How to add a column of checkboxes in a table?

Question

Hello, can anyone help me with this?
I'm using myfaces , and I want to add a selectManyCheckBox inside a table, in order to select multi-row of the
table.
My code didn't work. It seems that I can only use static values for the 'itemValue' attribute of <f:selectItem> tag.
May someone give me some suggestion?
Here is my page:
<f:view>
<x:saveState value="#{fishSalesBean}"></x:saveState>
<h:form>
<h:panelGrid columns="1" columnClasses="first, first, first, first">
<x:dataTable id="dataTable" value="#{fishSalesBean.fishes}" var="fish"
width="800" columnClasses="first, first, first, first" binding="#{fishSalesBean.dataTable}">
<h:column>
<f:facet name="header">
<h:outputText value="Select"/>
</f:facet>
<x:selectManyCheckbox id="checkboxes" layout="pageDirection" value="#{fishSalesBean.selected}">
<f:selectItem itemValue="#{fishSalesBean.dataTable.rowIndex}" itemLabel=" a"/>
</x:selectManyCheckbox>
</h:column>
<h:column>
<f:facet name="header">
<h:outputText value="FishName"/>
</f:facet>
<h:outputText value="#{fish.name}"></h:outputText>
</h:column>
<h:column>
<f:facet name="header">
<h:outputText value="picture"/>
</f:facet>
<h:graphicImage value="#{fish.picUrl }" />
</h:column>
<h:column>
<f:facet name="header">
<h:outputText value="price"/>
</f:facet>
<h:outputText value="#{fish.price}"></h:outputText>
</h:column>
<h:column>
<f:facet name="header">
<h:outputText value="isSold"/>
</f:facet>
<h:outputText value="#{fish.sold}"></h:outputText>
</h:column>
</x:dataTable>
<h:commandButton value="Show Selected" action="#{fishSalesBean.showSelected}"></h:commandButton>
</h:panelGrid>
</h:form>
</f:view>

Answer 1

Check the "Select multiple rows" chapter of this article for 2 ways of selecting multiple rows in a table using checkboxes: http://balusc.blogspot.com/2006/06/using-datatables.html