Get a specific line of an iterator when loading of the page

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  Hi all

  I'm new to ADF and try to learn from its concepts. I've created a workflow with the train and using 7 jspx pages as the train stops. When I move from one stop to the next stop, the data are made to the database.

  My use case is, I want to fill an iterator of table on the loading of the page based on the data provided on the previous stop.

  I tried to use the code to find the iterator and create the line the view object in support Builder bean as well as file impl application module(call the executable action method) but every time I got the same null pointer exception.

  The code used for creating line iterator:

  BindingContext bindingContext = BindingContext.getCurrent ();
  BindingContainer DCBindingContainer = (DCBindingContainer) bindingContext.getCurrentBindingsEntry ();
  IdIterator DCIteratorBinding = bindingContainer.findIteratorBinding("iteratorName");

  ViewObject vo = idIterator.getViewObject ();

  Line rw = vo.createRow (); It is the line where I'm getting null pointer exception.

  Trace of the exception:

  at oracle.adf.model.bean.DCDataVO.initFKs(DCDataVO.java:621)

  at oracle.adf.model.bean.DCDataVO.createInstance(DCDataVO.java:592)

  at oracle.jbo.server.QueryCollection.createRowWithEntities(QueryCollection.java:1993)

  at oracle.jbo.server.ViewRowSetImpl.createRowWithEntities(ViewRowSetImpl.java:2492)

  at oracle.jbo.server.ViewRowSetImpl.doCreateAndInitRow(ViewRowSetImpl.java:2533)

  at oracle.jbo.server.ViewRowSetImpl.createRow(ViewRowSetImpl.java:2514)

  at oracle.jbo.server.ViewObjectImpl.createRow(ViewObjectImpl.java:11079)

  Please correct me if I'm wrong, but that's what I think I understand that, iterator links are not initialized correctly on appeal by Builder or application module impl of the file that I use.

  I will need to create a listener of phase of page for the task flow and and use the method afterPhase to call my method for line creation and insertion in the table iterator. ?

  But this approach causes the phase listner class to call for each workflow page I don't want I need to fill out the table only for a single page and not to other pages of six.

  Please help me in this problem by providing suggestions and pointers.

  My version of JDev is 11.1.1.6.

  Thanks in advance.

  ~ Abhishek

  Hi Ben,

  Thanks for your reply. But it did not solve my problem.

  To solve my problem, what I did is mentioned below:

  In my support for this page two, I create a listner beforePhase method and named her beforePhase displaying page jspx tag property.

  when the phaseId is RENDER_RESPONSE, so I call my method to set the extracted database of the values in the table iterator. and it updated the iterator with new values.

  Thank you all for your answers.

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  i was working on JDeveloper 11.1.2.3
  
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  I used the code below in the AMimpl.java and calling this method during the click on the button Search my Search Page.

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