[jira] Created: (TAP5-1227) Binding a parameter whose type is primitive to null results in a difficult to understand NullPointerException

[Howard M. Lewis Ship (JIRA)]

Binding a parameter whose type is primitive to null results in a difficult to 
understand NullPointerException
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                 Key: TAP5-1227
                 URL: https://issues.apache.org/jira/browse/TAP5-1227
             Project: Tapestry 5
          Issue Type: Bug
          Components: tapestry-core
    Affects Versions: 5.2.0
            Reporter: Howard M. Lewis Ship


NPE is appropriate, but a blank message is not.  The message should be 
something like:

"Parameter com.example.components.Layout.section is primitive type int and may 
not be bound to null. You should convert this parameter to type 
java.lang.Integer."

Possibly we could get some similar effect by automatically forcing allowNull to 
false for  primitive type parameters.

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