I have try to custom a filter like following

<rich:column sortBy="#{report.dispReportName}" filterMethod="#{viewReportBean.filterStates}">

                                    <f:facet name="header">

                                         <h:panelGroup>

                                              Report Name

                                        <h:inputText value="#{viewReportBean.filterValue}" id="input"  onclick="Event.stop(event);">

                                             <a4j:support event="onblur" reRender="resultTable,ds"

                                            ignoreDupResponses="true" requestDelay="700"

                                            />

                                         </h:inputText>

                                         </h:panelGroup>

                                    </f:facet>

                                    <h:outputText value="#{report.dispReportName}"/>

  </rich:column>

I key-in the filter, then filtered data show.  And I click the sorting icon,  i don't know why the table list all result (ignore the filter).

as i click sorting icon, How can I just sort the filtered data? not all data?

Please Help.Thanks.