How to programmatically set Bind Variable in an LOV in ADF

Hello,

This is again a post about ADF Basics.

Today I am going to demonstrate a  how we can set bindVariable in an Lov programatically without using viewAccessor of the viewObject.

For the demonstration I have created a temporary viewObject and a department ViewObject through which Lov will be made.

I have created a TempVo with a Transient attribute EmployeeIdTrans on which lov of EmployeesVO will be created .

In the EmployeeVo I have created a viewCriteria as follows.

Then apply the Lov on the basis of this EmployeeVO in the TempVO.

In the viewAccessor of the lov Select the ViewCritera

Drag the EmployeeIdTrans on the Jspx page and create a single selection lov.

Then add a new Input text box from which we will fetch the value of the department on which the lov needs to be filtered.

Here is the code of the jspx page

 <af:panelBox text="Set BindVariable in an Lov Programmatically" id="pb1">
                    <f:facet name="toolbar"/>
                    <af:panelGroupLayout id="pgl1" layout="horizontal">
                        <af:inputText label="Department Id" id="it1"
                                      autoSubmit="true" value="#{viewScope.TestBean.deptId}"/>
                        <af:button text="Set Department Id" id="b1"
                                   actionListener="#{viewScope.TestBean.setLovBindVarAL}"/>
                    </af:panelGroupLayout>
                    <af:spacer width="10" height="10" id="s1"/>
                    <af:selectOneChoice value="#{bindings.EmployeeIdTrans.inputValue}"
                                        label="Employees"
                                        required="#{bindings.EmployeeIdTrans.hints.mandatory}"
                                        shortDesc="#{bindings.EmployeeIdTrans.hints.tooltip}" id="soc1"
                                        partialTriggers="b1">
                        <f:selectItems value="#{bindings.EmployeeIdTrans.items}" id="si1"/>
                        <f:validator binding="#{bindings.EmployeeIdTrans.validator}"/>
                    </af:selectOneChoice>
                </af:panelBox>

Then create a method in ApplicaitonModuleImpl that will set the value bindVariable and execute the lov and then call it in the bean.

 /**
     * Method to execute Lov with bind variables
     * @param deptId
     */
    public void setBindVarAndExceuteLov(Integer deptId){
        Row currentRow = getTemp1().getCurrentRow();
        RowSet lovVO = (RowSet)currentRow.getAttribute("EmployeesVO1");
        lovVO.setNamedWhereClauseParam("DeptIdBind", deptId);
        lovVO.executeQuery();
    }

You can refer this if you want to know how to call a method to ApplicationModuleImpl in Bean http://adfjavacodes.blogspot.com/2013/09/calling-method-defined-in-impl-class-of.html

Here is the code used in the Bean.

package bindvariableinlovapp.view;

import javax.faces.event.ActionEvent;

import oracle.adf.model.BindingContext;
import oracle.adf.view.rich.component.rich.input.RichInputText;

import oracle.binding.OperationBinding;

public class TestBean {
    private Integer deptId;

    public void setDeptId(Integer deptId) {
        this.deptId = deptId;
    }

    public Integer getDeptId() {
        return deptId;
    }

    public TestBean() {
    }

    public OperationBinding getBindings(String binding){
        return BindingContext.getCurrent().getCurrentBindingsEntry().getOperationBinding(binding);
    }
    public void setLovBindVarAL(ActionEvent actionEvent) {
        OperationBinding binding = getBindings("setBindVarAndExceuteLov");
        binding.getParamsMap().put("deptId", deptId);
        binding.execute();
    }

}

On running the application it shows all the departments.

On filtering with department Id 1.

Here is the sample application : ProgramaticValueOfBindVarInLovApp