Examples of de.danet.an.workflow.api.SAXEventBuffer

de.danet.an.workflow.api.SAXEventBuffer
This interface is implemented by classes that can provide XML content by emitting SAX events.
Applications that use XML at their interfaces can sometimes not avoid using XML like data structures for internal data representation. Holding this data as XML is not very time efficient, because it must be parsed in order to be processed (although parsing time for XML is often overestimated).
Holding the data in either W3C DOM or JDOM representations is not very memory efficient. Depending on the implementation, DOM representations use a factor of 6 to 10 compared with the file space of the same description.
A SAX event buffer is a compromise. It stores the events generated by a SAX parser using as little space as possible while providing the data very quickly to a content Handler.

    th.startElement
        ("", newRootTag, newRootTag, new AttributesImpl());
    // content
    Iterator it = contentParameters.iterator();
    while (it.hasNext()) {
        SAXEventBuffer c = (SAXEventBuffer)it.next();
        c.emit(new BodyFilter(th));
    }
    th.endElement("", newRootTag, newRootTag);
    th.endDocument();
      }
      seb.pack();

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    /* Comment copied from interface. */
    public void invoke(Activity activity, FormalParameter[] formPars, Map map) 
  throws RemoteException, CannotExecuteException {
        try {
            String httpHeaders = (String)map.get("httpHeaders");
            SAXEventBuffer headerContent = (SAXEventBuffer)map.get("header");
            SAXEventBuffer bodyContent = (SAXEventBuffer)map.get("body");
            
            SOAPConnectionFactory factory = SOAPConnectionFactory.newInstance();
            SOAPConnection connection = factory.createConnection();
            
            MessageFactory messageFactory = MessageFactory.newInstance();

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      WfRequester cont = new DefaultRequester(workflowService());
      Process process = (Process)createProcess
    ("actParamTests", "jelly-test1", cont);
      process.start();
      assertTrue (stateReached (process, "closed.completed"));
      SAXEventBuffer res = (SAXEventBuffer)
    process.processContext().get ("result");
      SAXHandler sh = new SAXHandler ();
      res.emit (sh);
      Document resDoc = sh.getDocument();
      XPath xpath = new JDOMXPath("/result/inserted/root/element1/@attr1");
      String val = xpath.stringValueOf(resDoc);
      assertTrue ("Value is: " + val, val.equals ("42"));
      xpath = new JDOMXPath("/result/test");

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      WfRequester cont = new DefaultRequester(workflowService());
      Process process = (Process)createProcess
    ("jelly-test", "jelly-test1", cont);
      process.start();
      assertTrue (stateReached (process, "closed.completed"));
      SAXEventBuffer res = (SAXEventBuffer)
    process.processContext().get ("result");
      SAXHandler sh = new SAXHandler ();
      res.emit (sh);
      Document resDoc = sh.getDocument();
      XPath xpath = new JDOMXPath("/result/inserted/root/element1/@attr1");
      String val = xpath.stringValueOf(resDoc);
      assertTrue ("Value is: " + val, val.equals ("42"));
      xpath = new JDOMXPath("/result/test");

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    }
      }
  } else if (responseData instanceof SAXEventBuffer) {
      CharArrayWriter out = new CharArrayWriter();
      try {
    SAXEventBuffer eventbuf = (SAXEventBuffer)responseData;
    SAXTransformerFactory tf = (SAXTransformerFactory)
        TransformerFactory.newInstance();
    TransformerHandler th = null;
    th = tf.newTransformerHandler();
    Transformer xformer = th.getTransformer();
    if (doctypeSystem != null) {
        xformer.setOutputProperty
      (OutputKeys.DOCTYPE_SYSTEM, doctypeSystem);
    }
    if (doctypePublic != null) {
        xformer.setOutputProperty
      (OutputKeys.DOCTYPE_PUBLIC, doctypePublic);
    }
    th.setResult (new StreamResult(out));
    eventbuf.emit(th);
      } catch (SAXException e) {
    String s = "Error generating XML process data: " 
        + e.getMessage ();
    logger.error (s, e);
    throw new ProcessingException

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        }


        SOAPBodyElement defNode = createWfxmlResponseNode(respMsg,
                Consts.GET_DEFINITION_RESPONSE);


        SAXEventBuffer sax = pd.toSAX();
        importSAXAsChild(respMsg, defNode, sax);
    }

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Related Classes of de.danet.an.workflow.api.SAXEventBuffer

de.danet.an.workflow.clients.wfxml.FactoryResponseGenerator

de.danet.an.workflow.tools.chabacc.plain.Servlet

de.danet.an.workflow.tools.soap.GenericSoapClient

de.danet.an.workflow.tools.XSLTTool

process.ActParamTests

process.JellyTests

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