Start process of Ivycomponent in ManagedBean

Question

Hi everyone, I had a dialog, and an ivyComponent. component is included into dialog When i try to call process in Logic of Dialog like this, it work fine.

    FacesContext context = FacesContext.getCurrentInstance();
    ExpressionFactory elFactory = context.getApplication().getExpressionFactory();
    ELContext elContext = context.getELContext();
    MethodExpression methodExpression = elFactory
            .createMethodExpression(elContext, "#{logic.mainMethod()}", String.class, new Class[0]);
    MethodInfo info = methodExpression.getMethodInfo(elContext);
    methodExpression.invoke(elContext, new Object[0]);

But when i try to call componentMethod() in component logic, it show method not found error : method not found example.main.componentMethod().

Update : each dialog had it own ManagedBean, and i fail to call when i use component ManagedBean.

Seem like current context is not belong to component, have anyone meet this before ?

Thank you :)

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Accepted Answer

hi @docvominh

I have nearly the same case and i can call ivy method by this function:

public static Object evalELExpressionAsObject(String expression, FacesContext context)  {
        ExpressionFactory expressionFactory = context.getApplication().getExpressionFactory();
        ELContext elContext = context.getELContext();
        ValueExpression vex = expressionFactory.createValueExpression(elContext, expression, Object.class);
        Object result = (Object) vex.getValue(elContext);
        return result;
    }

Here is calling:

evalELExpressionAsObject("#{logic.doSomething()}", FacesContext.getCurrentInstance());

but in my experience, we only can call methods if they belong to Main Page (in your example) and can't call method of ComponentProcess component.

Because ivy have the mechanism to resolve keyword #data and #logic in correct context (see http://answers.axonivy.com/questions/2549/mechanism-to-resolve-data-and-logic-of-htmluserdialog)

So when you evaluate those twos manually, it will take the biggest context (the page).

P/S: once i can get the method of sub-component sucessfully but it lead to a lot of issue with security in ivy, so i suggest you should not do that (it look like a hack). You can introduce a managed bean for your component and you can call methods from there.

Cheers,

Answer 2

0

Hi @trungdv

Thanks for your comment.

I really like to do everything in ManagedBean. Fortunately, i found new way to achieve my goal.

use actionListener to call ManagedBean method, and action to call ivy method, when managedBean is done, ivy method start to call.

<p:commandButton actionListener="#{sPDocumentBean.prepareFile}" action="#{logic.uploadDocument}" value="Save"/>

Thank you :)

link

answered 07.07.2017 at 05:32

docvominh
(suspended)
accept rate: 0%

edited 07.07.2017 at 05:34

Start process of Ivycomponent in ManagedBean

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