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https://issues.apache.org/jira/browse/IBATISNET-232?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gilles Bayon closed IBATISNET-232.
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Resolution: Fixed
Fix Version/s: DataMapper 1.6.2
Assignee: Gilles Bayon
Patch apply
Thanks
In SVN
> Nested left joins with group by cause NPE when two subsequent levels have
> null values
> -------------------------------------------------------------------------------------
>
> Key: IBATISNET-232
> URL: https://issues.apache.org/jira/browse/IBATISNET-232
> Project: iBatis for .NET
> Issue Type: Bug
> Components: DataMapper
> Affects Versions: DataMapper 1.6.1
> Reporter: Spyros Oikonomopoulos
> Assignee: Gilles Bayon
> Fix For: DataMapper 1.6.2
>
> Attachments:
> DataMapper.MappedStatements.PropertStrategy.GroupByStrategy.patch
>
>
> Region (region_id, name) values: (1, 'reg1') (2, 'reg2')
> State (state_id, region_id, name) values: (1, 1, 'state1')
> City (city_id, region_id, state_id, name) values (1,1,1,'city1')
> A nested group with left joins will create the following rows:
> 1 reg1 --- 1 1 state 1 --- 1 1 1 city1
> 2 reg2 --- null --- null
> Now during construction of the object hierarchy iBatis, for the second row
> tries to set the "cities" collection of the state object, which unfortunately
> is null, so an NPE is raised.
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