
				
	s.persist(inventory );
	s.persist(item);
	s.flush();
	s.clear();
		
	item = ( Item ) s.get( Item.class, item.id );
	assertNotNull( item );
	assertNotNull( item.inventory );
	assertEquals( "SKU", item.inventory.sku );
	s.flush();
	s.clear();
			
	tx.rollback();
	s.close();
}

The test method now becomes:





> OneToOne join by Non-primary key column throws PropertyAccessException when join column is String
> -------------------------------------------------------------------------------------------------
>
>                 Key: HHH-3824
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3824
>             Project: Hibernate Core
>          Issue Type: Bug
>          Components: query-criteria, query-hql
>    Affects Versions: 3.3.1
>         Environment: Microsoft SQL server 2005, Hibernate 3.3.1
>            Reporter: sathish
>         Attachments: hibernate-3.5.0-beta-3-annotations.patch, hibernate-3.5.0-beta-3-core.patch, trace.txt
>
>
> When i try to join 2 entities by OneToOne using a Non-primary key column,  it throws the following exception:
> org.hibernate.PropertyAccessException: could not get a field value by reflection getter of com.xxx.domain.Inventory.sku
> Caused by: java.lang.IllegalArgumentException: Can not set java.lang.String field com.inwk.estore.server.domain.Inventory.sku to java.lang.Integer
> [Full stacktrace attached]
> sku is the Non-primary key String join column by which im trying to do a OneToOne join between Item and Inventory entity.
> Apparently its trying to interpret Sku as an Integer column. Adding columnDefinition as VARCHAR/String doesn't help either
> Mappings for Item and Inventory are below:
> class Item{
> @Id
> Long id;
> @Column
> String sku;
> //some more properties
> @OneToOne(optional = true)
> @JoinColumn(name = "sku", referencedColumnName = "sku", insertable = false, updatable = false)
> Inventory inventory;
> }
> class Inventory{
> @Id
> Long id
> @Column
> String sku
> @Column
> Long quantity;
> }

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