001/* 002 * Copyright 2002-2016 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * https://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.oxm; 018 019import java.io.IOException; 020 021import javax.xml.transform.Result; 022 023/** 024 * Defines the contract for Object XML Mapping Marshallers. Implementations of this interface 025 * can serialize a given Object to an XML Stream. 026 * 027 * <p>Although the {@code marshal} method accepts a {@code java.lang.Object} as its 028 * first parameter, most {@code Marshaller} implementations cannot handle arbitrary 029 * {@code Object}s. Instead, a object class must be registered with the marshaller, 030 * or have a common base class. 031 * 032 * @author Arjen Poutsma 033 * @since 3.0 034 * @see Unmarshaller 035 */ 036public interface Marshaller { 037 038 /** 039 * Indicate whether this marshaller can marshal instances of the supplied type. 040 * @param clazz the class that this marshaller is being asked if it can marshal 041 * @return {@code true} if this marshaller can indeed marshal instances of the supplied class; 042 * {@code false} otherwise 043 */ 044 boolean supports(Class<?> clazz); 045 046 /** 047 * Marshal the object graph with the given root into the provided {@link Result}. 048 * @param graph the root of the object graph to marshal 049 * @param result the result to marshal to 050 * @throws IOException if an I/O error occurs 051 * @throws XmlMappingException if the given object cannot be marshalled to the result 052 */ 053 void marshal(Object graph, Result result) throws IOException, XmlMappingException; 054 055}