[Hibernate-issues] [Hibernate-JIRA] Commented: (HB-156) Qualified one-to-many

[Valentin C. (JIRA) <no...@at...>]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HB-156?page=comments#action_23355 ] 

Valentin Chira commented on HB-156:
-----------------------------------

the where helps you only if your value is hardcoded. but what if for example in the where i wanna write something dinamicaly generated like where CLASS_NAME = "<here insert the class name>" or in the value I wanna have the result of some static method call. Does this work? the idea is that i don't want to load all elements in the relation table but only the ones that have some column value like some dinamic value.thx.

> Qualified one-to-many
> ---------------------
>
>          Key: HB-156
>          URL: http://opensource.atlassian.com/projects/hibernate/browse/HB-156
>      Project: Hibernate2
>         Type: New Feature

>     Versions: 2.0.1
>     Reporter: TURIN ACCOUNT
>     Priority: Minor

>
>
> Ability to add static criteria to what would otherwise be a one-to-many relationship, to
> make it into a one-to-one relationship.  Example:  Account has one-to-many relationship to
> Address by way of address.account_id foreign key.  However, there is only one "primary"
> address for a given account, indicated in the datamodel by address.is_primary = 'Y' for
> exactly one row for any given Account.  Enhancement would let me create a property
> "primaryAddress" on Account that is mapped like a one-to-many except that it also includes
> something like "...AND primary = true".
>  
>  This allows me to obtain an Account object and call getPrimaryAddress and have that SQL
> query the address table "WHERE account_id = ? AND is_primary = 'Y'".
>  

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