001 /** 002 * 003 * Copyright 2004 Protique Ltd 004 * 005 * Licensed under the Apache License, Version 2.0 (the "License"); 006 * you may not use this file except in compliance with the License. 007 * You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 * 017 **/ 018 package org.codehaus.activesoap; 019 020 import javax.xml.stream.XMLStreamReader; 021 import javax.xml.stream.XMLStreamWriter; 022 023 /** 024 * A pluggable Strategy pattern for processing a fragment of XML which is 025 * typically a SOAP body element and its content or a single SOAP header element 026 * but can also be used for processing entire REST XML services as well. 027 * 028 * @version $Revision: 1.9 $ 029 */ 030 public interface Handler { 031 032 /** 033 * Handles the processing of an XML message which is typically a SOAP body element 034 * or header element but could be an entire REST XML service. 035 * 036 * @param exchange is the message exchange which can be used to accesss message-specific attributes 037 * to communicate between different handlers in a loose coupled way or to access service specific details 038 * such as the SOAP roles and encodings etc. 039 * 040 */ 041 public void invoke(MessageExchange exchange) throws Exception; 042 043 }