[hibernate-issues] [Hibernate-JIRA] Resolved: (HHH-5171) Allow usage of standalone @JoinFormula annotation

[Sharath Reddy (JIRA)]

     [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-5171?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sharath Reddy resolved HHH-5171.
--------------------------------

    Resolution: Fixed

> Allow usage of standalone @JoinFormula annotation
> -------------------------------------------------
>
>                 Key: HHH-5171
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5171
>             Project: Hibernate Core
>          Issue Type: Improvement
>          Components: annotations
>    Affects Versions: 3.6
>            Reporter: Sharath Reddy
>            Assignee: Sharath Reddy
>             Fix For: 3.6
>
>
> If there is a single-column join (based on formula) between 2 entities, it is overkill to wrap the @JoinFormula within a @JoinColumnsOrFormulas annotation: 
> @ManyToOne
> @JoinColumnsOrFormulas(
> { @JoinColumnOrFormula(formula=@JoinFormula(value="SUBSTR(product_idnf, 1, 3)", referencedColumnName="product_idnf")) })
> The above annotation is powerful, because it gives us the flexibility of using an arbitrary combination of columns and formulas for the join, but in this case it is redundant.
> If would be easier to just specify like this:
> @ManyToOne
> @JoinFormula(value="SUBSTR(product_idnf, 1, 3)", referencedColumnName="product_idnf")) })

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