[hibernate-issues] [Hibernate-JIRA] Created: (HHH-5007) Using <formula> within Composite Element inside Collection

[Hepoi Ko (JIRA)]

Using <formula> within Composite Element inside Collection
----------------------------------------------------------

                 Key: HHH-5007
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5007
             Project: Hibernate Core
          Issue Type: Patch
          Components: core
    Affects Versions: 3.5.0-CR-2
         Environment: 3.5.0-CR2, AS400, Component
            Reporter: Hepoi Ko
            Priority: Minor
         Attachments: JoinWalker.java

I was one of the user who use Hibernate in a legacy database schema, and always had a issue on using composite-key (and formula) inside collection. I was able to modify the hibernate source (from 3.3.2) to overcome such issue. I am hoping the new version 3.5.0 would even fix this problem. Anyway, I just leave the fix information here, hope it would help.

In /org/hibernate/loader/JoinWalker.java

Line 641: String[] aliasedLhsColumns = StringHelper.qualify(alias, lhsColumns); 

Modify with these:

  String[] fullAliasedLhsColumns = persister.getElementColumnNames(alias);
  String[] aliasedLhsColumns = ArrayHelper.slice(fullAliasedLhsColumns, begin, length); 

Without above change I would get NullPointerException on a mapping as

....
<set name="auditRecords" table="OEP40A" order-by="ADAT40 DESC, ATIM40 DESC"
	            mutable="false" inverse="true" outer-join="true">
        <key>
               <column name="CONO40"></column>
               <column name="ORDN40"></column>
        </key>
        <composite-element class="com.ricoh.erp.order.domain.OrderAudit">
  	                <property name="userId">
 	                    <column name="AUSR40"></column>
 	                </property>
 	                <property name="workstationId">
 	                    <column name="AWRK40"></column>
  	                </property>
	                <many-to-one name="customerEntry" not-found="ignore">
  	                    <formula>CONO40</formula> <!-- NullPointerException on this line -->
 	                    <column name="CUSN40"></column>
  	                    <column name="DSEQ40"></column>
  	                </many-to-one>
       </composite-element>

With Best Regards,


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