Setting current row using a string key in an iterator

Question

Hi ,
I am using Studio Edition Version 11.1.1.6.0 and integrated wls.
QUESTION:_
As suggested by Sudipto i want to brief up my query.
I have a master-detail relationship .Using that relation's Tree model i am displaying through an <af:iterator> . I want to set the current row in the iterator of the parent view object . Is there a way please help .
Description:_
I have 2 master-details tables . FormSections is the mater and SectionContents is the child.
I have an use case and using the tree collection model in an iterator to display the nodes.The jsf page has the following markup
<iterator id="i1" value="#{bindings.FormSectionsView1.collectionModel}"
var="section">
<decorativeBox id="db2">
<facet name="top">
<commandLink text="#{section.Sectionname}" id="cl1">
<showPopupBehavior triggerType="action" popupId="p1"/>
</commandLink>
</facet>
<facet name="center">
<iterator id="i2" value="#{section.children}" var="field">
<outputText value="#{field.Fieldlabel}" id="ot3"/>
</iterator>
</facet>
</decorativeBox>
</iterator>
on the popup p1 i have #{DesignBean.createField} popupfetch listener.Now i want to insert a new row in the child when i click on the commandlink.
I have tried the following
1) Tried binding setCurrentRowWithKey and setCurrentRowWithKeyValue (namedvalue as #{section.Sectionid}) but there was no change i get the current row set to empty
2) Tried using the following bean codes
a) DCBindingContainer bindings =
(DCBindingContainer)BindingContext.getCurrent().getCurrentBindingsEntry();
DCIteratorBinding sectionsIterator =
(DCIteratorBinding)bindings.get("FormSectionsView1Iterator");
System.out.println(sectionsIterator.getCurrentRow());
String key_str="21";
sectionsIterator.setCurrentRowWithKeyValue(key_str);
          executeOperationBindings("CreateInsert1");// child createinsert binding execution
     b)     DCBindingContainer bindings =
(DCBindingContainer)BindingContext.getCurrent().getCurrentBindingsEntry();
DCIteratorBinding sectionsIterator =
(DCIteratorBinding)bindings.get("FormSectionsView1Iterator");
System.out.println(sectionsIterator.getCurrentRow());
String key_str="21";
Key key=sectionsIterator.createKey(key_str);
if(key!=null)
sectionsIterator.setCurrentRowWithKey(key.toStringFormat(true));
          executeOperationBindings("CreateInsert1");
          Now i have a problem of setting the parent to the current row on the iterator of the parent i am getting null pointer exception when tried to set the key.
Thanks,
Raj
Edited by: RajaSekharReddy.M on Jan 30, 2013 6:11 AM
Edited by: RajaSekharReddy.M on Jan 31, 2013 4:39 AM

Answer 1

Rajasekhar ,
What model layer do you use ? If ADF BC then shouldn't the parent child relationship already been defined as a View Link ?
Also I'm a little confused as to why you are setting a hardcoded the key with a string , since you are clicking the command link from the row , you should be accessing it as
#{section.sectionId}
Also I didnot understand this line-
Now i have a problem of setting the parent to the current row on the iterator of the parent i am getting null pointer exception when tried to set the key.A small tip is you can start giving briefly what you are trying to achieve and whats failing to get accurate replies . Please refer -
https://forums.oracle.com/forums/ann.jspa?annID=56