public synchronized <K> NavigableSet<K> getTreeSet(String name) {
Object o = getCollectionInstance(name);
if (o != null) return (NavigableSet<K>) o;
try {
long recid = getNamedObject(name);
if (recid == 0) return null;
BTree t = BTree.<K, Object>load(this, recid);
if (t.hasValues()) throw new ClassCastException("TreeMap is not TreeSet");
BTreeSet<K> ret = new BTreeSet<K>(new BTreeMap(t, false));
collections.put(name, new WeakReference<Object>(ret));
return ret;
} catch (IOException e) {
throw new IOError(e);
}
}
public synchronized <K, V> ConcurrentNavigableMap<K, V> getTreeMap(String name) {
Object o = getCollectionInstance(name);
if (o != null) return (ConcurrentNavigableMap<K, V>) o;
try {
long recid = getNamedObject(name);
if (recid == 0) return null;
BTree t = BTree.<K, V>load(this, recid);
if (!t.hasValues()) throw new ClassCastException("TreeSet is not TreeMap");
ConcurrentNavigableMap<K, V> ret =
new BTreeMap<K, V>(t, false); // TODO put readonly flag here
collections.put(name, new WeakReference<Object>(ret));
return ret;
} catch (IOException e) {
throw new IOError(e);
}
}