no comments ?
On 10/24/07, Matthias Wessendorf <matzew_at_apache.org> wrote:
> But...
>
> isn't that silly ?
>
> On 10/24/07, Matthias Wessendorf <matzew_at_apache.org> wrote:
> > Unified EL Spec says:
> >
> > If A is String: return A
> > Otherwise, if A is null: return ""
> > ...
> >
> >
> >
> > On 10/24/07, Matthias Wessendorf <matzew_at_apache.org> wrote:
> > > Hi,
> > >
> > > in com.sun.el.lang.ELSupport.coerceToString()
> > > I noticed that a in case of a null String, the method returns "";
> > >
> > >
> > > The way down.
> > > In the converter:
> > > if (patternExpression != null) {
> > > pattern = (String)
> > > ELUtils.evaluateValueExpression(patternExpression, elContext);
> > > }
> > >
> > > in
> > >
> > > com.sun.faces.el.ELUtils.evaluateValueExpression()
> > > (expectedType == String... for the pattern)
> > >
> > > if (this.expectedType != null) {
> > > return ELSupport.coerceToType(value, this.expectedType);
> > > }
> > >
> > > coerceToType CALLs the coerceToString()
> > >
> > >
> > > public final static String coerceToString(final Object obj) {
> > > if (obj == null) {
> > > return "";
> > > ...
> > > }
> > >
> > > So, that is the reason why "" is returned.
> > >
> > > Stupid question... is that correct ?
> > >
> > > thx,
> > > Matthias
> > >
> > >
> > > On 10/24/07, Matthias Wessendorf <matzew_at_apache.org> wrote:
> > > > Hi,
> > > >
> > > > using JSF RI (1_2_04-p02) + Trinidad 1.2.x
> > > >
> > > > I noticed the following, when a "pattern" is null, like
> > > >
> > > >
> > > > <tr:inputText >
> > > > <tr:convertDateTime pattern="#{null}"/>
> > > > </tr:inputText>
> > > >
> > > > A "default" date is visible.
> > > >
> > > > But with f: (using the RI Tag to create the overridden DateTimeConverter)
> > > > <tr:inputText >
> > > > <f:convertDateTime pattern="#{null}"/>
> > > > </tr:inputText>
> > > >
> > > > nothing is displayed.
> > > >
> > > > The null get's resolved as "" and therefore the DateFormat "parser"
> > > > returns no date.
> > > >
> > > > Someone noticed this too ?
> > > >
> > > >
> > > > --
> > > > Matthias Wessendorf
> > > >
> > > > further stuff:
> > > > blog: http://matthiaswessendorf.wordpress.com/
> > > > mail: matzew-at-apache-dot-org
> > > >
> > >
> > >
> > > --
> > > Matthias Wessendorf
> > >
> > > further stuff:
> > > blog: http://matthiaswessendorf.wordpress.com/
> > > mail: matzew-at-apache-dot-org
> > >
> >
> >
> > --
> > Matthias Wessendorf
> >
> > further stuff:
> > blog: http://matthiaswessendorf.wordpress.com/
> > mail: matzew-at-apache-dot-org
> >
>
>
> --
> Matthias Wessendorf
>
> further stuff:
> blog: http://matthiaswessendorf.wordpress.com/
> mail: matzew-at-apache-dot-org
>
--
Matthias Wessendorf
further stuff:
blog: http://matthiaswessendorf.wordpress.com/
mail: matzew-at-apache-dot-org