[Hibernate-issues] [Hibernate-JIRA] Commented: (HB-31) Component not null

[<leg...@at...>]

The following comment has been added to this issue:

     Author: Emmanuel Bernard
    Created: Mon, 8 Mar 2004 12:43 AM
       Body:
Henri's right. I attached a pach that was not revelant with the bug description.
I *finally* applied part of my patch on the 2.2 branch: when columns of components are not-null then it throws a PropertyValueException(). Tell me if you want I add this 'not-null for component' feature.

About this instanciate-when-null feature, I'm not sure this is consistent, but I haven't found any sample. I used to need that on a project that migrates from Toplink to Hibernate (Toplink had this feature AFAIK) to prevent NPE on the presentation layer.
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  http://opensource.atlassian.com/projects/hibernate/secure/ViewIssue.jspa?key=HB-31


Here is an overview of the issue:
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        Key: HB-31
    Summary: Component not null
       Type: Improvement

     Status: Unassigned
   Priority: Minor

 Original Estimate: Unknown
 Time Spent: Unknown
  Remaining: Unknown

    Project: Hibernate2
 Components: 
             core

   Assignee: 
   Reporter: Max Rydahl Andersen

    Created: Sat, 3 May 2003 10:18 AM
    Updated: Mon, 8 Mar 2004 12:43 AM

Description:
Component not null
When all properties of component have null value 
Hibernate not instantiate that class. It will be nice to be 
able define will or will not component be instantiated in 
case all properties are null. 

For example if there are no values of 
columns "address_city" and "address_street" but 
address must not be null the instance of Address class 
must be assigned to property Enterprise.address. 

<class name="Enterprise"> 
<property name="name"/> 
<component name="address" class="Address" 
<b>not-null="true"</b>> 
<property name="city" column="address_city"/> 
<property name="street" column="address_street"/> 
</component> 
</class> 

With best regards. 
Dmitry M.ivlev 

http://sourceforge.net/tracker/index.php?func=detail&aid=706054&group_id=40712&atid=428711


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