/* Copyright 2004 Sun Microsystems, Inc. All rights reserved.  Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:  - Redistributions of source code must retain the above copyright   notice, this list of conditions and the following disclaimer.  - Redistribution in binary form must reproduce the above copyright   notice, this list of conditions and the following disclaimer in   the documentation and/or other materials provided with the   distribution.  Neither the name of Sun Microsystems, Inc. or the names of contributors may be used to endorse or promote products derived from this software without specific prior written permission.  This software is provided "AS IS," without a warranty of any kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. 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You acknowledge that Software is not designed, licensed or intended for use in the design, construction, operation or maintenance of any nuclear facility. $Id: BrokerServiceBean.java,v 1.4 2003/12/02 23:03:50 vijaysr Exp $ */package com.sun.j2ee.blueprints.opc.webservicebroker.provider;import java.rmi.*;import javax.ejb.*;import com.sun.j2ee.blueprints.servicelocator.*;import com.sun.j2ee.blueprints.servicelocator.ejb.*;import com.sun.j2ee.blueprints.opc.JNDINames;import com.sun.j2ee.blueprints.opc.utils.*;import com.sun.j2ee.blueprints.opc.serviceexceptions.*;import java.io.*;import org.w3c.dom.*;import org.xml.sax.*;import javax.xml.parsers.*;import javax.xml.transform.*;import javax.xml.transform.dom.*;public class BrokerServiceBean implements SessionBean {    private SessionContext sc;    private BrokerTransformer bt = null;     public BrokerServiceBean(){}        public void ejbCreate() throws CreateException {        bt = new BrokerTransformer();    }    public String submitDocument(String doc) throws InvalidDocumentException,                                                    ProcessingException {  // Step 1. Validate Doc                boolean valid =  validate(doc);                if (!valid) {            throw new ProcessingException("BrokerServiceBean: document does not match schema" + doc);        }        // transform the doc  String tDoc = bt.transform(new InputSource(new StringReader(doc)));        if (tDoc != null) {            doc = tDoc;        }  // Step 3. Map doc to domain obj  // In this implementation, the Work Flow Manager expects the doc as it  // is; no mapping required  // Step 4. Find which Q to put the doc;   // In this implementation, the work flow  // manager Q is the target for all messages;   // Step 5. Delegate the request to processing layer by sending it   // on to the Q  if(delegateToProcessingLayer(JNDINames.WORKFLOW_MGR_MDB_QUEUE, doc)                                                             == false)       throw new ProcessingException("Irrecoverable error while submitting requestfor processing");  // Step 6. Send back a corrleation ID - sending a dummy value here  return("INV1234");    }    private boolean delegateToProcessingLayer(String destQueue, String xmlDoc)                                              throws ProcessingException {  return(JMSUtils.sendMessage(destQueue, JNDINames.DOC_TYPE,            JNDINames.INVOICE_DOCUMENT, xmlDoc));    }    public void setSessionContext(SessionContext sc) {        this.sc = sc;    }        public void ejbRemove() throws RemoteException {        bt = null;    }        //empty for Stateless EJBs    public void ejbActivate() {}    //empty for Stateless EJBs    public void ejbPassivate() {}        public boolean validate(String xmlText) {        Document doc = null;        try {            DocumentBuilderFactory dbf = null;            DocumentBuilder db = null;            try {                dbf = DocumentBuilderFactory.newInstance();                dbf.setValidating(true);                dbf.setAttribute("http://java.sun.com/xml/jaxp/properties/schemaLanguage",                                             "http://www.w3.org/2001/XMLSchema");                if (dbf != null){                    db = dbf.newDocumentBuilder();                 }                 db.setEntityResolver(new BrokerEntityResolver());                 db.setErrorHandler(new BrokerXMLMessageErrorHandler());            } catch ( javax.xml.parsers.ParserConfigurationException pce) {                System.err.println(pce);            }          InputSource is =  new InputSource(new StringReader(xmlText));            doc = db.parse(is);            return true;        } catch (Exception e) {            System.err.println("BrokerServiceBean::getDocument error loading XML Document " + e);        }        return false;    }}