Expand and Collapse an af:treeTable programmatically in ADF Faces (Oracle ADF)

Hello all,
this is simple tutorial about expanding and collapsing an af:treeTable using managed bean code (programmatically)
sometimes we need to expand or collapse treeTable on some button action or on valueChangeEvent.

Steps-

• Create binding of treeTable in managed bean

 private RichTreeTable soTreeTableBind;
     public void setSoTreeTableBind(RichTreeTable soTreeTableBind) {
        this.soTreeTableBind = soTreeTableBind;
    }

    public RichTreeTable getSoTreeTableBind() {
        return soTreeTableBind;
    }



• Now Call this method on any action to expand treeTable



private RowKeySet disclosedTreeRowKeySet = new RowKeySetImpl();






    /***Method to expand all tree table nodes*/
    private void expandTreeTable() {
        if (this.soTreeTableBind != null) {
            disclosedTreeRowKeySet = new RowKeySetImpl();
            CollectionModel model = (CollectionModel)soTreeTableBind.getValue();
            JUCtrlHierBinding treeBinding = (JUCtrlHierBinding)model.getWrappedData();
            JUCtrlHierNodeBinding rootNode = treeBinding.getRootNodeBinding();
            disclosedTreeRowKeySet = soTreeTableBind.getDisclosedRowKeys();
            if (disclosedTreeRowKeySet == null) {
                disclosedTreeRowKeySet = new RowKeySetImpl();
            }
            List<JUCtrlHierNodeBinding> firstLevelChildren = rootNode.getChildren();
            for (JUCtrlHierNodeBinding node : firstLevelChildren) {
                ArrayList list = new ArrayList();
                list.add(node.getRowKey());
                disclosedTreeRowKeySet.add(list);
                expandTreeChildrenNode(soTreeTableBind, node, list);
            }
            soTreeTableBind.setDisclosedRowKeys(disclosedTreeRowKeySet);
        }
    }
/**Method to expand childs*/
    private void expandTreeChildrenNode(RichTreeTable rt, JUCtrlHierNodeBinding node, List<Key> parentRowKey) {
        ArrayList children = node.getChildren();
        List<Key> rowKey;
        if (children != null) {
            for (int i = 0; i < children.size(); i++) {
                rowKey = new ArrayList<Key>();
                rowKey.addAll(parentRowKey);
                rowKey.add(((JUCtrlHierNodeBinding)children.get(i)).getRowKey());
                disclosedTreeRowKeySet.add(rowKey);
                if (((JUCtrlHierNodeBinding)(children.get(i))).getChildren() == null)
                    continue;
                expandTreeChildrenNode(rt, (JUCtrlHierNodeBinding)(node.getChildren().get(i)), rowKey);
            }
        }
    }



• To collapse treeTable ,use this code snippet on any event



    /**Collapse TreeTable
     * @param actionEvent
     */
    public void collapseTreeTableAction(ActionEvent actionEvent) {
        soTreeTableBind.getDisclosedRowKeys().clear();
        AdfFacesContext.getCurrentInstance().addPartialTarget(soTreeTableBind);
    }

Refreshing Child Nodes of an af:treeTable / af:tree in Oracle ADF

Hello All,
A very common problem in ADF treeTable and tree is to refresh child nodes after any DML operation on tree.
to avoid this refresh problem developer can pragmatically refresh treeTable's child node.

• First get the master ViewObject on that treeTable is based
• if viewObject has any key attribute then filter it against a key for that you want to refresh child nodes
• if viewObject doesn't have any key attribute, then filter it using any unique key to get header(master) row
• get the rowset of child rows for that key, using viewlink accessor
• and execute query for Child Rows rowset
• see the refreshed child node :-)

Code- Using Key Attribute

// Get Master ViewObject
    ViewObjectImpl viewObj = masterViewObject;  
    // Filter It Using Key Attribute
  Row[] grpRow = vo.findByKey(new Key(new Object[] { keyAttribute Value }), 1);  
       // Get Child Rows using ViewLink Accessor
        if(grpRow.length>0){
        RowSet childRows = (RowSet)grpRow[0].getAttribute("viewLink AccessorName");  
  //Execute Child Rowset
        childRows.executeQuery();  
        }

Using Unique Key

      // Get Master ViewObject
    ViewObjectImpl viewObj = masterViewObject;  
    // Filter It Using Key Attribute
   Row[] grpRow=viewObj.getFilteredRows("uniqueKey", uniqueKey Value); 
       // Get Child Rows using ViewLink Accessor
        if(grpRow.length>0){
        RowSet childRows = (RowSet)grpRow[0].getAttribute("viewLink AccessorName");  
  //Execute Child Rowset
        childRows.executeQuery();  
        }
  

Somo more blogs on tree table
Programmatically refreshing the child nodes of an <af:tree>
Tree Table Component in Oracle ADF(Hierarchical Representation)
Implementing master/detail tree relation using af:Iterator and af:forEach for better UI designs - Oracle ADF 
Tree Table Component with declarative presentation in ADF, Access childs without custom selection listener
CRUD operations on a tree table
Tree Table Component in Oracle ADF

Cheers :-)

Dynamically enable or disable items of ADF bound List (af:selectOneChoice) -Oracle ADF

Hello All,
This tutorial is about a requirement of conditionally enabling/disabling items (values) of adf bound List (af:selectOneChoice) component
here i am taking reference of default HR Schema (Departments and Location table )

See the steps-

• Create a Fusion Web Application and business components using both tables

•  Now create List of Values (Lov) on locationId of departments VO from Location VO

• Set List Attribute to LocationId and for UI city will be shown

• Now Drag Departments VO from Data Control on page as a form

•  Select LocationId list field and delete f:selectItems from it, now drag af:selectItem as child of af:selectOneChoice and surround it with af:forEach 

• Add tree binding of Location ViewObject to page bindings in order to populate list items using forEach

•  Now select af:forEach and set its property and variable name, as we have to iterate through Location VO for list items

•  Again select af:selectItem and set its value and label property using forEach variable's  

• Now run your application, and see that list box is ready with values

• Now we have to disable its values as a condition basis, i have written an Expression on af:selectItem's disabled property
  
  
  
  


• I have written condition for DepartmentId 100 and 110, see in source of page



<af:selectOneChoice value="#{bindings.LocationId.inputValue}" label="#{bindings.LocationId.label}"
                                        required="#{bindings.LocationId.hints.mandatory}"
                                        shortDesc="#{bindings.LocationId.hints.tooltip}" id="soc1"
                                        contentStyle="width:150px;color:red;">
                        <af:forEach items="#{bindings.Locations1.rangeSet}" var="list">
                            <af:selectItem label="#{list.City}" id="si1" value="#{list.LocationId}"
                                           disabled="#{ (bindings.DepartmentId.inputValue==100 and (list.LocationId==1000 || list.LocationId==1300)) || (bindings.DepartmentId.inputValue==110 and (list.LocationId==1500 || list.LocationId==1600 || list.LocationId==1700 || list.LocationId==1800 || list.LocationId==1900))}"/>
                        </af:forEach>
                    </af:selectOneChoice>



• Now value given in Expression for Location Id will be disabled for given Department
• Run your page and select DepartmentId 100 and 110 to see disabled list items

 Download Sample App Cheers :-)