Question about rendered attribute

[Richard Green]

Ok here is the situtation:

Backing Bean

.....
....
...
private Date end;
 
public Date getEnd() {
return someUtiltyClass.checkNotNull(end);
}
 
public boolean hasEnd(){
return (end==null);
}
 
......
.....
.....

Utility class

public Date checkNotNull(Date d){
if (d==null) throw DateNotFoundException(""); 
        return d;
}

JSF page

<h:outputText value="#{departmentBean.end}" />

throws a DateNotFoundException. I dont want this to happen - I want to display "" if the end date is null.

So, I tried

<h:outputText rendered="#{departmentBean.hasEnd}" value="#{departmentBean.end}" />

and that didn't work.

How do I go about achieving this without making a change to the checkNotNull() function in my utility class

[ May 21, 2006: Message edited by: Mike Corleone ]

[ May 21, 2006: Message edited by: Mike Corleone ]
[ May 21, 2006: Message edited by: Mike Corleone ]

[Richard Green]

anyone?

[Adeel Ansari]

Originally posted by Mike Corleone:
I dont want this to happen - I want to display "" if the end date is null.

So, why are you throwing the exception. Just return an empty string would work I hope.

[Richard Green]

that will work. But i dont want to modify the function in my utility class

public Date checkNotNull(Date d){
if (d==null) throw DateNotFoundException(""); 
        return d;
}

as this function is used in several places. any other solution? (apart from adding a new fn to the utility class that does the same check except that it returns "" instead of throwing exception).

[g madhava]

Change the method which you have in the backing bean to the below.

public Date getEnd() {
return someUtiltyClass.checkNotNull(end);
}

 
public Date getEnd()
{
Date d = null;
try
{
d = someUtiltyClass.checkNotNull(end);
}
catch (DateNotFoundException de)
{
d = null;
}
return d;
} 

[Adeel Ansari]

Originally posted by g madhava:
Change the method which you have in the backing bean to the below.

 
public Date getEnd()
{
Date d = null;
try
{
d = someUtiltyClass.checkNotNull(end);
}
catch (DateNotFoundException de)
{
d = null;
}
return d;
} 

Simply.