Bug with af:forEach used in af:table

Question

Hi everybody
I am facing a strange bug using af:forEach into an af:table
My table is displaying a treelike structure as columns and i am using 2 forEach elements to construct the af:columns object.
<af:table value="#{viewScope.backing_foreach.rows}" var="row"
                        width="100%"
                        binding="#{viewScope.backing_foreach.tablecomp}">
                <af:column headerText="name">
                  <af:outputText value="#{row.name}"/>
                </af:column>
                <af:forEach items="#{viewScope.backing_foreach.cols.children}"
                            var="level1">
                  <af:column headerText="#{level1.userObject}"
                             id="col_lvl1_tab1" align="center" frozen="true">
                    <af:forEach items="#{level1.children}" var="level2">
                      <af:column headerText="#{level2.userObject}"
                                 id="col_lvl2_tab1" align="center"
                                 frozen="true">
                        <af:inputText/>
                      </af:column>
                    </af:forEach>
                  </af:column>
                </af:forEach>
              </af:table>My table after a basic initialization looks like
-Node 1 
---Node 1-1
---Node 1-2
-Node 2
---Node 2-1If i a look to varStatus from the forEach variable i can see the values above:
-Node 1        => 1st forEach end=1 index=0  first=true last=false
---Node 1-1   => 2nd forEach end=1 index=0 first=true last=false
---Node 1-2   => 2nd forEach end=1 index=1 first=false last=true
-Node 2        => 1st forEach end=1 index=1  first=false last=true
---Node 2-1   => 2nd forEach end=0 index=0 first=true last=trueAll is working well until i had a new element in the tree structure and ask a refresh for the table:
    public void actionAddLevel2(ActionEvent actionEvent) {
        cols.getChild(0).addChild("NEW!");
        AdfFacesContext.getCurrentInstance().addPartialTarget(getTablecomp());
    }After the refresh i see the columns with the structure above
-Node 1 
---Node 1-1
---Node 1-2
---NEW!
-Node 2
---Node 2-1
---Node 2-1The new sub column is correctly insert but the forEach used to construct level 2 columns seems to be executed twice for the second level 1 column (Node 2) and i have the same object on the 2nl level repeat twice (Node 2-1)
If i a look to varStatus from the forEach variable i can see the values above:
-Node 1        => 1st forEach end=1 index=0  first=true last=false
---Node 1-1   => 2nd forEach end=1 index=0 first=true last=false
---Node 1-2   => 2nd forEach end=1 index=1 first=false last=true
---NEW!        => 2nd forEach end=2 index=2 first=false last=true
-Node 2        => 1st forEach end=1 index=1  first=false last=true
---Node 2-1   => 2nd forEach end=0 index=0 first=true last=true
---Node 2-1   => 2nd forEach end=0 index=0 first=true last=trueI have made a simple test case to reproduce this bug but i don't know how to upload the zip on this forum
I am using JDevelopper 11.1.1.2
Does anyone as an idea to solve this?
Thanks!
Edited by: Olivier MARTIN on Jul 22, 2010 8:02 AM

Answer 1

Olivier,
before to refresh the page or table remove the dynamic columns in foreach for example in your testcase the second and third columns
Change the method from action Listener to action
public void actionAddLevel2() {
cols.getChild(0).addChild("NEW!");
// the top columns in foreach
getTablecomp().getChildren().remove(1);
getTablecomp().getChildren().remove(1);
return null;
The workaround I found to resolve this issue otherwise you can build your table using the binding methods
for (TreeNode header : cols.getChildren()) {
RichColumn col =
(RichColumn)app.createComponent(RichColumn.COMPONENT_TYPE);
col.setId("rowheader" + colAdded);
col.setHeaderText(header.getUserObject().toString());
for (TreeNode subheader : header.getChildren()) {
RichColumn subcol =
(RichColumn)app.createComponent(RichColumn.COMPONENT_TYPE);
subcol.setId("subheader" + colAdded);
subcol.setHeaderText(subheader.getUserObject().toString());
RichOutputText cell =
(RichOutputText)app.createComponent(RichOutputText.COMPONENT_TYPE);
cell.setId("rowcell" + colAdded);
cell.setValue("test");
subcol.getChildren().add(cell);
col.getChildren().add(subcol);
tablecomp.getChildren().add(col);
colAdded++;
Hope this help,
Maroun
Edited by: Maroun Imad on Sep 21, 2010 3:02 AM