ExtendedDataModel / arrangeableState always set to null

[fred-at-coding]

Hi all,

Having seen the sample of the richfaces 4 online demo, i was interested by the filtering/sorting on the server side.

The sample with the ExtendedDataModel is very fine, but i ve lot of difficulty to implement it.

In the JPADataModel class, the method 'arrange' is used to set the arrangeableState variable. But In my case, this value is always set to NULL.

Anybody has an idea ? Or anybody seen this problem ?

It s very blocking When the method createcountcriteria is called. It always raise an null pointer exception.

Thanks

[nbelaevski]

Hi Fred,

Please check that you have defined all necessary component attributes on the page (refer to demo example).

[fred-at-coding]

Hi Nick,

thanks for your reply. Unfortunely I haven't seen your response, so i'm late

here is my code (i've tested it with 4.0.0 final, 4.0.1-SNAPSHOT, 4.1.0-SNAPSHOT)

<h:form id="AuthorForm">

<a4j:outputPanel id="sample1"> 

  <rich:dataTable id="AuthorDataTable1" rows="10" value="#{MB_Author_Dev.authorDataModel}" var="author" keepSaved="true" iterationStatusVar="iteratorIndex">

  <rich:column

                    sortBy="name"

                    sortOrder="#{MB_Author_Dev.sortOrders['name']}"

                    filterExpression="name"

                    filterValue="#{MB_Author_Dev.filterValues['name']}">

   <f:facet name="header">

    <h:inputText id="filteringName" name="filteringName" value="#{MB_Author_Dev.filterValues['name']}"/>

   </f:facet> 

    <h:outputText value="#{author.name} #{author.firstname}" id="author_row_id"/>

  </rich:column>

    <f:facet name="footer">

     <rich:dataScroller for="AuthorDataTable1" maxPages="10" id="AuthorDataTableDataScroller1" render="AuthorDataTable1"/>

    </f:facet> 

   </rich:dataTable>

  </a4j:outputPanel> 

</h:form>

Do you think I've missed some fields?

The back code is the same as your example. The only thing I've changed:

    @Override

    public void arrange(FacesContext context, ArrangeableState state) {

     syslog.info("[XdDataScroller,arrange] - this method was invoked, state=" + state);

                 arrangeableState = state;

    }

the log is always saying: state=NULL ...

Thanks again Nick.

Regards Fred

[fred-at-coding]

Nick,

  one precision. I've copied/paste some of your code. It's working... the state is NOT null.

"

INFO: [XdDataScroller,arrange] - this method was invoked, state=org.richfaces.model.ArrangeableStateDefaultImpl@a4b975

"

You were right. But I don't see my mistake. It's working when I use the "JPAColumn.xhtml" code. I'll check it.

Thanks again

Best Regards

Fred

[fred-at-coding]

Hi,

i've found it.

Instead of:

<rich:column

                    sortBy="name"

                    sortOrder="#{MB_Author_Dev.sortOrders['name']}"

                    filterExpression="name"

                    filterValue="#{MB_Author_Dev.filterValues['name']}">

...

</rich:column>

it 's better to do:

<rich:column

                                                                                sortBy="#{name}"

  sortOrder="#{MB_Author_Dev.sortOrders[name]}"

  filterValue="#{MB_Author_Dev.filterValues[name]}"

  filterExpression="#{name}"

                                                                                >

...

</rich:column>

Fred

[kiler]

Hi,

Could you explain when the arrange method is called or by which component ? If I good understend this method set arrangeableState variable, if so, how to call it ?

A lot fo Thanks for any answer.

Any one can help ??

Thanks,

Kiler

[kiler]

Hi Nick,

Which of component attributes do you exactly think ?

I have still this problem, because arrange method is never call and arrangeableState is set to null.

[yan.langlois]

Hi,

The method arrange is called only if your dataModel implements Arrangeable. The component attributes are filterValue and filterExpression of the <rich:column />