1 /* 2 * Copyright 2009 University Corporation for Advanced Internet Development, Inc. 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.opensaml.ws.message.handler; 18 19 import org.opensaml.ws.message.MessageContext; 20 import org.opensaml.ws.message.decoder.MessageDecoder; 21 import org.opensaml.ws.message.encoder.MessageEncoder; 22 23 /** 24 * A handler is invoked to implement specific business logic on a {@link MessageContext}. 25 * 26 * <p> 27 * It is most commonly used to invoke logic within {@link MessageEncoder}'s and {@link MessageDecoder}'s, 28 * but could also be used outside of that framework. 29 * </p> 30 * 31 */ 32 public interface Handler { 33 34 /** 35 * Invoke the handler on the specified message context. 36 * 37 * @param msgContext the message context on which to invoke the handler 38 * @throws HandlerException if there is a problem handling the message context 39 */ 40 public void invoke(MessageContext msgContext) throws HandlerException; 41 42 }