2362N/A * Copyright (c) 2000, 2002, Oracle and/or its affiliates. All rights reserved. 0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 0N/A * This code is free software; you can redistribute it and/or modify it 0N/A * under the terms of the GNU General Public License version 2 only, as 2362N/A * published by the Free Software Foundation. Oracle designates this 0N/A * particular file as subject to the "Classpath" exception as provided 2362N/A * by Oracle in the LICENSE file that accompanied this code. 0N/A * This code is distributed in the hope that it will be useful, but WITHOUT 0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 0N/A * version 2 for more details (a copy is included in the LICENSE file that 0N/A * accompanied this code). 0N/A * You should have received a copy of the GNU General Public License version 0N/A * 2 along with this work; if not, write to the Free Software Foundation, 0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 2362N/A * or visit www.oracle.com if you need additional information or have any 0N/A * A NameNode represents a node in the DNS namespace. Each node 0N/A * has a label, which is its name relative to its parent (so the 0N/A * node at Sun.COM has label "Sun"). Each node has a hashtable of 0N/A * children indexed by their labels converted to lower-case. 0N/A * <p> A node may be addressed from another by giving a DnsName 0N/A * consisting of the sequence of labels from one node to the other. 0N/A * <p> Each node also has an <tt>isZoneCut</tt> flag, used to indicate 0N/A * if the node is a zone cut. A zone cut is a node with an NS record 0N/A * that is contained in one zone, but that actually belongs to a child zone. 0N/A * <p> All access is unsynchronized. 0N/A * @author Scott Seligman 0N/A // parent, or null for root of a tree 0N/A private boolean isZoneCut =
false;
// true if this node is a zone cut 0N/A private int depth =
0;
// depth in tree (0 for root) 0N/A * Returns a newly-allocated NameNode. Used to allocate new nodes 0N/A * in a tree. Should be overridden in a subclass to return an object 0N/A * of the subclass's type. 0N/A * Returns the name of this node relative to its parent, or null for 0N/A * the root of a tree. 0N/A * Returns the depth of this node in the tree. The depth of the root 0N/A * Returns the children of this node, or null if there are none. 0N/A * The caller must not modify the Hashtable returned. 0N/A * Returns the child node given the hash key (the down-cased label) 0N/A * for its name relative to this node, or null if there is no such 0N/A * Returns the node at the end of a path, or null if the 0N/A * node does not exist. 0N/A * The path is specified by the labels of <tt>name</tt>, beginning 0N/A * Returns the node at the end of a path, creating it and any 0N/A * intermediate nodes as needed. 0N/A * The path is specified by the labels of <tt>name</tt>, beginning