Java & xml: using .getXMLString() in JAVA code

I was trying to experiment in what XML output I would get from a query on a database of mine so in a JAVA program outside the
database I tried:
OracleXMLQuery oxq = new OracleXMLQuery(conn, query);
oxq.setRowsetTag(row set");
oxq.setRowTag("row");
return oxq.getXMLString();
If oxq.getXMLString() is commented out it runs fine (but does nothing visable) but when is there I get a comolation error:
oxq.getXMLString(); gets error on compiling: Error(776,21): cannot access class org.w3c.dom.Node; file org\w3c\dom\Node.class not
found
Why is this happening? Sorry if this a silly question
Many thanks for your help
Hannah Birch

What do your imports and class/lib path look like?

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Hi Marco,
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Working fine with JAVA code and Error Occured while using in JSP

Hi.....
When initiating a BPEL process from JAVA the code is working fine and the Process is getting initiated.But while using that code in J2EE project as a java code and while calling that method Error is occuring.....
Here by i am attaching my JAVA Code which runs as an applicateion and package which runs in Server....
JAVA Code (Run as Application) Working Fine:
package bo;
import com.oracle.bpel.client.Locator;
import com.oracle.bpel.client.NormalizedMessage;
import com.oracle.bpel.client.delivery.IDeliveryService;
import java.util.Map;
import java.util.Properties;
import oracle.xml.parser.v2.XMLElement;
/*import javax.servlet.RequestDispatcher;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest ;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession; */
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
public class processit {
     public static void main(String args[]){
          String input = "TATA";
          String xmlInput= "<ns1:AccessDBBPELProcessRequest xmlns:ns1=\"http://xmlns.oracle.com/AccessDBBPEL\"><ns1:input>"+input+"</ns1:input></ns1:AccessDBBPELProcessRequest>";
          String xml="<ns1:BPELProcess1ProcessRequest xmlns:ns1=\"http://xmlns.oracle.com/BPELProcess1\">";
          xml=xml+"<ns1:input>"+input+"</ns1:input>";
          xml=xml+"</ns1:BPELProcess1ProcessRequest>";
          try{
          Properties props=new Properties();
          props.setProperty("orabpel.platform","ias_10g");
          props.setProperty("java.naming.factory.initial","com.evermind.server.rmi.RMIInitialContextFactory");
          props.setProperty("java.naming.provider.url","opmn:ormi://157.227.132.226:6003:home/orabpel");
          props.setProperty("java.naming.security.principal","oc4jadmin");
          props.setProperty("java.naming.security.credentials","oc4jadmin");
          props.setProperty("dedicated.rmicontext", "true");
          Locator locator = new Locator("default", "bpel", props);
          System.out.println("After creating the locator object......");
          IDeliveryService deliveryService =(IDeliveryService)locator.lookupService(IDeliveryService.SERVICE_NAME);
          System.out.println("Before creating the NormalizedMessage object......");
          NormalizedMessage nm = new NormalizedMessage();
          System.out.println("After creating the NormalizedMessage object.*.*.*...");
          nm.addPart("payload", xml);
          System.out.println("Before creating response object......");
          NormalizedMessage res = deliveryService.request("BPELProcess1", "process", nm);
          System.out.println("After calling the BPELProcess1 .*.*.*...");
          Map payload = res.getPayload();
          System.out.println("BPEL called");
          XMLElement xmlEl=(oracle.xml.parser.v2.XMLElement)payload.get("payload");
          String replyText=xmlEl.getText();
          System.out.println("Reply from BPEL Process>>>>>>>>>>>>> "+replyText);
          catch (Exception e) {
          System.out.println("Exception : "+e);
          e.printStackTrace();
JSP and Java Method Used:
JSP Code:
===============
<%@ page import=" bo.callbpel" %>
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>FEATT - I30</title>
</head>
<body>
<%
String input=request.getParameter("dnvalue");
callbpel p=new callbpel();
String Output=p.Initiate(input);
out.print("The Input Given to the BPEL Process is : "+input);
%>
<BR><BR><BR><BR><BR><BR>
<%
out.print("The Reply from BPEL Process is : "+Output);
%>
</body>
</html>
Java Code:
package bo;
import com.oracle.bpel.client.Locator;
import com.oracle.bpel.client.NormalizedMessage;
import com.oracle.bpel.client.delivery.IDeliveryService;
import java.util.Map;
import java.util.Properties;
import oracle.xml.parser.v2.XMLElement;
/*import javax.servlet.RequestDispatcher;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest ;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession; */
//import java.util.*;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
public class callbpel {
     public String Initiate(String value){
          String replyText=null;
          String input = value;
          System.out.println(input);
          String xmlInput= "<ns1:AccessDBBPELProcessRequest xmlns:ns1=\"http://xmlns.oracle.com/AccessDBBPEL\"><ns1:input>"+input+"</ns1:input></ns1:AccessDBBPELProcessRequest>";
          String xml="<ns1:BPELProcess1ProcessRequest xmlns:ns1=\"http://xmlns.oracle.com/BPELProcess1\">";
          xml=xml+"<ns1:input>"+input+"</ns1:input>";
          xml=xml+"</ns1:BPELProcess1ProcessRequest>";
          try{
          Properties props=new Properties();
          props.setProperty("orabpel.platform","ias_10g");
          props.setProperty("java.naming.factory.initial","com.evermind.server.rmi.RMIInitialContextFactory");
          props.setProperty("java.naming.provider.url","opmn:ormi://157.227.132.226:6003:home/orabpel");
          props.setProperty("java.naming.security.principal","oc4jadmin");
          props.setProperty("java.naming.security.credentials","oc4jadmin");
          props.setProperty("dedicated.rmicontext", "true");
          Locator locator = new Locator("default", "bpel", props);
          String uniqueBpelId = com.collaxa.cube.util.GUIDGenerator.generateGUID();
          //System.out.println(uniqueBpelId);
          //java.util.Map msgProps = new HashMap();
          System.out.println("After creating the locator object......");
          IDeliveryService deliveryService =(IDeliveryService)locator.lookupService(IDeliveryService.SERVICE_NAME);
          System.out.println("Before creating the NormalizedMessage object......");
          NormalizedMessage nm = new NormalizedMessage();
          System.out.println("After creating the NormalizedMessage object.*.*.*...");
          //msgProps.put("conversationId",uniqueBpelId);
          //nm.setProperty("conversationId",uniqueBpelId);
          nm.addPart("payload", xml);
          System.out.println("Before creating response object......");
          NormalizedMessage res = deliveryService.request("BPELProcess1", "process", nm);
          System.out.println("After calling the BPELProcess1 .*.*.*...");
          Map payload = res.getPayload();
          System.out.println("BPEL called");
          XMLElement xmlEl=(oracle.xml.parser.v2.XMLElement)payload.get("payload");
          replyText=xmlEl.getText();
          System.out.println("Reply from BPEL Process>>>>>>>>>>>>> "+replyText);
          catch (Exception e) {
          System.out.println("Exception : "+e);
          e.printStackTrace();
          return replyText;
While Creating and Object for the Class callbpel and Whilw Calling that Method
callbpel p=new callbpel();
String Output=p.Initiate(input);
Its throwing an Error:
Error Occured is:
After creating the locator object......
Before creating the NormalizedMessage object......
After creating the NormalizedMessage object.*.*.*...
Before creating response object......
Apr 24, 2008 9:12:00 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet jsp threw exception
java.lang.NoClassDefFoundError: javax/ejb/EJBException
     at com.oracle.bpel.client.util.ExceptionUtils.handleServerException(ExceptionUtils.java:76)
     at com.oracle.bpel.client.delivery.DeliveryService.getDeliveryBean(DeliveryService.java:254)
     at com.oracle.bpel.client.delivery.DeliveryService.request(DeliveryService.java:83)
     at com.oracle.bpel.client.delivery.DeliveryService.request(DeliveryService.java:53)
     at bo.callbpel.Initiate(callbpel.java:55)
     at org.apache.jsp.output_jsp._jspService(output_jsp.java:55)
     at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
     at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331)
     at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
     at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:874)
     at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
     at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
     at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
     at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
     at java.lang.Thread.run(Unknown Source)
For Running JSP i am Using Eclipse 3.2.0 and apache-tomcat-5.5.25
Please Provide me a Solution......
Thanks in Advance.....
Regards,
Suresh K

A JSP is not the same as a Java application. A Java application has package statment, import statements, try/catch block, a JSP doesn't.

How to modify an existing xml file from java code.

Hi
I have worked on creating a new xml file from java code using xmlbeans.But if i try to modify an already existing file using java code I am unable to get errorfree xmlfile.
For example if xml file(studlist.xml) is as below:
<?xml version="1.0" encoding="UTF-8"?>
<StudentList xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="D:\kchaitanya\xmlprac1\abc\Studlist.xsd">
     <Student>
          <Name>ram</Name>
          <Age>27</Age>
     </Student>
<Student>
          <Name>sham</Name>
          <Age>26</Age>
     </Student>
</StudentList>
Now suppose i have set name to victor using student.setName,
and set age to 20 using setAge from javacode,
the new xml file is as follows:
<?xml version="1.0" encoding="UTF-8"?>
<StudentList xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="D:\kchaitanya\xmlprac1\abc\Studlist.xsd">
     <Student>
          <Name>ram</Name>
          <Age>27</Age>
     </Student>
<Student>
          <Name>sham</Name>
          <Age>26</Age>
     </Student>
</StudentList>
<Student>
          <Name>victor</Name>
          <Age>20</Age>
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As observed this is not a valid xml file.But how can i modify without any errors?

I know it's an old post, but I found this while doing a google search for something else, and don't like to leave it un-aswered
Just in case anyone has a similar problem... In this case the new elements have been appended outside of the root element
What you need to do is first get the root element and then append the new children to that, there are several ways of getting the root element, which depend on what you want to do with the elements you get back here's a simple (incomplete) way.
// gets the root element of the specified file (code not shown)
Element rootElement= new SAXReader().read(file).getRootElement();Then just append the new elements as below (this is non-generic code and would need to be modified for your situation)
// write a new student element
Element student = document.createElement("Student"); // creates the new student
rootElement.appendChild(student); // ***appends it to the root element***
Element name = document.createElement("Name"); // creates the name element
name.appendChild(document.createTextNode("Fred")); // adds the name text to the name element
student.appendChild(name); // appends the name to the student
Element age= document.createElement("Age"); // creates the age element
age.appendChild(document.createTextNode("26")); // adds the age text to the age element
student.appendChild(age); // appends the name to the studentThen flush ya buffers or whatever and write the file
Edited by: Dream-Scourge on Apr 23, 2008 11:10 AM

Unable to transform XML with XSL in java code

Hi,
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import java.io.*;
import java.net.*;
import java.util.*;
import org.w3c.dom.*;
import javax.xml.parsers.*;
import javax.xml.transform.*;
import javax.xml.transform.stream.*;
import javax.xml.transform.dom.*;
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String xmlResult = "out.xml";
DocumentBuilderFactory dfactory = DocumentBuilderFactory.newInstance();
dfactory.setNamespaceAware(true);
DocumentBuilder docBuilder = dfactory.newDocumentBuilder();
Document xmlDoc = docBuilder.newDocument();
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xmlDoc.appendChild(root);
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Transformer transformer = factory.newTransformer(new StreamSource(xslDoc));
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fw.flush();
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marc.xml -- source XML file
========================
<?xml version="1.0" encoding="UTF-8"?>
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========================
out.xml -- result using command line
========================
<?xml version="1.0" encoding="UTF-8"?>
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<title>Arithmetic</title>
</titleInfo>
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========================
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========================
<?xml version="1.0" encoding="UTF-8"?>
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I am using the same XSL file. My Java program use the same XSL file I used in the command line.
It is possible that my Java code is using a different parser, but I developed a seperate program to parse the XML using the same parser that my Java code is using. It output the result I expected. Here is the code for the program:
import java.io.*;
import javax.xml.transform.*;
import javax.xml.transform.stream.*;
public class Convertor {
public static void main(String[] args) throws Exception {
String xslDoc = "MARC21slim2MODS.xsl";
String xmlResult = "out.xml";
String xmlDoc = marc.xml";
TransformerFactory factory = TransformerFactory.newInstance();
Transformer transformer = factory.newTransformer(new StreamSource(xslDoc));
StreamSource xmlSource = new StreamSource(xmlDoc);
FileWriter fw = new FileWriter(new File(xmlResult));
StreamResult output = new StreamResult(fw);
transformer.transform(xmlSource, output);
}

Parsing an XML using DOM parser in Java in Recursive fashion

I need to parse an XML using DOM parser in Java. New tags can be added to the XML in future. Code should be written in such a way that even with new tags added there should not be any code change. I felt that parsing the XML recursively can solve this problem. Can any one please share sample Java code that parses XML recursively. Thanks in Advance.

Actually, if you are planning to use DOM then you will be doing that task after you parse the data. But anyway, have you read any tutorials or books about how to process XML in Java? If not, my suggestion would be to start by doing that. You cannot learn that by fishing on forums. Try this one for example:
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Hi
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Thank you very much for your quick reply. I have made some progress but I am still stumped.
In my code I am doing this:
SchemaFactory factory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
Schema schema = factory.newSchema();
Validator validator = schema.newValidator();
validator.validate(XML_SOURCE);
I find this works if my schema does not have a target namespace. I have downloaded the following simple example from the internet that uses a target namespace and it fails:
library1.xsd:
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://example.org/prod"
xmlns:prod="http://example.org/prod">
<xsd:element name="product" type="prod:ProductType"/>
<xsd:complexType name="ProductType">
<xsd:sequence>
<xsd:element name="number" type="xsd:integer"/>
<xsd:element name="size" type="prod:SizeType"/>
</xsd:sequence>
<xsd:attribute name="effDate" type="xsd:date"/>
</xsd:complexType>
<xsd:simpleType name="SizeType">
<xsd:restriction base="xsd:integer">
<xsd:minInclusive value="2"/>
<xsd:maxInclusive value="18"/>
</xsd:restriction>
</xsd:simpleType>
</xsd:schema>
<prod:product xmlns:prod="http://example.org/prod"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="library1.xsd"
effDate="2001-04-02">
<number>557</number>
<size>10</size>
</prod:product>
I get the following SAXParseException when I validate:
[line 4, col 36|
cvc-elt.1: Cannot find the declaration of element 'prod:product'.
Am I doing something wrong with the namespace declaration?
Edited by: alfredamorrissey on Oct 31, 2007 6:34 AM

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