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Get the display value of selectonechoice or LOV in bean – Oracle ADF

I found one approach to get the display value of LOV in managed bean using  ADFUtils.evaluateEl method.

Say if you have a value change listener for an lov,  valueChangeEvent.getNewValue() gives the index of the value. To get the display value of the lov, use below logic  :

public void onDeptNameChange(ValueChangeEvent valueChangeEvent) {

Object deptNameAttribute = ADFUtils.evaluateEL("#{bindings.deptName.items['"+valueChangeEvent.getNewValue().toString()+

"'].label}");

String deptNameStr = deptNameAttribute .toString();  // This should have the selected display value of lov.

}

Say if you want to access the display value of LOV, in any other method, other than valueChange listener, then use below code :

Object deptNameAttribute = ADFUtils.evaluateEL("#{bindings.deptName.items['"+ADFUtils.getBoundAttributeValue("deptId")+"'].label}");

Here deptId is the code of this lov.  Hope this is helpful.

Happy learning with Techartifact……

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Dynamic Creation of cascading Lov in oracle ADF or model driven Lov in Oracle ADF.

Requirement – I am working on tricky requirement where i have two child component and one child LOV.How to do that?

Solution- Well if you have working knowledge of cascading LOV in then we pass bind parameter of parent LOV attribute in child LOV View Accessor(VA) . But in this scenario , we have two master LOV. then we will be doing by passing through managed bean, using Application module session .

What i have done.I have used HR schema .

I have 3 view object. one as country table of HR schema.One View object for location table.One view which have all transient attribute and consider to be main view object.

As i found this approach in Jobinesh’s blog- i write a custom method in applicationModuleImpl.java as below –

    public void setLocationIDSessionData(String locId){
          System.out.println("hello 232323&&&"+locId);
        this.getSession().getUserData().put("LocationId", locId);
        
      }

I have getUserData method of applicationModule interface which returns a java.util.Hashtable which may be used to store user specific context that is related to this application session.

Read all other method related to this
http://docs.oracle.com/cd/E12839_01/apirefs.1111/e10653/oracle/jbo/ApplicationModuleHandle.html

Ok, coming back to this requirement – I used a managed bean in backing bean scope where i executed the binding of applicationModuleImpl custom method as below –

    public void executec(String valueChangeEvent) {
    BindingContext bctx = BindingContext.getCurrent();
           BindingContainer bindings = bctx.getCurrentBindingsEntry();
           OperationBinding op =
               (OperationBinding)bindings.getOperationBinding("setLocationIDSessionData");
           op.getParamsMap().put("locId",valueChangeEvent);
           op.execute();
    }

Here we are passing the value of both LOV to locationId to custom applicationModuleImpl method.In both parent LOV , i create valuechangeEvent method , which get the current selected countryId and pass to custom applicationModuleImpl method. that is below –

    public void VC(ValueChangeEvent valueChangeEvent) {
      System.out.println("hello &&&"+valueChangeEvent.getNewValue());
      
       
        executec(valueChangeEvent.getNewValue().toString());
    }

    public void vc2(ValueChangeEvent valueChangeEvent) {
        System.out.println("hello &&&34343"+valueChangeEvent.getNewValue());
        executec(valueChangeEvent.getNewValue().toString());
    }

Now we have final task, we have to set the value of child lov bind parameter in child View Accessor as adf.userSession.userData.LocationId –

That’s it.now we will run the jspx , which have all 3 lov.2 parent and one child LOV.
for displaying LOV , we need to click on create button.after click you can see all 3 LOVs.

After selecting county as CH from countryLov1 , we will see different values in location ID.

Now we will select country as IN from countryLov2 , we will see different values in location ID.

You can download the sample application here.

ModelDrivernCascadingLOVs

Happy coding with Vinay kumar in techartifact….

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Get the value from SelectOneChoice or LOV not the index in bean -Oracle ADF

Another approach i am sharing with you.Normally we want to get selectOneChoice value and we normally get the index.
We will creating an attribute in the selectOneChoice items and the selected value lable.

                        <af:selectOneChoice value="#{bindings.reportType.inputValue}"
                                          required="#{bindings.reportType.hints.mandatory}"
                                          shortDesc="#{bindings.reportType.hints.tooltip}"
                                          id="soc1" partialTriggers="cb2"
                                          autoSubmit="true"
                                          styleClass="hrt_reporting"
                                          valueChangeListener="#{pageFlowScope.ReportFilterBean.reportTypeVC}"
                                          binding="#{pageFlowScope.ReportFilterBean.reportTypeChoice}">
                        <f:selectItems value="#{bindings.reportType.items}"
                                       id="si2"/>
                        <f:attribute name="rowIndexVal" value="#{bindings.reportType.items[bindings.reportType.inputValue].label}"/>
                      </af:selectOneChoice>

and in the bean you can write as 

        valueChangeEvent.getComponent().processUpdates(FacesContext.getCurrentInstance());
        Map map = ((UIComponent)valueChangeEvent.getSource()).getAttributes();
        String reportTypeValue = (String)map.get("rowIndexVal");

that’s it, you are done.

Happy coding with Vinay Kumar in techartifact,,