1 /*
2 * Copyright 2005-2010 the original author or authors.
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.springframework.ws.soap.security.callback;
18
19 import java.io.IOException;
20 import javax.security.auth.callback.Callback;
21 import javax.security.auth.callback.CallbackHandler;
22 import javax.security.auth.callback.UnsupportedCallbackException;
23
24 import org.apache.commons.logging.Log;
25 import org.apache.commons.logging.LogFactory;
26
27 /**
28 * Abstract implementation of a <code>CallbackHandler</code>.
29 *
30 * @author Arjen Poutsma
31 * @since 1.0.0
32 */
33 public abstract class AbstractCallbackHandler implements CallbackHandler {
34
35 /** Logger available to subclasses. */
36 protected final Log logger = LogFactory.getLog(getClass());
37
38 protected AbstractCallbackHandler() {
39 }
40
41 /**
42 * Iterates over the given callbacks, and calls <code>handleInternal</code> for each of them.
43 *
44 * @param callbacks the callbacks
45 * @see #handleInternal(javax.security.auth.callback.Callback)
46 */
47 public final void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {
48 for (Callback callback : callbacks) {
49 handleInternal(callback);
50 }
51 }
52
53 /** Template method that should be implemented by subclasses. */
54 protected abstract void handleInternal(Callback callback) throws IOException, UnsupportedCallbackException;
55 }