public PersistentFieldChange buildChange(String name, Object value) {
touch();
String[] chunks = name.split(":");
// Will be empty string for the root component
String componentId = chunks[2];
String fieldName = chunks[3];
return new PersistentFieldChangeImpl(componentId, fieldName, value);
}
public void postChange(
String prefix, String pageName, String componentId, String fieldName, Object newValue) {
touch();
String key = buildKey(prefix, pageName, componentId, fieldName);
if (LOG.isTraceEnabled()) {
LOG.trace("Adding change to screen '" + this.id + "': " + key + "=>" + newValue);
}
if (newValue == null) {
state.remove(key);
} else {
state.put(key, newValue);
}
}
public ScreenState(String pageName, int idleTimeoutInSeconds) {
touch();
this.pageName = pageName;
this.id = Long.toString(Math.abs(RND.nextLong()));
this.idleTimeoutInSeconds = idleTimeoutInSeconds;
LOG.trace(
"Creating new screen state: id="
+ this.id
+ ", page="
+ pageName
+ ", timeout="
+ idleTimeoutInSeconds);
}
public Map<String, Object> gatherFieldChanges(String prefix, String pageName) {
touch();
prefix = prefix + ":" + pageName;
Map<String, Object> result = new HashMap<String, Object>();
for (String key : state.keySet()) {
if (key.startsWith(prefix)) {
if (LOG.isTraceEnabled()) {
LOG.trace(
"Gathering changes from screen '" + this.id + "': " + key + "=>" + state.get(key));
}
result.put(key, state.get(key));
}
}
return result;
}