A few weeks ago I wrote about how to highlight related detail records.  That solution worked very well, but turned out to be not as fancy as expected. I needed to be able to implement multiple selection in the master as well. That turned out to be not very simple but I managed to end up with having a multi-master / multi-detail implementation. In this post I show you how I did that. First I had to enable multiple selection on the master table (Countries). To achieve this I had to remove the selectionListener and the selectedRowKeys. I also set rowSelection="multiple". The JSF code for the table now is : 1:  <af:table rows="#{bindings.CountriesView2.rangeSize}"  2:          fetchSize="#{bindings.CountriesView2.rangeSize}"  3:          emptyText="#{bindings.CountriesView2.viewable ? 'No data to display.' : 'Access Denied.'}"  4:          var="row"  5:          value="#{bindings.CountriesView2.collectionModel}"...
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