Using stored parameter from data control class with stacked bar-graph

Question

Hi folks,
I'm relatively new to ADF & EJB so I want to apologise in advance if this question seems rudimentary to many of you.
Edit:  I should have mentioned that I'm using JDeveloper 11.1.1.5
I'm having a hard time determining how to retrieve the value from a variable to be assigned to a property of the bar graph I'm trying to display on my JSF page.
I have tried to briefly summarise the logic below for reference.
I have a data control class (ActivityChart) that includes a method "getActivityDetail" returns a List of custom Objects (ActivityDTO) that are the underlying data for my bar graph.
public class ActivityChart {
    private Double axisScale;
    public ActivityChart() {
        super();
        axisScale = 0.0;
    public List<ActivityDTO> getActivityDetail(List<String> businessUnits) {
        List<ActivityDTO> returnNewList = new ArrayList<ActivityDTO>();
        List<TransactionDTO> dataList = new ArrayList<TransactionDTO>();
        TransactionSessionBean transBean = lookupTransactionSessionBean();
        if (businessUnits != null && !businessUnits.isEmpty()){
            dataList = transBean.getActivityData(SystemUtil.getCurrentUser(), businessUnits);           
            returnNewList = processTransactions(dataList);
            axisScale = calcAxisScale(returnNewList);
        return returnNewList;
...The TransactionDTO object is basically a mirror of the entity object to store the fields from the queried db transactions.
The ActivityDTO object contains a String value (x-axis label) and 3 Double values for the values required for the bar graph.
What I'm trying to do is dynamically set the scale for the 2 y-axes (I'm using a dual-axis stacked bar graph) because the auto calculated values are not aligned.
Right now I've got the two relevant elements of the bar graph hard-coded with a specific axis value:
<dvt:y1Axis axisMaxAutoScaled="false" axisMaxValue="100.0"/>
<dvt:y2Axis axisMaxAutoScaled="false" axisMaxValue="100.0"/>.
The value I want to use for the Y-axis is calculated and stored in the "axisScale" variable in the above class.
Really at a loss of how to move forward from here.
Would very much appreciate any guidance/direction offered.
Thanks,
Karim
Edited by: 973742 on Nov 28, 2012 8:12 AM

Answer 1

Looks like I may have found the answer!
I had to set up the variable in the bindings for the page and then reference the variable from the binding and add the property inputValue.
ie. value="#{bindings.axisScale.inputValue}"