/**
* Receives notification that a row of data is being processed.
*
* @param event the event.
*/
public void itemsAdvanced(final ReportEvent event) {
if (event.isDeepTraversing()) {
if ("index".equals(event.getOriginatingState().getReport().getMetaData().getName())) {
return;
}
}
final Object o = computeDataValue(event);
if (o == null) {
return;
}
if (FunctionUtilities.isDefinedPrepareRunLevel(this, event)) {
dataStorage.put(String.valueOf(o), new IndexDataHolder(o));
} else if (FunctionUtilities.isLayoutLevel(event)) {
final IndexDataHolder o1 = dataStorage.get(String.valueOf(o));
if (o1 == null) {
throw new IllegalStateException(
"Unable to compute index: Function values changed between prepare and layout run");
}
o1.addPage(pageFunction.getPage());
}
}
