Question

Since upgrading from WAS6.1 to WAS7.0 I’m getting an error when trying to display a value contained in an array.

Java:

private Date[] days = new Date[10];
public Date[] getDays() {
    return days;
}

JSP:

<td><fmt:formatDate value="${fair.days[0]}" pattern="dd.MM.yyyy" /><td>

This causes the following error:

[Exception in:/tilesContent/listFairs_bodyarea.jsp] Missing Resource in EL
 implementation: ???propertyNotReadable??? 

My application works fine when deployed to a WAS6.1 server. The problem only occurs on WAS7.

I added a getFirstDay() method which returns days[0] and accessed it using ${fair.firstDay} and this works. Is there a problem accessing arrays?

Answer 1

I think I have found an partial explanation and a work-around for the problem.

I added a new indexed property to the Fair class to check that indexed
properties work ok. They do.

I added a new getter for the days array and gave it the name getXyz(). That worked ok.

I noticed that the original getter and setter were asymetrical (hysterical reasons).

public Date[] getDays() {                                               
    return days;                                                        
}                                                                       
public void setDay(int day, Date date) {                                
    this.days[day] = date;                                              
}       

I know this is a bit wierd but it worked up til now. Anyway, I modified
the methods as follows:

public Date[] getDays() {                                               
    return days;                                                        
}                                                                       
public void setDays(Date[] dates) {                                     
    this.days = dates;                                                  
}                                                                       
public void setDay(int day, Date date) {                                
    this.days[day] = date;                                              
}  

The problem no longer occurs.

I have no explaination for why this fixes the problem as I think that only the getter is being used. This ‘solution’ is ok for me as the code looks better and it works.

(Feel free to add a comment if you know WHY this solves the problem)