JSR-252 Issue #69: Permit the passing of a null value to SelectItem.setValue().
A SelectItem with null value adds message Value is not valid
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Key: MYFACES-1759
URL: https://issues.apache.org/jira/browse/MYFACES-1759
Project: MyFaces Core
Issue Type: Bug
Components: JSR-252
Environment: tomcat 6, myfaces-1.2.1-SNAPSHOT (05 nov 2007)
Reporter: Leonardo Uribe
The following code:
<h:selectOneListbox id="si" binding="#{selectItemBean.component}"
value="#{selectItemBean.value}">
<f:selectItems value="#{selectItemBean.list}"/>
</h:selectOneListbox>
If the list is created as is:
public List<SelectItem> getList()
{
List<SelectItem> lista = new ArrayList<SelectItem>();
lista.add(new SelectItem(null, "NULL 2");
lista.add(new SelectItem("", "EMPTY"));
lista.add(new SelectItem("1", "Value 1"));
lista.add(new SelectItem("2", "Value 2"));
return lista;
}
Render this:
<select id="form:si" name="form:si" size="4">
<option value="" selected="selected">NULL 2</option>
<option value="" selected="selected">EMPTY</option>
<option value="1">Value 1</option>
<option value="2">Value 2</option>
</select>
null and empty String values are annotated equally.
The problem is that JSF RI assumes value="" as null when converting the value,
but myfaces assumes empty String.
The submited value is an empty String, decoded on JSF RI as null and on Myfaces
as empty String.
JSF RI does not show this item as selected but set the value
correctly to null. Myfaces sends a validation message "Validation Error: Value
is not valid".
To be according to the spec, the preferred behavior is that JSF RI shows, so
it's necessary a correction on myfaces to be compatible.
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