/**
* Receives notification that the report has started.
*
* @param event the event.
*/
public void reportStarted(final ReportEvent event) {
if (event.isDeepTraversing()) {
return;
}
pageFunction.reportStarted(event);
}
/**
* Return a completly separated copy of this function. The copy does no longer share any
* changeable objects with the original function.
*
* @return a copy of this function.
*/
public Expression getInstance() {
final IndexDataGeneratorFunction instance = (IndexDataGeneratorFunction) super.getInstance();
instance.model = new TypedTableModel();
instance.pageFunction = (PageFunction) pageFunction.getInstance();
instance.dataFormula = (FormulaExpression) dataFormula.getInstance();
instance.dataStorage = new TreeMap<String, IndexDataHolder>();
instance.initialized = false;
return instance;
}
/**
* Receives notification that report generation initializes the current run.
*
* <p>The event carries a ReportState.Started state. Use this to initialize the report.
*
* @param event The event.
*/
public void reportInitialized(final ReportEvent event) {
if (event.isDeepTraversing()) {
return;
}
if (initialized == false) {
initialized = true;
model.addColumn("item-data", Object.class);
model.addColumn("item-pages", String.class);
model.addColumn("item-pages-array", Integer[].class);
model.addColumn("item-key", String.class);
}
pageFunction.reportInitialized(event);
}
/**
* 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());
}
}
/**
* Clones the expression. The expression should be reinitialized after the cloning.
*
* <p>Expressions maintain no state, cloning is done at the beginning of the report processing to
* disconnect the expression from any other object space.
*
* @return a clone of this expression.
* @throws CloneNotSupportedException this should never happen.
*/
public Object clone() throws CloneNotSupportedException {
final IndexDataGeneratorFunction o = (IndexDataGeneratorFunction) super.clone();
o.dataFormula = (FormulaExpression) dataFormula.clone();
o.pageFunction = (PageFunction) pageFunction.clone();
return o;
}
/**
* Receives notification that a page is completed.
*
* @param event The event.
*/
public void pageFinished(final ReportEvent event) {
pageFunction.pageFinished(event);
}
/**
* Receives notification that a new page is being started.
*
* @param event The event.
*/
public void pageStarted(final ReportEvent event) {
pageFunction.pageStarted(event);
}