Help needed with Update statements.

Question

Hello All,
I am trying to learn Berkeley XMLDB and facing problem to query the inserted XML file. I have a small XML file with the following contents:
<?xml version="1.0" standalone="yes"?>
<Bookstore>
<Book>
<book_ID>1</book_ID>
<title>Harry Potter and the Order of the Phoenix</title>
<subtitle>A Photographic History</subtitle>
<author>
<author_fname>J.K.</author_fname>
<author_lname>Rowling</author_lname>
</author>
<price>9.99</price>
<year_published>2004</year_published>
<publisher>Scholastic, Inc.</publisher>
<genre>Fiction</genre>
<quantity_in_stock>28997</quantity_in_stock>
<popularity>20564</popularity>
</Book>
</Bookstore>
When I try to update the TITLE of this node I have the following error message:
C:\Users\Chandra\Desktop\BDB>javac -classpath .;"C:\Program Files\Sleepycat Soft
ware\Berkeley DB XML 2.1.8\jar\dbxml.jar";"C:\Program Files\Sleepycat Software\B
erkeley DB XML 2.1.8\jar\db.jar" bdb.java
bdb.java:75: illegal start of expression
public static final String STATEMENT1 = "replace value of node collection("twopp
ro.bdbxml")/Bookstore/Book/bookid/title with 'NEWBOOK'";
^
bdb.java:80: ')' expected
System.out.println("Done query: " + STATEMENT1);
^
2 errors
But when I remove the update statements and just try to display the TITLE of this node, I dont see any outputs. Please help me to catch up with my mistakes. Below is source code I am using to run this functionality.
Thanks.
import java.io.File;
import java.io.FileNotFoundException;
import com.sleepycat.db.DatabaseException;
import com.sleepycat.db.Environment;
import com.sleepycat.db.EnvironmentConfig;
import com.sleepycat.dbxml.XmlContainer;
import com.sleepycat.dbxml.XmlException;
import com.sleepycat.dbxml.XmlInputStream;
import com.sleepycat.dbxml.XmlManager;
import com.sleepycat.dbxml.XmlUpdateContext;
import com.sleepycat.dbxml.XmlDocument;
import com.sleepycat.dbxml.XmlQueryContext;
import com.sleepycat.dbxml.XmlQueryExpression;
import com.sleepycat.dbxml.XmlResults;
import com.sleepycat.dbxml.XmlValue;
public class bdb{
public static void main(String[] args)
Environment myEnv = null;
File envHome = new File("D:/xmldata");
try {
EnvironmentConfig envConf = new EnvironmentConfig();
envConf.setAllowCreate(true); // If the environment does not
// exits, create it.
envConf.setInitializeCache(true); // Turn on the shared memory
// region.
envConf.setInitializeLocking(true); // Turn on the locking subsystem.
envConf.setInitializeLogging(true); // Turn on the logging subsystem.
envConf.setTransactional(true); // Turn on the transactional
envConf.setRunRecovery(true);
// subsystem.
myEnv = new Environment(envHome, envConf);
// Do BDB XML work here.
} catch (DatabaseException de) {
// Exception handling goes here
} catch (FileNotFoundException fnfe) {
// Exception handling goes here
} finally {
try {
if (myEnv != null) {
myEnv.close();
} catch (DatabaseException de) {
// Exception handling goes here
XmlManager myManager = null;
XmlContainer myContainer = null;
// The document
String docString = "D:/xmldata/test.xml";
// The document's name.
String docName = "cia";
try {
myManager = new XmlManager(); // Assumes the container currently exists.
myContainer =
myManager.createContainer("twoppro.bdbxml");
myManager.setDefaultContainerType(XmlContainer.NodeContainer); // Need an update context for the put.
XmlUpdateContext theContext = myManager.createUpdateContext(); // Get the input stream.
XmlInputStream theStream =
myManager.createLocalFileInputStream(docString); // Do the actual put
myContainer.putDocument(docName, // The document's name
theStream, // The actual document.
theContext, // The update context
// (required).
null); // XmlDocumentConfig object
theStream.delete();
// Update the title
public static final String STATEMENT1 = "*replace value of node collection("twoppro.bdbxml")/Bookstore/Book/[bookid=1]/title with 'NEWBOOK'";*
XmlQueryContext context = myManager.createQueryContext();
XmlQueryExpression queryExpression1 = myManager.prepare(STATEMENT1, context);
System.out.println("Try to execute query: " +
System.out.println("Done query: " + STATEMENT1);
queryExpression1.execute(context);
// Get a query context
XmlQueryContext context = myManager.createQueryContext();
// Set the evaluation type to Lazy.
context.setEvaluationType(XmlQueryContext.Lazy);
// Declare the query string
String queryString =
"for $u in collection('twoppro.dbxml')/Bookstore/Book/[bookid=1]"
+ "*return $u/title";*
// Prepare (compile) the query
XmlQueryExpression qe = myManager.prepare(queryString, context);
XmlResults results = qe.execute(context);
System.out.println("ok");
System.out.println(results);
} catch (XmlException e) {
// Error handling goes here. You may want to check
// for XmlException.UNIQUE_ERROR, which is raised
// if a document with that name already exists in
// the container. If this exception is thrown,
// try the put again with a different name, or
// use XmlModify to update the document.
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
try {
if (myContainer != null) {
myContainer.close();
if (myManager != null) {
myManager.close();
} catch (XmlException ce) {
// Exception handling goes here

Answer 1

Thanks Rucong. The change you suggested did helped me to run the program correct. But I also have the display function to retrive the results and my program is parsed without any output.
C:\Users\C\Desktop\BDB>Clientbuild.bat
C:\Users\C\Desktop\BDB>javac -classpath .;"C:\Program Files\Sleepycat Soft
ware\Berkeley DB XML 2.1.8\jar\dbxml.jar";"C:\Program Files\Sleepycat Software\B
erkeley DB XML 2.1.8\jar\db.jar" bdb.java
C:\Users\C\Desktop\BDB>Client.bat
C:\Users\C\Desktop\BDB>java -classpath .;"C:\Program Files\Sleepycat Softw
are\Berkeley DB XML 2.1.8\jar\dbxml.jar";"C:\Program Files\Sleepycat Software\Be
rkeley DB XML 2.1.8\jar\db.jar" bdb
See there is no OUPUT displayed. Is there somethinglike a 'print' I have to use in this java code.
Any ideas ? Below is the code I am using now
import java.io.File;
import java.io.FileNotFoundException;
import com.sleepycat.db.DatabaseException;
import com.sleepycat.db.Environment;
import com.sleepycat.db.EnvironmentConfig;
import com.sleepycat.dbxml.XmlContainer;
import com.sleepycat.dbxml.XmlException;
import com.sleepycat.dbxml.XmlInputStream;
import com.sleepycat.dbxml.XmlManager;
import com.sleepycat.dbxml.XmlUpdateContext;
import com.sleepycat.dbxml.XmlDocument;
import com.sleepycat.dbxml.XmlQueryContext;
import com.sleepycat.dbxml.XmlQueryExpression;
import com.sleepycat.dbxml.XmlResults;
import com.sleepycat.dbxml.XmlValue;
public class bdb{
public static void main(String[] args)
Environment myEnv = null;
File envHome = new File("D:/xmldata");
try {
EnvironmentConfig envConf = new EnvironmentConfig();
envConf.setAllowCreate(true); // If the environment does not
// exits, create it.
envConf.setInitializeCache(true); // Turn on the shared memory
// region.
envConf.setInitializeLocking(true); // Turn on the locking subsystem.
envConf.setInitializeLogging(true); // Turn on the logging subsystem.
envConf.setTransactional(true); // Turn on the transactional
envConf.setRunRecovery(true);
// subsystem.
myEnv = new Environment(envHome, envConf);
// Do BDB XML work here.
} catch (DatabaseException de) {
// Exception handling goes here
} catch (FileNotFoundException fnfe) {
// Exception handling goes here
} finally {
try {
if (myEnv != null) {
myEnv.close();
} catch (DatabaseException de) {
// Exception handling goes here
XmlManager myManager = null;
XmlContainer myContainer = null;
// The document
String docString = "D:/xmldata/test.xml";
// The document's name.
String docName = "cia";
try {
myManager = new XmlManager(); // Assumes the container currently exists.
myContainer =
myManager.createContainer("twoppro.bdbxml");
myManager.setDefaultContainerType(XmlContainer.NodeContainer); // Need an update context for the put.
XmlUpdateContext theContext = myManager.createUpdateContext(); // Get the input stream.
XmlInputStream theStream =
myManager.createLocalFileInputStream(docString); // Do the actual put
myContainer.putDocument(docName, // The document's name
theStream, // The actual document.
theContext, // The update context
// (required).
null); // XmlDocumentConfig object
theStream.delete();
// Update the title
String STATEMENT1 = "for $n in collection('twoppro.bdbxml')/Bookstore/Book[book_ID=1]/title return replace value of node $n with 'NEWBOOK'";
XmlQueryContext context = myManager.createQueryContext();
XmlQueryExpression queryExpression1 = myManager.prepare(STATEMENT1, context);
System.out.println("Done query: " + STATEMENT1);
queryExpression1.execute(context);
// Get a query context
XmlQueryContext thiscontext = myManager.createQueryContext();
// Set the evaluation type to Lazy.
context.setEvaluationType(XmlQueryContext.Lazy);
// Declare the query string
String queryString =
"for $u in collection('twoppro.dbxml')/Bookstore/Book/[bookid=1]"
+ "return $u/title";
// Prepare (compile) the query
XmlQueryExpression qe = myManager.prepare(queryString, thiscontext);
XmlResults results = qe.execute(thiscontext);
System.out.println("ok");
System.out.println(results);
} catch (XmlException e) {
// Error handling goes here. You may want to check
// for XmlException.UNIQUE_ERROR, which is raised
// if a document with that name already exists in
// the container. If this exception is thrown,
// try the put again with a different name, or
// use XmlModify to update the document.
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
try {
if (myContainer != null) {
myContainer.close();
if (myManager != null) {
myManager.close();
} catch (XmlException ce) {
// Exception handling goes here
Thanks.