[jira] Commented: (OPENJPA-1748) delete error when using constant joins with fetchtype lazy

["Catalina Wei (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/OPENJPA-1748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12899198#action_12899198 ] 

Catalina Wei commented on OPENJPA-1748:
---------------------------------------

Michel,
To reproduce the problem, could you provide the jave source code for Table1 and Table2 classes ?
Thanks.

> delete error when using constant joins with fetchtype lazy
> ----------------------------------------------------------
>
>                 Key: OPENJPA-1748
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-1748
>             Project: OpenJPA
>          Issue Type: Bug
>    Affects Versions: 1.2.1
>         Environment: - windows glassfish/mysql
> - linux glassfish/mysql
> - linux weblogic/oracle
>            Reporter: Michel Ganguin
>            Priority: Critical
>
> Entity (fetch lazy, without cascade): 
> @Entity 
> @Table(name="Table1") 
> public class Table1  { 
>     @ManyToOne(optional = true, fetch = FetchType.LAZY) 
>     @JoinColumns({ 
>         @JoinColumn(name="FK" referencedColumnName="PK1"), 
>         @JoinColumn(name="Table2.PK2" referencedColumnName="'a'") 
>     }); 
>     private Table2 table2; 
> } 
> I want to remove an entry: 
> Table1 t1 = entityManager.find(Table1.class, "table1Key"); 
> entityManager.remove(t1); 
> but this raises an exception because the parameter 'a' (from referencedColumnName) is missing. 
> org.apache.openjpa.persistence.PersistenceException: No value specified for parameter 2. {prepstmnt 1615708154 SELECT t1.* FROM Table1 t0 INNER JOIN Table2 t1 ON t0.FK = t1.PK1 AND ? = t1.PK2 WHERE t0.PK = ? [params=(String) table1Key]} [code=0, state=22023] 
> as workaround it works without errors if I change fetchtype to eager, but in my case this could have a great performance overhead.

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