[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-3264) Error in two phase loading will not reveal entity name or key

[Paul Benedict (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-3264?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_30116 ] 

Paul Benedict commented on HHH-3264:
------------------------------------

Some further background on the problem....

BasicPropertyAccessor has very little information available to report anything beyond the class and property that failed. That's understandable, but when the offending property is a part of a commonly used component, it is difficult to narrow which entity had the problem.

In my case, I had an HQL query which eagerly fetched two types of entities that both have the same nested component. A getter method was throwing an exception because an API contract was violated because of bad data. I had to step up through the stack trace until the component's owning entity and identifier was available to the debugger. Once I had that, it was easy to create the patch.

> Error in two phase loading will not reveal entity name or key
> -------------------------------------------------------------
>
>                 Key: HHH-3264
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3264
>             Project: Hibernate3
>          Issue Type: Patch
>          Components: core
>    Affects Versions: 3.2.6
>            Reporter: Paul Benedict
>         Attachments: TwoPaseLoad.patch
>
>
> I had a method getter that was throwing an exception during query execution. I couldn't figure out which entity -- either name or identifier -- that was failing. The best I got was:
> org.hibernate.PropertyAccessException: Exception occurred inside getter of org....myproperty
> at org.hibernate.property.BasicPropertyAccessor$BasicGetter.get(BasicPropertyAccessor.java:148)
> So I created a patch for TwoPhaseLoad which will wrap any nested exception and print out the entity name and identifier.

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