OK, I thought I had it working correctly...but I can't seem to figure
out why I'm getting a ClassCastException in the model now.
It displays the correct quantity when the page is first pulled up
(after selecting an item & quantity on previous page) - but if I
change the quantity and re-submit on the Cart page I get this:
java.lang.ClassCastException: java.lang.Integer
at com.agribeef.abcommerce.ui.Cart$1$1.setObject(Cart.java:121)
at wicket.Component.setModelObject(Component.java:1908)
Line 121 is commented:
IModel selectionModel = new Model()
{
public void setObject(Component c,
Object o)
{
//121: CCE HAPPENS HERE
selection.put(config,
Integer.valueOf((String)o));
}
public Object getObject(Component c)
{
return selection.get(config);
}
};
If I'm selecting a string from the DropDownChoice as a value, why
would this barf?
I think I've been staring at this code too long...I'm starting to trip
over my own toes.
On 5/1/06, Vincent Jenks <[EMAIL PROTECTED]> wrote:
Man, that'd be nice....
On 5/1/06, Igor Vaynberg <[EMAIL PROTECTED]> wrote:
> no prob.
>
> for future ref keep in mind wicket works on objects. this will be easier
> when we have generics in 2.0 because then the decl would be
>
> DropDownChoice<T>(String id, IModel<T> selection, IModel<List<T>> choices)
>
> -Igor
>
>
> On 5/1/06, Vincent Jenks <[EMAIL PROTECTED]> wrote:
> >
> Ahh crap...that worked. I had been around in circles on this so many
> times that was the only combination I *hadn't* tried.
>
> Thanks Igor, I really appreciate it.
>
> On 5/1/06, Igor Vaynberg < [EMAIL PROTECTED]> wrote:
> > next thing is your choices need to be integers, because "10"!=10
> >
> >
> > -Igor
> >
> >
> > On 5/1/06, Vincent Jenks < [EMAIL PROTECTED]> wrote:
> > > I set it to return selection.get(config) and it still doesn't select
> > anything.
> > >
> > > I have this now:
> > >
> > > IModel selectionModel =
> > new Model()
> > > {
> > > public void
> > setObject(Component c, Object o)
> > > {
> > >
> > selection.put(config, Integer.parseInt((String)o));
> > > }
> > >
> > > public Object
> > getObject(Component c)
> > > {
> > > return
> > selection.get(config);
> > > }
> > > };
> > >
> > > ...which is still producing this:
> > >
> > > <select wicket:id="quantity" name="cartView:0:quantity">
> > > <option value="0">0</option>
> > > <option value="1">1</option>
> > > <option value="2">2</option>
> > > <option value="3">3</option>
> > > <option value="4">4</option>
> > > <option value="5">5</option>
> > > <option value="6">6</option>
> > > <option value="7">7</option>
> > > <option value="8">8</option>
> > > <option value="9">9</option>
> > > </select>
> > >
> > > I don't want to work directly on the cart object since I have a method
> > > in another class that accepts a Map....and I'm reusing that method
> > > throughout the cart. I don't want to write another method or alter
> > > the one I have to get around this issue. It works well as it takes
> > > the map apart, determines if the object already exists, adjusts the
> > > quantity, etc. I want all cart item additions, adjustments, etc. to
> > > flow thorugh this single method.
> > >
> > > On 5/1/06, Igor Vaynberg < [EMAIL PROTECTED]> wrote:
> > > > furthermore, if you wanted you can work on your cart object directly
> > instead
> > > > of having to translate to and from the map.
> > > >
> > > > -Igor
> > > >
> > > >
> > > >
> > > > On 5/1/06, Igor Vaynberg <[EMAIL PROTECTED]> wrote:
> > > > >
> > > > > IModel
> selectionModel
> > = new Model()
> > > > > {
> > > > > public void
> > setObject(Component c,
> > > > Object o)
> > > > > {
> > > > >
> > selection.put(config,
> > > > Integer.parseInt((String)o));
> > > > > }
> > > > >
> > > > > public
> Object
> > getObject(Component
> > > > c)
> > > > > {
> > > > >
> return
> > selection.get(this);
> > > > > }
> > > > > };
> > > > >
> > > > >
> > > > > in getObject() shouldnt that be return selection.get(config);
> > get(this)
> > > > will always return null.
> > > > >
> > > > >
> > > > > -Igor
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > On 5/1/06, Vincent Jenks <[EMAIL PROTECTED] > wrote:
> > > > > > I'm back on this issue now after having put it on the
> "back-burner"
> > > > > > for a short time...since I couldn't figure it out before. I had
> > > > > > posted several messages about this but can't find the original
> > emails
> > > > > > to reply to, so I'm sorry to create a new thread out of an old
> > issue!
> > > > > >
> > > > > > I *just can't* get this dropdown to choose an item after loading
> the
> > > > > > model and passing it in...I've exhausted all of my own ideas and
> > > > > > really need help figuring this out.
> > > > > >
> > > > > > I'm building a shopping cart and after selecting an item to add to
> > > > > > your cart on a products-list page...you see the next page (Cart
> > > > > > class).
> > > > > >
> > > > > > In the previous page I used a Map to store the Configuration item
> +
> > > > > > its quantity selected by the user (Igor, you may remember my many
> > > > > > posts on this issue)....I then use the Cart page to load the Map
> > into
> > > > > > the page for display. Adding & changing items in my cart revolve
> > > > > > around Wicket passing this Map into it.
> > > > > >
> > > > > > In the Cart page I pre-load a new Map to pass into a ListView and
> > the
> > > > > > user can then adjust the quantity of the items chosen and
> re-submit
> > > > > > the changes.
> > > > > >
> > > > > > Here is the entire class:
> > > > > >
> > > > > >
> > > >
> >
>
************************************************************************************
> > > > > > public class Cart extends WebPage
> > > > > > {
> > > > > > private Map<Configuration, Integer> selection = new
> > > > > > HashMap<Configuration, Integer>();
> > > > > >
> > > > > > public Cart()
> > > > > > {
> > > > > > //get cart from session
> > > > > > final ShoppingCart cart =
> > > > ((UserSession)getSession()).getCart();
> > > > > >
> > > > > > //create form
> > > > > > Form form = new Form("cartForm");
> > > > > >
> > > > > > //add OrderLine items to map
> > > > > > for (OrderLine line : cart.getOrderLines())
> > > > > > {
> > > > > > selection.put(line.getConfiguration(),
> > > > line.getQuantity());
> > > > > > }
> > > > > >
> > > > > > //add list of Configuration objects to form
> > > > > > form.add(new ListView("cartView",
> cart.getOrderLines
> > ())
> > > > > > {
> > > > > > protected void
> > > > populateItem(ListItem item)
> > > > > > {
> > > > > > //get object
> > > > > > final OrderLine
> > line =
> > > > (OrderLine)item.getModelObject();
> > > > > >
> > > > > > //pull config
> from
> > line
> > > > > > final
> Configuration
> > > > config = line.getConfiguration();
> > > > > >
> > > > > > //store
> > Configuration
> > > > and qty in model
> > > > > > IModel
> > selectionModel =
> > > > new Model()
> > > > > > {
> > > > > > public
> void
> > > > setObject(Component c, Object o)
> > > > > > {
> > > > > >
> > > > selection.put(config, Integer.parseInt((String)o));
> > > > > > }
> > > > > >
> > > > > > public
> > Object
> > > > getObject(Component c)
> > > > > > {
> > > > > >
> > return
> > > > selection.get(this);
> > > > > > }
> > > > > > };
> > > > > >
> > > > > > //qty select
> values
> > > > > > List<String>
> > choices =
> > > > Arrays.asList(
> > > > > >
> new
> > > > String[] {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9"});
> > > > > >
> > > > > > //add quantity
> > select
> > > > list
> > > > > > item.add(new
> > > > DropDownChoice("quantity", selectionModel, choices)
> > > > > > {
> > > > > > protected
> > > > String getDefaultChoice(final Object selected)
> > > > > > {
> > > > > > return ""; //get rid of "Choose One"
> default
> > > > > > }
> > > > > >
> > > > > > public
> > String
> > > > getDisplayValue(Object object)
> > > > > > {
> > > > > >
> > return
> > > > object.toString();
> > > > > > }
> > > > > >
> > > > > > public
> > String
> > > > getIdValue(Object object, int index)
> > > > > > {
> > > > > >
> > return
> > > > object.toString();
> > > > > > }
> > > > > > });
> > > > > >
> > > > > > //create link w/
> > event
> > > > handler
> > > > > > item.add(new
> > > > Link("removeLink")
> > > > > > {
> > > > > > public
> void
> > > > onClick()
> > > > > > {
> > > > > >
> > > > ............................
> > > > > > }
> > > > > > });
> > > > > > }
> > > > > > }.setOptimizeItemRemoval(true));
> > //must
> > > > be set inside of form
> > > > > >
> > > > > > //add submit button
> > > > > > form.add(new Button("qtyChangeButton")
> > > > > > {
> > > > > > public void onSubmit()
> > > > > > {
> > > > > > ................
> > > > > > }
> > > > > > });
> > > > > >
> > > > > > //add form to page
> > > > > > add(form);
> > > > > > }
> > > > > > }
> > > > > >
> > > >
> >
>
************************************************************************************
> > > > > >
> > > > > > You'll see I declared my map at the top of the ctor:
> > > > > >
> > > > > > private Map<Configuration, Integer> selection = new
> > > > > > HashMap<Configuration, Integer>();
> > > > > >
> > > > > > Later, in the ListView I'm trying to match the users'
> Configuration
> > > > > > objects so the quantity will automatically show in the
> > DropDownChoice
> > > > > > list in the page:
> > > > > >
> > > > > > IModel
> > selectionModel =
> > > > new Model()
> > > > > > {
> > > > > > public
> void
> > > > setObject(Component c, Object o)
> > > > > > {
> > > > > >
> > > > selection.put(config, Integer.parseInt((String)o));
> > > > > > }
> > > > > >
> > > > > > public
> > Object
> > > > getObject(Component c)
> > > > > > {
> > > > > >
> > return
> > > > selection.get(this);
> > > > > > }
> > > > > > };
> > > > > >
> > > > > > However, the existing quantity does not get selected, it always
> > > > > > defaults to zero, the first item in the list. The html renders
> like
> > > > > > this:
> > > > > >
> > > > > > <select wicket:id="quantity" name="cartView:0:quantity">
> > > > > > <option value="0">0</option>
> > > > > > <option value="1">1</option>
> > > > > > <option value="2">2</option>
> > > > > > <option value="3">3</option>
> > > > > > <option value="4">4</option>
> > > > > > <option value="5">5</option>
> > > > > > <option value="6">6</option>
> > > > > > <option value="7">7</option>
> > > > > > <option value="8">8</option>
> > > > > > <option value="9">9</option>
> > > > > > </select>
> > > > > >
> > > > > > Now, if I were to select a quantity and re-submit...it works
> > > > > > correctly...that's not the issue...the only issue I have is the
> > > > > > *existing* quantity for that Configuration object is not selected
> by
> > > > > > default...it looks bad and if the user were to accidentally submit
> > w/o
> > > > > > first selecting a quantity, it would set it to zero and remove the
> > > > > > item from the cart....eep!
> > > > > >
> > > > > > Igor had suggested that it was a data-type conversion issue IIRC,
> > but
> > > > > > I tried turning the array into Integers:
> > > > > >
> > > > > > List<Integer> choices = Arrays.asList(
> > > > > >
> new
> > > > Integer[] {0, 1, 2, 3, 4, 5, 6, 7, 8, 9});
> > > > > >
> > > > > > ...it didn't matter.
> > > > > >
> > > > > > When i walk through the debugger the model is getting
> > > > > > populated...everything appears to go according to plan...I just
> > can't
> > > > > > nail this one!
> > > > > >
> > > > > > Thanks in advance, it's much appreciated!!
> > > > > >
> > > > > >
> > > > > >
> > -------------------------------------------------------
> > > > > > Using Tomcat but need to do more? Need to support web services,
> > > > security?
> > > > > > Get stuff done quickly with pre-integrated technology to make your
> > job
> > > > easier
> > > > > > Download IBM WebSphere Application Server v.1.0.1 based on Apache
> > > > Geronimo
> > > > > >
> > > >
> >
> http://sel.as-us.falkag.net/sel?cmdlnk&kid0709&bid&3057&dat1642
> > > > > > _______________________________________________
> > > > > > Wicket-user mailing list
> > > > > > Wicket-user@lists.sourceforge.net
> > > > > >
> > > >
> > https://lists.sourceforge.net/lists/listinfo/wicket-user
> > > > > >
> > > > >
> > > > >
> > > >
> > > >
> > >
> > >
> > > -------------------------------------------------------
> > > Using Tomcat but need to do more? Need to support web services,
> security?
> > > Get stuff done quickly with pre-integrated technology to make your job
> > easier
> > > Download IBM WebSphere Application Server v.1.0.1 based on Apache
> Geronimo
> > >
> >
> http://sel.as-us.falkag.net/sel?cmdlnk&kid0709&bid&3057&dat1642
> > > _______________________________________________
> > > Wicket-user mailing list
> > > Wicket-user@lists.sourceforge.net
> > >
> https://lists.sourceforge.net/lists/listinfo/wicket-user
> > >
> >
> >
>
>
> -------------------------------------------------------
>
> Using Tomcat but need to do more? Need to support web services, security?
> Get stuff done quickly with pre-integrated technology to make your job
> easier
> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
> http://sel.as-us.falkag.net/sel?cmdlnk&kid0709&bid&3057&dat1642
> _______________________________________________
> Wicket-user mailing list
> Wicket-user@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/wicket-user
>
>
-------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid0709&bid&3057&dat1642
_______________________________________________
Wicket-user mailing list
Wicket-user@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/wicket-user
