Hi people here's the example:
double thisMonthSales = 0;
for( i=0,super.thisMonthSales=0; i<=(elim.size()-1); i++)
{
super.thisMonthSales += elim.get
(i).getDouble("grandTotal").doubleValue();
}
I was earlier omitting super.thisMonthSales=0 within for loop. This
resulted in an error "Illegal use of undefined object or 'void' literal "
Even removing "super" keyword from : super.thisMonthSales +=
elim.get(i).getDouble("grandTotal").doubleValue();
: did not work. Atleast this was expected to work because i had defined the
variable outside the loop too.
A point from the bshmanual.
"In BeanShell using an untyped or "loosely"
typed variable is also equivalent to declaring a local variable. That is, if
you use a variable that has not been
defined elsewhere, it defaults to the local scope:"
Thanks and Regards.
Vijay
On 9/26/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
>
> vija
>
> "So if one has to use the same variable elsewhere than one must declare it
> outside the loop and refer to it elsewhere as super.variable to use the
> same
> version of the varible."
>
> Gads. I would love to see an example of this so I can avoid the same
> problem.
>
> Skip
>
> -----Original Message-----
> From: vijay Si [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, September 26, 2007 12:49 AM
> To: [email protected]
> Subject: Re: TypeCasting GenericValue object.
>
>
> Thanks....Skip.
> I got this point after some expeimentation " Typically, the
> GenericValue
> contains the name/value
> pairs of some row in a table or view."
>
> I changed my code accordingly... to use elim.get
> (i).getDouble("grandTotal").doubleValue();
>
> thanks for the support.
>
> One point that i would like to share is about beanshell.
> Beanshell localizes the scope of the variable used within the loop to that
> loop.
> So if one has to use the same variable elsewhere than one must declare it
> outside the loop and refer to it elsewhere as super.variable to use the
> same
> version of the varible.
>
> This actually took up lot of my time and was also one the reasons for
> "void"
> !!
>
>
>
> On 9/26/07, Skip <[EMAIL PROTECTED]> wrote:
> >
> > vijay
> >
> > I don't understand some of the code in your example. But, if you look
> at
> > the source for GenericEntity (which GenericValue is a subclass of), you
> > will
> > see that at its heart, there is a Map of name-value pairs, i.e. a String
> > which is the field name mapped to (in this case) the value(s) retrieved
> by
> > the GenericDelegator. Typically, the GenericValue contains the
> name/value
> > pairs of some row in a table or view.
> >
> > But, here is some code that will do what you want (assuming that
> > "grandTotal" is really a field in OrderHeader which I don't remember for
> > sure.) I have not included the required try/catch error trapping for
> > clarity.
> >
> > //Get a list of orders matching our conditions. In place of the
> ellipse,
> > add your conditions
> > List orders = delegator.findByAnd("OrderHeader", ...);
> > Iterator i = orders.iterator();
> >
> > double total = 0.0;
> > //Go through the list and add up all the "grandTotal" values.
> > while (i.hasNext())
> > {
> > GenericValue orderHeader = (GenericValue) i.next();
> > String orderId = orderHeader.getString("orderId");
> > Double totalThisOrder = orderHeader.getDouble("grandTotal");
> > System.out.println("Order id is " + orderId + "\t\tAmount is " +
> > totalThisOrder);
> > if(totalThisOrder != null)
> > total += totalThisOrder.doubleValue();
> > }
> > System.out.println(" \t\t Grand Total " + total);
> >
> >
> > In the above example, "orders" is a Java List of GenericValue objects
> > returned by the delegator. We have to iterate through them and extract
> > the
> > "grandTotal" values to add up.
> >
> > This is such a common task that maybe I'll write a
> >
> > double GenericValue.sumDouble(List <GenericValue>values, String field)
> > and
> > long GenericValue.sumLong(List <GenericValue>values, String field)
> >
> > Give it a try and see if this is not what you want.
> >
> > Skip
> >
> > -----Original Message-----
> > From: vijay Si [mailto:[EMAIL PROTECTED]
> > Sent: Tuesday, September 25, 2007 2:32 AM
> > To: [email protected]
> > Subject: Re: TypeCasting GenericValue object.
> >
> >
> > Hello Skip,
> >
> > My piece of code is :
> >
> > itelim = elim.iterator(); //where elim =
> > findByCond(........);
> > elimList = new ArrayList();
> >
> > while(itelim.hasNext())
> > {
> > elimList = itelim.next();
> > elimList.toString();
> >
> > String a1 = elimList.getString("grandTotal");
> > a = Double.parseDouble(a1);
> >
> > }
> > Now this does give me some result at the o/p : which is last entry in
> the
> > grandTotal column(a double value) say for eg: 350.30
> >
> > I also used the piece of code that you provided.....it works for sure
> but
> > gives "void" at the o/p.......
> >
> > Also wanted to ask as to how can i iterate over the grandTotal entries.
> > for
> > eg: if i have to get grandTotal for all products and sum it up.
> >
> > Thanks
> >
> > On 9/25/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
> > >
> > > You can't type cast the GenericValue. You possibly can type cast one
> of
> > > the
> > > objects it holds depending on the type. Each GenericValue holds
> > different
> > > types if information depending on what it represents. For example,
> > >
> > > GenericValue existingOrderHeader = delegator.findByPrimaryKey
> > > ("OrderHeader",
> > > UtilMisc.toMap("orderId", orderId));
> > > String customerId = externalOrderHeader.getString("customerPartyId");
> > >
> > > if OrderHeader had a Double value in it, say "grandTotal", you could
> > >
> > > double grandTotal =
> > > externalOrderHeader.getDouble("grandTotal").doubleValue();
> > >
> > >
> > > or
> > >
> > > double grandTotal =
> > > ((Double)externalOrderHeader.get("grandTotal")).doubleValue();
> > >
> > > Both of these will throw a ClassCastException if "grandTotal" is not a
> > > double.
> > >
> > > Everything in a GenericValue object is an object itself, i.e double is
> > > wrapped in Double, etc.
> > >
> > > Hope that helps
> > >
> > > Skip
> > >
> > > -----Original Message-----
> > > From: vijay Si [mailto:[EMAIL PROTECTED]
> > > Sent: Monday, September 24, 2007 11:12 PM
> > > To: [email protected]
> > > Subject: TypeCasting GenericValue object.
> > >
> > >
> > > Hi,
> > > I have been trying to type cast a generic value object to double and
> > > string,
> > > but i get an error
> > >
> > > "java.lang.ClassCastException: Cannot cast
> > org.ofbiz.entity.GenericValueto
> > > java.lang.xx"
> > >
> > > Is there any particular way in ofbiz to work around this?
> > >
> > > Regards
> > >
> > >
> >
> >
>
>
