[ http://issues.apache.org/jira/browse/IBATISNET-136?page=all ]
Roberto Rabe closed IBATISNET-136:
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Resolution: Fixed
Thanks for the catch!
In SVN...
> Documentation bug: Data Mapper Guide 1.2.1.pdf nullValue in <result>
> --------------------------------------------------------------------
>
> Key: IBATISNET-136
> URL: http://issues.apache.org/jira/browse/IBATISNET-136
> Project: iBatis for .NET
> Type: Bug
> Components: Documentation
> Versions: DataMapper 1.2.1
> Environment: .Net
> Reporter: Norman Katz
>
> 3.5.3.7. nullValue
> The nullValue attribute can be set to any valid value (based on property
> type). The nullValue attribute is used
> to specify an outgoing null value replacement. What this means is that when
> the value is detected in the object
> property, a NULL will be written to the database (the opposite behavior of an
> inbound null value replacement).
> This allows you to use a "magic" null number in your application for types
> that do not support null values (such
> as int, double, float). When these types of properties contain a matching
> null value (say, -9999), a NULL
> will be written to the database instead of the value.
> If your database has a NULLABLE column, but you want your application to
> represent NULL with a constant
> value, you can specify it in the Result Map as shown in Example 3.25.
> This seems close to a verbatim copy of the nullValue section of <parameter>
> (3.4.2.6.). I believe it should actually state one of the following:
> a) ... when a null value is detected in a result returned from the query, the
> replacement value will be stored in the corresponding result property.
> or
> b) ... when the value is detected in the result returned from the query, a
> null will be stored in the corresponding result property.
> Nothing is being "written to the database" when you're in the context of a
> <result> so I believe your current text is inaccurate and this paragraph
> should be revised.
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