ValueChangeEvent and ValueChangeListener

[christian . rueedi]

Hi there,

short: Can I get the model object of a row in a dataTable out of the event object in the ValueChangeListener method?

long:
I try to do something with the ValueChangeEvent. My itension is like this:
I have an order screen, where the user types in different values of an order.
The main part is a dataTable with SKU Lines(item lines). Now the user wants
to type in the sku number and the application should fetch all the data(description,
price,vat) from the database by it self.
So I added a ValueChangeListener to my InputText Field. I get into the method but
I don't know how to get the model object of my sku line. I tried with the ValueBindingMap
but had no luck to find the right path....

A workaround would be to make the ValueChangeListener on the skuline model object.
Then I could reference the model easily with "this". But I don't like to have to JSF GUI Method
on my generic skuline model object....

Here are my classes:

public class WVSForm <--------------  This is my BackingBean
{
        private              WVS        a_WVSObject                 = null;
       
        public void skuChangeListener(javax.faces.event.ValueChangeEvent event)
        {

                        Integer t_skunbr = (Integer)event.getNewValue();

                ValueBinding t_bind = event.getComponent().getValueBinding("value");
                String t_wvsSkuLineItemEL = t_bind.getExpressionString();
                Object t_source = event.getSource();
                Object t_skulineItem = FacesContext.getCurrentInstance().getApplication().getVariableResolver().resolveVariable(FacesContext.getCurrentInstance(),t_wvsSkuLineItemEL);


                System.out.println("");
                //GkSkuBroker.current().getFullSku(t_skunbr.toString(),"1",event.getSource())
        }
}

public class WVS  <----------------------- This is my order model
{
        private java.lang.Integer a_Rayon;
        private java.lang.Integer a_Company;
        private java.lang.String a_UserId;
        private java.lang.Integer a_Status;
        private java.util.Date a_CreateDate;
        private BigDecimal a_TotalCostAmount = new BigDecimal(0.00d);
        private java.util.List a_SkuLineItemList; // <-------------------------------------   this is my List of skulines
        private Integer a_WvsNbr;
        private Integer a_SenderBranch;
        private Integer a_ReceiverBranch;
}

public class WVSSkuLineItem  <------------------------ This is my skuline model
{

        private java.lang.String a_Descriptionvendor;
        private java.lang.Integer a_Skunbr;
        private String a_SkuType = "1";  // TODO fix this with the skubroker
        private BigDecimal a_Costamount = new BigDecimal(new BigInteger("0"),2);
        private Integer a_Seqnbr;
        private BigDecimal a_Quantity = new BigDecimal(new BigInteger("0"),3);
        private BigDecimal a_Costprice = new BigDecimal(new BigInteger("0"),2);
        private BigDecimal a_Retailprice = new BigDecimal(new BigInteger("0"),2);
        private java.lang.String a_Description;
        private BigDecimal a_Retailamount = new BigDecimal(new BigInteger("0"),2);
        private WVS a_Header;
        private Integer a_Company;
}

And the JSP entry:

<x:dataTable
        id="skuListTable"
        styleClass="InsideFieldSetSkuTable"
        style="border-collapse  : collapse;"
        headerClass="BoldText"
        rowClasses="FormNormal"
        columnClasses="TableInputButton NormalText, FillerSmall, FieldFormMedium NormalText TextLeftAlign,Filler,FieldForm NormalText                                                                 var="sku"
        value="#{WVSForm.a_WVSObject.a_SkuLineItemList}"
         >
       
          <h:column >
                <f:facet name="header">
                  <h:outputText value="#{msg.WVS_sku_nbr}" />
                </f:facet>
                <x:message for="" detailFormat="*" styleClass="ErrorText" />
                <h:inputText id="skunbr" value="#{sku.a_Skunbr}" required="true" styleClass="FieldFormMedium NormalText TextLeftAlign" valueChangeListener="#{WVSForm.skuChangeListener}"  >
                  <f:validateLength minimum="8" maximum="8" />
                </h:inputText>
          </h:column>
</x:dataTable>


Thanks for reading this!

Chris