@Override
public Thing getThing(String thingName) {
// 需要先从缓存中读取，否则当遍历iterator时每次都会读取新的，是否和World中的缓存重复呢？
Thing thing = ThingCache.get(thingName);
if (thing != null) {
if (thing.getMetadata().isRemoved()) {
// 如事物的文件被外部改动或事物已给标记为删除，需要重新读取
thing = null;
} else {
return thing;
}
}
thing = doLoadThing(thingName);
if (thing != null) {
for (ThingManagerListener listener : listeners) {
listener.loaded(this, thing);
}
for (ThingManagerListener listener :
World.getInstance().getThingManagerListeners(getName())) {
listener.loaded(this, thing);
}
}
return thing;
}
@Override
public boolean save(Thing thing) {
boolean removed = doSaveThing(thing);
if (thing != null) {
for (ThingManagerListener listener : listeners) {
listener.saved(this, thing);
}
for (ThingManagerListener listener :
World.getInstance().getThingManagerListeners(getName())) {
listener.saved(this, thing);
}
}
return removed;
}