rich:columns doubt

[jgromero]

Hi

I´m just starting with richfaces... by the way, beautiful job!

I've been searching for several hours the right way to use rich:columns, but I just don't get what I'm doing wrong. Here's the case:

                     <rich:dataTable value="#{listHistResults.resultArea}" var="result" width="500">

                        <rich:columns value="#{listHistResults.areas}" var="area">

                            <f:facet name="header">

                                <h:outputText value="#{area}" />

                            </f:facet>

                            <h:outputText value="#{result} " />

                        </rich:columns>

                    </rich:dataTable>

As you can see this is something really simple.

resultArea is an ArrayList of String. area is another an ArrayList of String.

In an example run I obtain:

area 1	area 2	area 3
result1	result1	result1
result2	result2	result2
result3	result3	result3

Reading I believed that the right way could be:

                    <rich:dataTable value="#{listHistResults.resultArea}" var="result" width="500">

                        <rich:columns value="#{listHistResults.areas}" var="area" index="ind" id="area#{ind}">

                            <f:facet name="header">

                                <h:outputText value="#{area}" />

                            </f:facet>

                            <h:outputText value="#{result[ind]} " />

                        </rich:columns>

                    </rich:dataTable>

but obviously when try to iterate through result it gives me an exception, with the message:

     The class 'java.lang.String' does not have the property '0'

So, believing I finally understands it, I try declaring resultArea as an ArrayList of an ArrayList of String, but I obtained:

area 1	area 2	area 3
result1
result2
result3

What I'm looking for here is a one line table.

I'm sure I haven't been able to understand something, but I just don't get what is it, and that's why I ask here for some guidance.

On the other hand, I'm not sure but the url which explains rich:columns have some mistakes?. I mean, in subsection 6.6.3.3, the explanations mention the attributes "begin", "end" among others that are not used in the example.

http://docs.jboss.org/richfaces/latest_3_3_X/en/devguide/html/rich_columns.html

Finally, surfing the svn repository, looking for the source of the demo, I didn´t found anything related to the example of types and models of cars in

http://livedemo.exadel.com/richfaces-demo/richfaces/columns.jsf;jsessionid=F865F5BF4143D6EE22DC07FDDB4CE6EE?c=columns&tab=usage

I mean, the java source, because in the page there's the source of the page.

Thanks in advance for reading my post, and for any help you can give me.

Juan Romero

[jgromero]

My fault:

I believe (I don't know why.... or why not) each inner List in results match each index in datatable (each outer list fills a column). Something like this:

        List<String> areas = new ArrayList<String>();

        List<List<String>> results = new ArrayList<List<String>>();

        for (Area a : getAreas()){

            for (ResultArea ra : results.getResultAreas()){

                if (ra.getArea().getAreaId() == a.getAreaId()){

                    List<String> resultadoArea = new ArrayList<String>();

                    areas.add(a.getDescripcion());

                    resultadoArea.add("" + ra.getValor());

                }...

            }...

        }...

But the true is each outer list will fill a row. Something like:

        List<String> areas = new ArrayList<String>();

        List<List<String>> results = new ArrayList<List<String>>();

        List<String> resultadoArea = new ArrayList<String>();

        for (Area a : getAreas()){

            for (ResultArea ra : results.getResultAreas()){

                if (ra.getArea().getAreaId() == a.getAreaId()){

                    areas.add(a.getDescripcion());

                    resultadoArea.add("" + ra.getValor());

                }...

            }...

        }...

And the rest is just fine... Hopefully I'm being clear, just in case someone gets the same problem