[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-3831) composite-id + generator +foreign

[Sandeep Vaid (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-3831?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=32708#action_32708 ] 

Sandeep Vaid commented on HHH-3831:
-----------------------------------

I also found one more thing...
 Say productid='1'
  While trying to get the HashCode(), it goes to 
AbstractComponentTuplizer :
public Object getPropertyValue(Object component, int i) throws HibernateException {
		return getters[i].get( component ); //on this line it throes exception
	}

this getter array only contains my 2 fields viz. useType and startTimeStamp... It doesn't contain the productId (which is generated foreign key)... 
Now i guess when it tries to find productId=1 in getter at 0th index, it doesn't find that and throwsexception....

> composite-id + generator +foreign
> ---------------------------------
>
>                 Key: HHH-3831
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3831
>             Project: Hibernate Core
>          Issue Type: Bug
>          Components: core
>            Reporter: Sandeep Vaid
>         Attachments: ProductAndProductBasicDetails.txt, ProductAndProductBasicError.txt
>
>
> I have 2 classes viz. Product and ProductBasic which has one-to-one relationship.
> Product is mapped to a table PRODUCT which has PRODUCTID as PK.
> ProductBasic is mapped to a table PRODUCTBASIC which has PRODUCTID,USETYPE and STARTTTIMESTAMP as composite key. Also PRODUCTID
> is the foreign key referencing PRODUCT table...
> When i am saving Product (with cascade for ProductBasic):
> For Product, it's taking persister.identifierType as org.hibernate.type.CustomType
> For ProductBasic, it's taking persister.identifierType as org.hibernate.type.ComponentType
> Assume productId='1'
> When i call session.save(product),
> a) For Product: it tries to find hashmap of id=1 using org.hibernate.type.StringType.getHashCode() which comes out to be 49 (ASCII)..
> b) For ProductBasic: it tries to find hashmap of id=1 using org.hibernate.type.ComponentType.getHashCode() and throws exception:
> org.hibernate.PropertyAccessException: IllegalArgumentException occurred calling getter of com.tietoenator.lis.db.impl.product.bo.CompProductBasicBO.useType
> Does it treating ProductBasic as component because it's productId value depends upon Product.productId? Even if it treats
> ProductBasic as component, why it is not fetching the proper hashCode() and throwing exception? 

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