public synchronized <K, V> ConcurrentMap<K, V> getHashMap(String name) {
Object o = getCollectionInstance(name);
if (o != null) return (ConcurrentMap<K, V>) o;
try {
long recid = getNamedObject(name);
if (recid == 0) return null;
HTree tree = fetch(recid);
tree.setPersistenceContext(this);
if (!tree.hasValues()) {
throw new ClassCastException("HashSet is not HashMap");
}
collections.put(name, new WeakReference<Object>(tree));
return tree;
} catch (IOException e) {
throw new IOError(e);
}
}
public synchronized <K> Set<K> getHashSet(String name) {
Object o = getCollectionInstance(name);
if (o != null) return (Set<K>) o;
try {
long recid = getNamedObject(name);
if (recid == 0) return null;
HTree tree = fetch(recid);
tree.setPersistenceContext(this);
if (tree.hasValues()) {
throw new ClassCastException("HashMap is not HashSet");
}
Set<K> ret = new HTreeSet(tree);
collections.put(name, new WeakReference<Object>(ret));
return ret;
} catch (IOException e) {
throw new IOError(e);
}
}