149 lines
8.4 KiB
Java
149 lines
8.4 KiB
Java
/*
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* Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* <h1>JAX-WS 2.0.1 Server Runtime</h1>
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* <P>This document describes the architecture of server side
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* JAX-WS 2.0.1 runtime. </p>
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*
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* <h3>JAX-WS 2.0.1 Server Runtime Sequence Diagram</h3>
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* <img src='../../../../../jaxws/basic-server.seq.png'>
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*
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*
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* <H3>Message Flow</H3>
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* <P>A Web Service invocation starts with either the
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* {@link com.sun.xml.internal.ws.transport.http.servlet.WSServletDelegate WSServletDelegate}
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* or the {@link com.sun.xml.internal.ws.transport.http.server.ServerConnectionImpl ServerConnectionImpl}.
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* Both of these classes find the appropriate {@link com.sun.xml.internal.ws.server.RuntimeEndpointInfo RuntimeEndpointInfo}
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* and invokes the {@link com.sun.xml.internal.ws.server.Tie#handle(com.sun.xml.internal.ws.api.server.WSConnection,
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* com.sun.xml.internal.ws.spi.runtime.RuntimeEndpointInfo) Tie.handle}
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* method. This method first creates a {@link com.sun.pept.ept.MessageInfo MessageInfo}
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* used to gather inforrmation about the message to be received. A
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* {@link com.sun.xml.internal.ws.server.RuntimeContext RuntimeContext}
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* is then created with the MessageInfo and the {@link com.sun.xml.internal.ws.api.model.SEIModel RuntimeModel}
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* retrieved from the RuntimeEndpointInfo. The RuntimeContext is then
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* stored in the MessageInfo. The {@link com.sun.pept.ept.EPTFactory EPTFactory}
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* is retrieved from the {@link com.sun.xml.internal.ws.server.EPTFactoryFactoryBase EPTFactoryFactoryBase}
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* and also placed in the MessagInfo. A {@link com.sun.pept.protocol.MessageDispatcher MessageDispatcher}
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* is then created and the receive method is invoked. There will be two
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* types of MessageDispatchers for JAX-WS 2.0.1, SOAPMessageDispatcher
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* (one for client and one for the server) and an XMLMessageDispatcher
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* (one for the client and one for the server).</P>
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* <P>The MessageDispatcher.receive method orchestrates the receiving of
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* a Message. The SOAPMessageDispatcher first converts the MessageInfo
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* to a SOAPMessage. The SOAPMessageDispatcher then does mustUnderstand
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* processing followed by an invocation of any handlers. The SOAPMessage
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* is then converted to an InternalMessage and stored in the
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* MessageInfo. The converting of the SOAPMessage to an InternalMessage
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* is done using the decoder retrieved from the EPTFactory that is
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* contained in the MessageInfo. Once the SOAPMessage has been converted
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* to an InternalMessage the endpoint implementation is invoked via
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* reflection from the Method stored in the MessageInfo. The return
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* value of the method call is then stored in the InternalMessage. An
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* internalMessage is then created from the MessageInfo. The SOAPEncoder
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* is retrieved from the EPTFactory stored in the MessageInfo. The
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* SOAPEncoder.toSOAPMessage is then invoked to create a SOAPMessage
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* from the InternalMessage. A WSConnection is then retrieved from the
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* MessageInfo and the SOAPMessage is returned over that WSConnection.</P>
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* <P><BR>
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* </P>
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* <H3>External Interactions</H3>
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* <H4>SAAJ API</H4>
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* <UL>
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* <LI><P>JAX-WS creates SAAJ javax.xml.soap.SOAPMessage
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* from the HttpServletRequest.
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* At present, JAX-WS reads all the bytes from the request stream and
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* then creates SOAPMessage along with the HTTP headers.</P>
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* </UL>
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* <P>javax.xml.soap.MessageFactory(binding).createMessage(MimeHeaders, InputStream)</P>
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* <UL>
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* <LI><P>SOAPMessage parses the content from the stream including MIME
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* data</P>
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* <LI><P>com.sun.xml.internal.ws.server.SOAPMessageDispatcher::checkHeadersPeekBody()</P>
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* <P>SOAPMessage.getSOAPHeader() is used for mustUnderstand processing
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* of headers. It further uses
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* javax.xml.soap.SOAPHeader.examineMustUnderstandHeaderElements(role)</P>
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* <P>SOAPMessage.getSOAPBody().getFistChild() is used for guessing the
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* MEP of the request</P>
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* <LI><P>com.sun.xml.internal.ws.handler.HandlerChainCaller:insertFaultMessage()</P>
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* <P>SOAPMessage.getSOAPPart().getEnvelope() and some other SAAJ calls
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* are made to create a fault in the SOAPMessage</P>
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* <LI><P>com.sun.xml.internal.ws.handler.LogicalMessageImpl::getPayload()
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* interacts with SAAJ to get body from SOAPMessage</P>
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* <LI><P>com.sun.xml.internal.ws.encoding.soap.SOAPEncoder.toSOAPMessage(com.sun.xml.internal.ws.encoding.soap.internal.InternalMessage,
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* SOAPMessage). There is a scenario where there is SOAPMessage and a
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* logical handler sets payload as Source. To write to the stream,
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* SOAPMessage.writeTo() is used but before that the body needs to be
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* updated with logical handler' Source. Need to verify if this
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* scenario is still happening since Handler.close() is changed to take
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* MessageContext.</P>
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* <LI><P>com.sun.xml.internal.ws.handlerSOAPMessageContextImpl.getHeaders()
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* uses SAAJ API to get headers.</P>
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* <LI><P>SOAPMessage.writeTo() is used to write response. At present,
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* it writes into byte[] and this byte[] is written to
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* HttpServletResponse.</P>
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* </UL>
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* <H4>JAXB API</H4>
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* <P>JAX-WS RI uses the JAXB API to marshall/unmarshall user created
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* JAXB objects with user created {@link javax.xml.bind.JAXBContext JAXBContext}.
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* Handler, Dispatch in JAX-WS API provide ways for the user to specify his/her own
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* JAXBContext. {@link com.sun.xml.internal.ws.encoding.jaxb.JAXBTypeSerializer JAXBTypeSerializer} class uses all these methods.</P>
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* <UL>
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* <LI><p>{@link javax.xml.bind.Marshaller#marshal(Object,XMLStreamWriter) Marshaller.marshal(Object,XMLStreamWriter)}</p>
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* <LI><P>{@link javax.xml.bind.Marshaller#marshal(Object,Result) Marshaller.marshal(Object, DomResult)}</P>
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* <LI><P>{@link javax.xml.bind.Unmarshaller#unmarshal(XMLStreamReader) Object Unmarshaller.unmarshal(XMLStreamReader)}</P>
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* <LI><P>{@link javax.xml.bind.Unmarshaller#unmarshal(Source) Object Unmarshaller.unmarshal(Source)}</P>
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* </UL>
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* The following two JAXB classes are implemented by JAX-WS to enable/implement MTOM and XOP
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* <UL>
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* <LI><P>{@link javax.xml.bind.attachment.AttachmentMarshaller AttachmentMarshaller}</P>
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* <LI><P>{@link javax.xml.bind.attachment.AttachmentUnmarshaller AttachmentUnmarshaller}</P>
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* </UL>
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* <H4>JAXB Runtime-API (private contract)</H4>
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* <P>JAX-WS RI uses these private API for serialization/deserialization
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* purposes. This private API is used to serialize/deserialize method
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* parameters at the time of JAXBTypeSerializer class uses all
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* these methods.</P>
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* <UL>
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* <LI><P>{@link com.sun.xml.internal.bind.api.Bridge#marshal(BridgeContext, Object, XMLStreamWriter) Bridge.marshal(BridgeContext, Object, XMLStreamWriter)}</P>
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* <LI><P>{@link com.sun.xml.internal.bind.api.Bridge#marshal(BridgeContext, Object, Node) Bridge.marshal(BridgeContext, Object, Node)}</P>
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* <LI><P>{@link com.sun.xml.internal.bind.api.Bridge#unmarshal(BridgeContext, XMLStreamReader) Object Bridge.unmarshal(BridgeContext, XMLStreamReader)}</P>
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* </UL>
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*
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* @ArchitectureDocument
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**/
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package com.sun.xml.internal.ws.server;
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import com.sun.xml.internal.bind.api.BridgeContext;
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import javax.xml.stream.XMLStreamReader;
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import javax.xml.stream.XMLStreamWriter;
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import javax.xml.transform.Source;
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import javax.xml.transform.Result;
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import org.w3c.dom.Node;
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