/**
* The base method to perform iteration. Also reset all inner variables when 'index' is null.
*
* @param index index of row or
*/
private void setIndex(Integer index) {
if (index == null) {
reset();
} else {
saveChildrenState();
this.index = index;
data = getData();
if (data != null) data.setRowIndex(this.index);
setIterationStatus();
putVariables();
restoreChildrenState();
}
}
/**
* reset inner variables and remove 'var' and 'varStatus' from requestMap. This method must been
* called at the start of iteration and at the end.
*/
private void reset() {
saveChildrenState();
index = null;
data = null;
status = null;
if (childrenOriginalState != null) restoreChildrenState();
childrenOriginalState = null;
FacesContext context = FacesContext.getCurrentInstance();
Map<String, Object> requestMap = context.getExternalContext().getRequestMap();
String var = getVar();
String varStatus = getVarStatus();
if (var != null) requestMap.remove(var);
if (varStatus != null) requestMap.remove(varStatus);
}