public boolean evaluate(final Object o) {
if (null == items || null == o) {
return false;
}
final Collection input;
if (o instanceof String) {
final HashSet<String> hs = new HashSet<String>();
// treat o as comma-seperated list of strings
final String str = (String) o;
final String[] split = str.split(",");
for (final String s : split) {
hs.add(s.trim());
}
input = hs;
} else if (o instanceof Collection) {
input = (Collection) o;
} else {
return false;
}
return CollectionUtils.isSubCollection(items, input);
}
/**
* Show the given entities in a table.
*
* <p>When dealing with <code>EventList</code> performance is important. This method ensures table
* model events are launched just once at the end.
*
* @param <Q> the type of the rows.
* @param tableModel the table model.
* @param entities the entities to be shown.
* @param attach whether to attach new entities to currents. If <code>false</code> currents are
* replaced.
* @return <code>true</code> if success and <code>false</code> in other case (i.e.:user rejected
* change).
*/
@SuppressWarnings("unchecked")
public static <Q> Boolean showEntities(
GlazedTableModel tableModel, final List<Q> entities, final Boolean attach) {
Assert.notNull(tableModel, TableUtils.TABLE_MODEL);
Assert.notNull(entities, "entities");
Assert.notNull(attach, "attach");
final EventList<Q> eventList = TableUtils.getSource(tableModel);
// Proceed only if ...
final Boolean proceed;
if (attach) {
// ... must attach and entities are not contained in eventList or...
proceed = !CollectionUtils.isSubCollection(entities, eventList);
} else {
// ... must replace and entities are not equals to eventList
proceed = !CollectionUtils.isEqualCollection(entities, eventList);
}
if (proceed) {
if (TableUtils.LOGGER.isDebugEnabled()) {
TableUtils.LOGGER.debug("About to show entities " + entities);
}
// Avoid notifying in every single change, instead do it at the end
final TableModelListener[] listeners = tableModel.getTableModelListeners();
for (final TableModelListener listener : listeners) {
tableModel.removeTableModelListener(listener);
}
SwingUtils.runInEventDispatcherThread(
new Runnable() {
@Override
public void run() {
// Update the contents of the event list
eventList.getReadWriteLock().writeLock().lock();
try {
if (!attach) {
eventList.clear();
}
eventList.addAll(eventList.size(), CollectionUtils.subtract(entities, eventList));
} finally {
// Since Swing is multithread we need to lock before and unlock later
// http://sites.google.com/site/glazedlists/documentation/faq
eventList.getReadWriteLock().writeLock().unlock();
}
}
});
// Enable notifying: install listeners again
for (final TableModelListener listener : listeners) {
tableModel.addTableModelListener(listener);
}
// Since listeners were uninstalled notification should be explicit
tableModel.fireTableDataChanged();
}
return proceed;
}
