ADF Code corner #50 - tree selection listener Table do not save the State of the

Hello world

With the help of JDev Studio Edition Version 11.1.1.3.0

I have a table of tree using the earphone generic selection based on the excellent article by Frank Nimphius during synchronization of forms for entries of tree node edit. http://www.Oracle.com/technetwork/developer-tools/ADF/learnmore/50-synchromize-form-TreeSelection-169192.PDF

My problem:

My selectedNodeRowKey and selectedNodeRowIterator variables are turning to null out the listener.

Process and code:

I select a node. It called the selection event of onTreeSelect, which in turn saves the node key and the iterator in the same support bean backingBeanScope value.

      DCIteratorBinding _treeIteratorBinding = null;
      _treeIteratorBinding = treeBinding.getDCIteratorBinding();
//Frank's code above ...

      this.selectedNodeRowKey = nodeBinding.getRowKey();
      for (Object opaqueFacesKey: treeTable.getSelectedRowKeys())
      {
        treeTable.setRowKey(opaqueFacesKey);
        this.selectedNodeRowIterator =
            ((JUCtrlHierNodeBinding) treeTable.getRowData()).getRowIterator();
      }

      System.out.println();
      System.out.println("Update Key: " + this.selectedNodeRowKey);
      System.out.println("Update Ite: " + this.selectedNodeRowIterator);

//Frank's code resumes ...
      Row[] found =
        this.selectedNodeRowIterator.findByKey(this.selectedNodeRowKey, 1);

Then, I click on a button that calls an actionListener in the same bean support.

  public void onButtonRemove(ActionEvent actionEvent)
  {
    System.out.println("Remove button pressed.");

    BindingContainer bindings = getBindings();

    System.out.println(this.selectedNodeRowKey);
    System.out.println(this.selectedNodeRowIterator);

    OperationBinding operationBinding =
      bindings.getOperationBinding("deleteChildren");
    operationBinding.execute();
    System.out.println("Remove complete");
  }

This gives me the result

Update Key: oracle.jbo.Key[112 ]
Update Ite: oracle.jbo.server.ViewRowSetImpl@aa641d
bos.model.queries.TbomView

Remove button pressed.
null
null
Remove complete

What happened to my values and node iterator? I guess it has something to do with a scope or something similar to C++ through reference instead of the value. The strange thing is, the default MakeCurrent onSelection the auditor's work, but use this generic listener and values change.

Published by: LovettWB on December 21, 2010 14:51

Hello

You can try setting the bean to the session scope? I guess it works, which brings me to my main point. If the managed bean is used in a stubborn workflow (which I assume you are referring to the use of fragments of page jsff), make sure that it is also defined in the workflow definition and not adfc-config. Personally, I like to feel it is best to set the bean managed in the metadata scopes, in which it is used. So could already solve the problem

Frank

Tags: Java

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ADF Code corner #50 - tree selection listener Table do not save the State of the

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