| /* |
| * Copyright (c) 2005, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
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| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
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| */ |
| |
| /** |
| * Provides the API for creating and building SOAP messages. This package |
| * is defined in the <i>SOAP with Attachments API for Java™ (SAAJ) 1.4</i> specification. |
| * |
| * <p> The API in the <code>javax.xml.soap</code> package allows you to do the following: |
| * |
| * <ul> |
| * <li>create a point-to-point connection to a specified endpoint |
| * <li>create a SOAP message |
| * <li>create an XML fragment |
| * <li>add content to the header of a SOAP message |
| * <li>add content to the body of a SOAP message |
| * <li>create attachment parts and add content to them |
| * <li>access/add/modify parts of a SOAP message |
| * <li>create/add/modify SOAP fault information |
| * <li>extract content from a SOAP message |
| * <li>send a SOAP request-response message |
| * </ul> |
| * |
| * <p> |
| * In addition the APIs in the <code>javax.xml.soap</code> package extend |
| * their counterparts in the <code>org.w3c.dom</code> package. This means that |
| * the <code>SOAPPart</code> of a <code>SOAPMessage</code> is also a DOM Level |
| * 2 <code>Document</code>, and can be manipulated as such by applications, |
| * tools and libraries that use DOM (see http://www.w3.org/DOM/ for more information). |
| * It is important to note that, while it is possible to use DOM APIs to add |
| * ordinary DOM nodes to a SAAJ tree, the SAAJ APIs are still required to return |
| * SAAJ types when examining or manipulating the tree. In order to accomplish |
| * this the SAAJ APIs (specifically {@link javax.xml.soap.SOAPElement#getChildElements()}) |
| * are allowed to silently replace objects that are incorrectly typed relative |
| * to SAAJ requirements with equivalent objects of the required type. These |
| * replacements must never cause the logical structure of the tree to change, |
| * so from the perspective of the DOM APIs the tree will remain unchanged. However, |
| * the physical composition of the tree will have changed so that references |
| * to the nodes that were replaced will refer to nodes that are no longer a |
| * part of the tree. The SAAJ APIs are not allowed to make these replacements |
| * if they are not required so the replacement objects will never subsequently |
| * be silently replaced by future calls to the SAAJ API. |
| * <p> |
| * What this means in practical terms is that an application that starts to use |
| * SAAJ APIs on a tree after manipulating it using DOM APIs must assume that the |
| * tree has been translated into an all SAAJ tree and that any references to objects |
| * within the tree that were obtained using DOM APIs are no longer valid. Switching |
| * from SAAJ APIs to DOM APIs is not allowed to cause invalid references and |
| * neither is using SAAJ APIs exclusively. It is only switching from using DOM |
| * APIs on a particular SAAJ tree to using SAAJ APIs that causes the risk of |
| * invalid references. |
| * |
| * <h3>Discovery of SAAJ implementation</h3> |
| * <p> |
| * There are several factories defined in the SAAJ API to discover and load specific implementation: |
| * |
| * <ul> |
| * <li>{@link javax.xml.soap.SOAPFactory} |
| * <li>{@link javax.xml.soap.MessageFactory} |
| * <li>{@link javax.xml.soap.SOAPConnectionFactory} |
| * <li>{@link javax.xml.soap.SAAJMetaFactory} |
| * </ul> |
| * |
| * First three define {@code newInstance()} method which uses a common lookup procedure to determine |
| * the implementation class: |
| * |
| * <ul> |
| * <li>Checks if a system property with the same name as the factory class is set (e.g. |
| * {@code javax.xml.soap.SOAPFactory}). If such property exists then its value is assumed to be the fully qualified |
| * name of the implementation class. This phase of the look up enables per-JVM override of the SAAJ implementation. |
| * <li>Use the configuration file "jaxm.properties". The file is in standard |
| * {@link java.util.Properties} format and typically located in the |
| * {@code conf} directory of the Java installation. It contains the fully qualified |
| * name of the implementation class with the key being the system property |
| * defined above. |
| * <li> Use the service-provider loading facilities, defined by the {@link java.util.ServiceLoader} class, |
| * to attempt to locate and load an implementation of the service using the {@linkplain |
| * java.util.ServiceLoader#load(java.lang.Class) default loading mechanism}. |
| * <li> Finally, if all the steps above fail, {@link javax.xml.soap.SAAJMetaFactory} instance is used |
| * to locate specific implementation (for {@link javax.xml.soap.MessageFactory} and {@link javax.xml.soap.SOAPFactory}) |
| * or platform default implementation is used ({@link javax.xml.soap.SOAPConnectionFactory}). |
| * Whenever {@link javax.xml.soap.SAAJMetaFactory} is used, its lookup procedure to get actual instance is performed. |
| * </ul> |
| */ |
| package javax.xml.soap; |