I found the example about extern filtering of DataTable on

http://livedemo.exadel.com/richfaces-demo/richfaces/filteringFeature.jsf?tab=ex-usage&cid=121451.

I saw, that the filter Method take a Objectvalue.

public boolean filterStates(Object current) {
        Capital currentCapital = (Capital)current;
        if (filterValue.length()==0) {
            return true;
        }
        if (currentCapital.getState().toLowerCase().startsWith(filterValue.toLowerCase())) {
            return true;
        }else {
            return false;
        }
    }

and this method is used in jsp. like <rich:column filterMethod="#{filteringBean.filterStates}">

In my case I use dynamic creating of the table with <rich:columns

without filterMethod I made:

<rich:columns id="col_#{col}" value="#{searchModul.columns}"
                 var="col" index="ind"
                 filterBy="#{data[ind]}" filterEvent="onkeyup" sortBy="#{data[ind]}"
                 sortOrder="#{searchModul.sortOrders[col]}"
                filterValue="#{searchModul.columnFilterValues[col]}">

with Bean:

public Map<String, Object> getColumnFilterValues() {
        return columnFilterValues;
    }

    public void setColumnFilterValues(Map<String, Object> columnFilterValues) {
        this.columnFilterValues = columnFilterValues;
    }

how should it work with filterMethod ????

wich parameter should I provide to my Bean-method?

should it looks like this:

public boolean filterStates(Map<String, Object> columnFilterValues) {          ????????????

and then?

thank you for your answer.