1 /*
   2  * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.xml.internal.ws.message;
  27 
  28 import com.sun.istack.internal.NotNull;
  29 import com.sun.xml.internal.ws.api.SOAPVersion;
  30 import com.sun.xml.internal.ws.api.message.AttachmentSet;
  31 import com.sun.xml.internal.ws.api.message.HeaderList;
  32 import com.sun.xml.internal.ws.api.message.Message;
  33 import com.sun.xml.internal.ws.api.message.MessageHeaders;
  34 
  35 import org.xml.sax.ContentHandler;
  36 import org.xml.sax.ErrorHandler;
  37 import org.xml.sax.SAXException;
  38 
  39 import javax.xml.stream.XMLStreamException;
  40 import javax.xml.stream.XMLStreamReader;
  41 import javax.xml.stream.XMLStreamWriter;
  42 import javax.xml.transform.Source;
  43 
  44 /**
  45  * {@link Message} that has no body.
  46  *
  47  * @author Kohsuke Kawaguchi
  48  */
  49 public class EmptyMessageImpl extends AbstractMessageImpl {
  50 
  51     /**
  52      * If a message has no payload, it's more likely to have
  53      * some header, so we create it eagerly here.
  54      */
  55     private final MessageHeaders headers;
  56     private final AttachmentSet attachmentSet;
  57 
  58     public EmptyMessageImpl(SOAPVersion version) {
  59         super(version);
  60         this.headers = new HeaderList(version);
  61         this.attachmentSet = new AttachmentSetImpl();
  62     }
  63 
  64     public EmptyMessageImpl(MessageHeaders headers, @NotNull AttachmentSet attachmentSet, SOAPVersion version){
  65         super(version);
  66         if(headers==null)
  67             headers = new HeaderList(version);
  68         this.attachmentSet = attachmentSet;
  69         this.headers = headers;
  70     }
  71 
  72     /**
  73      * Copy constructor.
  74      */
  75     private EmptyMessageImpl(EmptyMessageImpl that) {
  76         super(that);
  77         this.headers = new HeaderList(that.headers);
  78         this.attachmentSet = that.attachmentSet;
  79         this.copyFrom(that);
  80     }
  81 
  82     public boolean hasHeaders() {
  83         return headers.hasHeaders();
  84     }
  85 
  86     public MessageHeaders getHeaders() {
  87         return headers;
  88     }
  89 
  90     public String getPayloadLocalPart() {
  91         return null;
  92     }
  93 
  94     public String getPayloadNamespaceURI() {
  95         return null;
  96     }
  97 
  98     public boolean hasPayload() {
  99         return false;
 100     }
 101 
 102     public Source readPayloadAsSource() {
 103         return null;
 104     }
 105 
 106     public XMLStreamReader readPayload() throws XMLStreamException {
 107         return null;
 108     }
 109 
 110     public void writePayloadTo(XMLStreamWriter sw) throws XMLStreamException {
 111         // noop
 112     }
 113 
 114     public void writePayloadTo(ContentHandler contentHandler, ErrorHandler errorHandler, boolean fragment) throws SAXException {
 115         // noop
 116     }
 117 
 118     public Message copy() {
 119         return new EmptyMessageImpl(this).copyFrom(this);
 120     }
 121 
 122 }