MsgProvider


1   /*
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4    *
5    * Copyright (c) 2001-2003 The Apache Software Foundation.  All rights
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55  
56  package org.jboss.axis.providers.java;
57  
58  import org.jboss.axis.AxisFault;
59  import org.jboss.axis.MessageContext;
60  import org.jboss.axis.description.OperationDesc;
61  import org.jboss.axis.i18n.Messages;
62  import org.jboss.axis.message.SOAPBodyElementAxisImpl;
63  import org.jboss.axis.message.SOAPEnvelopeAxisImpl;
64  import org.w3c.dom.Document  ;
65  import org.w3c.dom.Element  ;
66  
67  import java.lang.reflect.Method  ;
68  import java.util.Vector  ;
69  
70  /**
71   * Deal with message-style Java services.  For now, these are services
72   * with exactly ONE OperationDesc, pointing to a method which looks like
73   * one of the following:
74   * <p/>
75   * public Element [] method(Vector v);
76   * (NOTE : This is silly, we should change it to either be Vector/Vector
77   * or Element[]/Element[])
78   * <p/>
79   * public Document method(Document doc);
80   * <p/>
81   * public void method(MessageContext mc);
82   *
83   * @author Doug Davis (dug@us.ibm.com)
84   * @author Glen Daniels (gdaniels@apache.org)
85   */
86  public class MsgProvider extends JavaProvider
87  {
88     /**
89      * Process the message.  Figure out the method "style" (one of the three
90      * allowed signatures, which has already been determined and cached in
91      * the OperationDesc) and do the actual invocation.  Note that we don't
92      * catch exceptions here, preferring to bubble them right up through to
93      * someone who'll catch it above us.
94      *
95      * @param msgContext the active MessageContext
96      * @param reqEnv     the request SOAPEnvelope
97      * @param resEnv     the response SOAPEnvelope (we should fill this in)
98      * @param obj        the service target object
99      * @throws Exception
100     */
101    public void processMessage(MessageContext msgContext,
102                               SOAPEnvelopeAxisImpl reqEnv,
103                               SOAPEnvelopeAxisImpl resEnv,
104                               Object   obj)
105            throws Exception  
106    {
107       OperationDesc operation = msgContext.getOperation();
108       if (operation == null)
109       {
110          throw new AxisFault(Messages.getMessage("noOperationForQName",
111                  reqEnv.getFirstBody().
112                  getQName().toString()));
113       }
114 
115       Method   method = operation.getMethod();
116 
117       int methodType = operation.getMessageOperationStyle();
118 
119       if (methodType != OperationDesc.MSG_METHOD_SOAPENVELOPE)
120       {
121          // dig out just the body, and pass it on
122          Vector   bodies = reqEnv.getBodyElements();
123          Object   argObjects[] = new Object  [1];
124 
125          switch (methodType)
126          {
127             // SOAPBodyElement [] / SOAPBodyElement []
128             case OperationDesc.MSG_METHOD_BODYARRAY:
129                SOAPBodyElementAxisImpl[] bodyElements =
130                        new SOAPBodyElementAxisImpl[bodies.size()];
131                bodies.toArray(bodyElements);
132                argObjects[0] = bodyElements;
133                SOAPBodyElementAxisImpl[] bodyResult = (SOAPBodyElementAxisImpl[])method.invoke(obj, argObjects);
134                if (bodyResult != null)
135                {
136                   for (int i = 0; i < bodyResult.length; i++)
137                   {
138                      SOAPBodyElementAxisImpl bodyElement = bodyResult[i];
139                      resEnv.addBodyElement(bodyElement);
140                   }
141                }
142                return;
143 
144                // Element [] / Element []
145             case OperationDesc.MSG_METHOD_ELEMENTARRAY:
146                Element  [] elements = new Element  [bodies.size()];
147                for (int i = 0; i < elements.length; i++)
148                {
149                   SOAPBodyElementAxisImpl body = (SOAPBodyElementAxisImpl)bodies.get(i);
150                   elements[i] = body.getAsDOM();
151                }
152                argObjects[0] = elements;
153                Element  [] elemResult = (Element  [])method.invoke(obj, argObjects);
154                if (elemResult != null)
155                {
156                   for (int i = 0; i < elemResult.length; i++)
157                   {
158                      if (elemResult[i] != null)
159                         resEnv.addBodyElement(new SOAPBodyElementAxisImpl(elemResult[i]));
160                   }
161                }
162                return;
163 
164                // Document / Document
165             case OperationDesc.MSG_METHOD_DOCUMENT:
166                Document   doc = ((SOAPBodyElementAxisImpl)bodies.get(0)).getAsDocument();
167                argObjects[0] = doc;
168                Document   resultDoc = (Document  )method.invoke(obj, argObjects);
169                if (resultDoc != null)
170                {
171                   resEnv.addBodyElement(new SOAPBodyElementAxisImpl(resultDoc.getDocumentElement()));
172                }
173                return;
174          }
175       }
176       else
177       {
178          Object   argObjects[] = new Object  [2];
179 
180          // SOAPEnvelope / SOAPEnvelope
181          argObjects[0] = reqEnv;
182          argObjects[1] = resEnv;
183          method.invoke(obj, argObjects);
184          return;
185       }
186 
187       // SHOULD NEVER GET HERE...
188       throw new AxisFault(Messages.getMessage("badMsgMethodStyle"));
189    }
190 }
191 
192 ;
193
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