Storage and access to the values of the pageFlowScope at the bean

Using JDeveloper 11.1.1.4.0

Hi again,
I read somewhere that store parameter values in a bean is a good practice, now I wonder. I did this and 'declared' this bean to my workflow bounded as pageFlowScope. Now, I need to access the values in another bean "method (scope of application) and cannot get them." If I would have just used EL #{pageFlowScope.variable1} I know how access (as in my code below), but since they are in a bean I can't find the right way to retrieve the values. Is it possible and how?
    <managed-bean id="__3">
      <managed-bean-name id="__2">ViewAmtsParameters</managed-bean-name>
      <managed-bean-class>tax.viewamtsowedtreetbl.view.ViewAmtsParameters</managed-bean-class>
      <managed-bean-scope id="__4">pageFlow</managed-bean-scope>
    </managed-bean>

    // Get access to the adf faces context for page flow scope
    AdfFacesContext adfctx = null;
    adfctx = AdfFacesContext.getCurrentInstance();
    BindingContainer bindings = getBindings();
    OperationBinding operationBinding =
        bindings.getOperationBinding("ExecuteWithParams");
    // Set the parameters for the query
    operationBinding.getParamsMap().put("cid",
                                        adfctx.getPageFlowScope().get("ViewAmtsParameters.clientIdParam"));
    operationBinding.getParamsMap().put("can",
                                        adfctx.getPageFlowScope().get("ViewAmtsParameters.canParam"));
    operationBinding.getParamsMap().put("asofdate", newValue);
    System.out.printf("first execute parms  %s   %s      %s \n",
                      operationBinding.getParamsMap().get("cid"),  -- returned null
                      operationBinding.getParamsMap().get("can"), -- returned null
                      operationBinding.getParamsMap().get("asofdate"));
I also tried to use accessors of the bean of the pageFlowScope, which gives me an error indicating that the access is forbidden.

Thanks again in advance.
Troy

"" "You're almost there. '" You cannot directly access the bean inside bean attributes. The pageFlowScope card allows you to access the bean itself. Once you have the bean, you can use their getter to get the attributes.
Or you use the EL (as you use it on the page) and evaluate it for the value:


public static Object resolveExpression(String expression)
    {
        try
        {
            FacesContext facesContext = FacesContext.getCurrentInstance();
            Application app = facesContext.getApplication();
            ExpressionFactory elFactory = app.getExpressionFactory();
            ELContext elContext = facesContext.getELContext();
            ValueExpression valueExp =
                elFactory.createValueExpression(elContext, expression, Object.class);
            return valueExp.getValue(elContext);
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
        return null;
    }

public void YOURMETHOD()
{
    AdfFacesContext adfctx = null;
    adfctx = AdfFacesContext.getCurrentInstance();

    Map pageParams = adfctx.getPageFlowScope();
    // assuming the class of your bean class is ViewAmtsParametersBean and the name you've given the bean is "ViewAmtsParameters"
    ViewAmtsParametersBean parambean = (ViewAmtsParametersBean) pageParams .get("ViewAmtsParameters");

    //an other way to access the bean attributes is to use EL
    String strIdParam = (String) resolveExpression("#{pageFlowScope.ViewAmtsParameters.clientIdParam}");

    BindingContainer bindings = getBindings();
    OperationBinding operationBinding =
        bindings.getOperationBinding("ExecuteWithParams");

    // Set the parameter for the query
    operationBinding.getParamsMap().put("cid", parambean.getClientIdParam());
    operationBinding.getParamsMap().put("can", parambean.getCanParam());

    operationBinding.getParamsMap().put("asofdate", newValue);
    System.out.printf("first execute parms  %s   %s      %s \n",
                      operationBinding.getParamsMap().get("cid"),
                      operationBinding.getParamsMap().get("can"),
                      operationBinding.getParamsMap().get("asofdate"));
 }

Timo

Tags: Java

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