rich:dataTable, rich:column and sortExpression

[jobb]

Hi,
Can anyone explain me how to sort data in a dataTable clicking on header ?
Should I use my own Comparator or not ?

My code are :

<rich:dataTable width="700px" id="productTabell" rows="20"
 value="#{productCatalogMBean.products}" var="product" >
 <rich:column id="produktnr" sortExpression="#{product.productCode}" sortable="true">
 <f:facet name="header"><h:outputText value="Produktnr." styleClass="headerText" /></f:facet>
 <h:outputText value="#{product.productCode}" />
 </rich:column>
 <rich:column id="Produktnavn" sortExpression="#{product.name}">
 <f:facet name="header"><h:outputText value="Produktnavn" styleClass="headerText" /></f:facet>
 <h:outputText value="#{product.name}" />
 </rich:column>
</rich:dataTable>

[martin.ahrer]

You should try using the http://livedemo.exadel.com/richfaces-demo/richfaces/scrollableDataTable.jsf

[jobb]

Sorry, it seems to me that there is not the same problem. scrollableDataTable has other tags to handle sorting like sortMode, columns has no sortExpression and DataTableScrollerBean has no sort code what so ever.

When I look at generating html, nothing from AbstractTableRenderer.java is placed in a code e.g. columnHeaderClass = "dr-table-header-sort-up "....

[martin.ahrer]

Look at this posting where sorting with scrollableDataTable is discussed!
http://jboss.com/index.html?module=bb&op=viewtopic&t=129776
The sort related attributes are implemented by rich:column

[jobb]

Hi Martin
Thanks for you tips. I will investigate my code closer, but tell me one ting : should sort works in dataTable/rich:column only by using sortExpression="#{product.name}" or is there the same problem as you fixed for expression using (#{office.enterprise.description}) which is never evaluated as a EL expression.

[martin.ahrer]

As far as I know it works with simple properties (e.g. managedbean.property) but not nested properties (e.g managedbean.property.property...)

[jobb]

Wait a minute, you wrote managedbean.property : should I have a property 'name' and 'productCode' in my productCatalogMBean with getter/setter ? I've used sortExpression="#{product.name}" means var="product" from dataTable (data object for the current row) with property 'name' and 'productCode' ?