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From Jakob Braeuchi <jbraeu...@gmx.ch>
Subject Re: org.apache.ojb.broker.accesslayer.MtoNCollectionPrefetcher bug
Date Fri, 03 Dec 2004 22:13:21 GMT
hi vladimir,

this bug is also present on the current ojb 1.1
i'll apply your patch asap.

thanks
jakob

Jakob Braeuchi schrieb:
> hi vladimir,
> 
> which version of ojb are you using ?
> 
> jakob
> 
> 
>>org.apache.ojb.broker.accesslayer.MtoNCollectionPrefetcher bug
>>
>>in method
>>
>>     private Criteria buildPrefetchCriteria(Collection ids, 
>>String[] fkCols, String[] itemFkCols,
>>             FieldDescriptor[] itemPkFields)
>>     {
>>         if (fkCols.length == 1) //bug is here
>>         {
>>             return buildPrefetchCriteriaSingleKey(ids, 
>>fkCols[0], itemFkCols[0], itemPkFields[0]); //only first 
>>item's foreign key passed
>>         }
>>         else
>>         {
>>             return buildPrefetchCriteriaMultipleKeys(ids, 
>>fkCols, itemFkCols, itemPkFields);
>>         }
>>
>>     }
>>
>>assumption that if parent table has the only foreign key then 
>>item table has the only FK too is incorrect.
>>
>><collection-descriptor name="recipients" 
>>element-class-ref="nVerge.commons.User"
>>auto-delete="link" auto-retrieve="true" auto-update="link"
>>indirection-table="hot_folder_recipients">
>>  <fk-pointing-to-this-class column="hot_folder_id"/>
>>  <fk-pointing-to-element-class column="user_login"/>
>>  <fk-pointing-to-element-class column="user_network_id"/> 
>><!-- this FK is not put into where criteria -->
>></collection-descriptor>
>>
>>Quickfix for this is  if (fkCols.length == 1 && 
>>itemFkCols.length == 1)
>>
>>
>>--
>>Best Regards,
>>Vladimir Kirichenko
>>
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> 
> 

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