// eg. value="someAction.action?id=someId&venue=someVenue"
// with parameters specified though param tag
// eg. <param name="id" value="%{'someId'}" />
// where parameters specified through param tag takes priority.
for (Iterator iterator = mergedParams.entrySet().iterator(); iterator.hasNext();) {
Map.Entry entry = (Map.Entry) iterator.next();
Object key = entry.getKey();
if (!parameters.containsKey(key)) {
parameters.put(key, entry.getValue());