Dynamic Imagelink Component - Calling Impl method with input parameter

Question

Hi All,
I have requirement where Imagelinks are created dynamically on the pageload. Generated the components and the components are displayed on the jspx.
Now when I click the image link, a method in AMImpl should invoke and this method takes some input parameters.
I am able to call the method successfully in AMimpl with the help of below code. But I could not understand how to pass the input parameters to that method.
                           RichCommandImageLink lockimageLink =
                            new RichCommandImageLink();
                        lockimageLink.setIcon("icon.png");
                        lockimageLink.setId("icon" + index);                   
                        MethodExpression me =
                            JSFUtils.getMethodExpression("#{bindings." +
                                                         "MyMethodName" +
                                                         ".execute}");
                        lockimageLink.addActionListener(new MethodExpressionActionListener(me));
  public static MethodExpression getMethodExpression(String name) { 
   Class [] argtypes = new Class[1]; 
   argtypes[0] = ActionEvent.class; 
   FacesContext facesCtx = FacesContext.getCurrentInstance(); 
   Application app = facesCtx.getApplication(); 
   ExpressionFactory elFactory = app.getExpressionFactory(); 
   ELContext elContext = facesCtx.getELContext(); 
   return elFactory.createMethodExpression(elContext,name,null,argtypes); 
  } Can some one please suggest how to pass input parameters to the Impl method.
Jdeveloper Version : 11.1.1.4.0
Thanks,
Morgan.
Edited by: 900114 on May 12, 2012 11:23 PM

Answer 1

You can use the below method to call an AMImpl method. You can pass parameters as well to the AMImpl method.
DCBindingContainer bindings = getDCBindingContainer();
OperationBinding ob = bc.getOperationBinding("MyMethodName");
Map m = ob.getParamsMap();
ob.put("paramName", "paramValue"); paramName is the parameter in AMImpl and paramValue is the value to be passed.
ob.execute();
Where getDCBindingContainer() is:
public DCBindingContainer getDCBindingContainer() {
ExpressionFactory exprFactory;
ELContext elContext;
ValueExpression valueExpression;
DCBindingContainer dcBindingContainer;
FacesContext facesContext = FacesContext.getCurrentInstance();
exprFactory = facesContext.getApplication().getExpressionFactory();
elContext = facesContext.getELContext();
valueExpression =
exprFactory.createValueExpression(elContext, "#{bindings}",
Object.class);
dcBindingContainer =
(DCBindingContainer)valueExpression.getValue(elContext);
return dcBindingContainer;
Hope this helps
Edited by: umesh.agarwal on May 13, 2012 12:10 AM
Edited by: umesh.agarwal on May 13, 2012 12:10 AM