Cannot run XmlObject.selectPath using Jaxen in multi threaded environment

Whe using complex XPATH which fires Jaxen under the covers is causing problems in Multithreaded environment. The following stack trace:

C:\j2sdk1.4.2\bin\java -Didea.launcher.port=7543 -Didea.launcher.library=C:\IntelliJ-EAP\bin\breakgen.dll -Dfile.encoding=windows-1252 -classpath C:\j2sdk1.4.2\jre\lib\charsets.jar;C:\j2sdk1.4.2\jre\lib\jce.jar;C:\j2sdk1.4.2\jre\lib\jsse.jar;C:\j2sdk1.4.2\jre\lib\plugin.jar;C:\j2sdk1.4.2\jre\lib\rt.jar;C:\j2sdk1.4.2\jre\lib\sunrsasign.jar;C:\j2sdk1.4.2\jre\lib\ext\dnsns.jar;C:\j2sdk1.4.2\jre\lib\ext\ldapsec.jar;C:\j2sdk1.4.2\jre\lib\ext\localedata.jar;C:\j2sdk1.4.2\jre\lib\ext\sunjce_provider.jar;D:\GOLD\test\application\classes;D:\GOLD\application\classes;C:\src\IdeaProjects\GOLD\extlib\sun\jars\mail-1.3.1.jar;C:\src\IdeaProjects\GOLD\extlib\sun\jars\activation-1.0.2.jar;D:\GOLD\common\classes;C:\src\IdeaProjects\GOLD\extlib\commons-beanutils\jars\commons-beanutils-1.6.jar;C:\src\IdeaProjects\GOLD\extlib\commons-collections\jars\commons-collections-2.1.jar;C:\src\IdeaProjects\GOLD\extlib\commons-lang\jars\commons-lang-2.0.jar;C:\src\IdeaProjects\GOLD\extlib\ehcache\jars\ehcache-0.7.jar;C:\src\IdeaProjects\GOLD\extlib\GOLD\jars\abc-clio-1.0-SNAPSHOT.jar;C:\src\IdeaProjects\GOLD\extlib\GOLD\jars\helpxmlbeans-1.0-SNAPSHOT.jar;C:\src\IdeaProjects\GOLD\extlib\GOLD\jars\hitsxmlbeans-1.0-SNAPSHOT.jar;C:\src\IdeaProjects\GOLD\extlib\GOLD\jars\pregoldxmlbeans-1.0-SNAPSHOT.jar;C:\src\IdeaProjects\GOLD\extlib\GOLD\jars\productconfig-1.0-SNAPSHOT.jar;C:\src\IdeaProjects\GOLD\extlib\jfig\jars\jfig-1.2.jar;C:\src\IdeaProjects\GOLD\extlib\junit\jars\junit-3.8.1.jar;C:\src\IdeaProjects\GOLD\extlib\log4j\jars\log4j-1.2.8.jar;C:\src\IdeaProjects\GOLD\extlib\mockobjects\jars\mockobjects-0.9.1.jar;C:\src\IdeaProjects\GOLD\extlib\mockobjects\jars\mockobjects-jdk1.3-j2ee1.3-0.09.jar;C:\src\IdeaProjects\GOLD\extlib\xerces\jars\xercesImpl-2.5.jar;C:\src\IdeaProjects\GOLD\extlib\xerces\jars\xmlParserAPIs-2.2.jar;C:\src\IdeaProjects\GOLD\extlib\commons-logging\jars\commons-logging-1.0.3.jar;C:\src\IdeaProjects\GOLD\extlib\sybase\jars\jconn2-5.5.jar;C:\src\IdeaProjects\GOLD\extlib\xml-beans\jars\xbean-1.0.3.jar;C:\src\IdeaProjects\GOLD\extlib\xml-beans\jars\xbean_xpath-1.0.3.jar;C:\src\jaxen\target\jaxen-1.1-beta-4.jar;C:\apps\googleapi\googleapi.jar;C:\Ice-1.5.1\lib\Ice.jar;C:\tomcat-5.0.27\common\lib\commons-dbcp-1.2.1.jar;C:\tomcat-5.0.27\common\lib\commons-pool-1.2.jar;C:\IntelliJ-EAP\lib\idea_rt.jar com.intellij.rt.execution.application.AppMain com.XmlObjectTest
Thread:Thread: [0]
java.lang.IllegalStateException: Cursor has been disposed
at org.apache.xmlbeans.impl.store.Cursor.checkDisposed(Cursor.java:116)
at org.apache.xmlbeans.impl.store.Cursor.checkDisposed(Cursor.java:110)
at org.apache.xmlbeans.impl.store.Cursor.toBookmark(Cursor.java:255)
at org.apache.xmlbeans.XmlCursor$XmlBookmark.toBookmark(XmlCursor.java:1312)
at org.apache.xmlbeans.impl.xpath.jaxen.XBeansNavigator.getChildAxisIterator(XBeansNavigator.java:387)
at org.jaxen.expr.iter.IterableChildAxis.iterator(IterableChildAxis.java:79)
at org.jaxen.expr.DefaultStep.axisIterator(DefaultStep.java:137)
at org.jaxen.expr.DefaultNameStep.evaluate(DefaultNameStep.java:201)
at org.jaxen.expr.DefaultLocationPath.evaluate(DefaultLocationPath.java:151)
at org.jaxen.expr.DefaultXPathExpr.asList(DefaultXPathExpr.java:107)
at org.jaxen.BaseXPath.selectNodesForContext(BaseXPath.java:715)
at org.jaxen.BaseXPath.selectNodes(BaseXPath.java:244)
at org.apache.xmlbeans.impl.xpath.jaxen.XBeansXPathAdv.selectNodes(XBeansXPathAdv.java:76)
at org.apache.xmlbeans.impl.xpath.jaxen.XBeansXPathAdv.selectPath(XBeansXPathAdv.java:83)
at org.apache.xmlbeans.impl.store.Path$JaxenPathImpl$JaxenPathEngine.next(Path.java:536)
at org.apache.xmlbeans.impl.store.Cursor$Selections.setCursor(Cursor.java:3260)
at org.apache.xmlbeans.impl.store.Cursor.selectPath(Cursor.java:2903)
at org.apache.xmlbeans.impl.values.XmlObjectBase.selectPath(XmlObjectBase.java:396)
at org.apache.xmlbeans.impl.values.XmlObjectBase.selectPath(XmlObjectBase.java:380)
at com.XmlObjectTest.fetchDocumentTypeFromCitation(XmlObjectTest.java:101)
at com.XmlObjectTest.runTest(XmlObjectTest.java:90)
at com.XmlObjectTest.access$000(XmlObjectTest.java:37)
at com.XmlObjectTest$TestThread.run(XmlObjectTest.java:76)
Thread: [1] => documentType = Article
Thread: [0] => documentType = null

Process finished with exit code 0

Test program:
/**

• XmlObjectTest.java
• Version : GOLD 0.1
  *
• Copyright 2004,
• by The Gale Group
• 27500 Drake Rd.
• Farmington Hills, MI 48331-3535
• Telephone (248) 699-4253
  *
• This code is the sole property of The Gale Group and is protected by
• copyright under the laws of the United States. This program is
• confidential, proprietary, and a trade secret, not to be disclosed
• without written authorization from The Gale Group. Any use,
• duplication, or disclosure of this program by other than
• The Gale Group and its assigned licensees is strictly forbidden by law.
  *
• All rights reserved.
  */
  package com;

import org.apache.xmlbeans.XmlObject;
import org.apache.xmlbeans.XmlException;
import org.apache.xmlbeans.impl.values.XmlObjectBase;

import java.io.FileReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;

/**

• The <code>XmlObjectTest </code>
  *
• @author Venkat Ramana Sonnathi (HTC Global Svc. Inc.)
• @version 1.0
  */
  public class XmlObjectTest {

public static void main(String[] args) throws XmlException, IOException, InterruptedException {

for(int i=0 ; i < 2 ; ++i)

{ TestThread mythread = new TestThread("Thread: [" + i + "]"); mythread.start(); }

}

public static class TestThread extends Thread {
/**

• Allocates a new <code>Thread</code> object. This constructor has
• the same effect as <code>Thread(null, null, name)</code>.
  *
• @param name the name of the new thread.
• @see Thread#Thread(ThreadGroup,
• Runnable, String)
  */
  public TestThread(String name) { super(name); }

/**

• If this thread was constructed using a separate
• <code>Runnable</code> run object, then that
• <code>Runnable</code> object's <code>run</code> method is called;
• otherwise, this method does nothing and returns.
• <p/>
• Subclasses of <code>Thread</code> should override this method.
  *
• @see Thread#start()
• @see Thread#stop()
• @see Thread#Thread(ThreadGroup,
• Runnable, String)
• @see Runnable#run()
  */
  public void run() { XmlObjectTest.runTest(getName()); }

}

private static void runTest(String name) {
XmlObject result = null;
try

{ result = XmlObject.Factory.parse(new FileReader(new File("resultItem.xml"))); }

catch (XmlException e)

{ e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates. } catch (IOException e) { e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates. }

String documentType = fetchDocumentTypeFromCitation(result, "FIELD[@NAME='DT']");
System.out.println(name + " => documentType = " + documentType);
//To change body of created methods use File | Settings | File Templates.
}

private static String fetchDocumentTypeFromCitation(XmlObject xmlObject, String xpathForDocType) {

try {
XmlObject[] docTypeArr = null;
if (xpathForDocType != null) {
docTypeArr = xmlObject.selectPath("CB/CD/" + xpathForDocType);
if (docTypeArr.length > 0)

{ return ((XmlObjectBase) docTypeArr[0]).getStringValue(); }

}
docTypeArr = xmlObject.selectPath("CB/CD/RECTYPE");
String docType = (docTypeArr.length > 0) ? ((XmlObjectBase) docTypeArr[0]).getStringValue() : null;
return docType;
} catch (Exception e)

{ System.out.println("Thread:"+ Thread.currentThread().getName()); e.printStackTrace(); }

return null;
}

}

Sample xml file:
<?xml version="1.0" encoding="UTF-8"?>
<CB>
<CI>1</CI>
<CM>N</CM>
<CV>N</CV>
<CFT>N</CFT>
<CEFT>N</CEFT>
<CFA>N</CFA>
<CFI>N</CFI>
<CFEI>N</CFEI>
<CEMAIL>N</CEMAIL>
<L2H>B</L2H>
<CFN>N</CFN>
<CJ>7010</CJ>
<CN>CX3411000020</CN>
<RT>46</RT>
<CP>X</CP>
<CD>
<RECTYPE>EBKS</RECTYPE>
<VERSION>FMT BUILD G_1_00_00_006 10/30/2004</VERSION>
<TABLE>gold_cita_ebks.fmt 09-Oct-2004</TABLE>
<FIELD NAME="AL">Middle School</FIELD>
<FIELD NAME="BA">0PHX</FIELD>
<FIELD NAME="BE">Baker, Lawrence W.</FIELD>
<FIELD NAME="BE">Hillstrom, Kevin</FIELD>
<FIELD NAME="BE">Hillstrom, Laurie Collier</FIELD>
<FIELD NAME="BE">Carnagie, Julie L.</FIELD>
<FIELD NAME="BU">Lawrence W. Baker</FIELD>
<FIELD NAME="BU">Kevin Hillstrom</FIELD>
<FIELD NAME="BU">Laurie Collier Hillstrom</FIELD>
<FIELD NAME="BU">Julie L. Carnagie</FIELD>
<FIELD NAME="CB">French and Indian War</FIELD>
<FIELD NAME="CG">
<I>French and Indian War</I>
. Lawrence W. Baker, Kevin Hillstrom, Laurie Collier Hillstrom, and Julie L. Carnagie, eds. Vol. 1. Detroit: U*X*L, 2003.
</FIELD>
<FIELD NAME="DT">Article</FIELD>
<FIELD NAME="EB">0-7876-9158-5</FIELD>
<FIELD NAME="EI">0787691585</FIELD>
<FIELD NAME="FL">fiw_01_00020.xml</FIELD>
<FIELD NAME="IB">0-7876-6560-6</FIELD>
<FIELD NAME="IL">Yes</FIELD>
<FIELD NAME="IP">00119</FIELD>
<FIELD NAME="IX">UXL</FIELD>
<FIELD NAME="LA">English</FIELD>
<FIELD NAME="LP">Detroit</FIELD>
<FIELD NAME="MG">bookitem</FIELD>
<FIELD NAME="PB">U*X*L</FIELD>
<FIELD NAME="PC">
<b>King George II</b>
. .
</FIELD>
<FIELD NAME="PC">
<b>John Stuart, third earl of Bute</b>
.
<i>Reproduced by permission of</i>
.
</FIELD>
<FIELD NAME="PC">
<b>Lieutenant Colonel George Croghan</b>
.
<i>Reproduced by permission of</i>
.
</FIELD>
<FIELD NAME="PF">Jan 1, 2003</FIELD>
<FIELD NAME="SC">
<I>French and Indian War</I>
. Vol. 1. U*X*L, 2003.
</FIELD>
<FIELD NAME="SH">History</FIELD>
<FIELD NAME="SO">French and Indian War</FIELD>
<FIELD NAME="SV">0001</FIELD>
<FIELD NAME="TB">French and Indian War |9999|2003|0787691585</FIELD>
<FIELD NAME="TD">1760-62: The War Continues in Europe</FIELD>
<FIELD NAME="TE">1760-62: The War Continues in Europe</FIELD>
<FIELD NAME="TG">9</FIELD>
<FIELD NAME="TY">Topic Overview</FIELD>
<FIELD NAME="UZ">FIW</FIELD>
<FIELD NAME="XZ">1760-62: The War Continues in Europe</FIELD>
<FIELD NAME="YC">2003</FIELD>
<FIELD NAME="ZA">fiw_01_00119-p.pdf</FIELD>
<FIELD NAME="ZB">fiw_01_00127-p.pdf</FIELD>
<FIELD NAME="ZZ">CX3411000020</FIELD>
<FIELD NAME="GI">Yes</FIELD>
</CD>
</CB>