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 }