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Posted to dev@ibatis.apache.org by "Jamison (JIRA)" <ib...@incubator.apache.org> on 2006/12/16 07:40:21 UTC

[jira] Created: (IBATIS-377) iterate tag throws NullPointerException when assigned property is null/missing

iterate tag throws NullPointerException when assigned property is null/missing
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                 Key: IBATIS-377
                 URL: http://issues.apache.org/jira/browse/IBATIS-377
             Project: iBatis for Java
          Issue Type: Bug
          Components: SQL Maps
    Affects Versions: 2.1.7
         Environment: N/A
            Reporter: Jamison
            Priority: Minor


When using the iterate tag in a statement if the property assigned is null the following exception is thrown:
Caused by: java.lang.NullPointerException
	at com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.executeQueryWithCallback(GeneralStatement.java:188)
	at com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.executeQueryForList(GeneralStatement.java:123)

I believe that this condition should be detected and a specific exception should be thrown. This would allow users to detect the specifc condition that is causing the problem, a generic NullPointerException is not ideal for that. I would also suggest that null might be treated as an empty collection but I would be afraid that it might break backward compatibility for some people.


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