public void hintsToPageParameters(Map<String, String> hints, PageParameters pageParameters) {
if (hints.isEmpty()) {
return;
}
MementoServiceDefault vms = new MementoServiceDefault();
Memento memento = vms.create();
Set<String> hintKeys = hints.keySet();
for (String key : hintKeys) {
String safeKey = key.replace(':', '_');
Serializable value = hints.get(key);
memento.set(safeKey, value);
}
String serializedHints = memento.asString();
PageParameterNames.ANCHOR.addStringTo(pageParameters, serializedHints);
}
public void pageParametersToHints(
final PageParameters pageParameters, Map<String, String> hints) {
String hintsStr = PageParameterNames.ANCHOR.getStringFrom(pageParameters);
if (hintsStr != null) {
try {
Memento memento = new MementoServiceDefault().parse(hintsStr);
Set<String> keys = memento.keySet();
for (String safeKey : keys) {
String value = memento.get(safeKey, String.class);
String key = safeKey.replace('_', ':');
hints.put(key, value);
}
} catch (RuntimeException ex) {
// fail gracefully, ie ignore.
System.err.println(ex);
}
}
}