@Override
public boolean containsKey(Object key) {
if (key == null) return false;
if (!(key instanceof Namespace)) return false;
Namespace prefix = (Namespace) key;
if (prefix.compareTo(from) < 0) return false;
if (prefix.compareTo(to) >= 0) return false;
BerkeleyDBDelegateTreeNodeEntity.PrimaryKeyData pk =
new BerkeleyDBDelegateTreeNodeEntity.PrimaryKeyData(parent.getStatementUuid(), prefix);
return transaction.contains(index, pk);
}
@Override
public DelegateTreeSubNode get(Object key) {
if (key == null) return null;
if (!(key instanceof Namespace)) return null;
Namespace prefix = (Namespace) key;
if (prefix.compareTo(from) < 0) return null;
if (prefix.compareTo(to) >= 0) return null;
BerkeleyDBDelegateTreeNodeEntity.PrimaryKeyData pk =
new BerkeleyDBDelegateTreeNodeEntity.PrimaryKeyData(parent.getStatementUuid(), prefix);
BerkeleyDBDelegateTreeNodeEntity entity = transaction.get(index, pk);
if (entity == null) return null;
return (DelegateTreeSubNode) persistenceManager.entityToDelegateTreeNode(entity);
}