private void attachImpl(Env env, StringValue hash, Value obj, Value value)
{
ObjectEntry entry = _objMap.get(hash);
if (entry == null)
{
entry = new ObjectEntry(hash, obj, value);
if (_tail != null)
{
_tail.setNext(entry);
entry.setPrev(_tail);
}
_tail = entry;
if (_head == null)
{
_head = entry;
}
}
else
{
entry.setObject(obj);
entry.setValue(value);
}
_objMap.put(hash, entry);
}
private void detachImpl(Env env, StringValue hash)
{
ObjectEntry entry = _objMap.remove(hash);
if (entry == null)
{
return;
}
ObjectEntry prev = entry.getPrev();
ObjectEntry next = entry.getNext();
if (prev != null)
{
prev.setNext(next);
}
if (next != null)
{
next.setPrev(prev);
}
if (entry == _tail)
{
_tail = entry.getPrev();
}
if (entry == _head)
{
_head = entry.getNext();
}
}