[hibernate-issues] [Hibernate-JIRA] Closed: (HHH-1495) Instance should not be created to determine unsaved-value for primitive @Id type

[Steve Ebersole (JIRA)]

     [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-1495?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steve Ebersole closed HHH-1495.
-------------------------------


Closing stale resolved issues

> Instance should not be created to determine unsaved-value for primitive @Id type
> --------------------------------------------------------------------------------
>
>                 Key: HHH-1495
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-1495
>             Project: Hibernate Core
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 3.1.2
>            Reporter: Barry Kaplan
>
> I am having problems with @Id and its unsaved-value. I would like the unsaved-value to default to something without an instance being created. But the code in UnsavedValueFactory.getUnsavedIdentifierValue seems to choose to try to instantiate an instance before it checks whether the @Id is of a primitive type: 
> if ( unsavedValue == null ) {
>          if ( identifierGetter!=null && constructor!=null ) {
>             // use the id value of a newly instantiated instance as the unsaved-value
>             Serializable defaultValue = (Serializable) identifierGetter.get( instantiate(constructor) );
>             return new IdentifierValue( defaultValue );
>          }
>          else if ( identifierGetter != null && (identifierType instanceof PrimitiveType) ) {
>             Serializable defaultValue = ( ( PrimitiveType ) identifierType ).getDefaultValue();
>             return new IdentifierValue( defaultValue );
>          }
>         ... 
> I don't really need the default constructor. If I get rid of it, I get past determining the unsaved-value, but then fail later on in PojoInstantiator.instantiate. 
> (See also http://forum.hibernate.org/viewtopic.php?t=955569)

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