[MYFACES-583] "Error during model data update" using selectManyCheckbox - ASF JIRA

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I have a selectManyCheckBox backed by an Integer array property. When the form is submitted, I get an exception thrown when updating the model:

Caused by: javax.servlet.jsp.el.ELException: Attempt to coerce a value of type "[Ljava.lang.Object;" to type "[Ljava.lang.Integer;"

It seems that the property is trying to be set with an Object array, rather than Integer array.

I have tracked the problem down to _SharedRendererUtils:

...
{
//Object array
int len = submittedValue.length;
Object[] convertedValues = new Object[len];
for (int i = 0; i < len; i++)

{ convertedValues[i] = converter.getAsObject(facesContext, component, submittedValue[i]); }

return convertedValues;
}
..

Given that we know what type the array should be, a suggested patch for the code is:

int len = submittedValue.length;
ArrayList convertedValues = new ArrayList(len);
for (int i = 0; i < len; i++)

{ convertedValues.add(i, converter.getAsObject(facesContext, component, submittedValue[i])); }

return convertedValues.toArray((Object[]) Array.newInstance(arrayComponentType, len));

Peter