How to search the Indexing substring?

Hi, I'm Studying Berkeley DB XML now.

I am trying to load 5000 xml docs of appr. All the same dtd.
system: 3GHz; 1.5 Gig memory.

Index Strategy is "node-element-substring-string"

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xml docment example>
<?xml version=3D"1.0" encoding=3D"utf-8" ?>

<dic>
<word>a</word>
<word>aaron</word>
<word>aback</word>
<word>abaissiez</word>
<word>abandon</word>
<word>abandoned</word>
<word>abase</word>
<word>abash</word>
<word>abashed</word>
<word>abate</word>
<word>abated</word>
<word>abatement</word>
<word>abatements</word>
<word>abates</word>
<word>abattement</word>
<word>abbe</word>
<word>abbess</word>
<word>abbey</word>
<word>abbeys</word>
<word>abbominable</word>
<word>abbot</word>
<word>abbots</word>
</dic>

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CreateContainer.java

// Example BDB XML Container Create

im****t com.sleepycat.db.*;
im****t com.sleepycat.dbxml.*;

public class CreateContainer
{
	public static void main ( String[] args )
		throws Exception {
			XmlManager	xmlManager =3D null;
			XmlContainer	xmlContainer =3D null;

		try {
			xmlManager =3D new XmlManager();
			// set Container type
			xmlManager.setDefaultContainerType(XmlContainer.NodeContainer);
			XmlContainerConfig containerConfig =3D new XmlContainerConfig();

			containerConfig.setNodeContainer(true);
			containerConfig.setIndexNodes(true);

			xmlContainer =3D
xmlManager.createContainer("D:/Database/testBDBXML/BDBXMLContainerNode.dbxm=
l",
containerConfig);

			containerConfig =3D xmlContainer.getContainerConfig();

			if(containerConfig.getNodeContainer()) System.out.println("Set Node
Container");
			if(containerConfig.getIndexNodes()) System.out.println("Set Index
Node");

			if(xmlManager.getDefaultContainerType() =3D=3D 1)
System.out.println("This Container Type is Node Container");
		}
		finally {
			try {
				if ( xmlContainer !=3D null ) xmlContainer.close();
				if ( xmlManager !=3D null ) xmlManager.close();
			} catch ( XmlException ce )	{
			// Exception handling
			}
		}
	}
}

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AddIndex.java

im****t com.sleepycat.dbxml.*;

public class AddIndex {
	public static void main (String[] args)
		throws Exception
	{
		XmlManager		xmlManager =3D null;
		XmlContainer	xmlContainer =3D null;

		try {
			xmlManager =3D new XmlManager();
			xmlContainer =3D
xmlManager.openContainer("/Database/testBDBXML/BDBXMLContainerNode.dbxml");

			XmlIndexSpecification indexSpec =3D
xmlContainer.getIndexSpecification();

/*			int indexType =3D XmlIndexSpecification.UNIQUE_OFF |
				XmlIndexSpecification.PATH_NODE |
				XmlIndexSpecification.NODE_ELEMENT |
				XmlIndexSpecification.KEY_SUBSTRING;
*/
			int syntaxType =3D XmlValue.STRING;

			indexSpec.addIndex("", "word", "node-element-substring-string");
		//	indexSpec.addIndex("", "word", indexType, syntaxType);

			XmlUpdateContext uContext =3D xmlManager.createUpdateContext();
			xmlContainer.setIndexSpecification(indexSpec, uContext);

			System.out.println(xmlContainer.getIndexNodes());

		} catch(XmlException e) {
			e.printStackTrace();
			// Error Handling
		} finally {
			try {
				if(xmlContainer !=3D null) {
					xmlContainer.close();
				}
				if(xmlManager !=3D null) {
					xmlManager.close();
				}
			} catch(XmlException ce) {
				// Exception handling
			}
		}
	}
}

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IndexLooup.java

im****t com.sleepycat.dbxml.*;

public class IndexLookup {
	public static void main (String[] args)
		throws Exception
	{
		XmlManager		xmlManager =3D null;
		XmlContainer	xmlContainer =3D null;

		try {
			xmlManager =3D new XmlManager();
			xmlContainer =3D
xmlManager.openContainer("/Database/testBDBXML/BDBXMLContainerNode.dbxml");
			XmlIndexSpecification is =3D xmlContainer.getIndexSpecification();
			XmlIndexDeclaration idxDecl =3Dnull;
			int count=3D0;
			while((idxDecl =3D(is.next())) !=3Dnull){
				System.out.println("For node '" + idxDecl.name + "', found index:
'" + idxDecl.index + "'.");
				count++;
			}
			System.out.println(count+ " indices found.");

			XmlQueryContext qContext =3D xmlManager.createQueryContext();


			XmlIndexLookup xmlIndexLookup =3D null;
			String idxStrategy =3D "node-element-substring-string";

			XmlValue xValue =3D new XmlValue(XmlValue.STRING, "a");
			int op =3D XmlIndexLookup.EQ;

			xmlIndexLookup =3D xmlManager.createIndexLookup(xmlContainer, "",
"word", idxStrategy/* , xValue, op*/);
			System.out.println(xmlIndexLookup.getIndex());

			XmlResults res =3D xmlIndexLookup.execute(qContext);

			XmlDo***ent theDoc =3D xmlManager.createDo***ent();

			while(res.next(theDoc)) {
				System.out.println(theDoc.getContentAsString());
			}
		} catch(XmlException e) {
			e.printStackTrace();
		// Error Handling
		} finally {
			try {
				if(xmlContainer !=3D null) {
					xmlContainer.close();
				}
				if(xmlManager !=3D null) {
					xmlManager.close();
				}
			} catch(XmlException ce) {
				// Exception handling
			}
		}
	}
}

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XQuerytest1.java

// Example XQuery

im****t com.sleepycat.db.*;
im****t com.sleepycat.dbxml.*;

public class XQueryTest1
{
	public static void main ( String[] args )
		throws Exception
	{
		XmlManager	 xmlManager =3D null;
		XmlContainer xmlContainer =3D null;

		try {
			xmlManager =3D new XmlManager();

			// =C4=C1=C5=D7=C0=CC=B3=CA =BF=AD=B1=E2
			xmlContainer =3D
xmlManager.openContainer("/Database/testBDBXML/BDBXMLContainerNode.dbxml");

			// =C4=F5=B8=AE=C4=C1=C5=D8=BD=BA=C6=AE =BB=FD=BC=BA
			XmlQueryContext context =3D xmlManager.createQueryContext();

			// =C4=F5=B8=AE=B9=AE
			String query =3D null;

			//query =3D "for $x in
collection('/Database/testBDBXML/BDBXMLContainerNode.dbxml')/dic/word\n";
			query =3D "for $x in
dbxml:lookup-index('/Database/testBDBXML/BDBXMLContainerNode.dbxml',
'word')";

			query +=3D "where $x/contains($x, 'able')";
			//query +=3D "where $x/starts-with($x, 'a')";
			//query +=3D "where matches($x, 'a')";
			query +=3D "return $x";

			// XQuery =C1=D8=BA=F1
			XmlQueryExpression qe =3D xmlManager.prepare(query, context);

			long a =3D java.lang.System.currentTimeMillis();

			// XQuery =BD=C7=C7=E0 =B9=D7 =B0=E1=B0=FA =B9=DE=BE=C6=BF=C0=B1=E2
			XmlResults results =3D qe.execute(context);
			// System.out.println(results.size());
			long b =3D java.lang.System.currentTimeMillis();
			System.out.println("Elapsed time is : " + (b-a));
			//=B0=E1=B0=FA=BF=A1=BC=AD =B0=AA =BE=F2=BE=EE=BF=C0=B1=E2
			XmlValue value =3D null;

		/*	while(results.hasNext()) {
				System.out.println(results.peek().asString());
				value =3D results.next();
			}
		*/
		}
		finally {
			try {
				if ( xmlContainer !=3D null )
					xmlContainer.close();
				if ( xmlManager !=3D null )
					xmlManager.close();
			} catch ( XmlException ce )	{
			// Exception handling
			}
		}
	}
}

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after "java IndexLookup" is no results.
why?

I am trying to do substring indexing. My listIndex looks like this:
"node-element-substring-string"

However, when I do a lookup on dbxml shell, I dun get any answer. I am
putting the node name also in my search
lookupIndex node-element-substring-string "" "word" "" "" "a"

However, it gives me no result. But, there is an entry which has the
text "a*".
Any ideas why isn't it working and how to make it work.

I don't have idea.
please help me.