1 /*
2 * Copyright 2004 The Apache Software Foundation
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 *
16 */
17 package org.apache.asn1.ber;
18
19
20
21
22 /***
23 * A callback interface used to monitor the activities of a tuple node visitor.
24 *
25 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
26 * @version $Rev$
27 */
28 public interface VisitorMonitor
29 {
30 /*** The do nothing visitor monitor */
31 VisitorMonitor NOOP = new VisitorMonitor() {
32 public void visited( TupleNodeVisitor v, TupleNode n ) {} };
33
34 /***
35 * Notifies that a node has been visited.
36 *
37 * @param visitor the visitor visiting the node
38 * @param node the not that has already been visited
39 */
40 void visited( TupleNodeVisitor visitor, TupleNode node );
41 }