hi all,
did some hard core research, and found the following bug in the
XMLFormTransformer.java:
the "unrolling" of the "recorded" tags like "itemset" and "repeat" is
only done if:
class XMLFormTransformer .... {
...
Object _value ;
...
...
void unrollItemSetTag( DocumentFragment aFragment ) {
...
while ( ... )
..
if ( _value != null ) {
/* do the stream of the fragment */
}
}
...
...
now it comes:
_value is set by Form.getValue( xpath ), which is the @ref Attribute of
according the xmlform element.
I think the _value null-checking is done in order to test that a valid
form control was found before, but _value gets also null if there is a
correct field in the object but the bean property is not initialized for
instance String or List, like that:
class Bean {
Map allLangues = ...
String language;
public Set allLanguages( ) {
return allLanguages.entrySet( );
}
public String getLanguage( ) { ... }
public void setLanguage( String value ) { ... }
}
now given this example, if you to the following control:
<xf:selectOne ref="language" >
<xf:itemset nodeset="/allLanguages">
<xf:caption ref="value" />
<xf:value ref="key" />
</xf:itemset>
</xf:selectOne>
this will never display an initialized listbox, as:
inside XMLFormTransformer:
_value = Form.getValue( "language" );
will be null, when the form is in the start phase.
so I propose changing the _value checking to a boolean state variable.
like:
boolean haveRefBoundElement = false;
and after doing:
in "startELementSimpleFIeld( ... ) "
value_ = form.getValue( ref )
haveRefBoundElement = true;
and then change the streaming part of the
void unrollItemSetTag( DocumentFragment docFragment )
....
while ( ... ) {
..
if ( haveRefBoundElement )
{
// stream back the recorder repeat content
DOMStreamer streamer = new DOMStreamer( this, this);
streamer.stream( docFragment );
}
..
}
-- Jakob
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