Hi,
I understand that requirement but isn't it EL coercion task ? : https://javaserverfaces-spec-public.dev.java.net/issues/show_bug.cgi?id=152 and from UISelectMany.validateValue JavaDoc: " ...Before comparing each option, coerce the option value type to the type of this component's value following the Expression Language coercion rules ..." Regards, Martin Kočí Jakob Korherr píše v Pá 27. 08. 2010 v 15:31 +0200: > Hi Martin, > > The purpose of this conversion is that the value of the SelectItems > may be a String, but the real (already converted) value of the > UISelectMany may be something else, e.g. Float. Imagine the following > scenario: > > <h:selectManyCheckbox value="#{myBean.inputFloatArray}"> > <f:selectItem itemValue="1.1" /> > <f:selectItem itemValue="1.2" /> > <f:selectItem itemValue="1.3" /> > </h:selectManyCheckbox> > > The itemValues of all SelectItems are Strings, but the UISelectMany > points to a property which is of type Float[]. Now because of the fact > that all Strings can be converted into Floats, this scenario must > work. > > If you now take a look at _SelectItemsUtil.matchValue(), you can see > that not the component's value, but the value of the SelectItem is > converted via the _ValueConverter: > > SelectItem item = selectItemsIter.next(); > Object itemValue = item.getValue(); > if(converter != null && itemValue instanceof String) > { > itemValue = converter.getConvertedValue(context, > (String)itemValue); > } > > and then matched against the real value (again which is e.g. Float): > > if (value==itemValue || value.equals(itemValue)) > { > return true; > } > > Furthermore the converter has to be invoked with the wrapped String in > a String[], because UISelectMany.getConvertedValue() needs a > submittedValue of type String[]. > > Is this clear for you or should I explain it in more detail? > > Regards, > Jakob > > 2010/8/27 Martin Koci <martin.k...@aura.cz> > Hi, > > > what is the purpose of _SelectItemsUtil._ValueConverter in > UISelectMany.validateValue(FacesContext, Object) ? > > Two weird things: > > 1) it wraps value into new String[] { value } > 2) it calls UISelectMany.this.getConvertedValue and it leads > to > Rendered.getConvertedValue call > > I don't see sence in call of > UISelectMany.this.getConvertedValue > because this already done: we are in method validateValue here > and > conversion with Renderer.getConvertedValue is done already. > This causes > calls to Renderer.getConvertedValue during process validation > which is > unintented I think. > > > Regards, > > Martin Kočí > > > > > > -- > Jakob Korherr > > blog: http://www.jakobk.com > twitter: http://twitter.com/jakobkorherr > work: http://www.irian.at
