Help with EJB 3.0 MEssage Driver Bean Wizard in NetBeans 5.5 preview

I am using NetBeans 5.5 preview with sun apps server 9.0 .
But I am not able to write message driver beans .
Can anybody help in this regards
^^ Unni

Russ thanks for checking back. I did try the prefernce manager but no luck there. I ended up downloarding promaintance as a trail and ran thier error code analysis. http://www.digitalrebellion.com/promaintenance/
So I found that the reason it wouldn't open was that there was a missing framework. I don't know much about frameworks but I do know that when I ran digital rebelions fcp uninstaller it removed this framework. When I reinstalled fcp studio this framework was not reinstalled, even after running all of the proap updates. Consequently I found that my aperature program was affected by this framework as well and wouldn't open. I ended up having to copy the framework off of a another computer and pasting it into the appropriate folder on my Mac Pro.
Viola, compressor now will launch at least and so will apperture. The problem still remains though that I can not ad custom destinations in Compressor with out it crashing. Another thing is that compressor will only quit if I forced quit it. I have tried uninstalling and reintalling FCP studio 4 times now with the same results. After that frameworks fiasco I am a little hesitant to mess with it any more for fear of messing up any other application.
pretty bummed on my set up right now.
-jon

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Create EJB 3.0 Message Driven Bean on a Oracle JMS (AQ)

Hi, I need to develop a EJB 3.0 Message Driven Bean. The MDB has to work on a Oracle AQ using Oracle JMS. Is there any how-to document giving an example about this issue. Can you give an example how to create the JMS destination in OC4J (how to configure the Oracle JMS AQ in OC4j), issue the JMS destination via annotions (resource injection) in the MDB. Please give me a working example of the MDB and a test client to produce a message. Regards, Arjan Jorritsma

Check your ejb-jar.xml and see if it has the version of "2.1" there...
If the application was depending upon EJB 3.0 annotations but it had a ejb-jar.xml that had version set to "2.1" and there was no oracle specific descriptor (orion-ejb-jar.xml) to designate it use the resource adapter; It would expect JMS destination and connection factory that is required for a JMS-MDB set in the ejb-jar.xml. So try to change the ejb-jar.xml to update the version to "3.0", OC4J would have parsed the annotation and combined the metadata with ejb-jar.xml and it would work.
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Cache Synchronization with JMS and a Message Driven Bean (MDB)

If I understand correctly, Toplink ueses the following configuration info to find the target to publish its session messages to a JMS server (having its URL as below) which provides the JNDI service that Toplink needs to look up the topic:
<cache-synchronization-manager>
<clustering-service> oracle.toplink.remote.jms.mdb.JMSPublishingOnlyClusteringService
</clustering-service>
<should-remove-connection-on-error>false</should-remove-connection-on-error>


<jms-topic-connection-factory-name> jms/TopLinkTopicConectionFactory
</jms-topic-connection-factory-name>
<jms-topic-name>jms/TopLinkCacheSynchTopic</jms-topic-name>


<naming-service-url>ormi://localhost:23791</naming-service-url>
<naming-service-initial-context-factory> com.evermind.server.rmi.RMIInitialContextFactory </naming-service-initial-context-factory></cache-synchronization-manager>
The MDB also uses the same JNDI service provided by the JMS server to listen to the topic which is named in the ejb-jar.xml file:
<enterprise-beans>
<message-driven>
<display-name>TopLink clustering MDB</display-name>
<ejb-name>TopLinkClusteringMDB</ejb-name>
<ejb-class>com.mycompany.mdb.ClusteringMDB</ejb-class>
<transaction-type>Container</transaction-type>
<message-driven-destination> <destination-type>javax.jms.Topic</destination-type>
</message-driven-destination>
<env-entry>
<description>TopLink session name</description>
<env-entry-name>tl_session_name_for_mdb</env-entry-name>
<env-entry-type>java.lang.String</env-entry-type>
<env-entry-value>Employee_Session</env-entry-value>
</env-entry>
<resource-ref> <description>description</description>
<res-ref-name>jms/TopLinkTopicConectionFactory</res-ref-name>
<res-type>javax.jms.TopicConnectionFactory</res-type>
<res-auth>Application</res-auth>
<res-sharing-scope>Shareable</res-sharing-scope>
</resource-ref>
<resource-env-ref>
<resource-env-ref-name> jms/TopLinkCacheSynchTopic</resource-env-ref-name>
<resource-env-ref-type>javax.jms.Topic</resource-env-ref-type> </resource-env-ref>
</message-driven></enterprise-beans>
To do this, the EJB container that hosts the above MDB needs to be configured to know where the JMS server is by using the above URL same as in the Toplink sessions.xml file.
I am not clear that who provides the JNDI service for the Toplink session name lookup used by the MDB:
// Obtain the Session name configured in the environment variable
String sessionName = (String) myEnv.lookup(TOPLINK_SESSION_NAME);
session = SessionManager.getManager().getSession(sessionName);
so that the MDB can find the currently running Toplink session and communicate with it.
Can anybody help answer my above question and correct my understandings?
Many thanks!

Although TopLink is running in the application serverâs VM, the only notable integration points with the server are for JTA and user-defined data sources. All of the work performed to get a session via SessionManager occurs solely within TopLink. When the call is made to retrieve a session, you arenât getting the âactiveâ session identified by âEmployee_Sessionâ that is registered with the application server, rather a new session is created using the definition that exists for âEmployee_Sessionâ in sessions.xml.
When the call âsession = SessionManager.getManager().getSession(âEmployee_Sessionâ)â is made, the SessionManager simply looks for sessions.xml at the root level of its deployed jars or classpath, then looks for the âEmployee_Sessionâ tag within sessions.xml. If a session exists in the file with that name then a TopLink session object is created and returned.
Note that setting an environment entry as mentioned above simply allows for the session name to be declared dynamically. The call to âmyEnv.lookup(âtl_session_name_for_mdbâ)â simply asks the beanâs environment for the <env-entry-value> that matches the <env-entry-name>. That string is then used in SessionManager (no different than a hard coded value would be) to identify the session in sessions.xml that is to be loaded.
I hope this makes sense.

Help with Login Form (JSP DB Java Beans Session Tracking)

Hi, I need some help with my login form.
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2. Validation.jsp queries a DB against the parameters received.
3. If the query result is good, I retrieve some information (login id, name, etc.) from the DB and store it into a Java Bean.
4. The bean itself is referenced with the current session.
5. Once all that's done, validation.jsp forwards to main.jsp.
6. As a means to maintain state, I prefer to use url encoding instead of cookies for obvious reasons.I need some help from step 3 onwards please! Some code snippets will do as well!
If you think this approach is not a good practice, pls let me know and advice on better practices!
Thanks a lot!

Alright,here is an example for you.
Assume a case where you don't want to give access to any JSP View/HTML Page/Servlet/Backing Bean unless user logging system and let assume you are creating a View Object with the name.
checkout an example (Assuming the filter is being applied to a pattern * which means when a resource is been accessed by webapplication using APP_URL the filter would be called)
public doFilter(ServletRequest req,ServletResponse res,FilterChain chain){
     if(req instanceof HttpServletRequest){
            HttpServletRequest request = (HttpServletRequest) req;
            HttpSession session = request.getSession();
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            if(session.getAttribute("useInfoBean") != null)
                request.getRequestDispatcher("/dashBoard").forward(req,res);
            else{
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                         chain.doFilter(req,res);
                    else
                      request.getRequestDispatcher("/Login.jsp").forward(req,res);
}If carefully look at the code the autherization is given only if either user is already logged in or making an attempt to login in secured way.
to know more insights about where these can used and how these can be used and how ?? the below links might help you.
http://javaboutique.internet.com/tutorials/Servlet_Filters/
http://e-docs.bea.com/wls/docs92/dvspisec/servlet.html
http://livedocs.adobe.com/jrun/4/Programmers_Guide/filters3.htm
http://www.javaworld.com/javaworld/jw-06-2001/jw-0622-filters.html
http://www.servlets.com/soapbox/filters.html
http://www.onjava.com/pub/a/onjava/2001/05/10/servlet_filters.html
and coming back to DAO Pattern hope the below link might help you.
http://java.sun.com/blueprints/corej2eepatterns/Patterns/DataAccessObject.html
http://java.sun.com/blueprints/patterns/DAO.html
http://www.javapractices.com/Topic66.cjp
http://www.ibm.com/developerworks/java/library/j-dao/
http://www.javaworld.com/javaworld/jw-03-2002/jw-0301-dao.html
On the whole(:D) it is always a good practice to get back to Core Java/J2EE Patterns.and know answers to the question Why are they used & How do i implement them and where do i use it ??
http://www.fluffycat.com/java-design-patterns/
http://java.sun.com/blueprints/corej2eepatterns/Patterns/index.html
http://www.cmcrossroads.com/bradapp/javapats.html
Hope that might help :)
REGARDS,
RaHuL

Help with the open/save message box

Hi everyone, I have a link to a PDF on my website and I need it to open in browser. Right now it always comes up with the open/save message box.
This is no good because I need to embed a direct page link (ie #page=9), and the open/save message box removes the page variable and opens to page one.
It's strange because I have two PDF links on this particular page and while one works fine (and opens in browser) the other constantly prompts with open/ save.
Suggestions? I've already gone into the PDF preferences and set it to "Open PDF in Browser"... this does not help.
Thanks,
Nathan

Well - Yes --- and No. When I try to re-save a document or use the new Save As... implementation I am generally offered my Mac. But - If I create a New document and then use Cmd-S I am taken back to the iCloud Save window with the disclosure triangle closed. I am seeing this in TextEdit and Preview, but I have not checked all my document creator applications to see if the protocol is across the board.)
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Help with [Microsoft][ODBC Microsoft Access Driver]Error in row

hi all,
it seems i have the same problem updating a field in access database here is what my access table has:
a field called userID of type String in Access 2000 on XP.
i wrote the following code in java using Eclipse 3.1.1 ( latest) to update that field:
String database= "jdbc:odbc:Driver={Microsoft Access Driver(*.mdb)};DBQ=";
String url= database + filename.trim() + ";DriverID=22;READONLY=true}";
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con= DriverManager.getConnection( url,"","");
con.setAutoCommit(false);
Statement stmt = con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_UPDATABLE);
stmt.executeQuery("SELECT Users.* FROM Users");
ResultSet rs = stmt.getResultSet();
rs.moveToInsertRow();
rs.updateInt(1,"test");
rs.updateRow();
con.commit();
rs.close();
stmt.close()
con.close();
i get this error :[Microsoft][ODBC Driver Manager] Invalid cursor state
if i use the same code with using re.next(); before rs.moveToInsertRow(); i get [Microsoft][ODBC Microsoft Access Driver]Error in row
i get the errors right at : rs.updateRow();
i dont know what exactly the problem is. why doesnt it get updated and complain about it.
plz help

I'm not sure which JDBC driver you are using.
An access database, by default, has a username and
password as "admin" and "" (ie, empty password).
Actually MS Access has two methods for security. You
are referring to one of them.
If the password of admin is changed, you have to
provide the name of the workgroup information file
also( where it is stored) for making a connection.
I am not sure about the ODBC bridge driver. What iam
using is Atinav's aveConnet JDBC driver. It has
provision for giving username and passwords through
Workgroup information file. In addition to it youcan
give the database password also.
Interesting to note. The bridge for MS Access does
not use that security method. And it will fail if you
set up security using the groups/users adminstration.
The only method it allows is via the "database
password" method.Thank you for your response, but what User ID should I use when I use database password?
openConnection(URL,"xxxx","database password")
thanks again
David Ling

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If I ftp to the site in a terminal window and do a put, I can write to the site. Obviously, I could at some point, because it servers the "dummy" page I put up, but I tested again in case my permissions had changed.
I looked at the "Publishing to Windows-based FTP Server" but it does not seem to describe this error.
BTW, I pay AppleCare for support, but when I tried to get support documentation from them, the tech said they "can't help" with this part of iWeb and hung up on me--the call lasted exactly 90 seconds.
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I waded through the posts for iWeb09 and came across a recommendation for Cyberduck (www.cyberduck.ch), so I tried a copy. Works like a champ. Unlike iWeb09, all I had to do was type in my server name, user name, and password to open the connection. Then I published my site to a folder in iWeb and uploaded the folder in Cyberduck. Cyberduck had no problem writing to the server.
I still would love to know why iWeb can't write to my web server.

Help with EJB Arch: Synchronous front-end -- Asynchronous back-end

Hi folks, We are developing an application with the following characteristics: - users can invoke requests on our appl and they will expect a quick response - to obtain the information requested by the user, our application talks with Tibco using RV. This communication follows a pub/sub messaging paradigm and is asynchronous. - thus, we have a synchronous req/resp front-end and an asynch back-end.
We would like some advice as to the best way of architecting this application. Here is our approach. Please critic and suggest alternatives.
1. Consider an user who has requested something from our app. 2. The user will be using a JSP based front-end. (S)he submits the request on a form and a servlet is driven. 3. The servlet uses a session EJB and invokes one of its methods, which handles some business-specific logic. 4. The method in the session EJB then instantiates a helper class. 5. A method on our helper class is now driven. This method sends a message to Tibco and it provides a callback method in the helper class. 6. The method in the helper class blocks the thread - basically, it waits. 7. Meanwhile, Tibco does the processing and invokes the callback method (in the helper class) with the result. 8. In the callback method, the data sent by Tibco is stored in member variables of the helper class. 9. The callback method wakes up the blocking thread. 10. The method in step 6 wakes up and returns the information to the session EJB. 11. The session EJB returns the information to the invoking servlet. 12. The servlet provides the information back to the user.
The version of Tibco-RV that we are using is not JMS compliant.
We keep hearing that threads should be handled very carefully in an EJB container environment, so we would like to know if the way we are handling the thread in the helper class is okay. Could we remove the helper class and do the same thread-handling in the session EJB itself?
Can we use JMS in this solution even though our Tibco-RV does not support JMS?
Tools: Weblogic App Server 6.1, JBuilder 5.0.
Thanks for your advice and suggestions!

Let me start off by mentioning that Sonic MQ (an excellent JMS server) now provides a bridge for TIB/Rendezous. I am also wrestling with a simliar issue, something that requires threading at the servlet or ejb level, and have given some thought to using JMS. My concern was that JMS is an asynchronous process so it's model does not fit well with the synchronous front end. Technically I can see a few ways to implement it but architecturally I am not convinced that they are sound. You could send a message from the session bean to the TIB via SonicMQ and have a JMS message bean registered as a listener for messages from the TIB, again via SonicMQ. The JMS bean could update a static class or singleton which your session checks but you still have the issue of making the session bean wait on that event.
I'll do a bit more digging and see if there's a design pattern available for this situation.
-Dat

Help with findByDateRange method in CMP enity bean

Hello,
I am trying to deploy my entity beans to WebLogic 7, runnning on a Sun Solaris
box. The application connects to an Oracle 9i database. I am having problems with
2 queries in my ejb-jar.xml file which correspond to 2 finder methods. These finder
methods take two java.util.Date parameters. I have read that EJB QL does not support
dates or date literals in its WHERE clause and one has to use long values of these
dates. I tried various combinations but haven't been able get the query to work.
Here is an excerpt from my ejb-jar.xml file
<query>
<query-method>
<method-name>findBySalesOrderID</method-name>
<method-params>
<method-param>java.lang.Long</method-param>
</method-params>
</query-method>
<ejb-ql>
SELECT OBJECT(c) FROM Equipment c
WHERE c.salesOrderID = ?1
</ejb-ql>
</query>
<query>
<query-method>
<method-name>findEquipmentByStagingDateRange</method-name>
<method-params>
<method-param>java.util.Date</method-param>
<method-param>java.util.Date</method-param>
</method-params>
</query-method>
<ejb-ql>
<![CDATA[
SELECT OBJECT(c) FROM Equipment c
WHERE c.equipReqStageDate >= ?1 AND c.equipReqStageDate <= ?2
]]>
</ejb-ql>
</query>
<query>
<query-method>
<method-params>
<method-param>java.util.Date</method-param>
<method-param>java.util.Date</method-param>
</method-params>
</query-method>
<ejb-ql>
<![CDATA[
SELECT OBJECT(c) FROM Equipment c
WHERE c.equipReqShipDate >= ?1 AND c.equipReqShipDate <= ?2
]]>
</ejb-ql>
</query>
Do I have to change the method parameters to java.lana.Long or to 'long' literal
from java.util.Date?
Here is the finder method signature in the home interface
public java.util.Collection findEquipmentByStagingDateRange(java.util.Date begDate,
java.util.Date engDate) throws javax.ejb.FinderException, java.rmi.RemoteException;
public java.util.Collection findEquipmentByShippingDateRange(java.util.Date begDate,
java.util.Date engDate) throws javax.ejb.FinderException, java.rmi.RemoteException;
Do I have to pass in Dates or java.lang.Longs or 'long' literals?
Any help is really appreciated. Thanks.
[question.txt]

Did you try java.sql.Date?
/k
"John Carson" <[email protected]> wrote in message
news:[email protected]...
>
Hello,
I am trying to deploy my entity beans to WebLogic 7, runnning on a SunSolaris
box. The application connects to an Oracle 9i database. I am havingproblems with
2 queries in my ejb-jar.xml file which correspond to 2 finder methods.These finder
methods take two java.util.Date parameters. I have read that EJB QL doesnot support
dates or date literals in its WHERE clause and one has to use long valuesof these
dates. I tried various combinations but haven't been able get the query towork.
Here is an excerpt from my ejb-jar.xml file
<query>
<query-method>
<method-name>findBySalesOrderID</method-name>
<method-params>
<method-param>java.lang.Long</method-param>
</method-params>
</query-method>
<ejb-ql>
SELECT OBJECT(c) FROM Equipment c
WHERE c.salesOrderID = ?1
</ejb-ql>
</query>
<query>
<query-method>
<method-name>findEquipmentByStagingDateRange</method-name>
<method-params>
<method-param>java.util.Date</method-param>
<method-param>java.util.Date</method-param>
</method-params>
</query-method>
<ejb-ql>
<![CDATA[
SELECT OBJECT(c) FROM Equipment c
WHERE c.equipReqStageDate >= ?1 AND c.equipReqStageDate <= ?2
]]>
</ejb-ql>
</query>
<query>
<query-method>
<method-params>
<method-param>java.util.Date</method-param>
<method-param>java.util.Date</method-param>
</method-params>
</query-method>
<ejb-ql>
<![CDATA[
SELECT OBJECT(c) FROM Equipment c
WHERE c.equipReqShipDate >= ?1 AND c.equipReqShipDate <= ?2
]]>
</ejb-ql>
</query>
Do I have to change the method parameters to java.lana.Long or to 'long'literal
from java.util.Date?
Here is the finder method signature in the home interface
public java.util.Collection findEquipmentByStagingDateRange(java.util.DatebegDate,
java.util.Date engDate) throws javax.ejb.FinderException,java.rmi.RemoteException;
>
public java.util.CollectionfindEquipmentByShippingDateRange(java.util.Date begDate,
java.util.Date engDate) throws javax.ejb.FinderException,java.rmi.RemoteException;
>
Do I have to pass in Dates or java.lang.Longs or 'long' literals?
Any help is really appreciated. Thanks.

Help with EJB plz

Hi,
I'm new to EBJs and am playing with an entity bean pretty much identical to the one on the J2EE tutorial but the home interface does not compile and I've got no idea why. Would really appreciate your help.
COMPILER COMPLAINT*****
C:\j2sdkee1.3\nim\src\ejb\addresses>javac AddressesHome.java
AddressesHome.java:7: cannot resolve symbol
symbol : class Addresses
location: interface AddressesHome
public Addresses Create(String id, String firstname, String lastname, St
ring address, int contactno) throws RemoteException, CreateException;
^
AddressesHome.java:10: cannot resolve symbol
symbol : class Addresses
location: interface AddressesHome
public Addresses FindByPrimaryKey(String id) throws FinderException, Rem
oteException;
^
2 errors
HOME INTERFACE*****
import java.util.Collection;
import java.rmi.RemoteException;
import javax.ejb.*;
public interface AddressesHome extends EJBHome
     public Addresses Create(String id, String firstname, String lastname, String address, int contactno) throws RemoteException, CreateException;
     public Addresses FindByPrimaryKey(String id) throws FinderException, RemoteException;
     public Collection FindByLastName(String lastname) throws FinderException, RemoteException;
ADDRESSESSBEAN CLASS*****
import java.sql.*;
import javax.sql.*;
import java.util.*;
import javax.ejb.*;
import javax.naming.*;
public class AddressesBean implements EntityBean
     private String id;
     private String firstname;
     private String lastname;
     private String address;
     private int contactno;
     private Connection conn;
     private EntityContext context;
     private String dbName = "java:comp/env/jdbc/AddressesdB";
     public String ejbCreate(String id, String firstname, String lastname, String address, int contactno) throws CreateException
               if(address == null || address.length() == 0)
                    throw new CreateException("You must specify an address");
               try
                    insertRow(id, firstname, lastname, address, contactno);
               catch(Exception e)
                    throw new EJBException("ejbCreate: " + e.getMessage());
               this.id = id;
               this.firstname = firstname;
               this.lastname = lastname;
               this.address = address;
               this.contactno = contactno;
               return id;
     public void changeAddress(String address)
          this.address = address;
     public String getAddress()
          return address;
     public void changeContactno(int contactno)
          this.contactno = contactno;
     public int getContactno()
          return contactno;
     public String getFirstname()
          return firstname;
     public String getLastname()
          return lastname;
     public String ejbFindByPrimaryKey(String primaryKey) throws FinderException
          boolean result;
          try
               result = selectByPrimaryKey(primaryKey);
          catch(Exception e)
               throw new EJBException("ejbFindByPrimaryKey: " + e.getMessage());
          if(result)
               return primaryKey;
          else
               throw new ObjectNotFoundException("Row for id " + primaryKey + " not found");
     public Collection ejbFindByLastName(String lastname) throws FinderException
          Collection result;
          try
               result = selectByLastName(lastname);
          catch(Exception e)
               throw new FinderException("ejbFindByLastName :" + e.getMessage());
          return result;
     public void ejbRemove()
          try
               deleteRow(id);
          catch(Exception e)
               throw new EJBException("ejbRemove : " + e.getMessage());
     public void setEntityContext(EntityContext context)
          this.context = context;
          try
               makeConnection();
          catch(Exception e)
               throw new EJBException("Unable to connect to database: " + e.getMessage());
     public void unsetEntityContext()
          try
               conn.close();
          catch(Exception e)
               throw new EJBException("unsetEntityContext: " + e.getMessage());
     public void ejbActivate()
          id = (String)context.getPrimaryKey();
     public void ejbPassivate()
          id = null;
     public void ejbLoad()
          try
               loadRow();
          catch(Exception e)
               throw new EJBException("ejbLoad: " + e.getMessage());
     public void ejbStore()
          try
               storeRow();
          catch(Exception e)
               throw new EJBException("ejbStore: " + e.getMessage());
     public void ejbPostCreate(String id, String firstname, String lastname, String address, boolean contactno)
     /****************************** DataBase Routines ******************************/
     private void makeConnection() throws NamingException, SQLException
          InitialContext ic = new InitialContext();
          DataSource ds = (DataSource) ic.lookup(dbName);
          conn = ds.getConnection();
     private void insertRow(String id, String firstname, String lastname, String address, int contactno) throws SQLException
          String insertStatement = "inset into ADDRESSES values (?, ?, ?, ?, ?)";
          PreparedStatement prepStmt = conn.prepareStatement(insertStatement);
          prepStmt.setString(1, id);
          prepStmt.setString(2, firstname);
          prepStmt.setString(3, lastname);
          prepStmt.setString(4, address);
          prepStmt.setDouble(5, contactno);
          prepStmt.executeUpdate();
          prepStmt.close();
     private void deleteRow(String id) throws SQLException
          String deleteStatement = "delete from ADDRESSES where id = ?";
          PreparedStatement prepStmt = conn.prepareStatement(deleteStatement);
          prepStmt.setString(1, id);
          prepStmt.executeUpdate();
          prepStmt.close();
     private boolean selectByPrimaryKey(String primaryKey) throws SQLException
          String selectStatement = "select id from ADDRESSES where id = ? ";
          PreparedStatement prepStmt = conn.prepareStatement(selectStatement);
          prepStmt.setString(1, primaryKey);
          ResultSet rs = prepStmt.executeQuery();
          boolean result = rs.next();
          prepStmt.close();
          return result;
     private Collection selectByLastName(String lastname) throws SQLException
          String selectStatement = "select id from ADDRESSES where lastname = ? ";
          PreparedStatement prepStmt = conn.prepareStatement(selectStatement);
          prepStmt.setString(1, lastname);
          ResultSet rs = prepStmt.executeQuery();
          ArrayList a = new ArrayList();
          while(rs.next())
               String id = rs.getString(1);
               a.add(id);
          prepStmt.close();
          return a;
     private void loadRow() throws SQLException
          String selectStatement = "select firstname, lastname, address, contactno from ADDRESSES where id = ?";
          PreparedStatement prepStmt = conn.prepareStatement(selectStatement);
          prepStmt.setString(1, this.id);
          ResultSet rs = prepStmt.executeQuery();
          if(rs.next())
               this.firstname = rs.getString(1);
               this.lastname = rs.getString(2);
               this.address = rs.getString(3);
               this.contactno = rs.getInt(4);
               prepStmt.close();
          else
               prepStmt.close();
               throw new NoSuchEntityException("Row for id " + id + " not found in the dataBase");
     private void storeRow() throws SQLException
          String updateStatement = "update ADDRESSES set firstname = ?, lastname = ?, address = ? contactno = ? where id = ?";
          PreparedStatement prepStmt = conn.prepareStatement(updateStatement);
          prepStmt.setString(1, firstname);
          prepStmt.setString(2, lastname);
          prepStmt.setString(3, address);
          prepStmt.setInt(4, contactno);
          prepStmt.setString(5, id);
          int rowCount = prepStmt.executeUpdate();
          prepStmt.close();
          if(rowCount == 0)
               throw new EJBException("Storing row for id " + id + " failed.");
}

EJB questions should be posted in the EJB forum! :=)
I did find the compiler message a bit strange. Usually if I don't have a class defined it complains that it cannot find package_name.class_name (when I'm using packages for my own code).

Odd marshalling problems with EJB 3.0 stateless session bean

Hello,
I began encountering marshalling exceptions when invoking methods on a previously functionining facade bean. The problem seems to be almost arbitrary, in that certain packages receive marshalling exceptions, while others do not (my main client started failing, but then I realized that a simple test class was still working, along with oddly JSFs that invoke that main client, which fails outside of that scope). Is there some config issue with stateless session beans (in 3.0) that I might be missing? There are no duplicate versions of these class; they have not been modified; they've been compiled with the current IDE. Any help would be appreciated. Thanks.
full stack trace:
com.evermind.reflect.UndeclaredExceptionTypeException: oracle.oc4j.rmi.OracleRemoteException
     at __Proxy1.findAllViewRight(Unknown Source)
     at com.jwt.gui.menus.beans.ViewRightBean.<init>(ViewRightBean.java:34)
     at com.jwt.gui.menus.beans.ViewRightBean.main(ViewRightBean.java:63)
oracle.oc4j.rmi.OracleRemoteException: Invocation error: java.rmi.UnmarshalException: Error deserializing return-value: java.io.InvalidClassException: com.jwt.gui.menus.persistence.ViewRight; local class incompatible: stream classdesc serialVersionUID = 2365320765203750319, local class serialVersionUID = -8750611773395720631
     at com.evermind.server.rmi.RMICall.throwRecordedException(RMICall.java:142)
     at com.evermind.server.rmi.RMIClientConnection.obtainRemoteMethodResponse(RMIClientConnection.java:472)
     at com.evermind.server.rmi.RMIClientConnection.invokeMethod(RMIClientConnection.java:416)
     at com.evermind.server.rmi.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:63)
     at com.evermind.server.rmi.RecoverableRemoteInvocationHandler.invoke(RecoverableRemoteInvocationHandler.java:28)
     at com.evermind.server.ejb.StatelessSessionRemoteInvocationHandler.invoke(StatelessSessionRemoteInvocationHandler.java:43)
     at __Proxy1.findAllViewRight(Unknown Source)
     at com.jwt.gui.menus.beans.ViewRightBean.<init>(ViewRightBean.java:34)
     at com.jwt.gui.menus.beans.ViewRightBean.main(ViewRightBean.java:63)
     Nested exception is:
java.rmi.UnmarshalException: Error deserializing return-value: java.io.InvalidClassException: com.jwt.gui.menus.persistence.ViewRight; local class incompatible: stream classdesc serialVersionUID = 2365320765203750319, local class serialVersionUID = -8750611773395720631
     at com.evermind.server.rmi.RMICall.EXCEPTION_ORIGINATES_FROM_THE_REMOTE_SERVER(RMICall.java:109)
     at com.evermind.server.rmi.RMICall.throwRecordedException(RMICall.java:128)
     at com.evermind.server.rmi.RMIClientConnection.obtainRemoteMethodResponse(RMIClientConnection.java:472)
     at com.evermind.server.rmi.RMIClientConnection.invokeMethod(RMIClientConnection.java:416)
     at com.evermind.server.rmi.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:63)
     at com.evermind.server.rmi.RecoverableRemoteInvocationHandler.invoke(RecoverableRemoteInvocationHandler.java:28)
     at com.evermind.server.ejb.StatelessSessionRemoteInvocationHandler.invoke(StatelessSessionRemoteInvocationHandler.java:43)
     at __Proxy1.findAllViewRight(Unknown Source)
     at com.jwt.gui.menus.beans.ViewRightBean.<init>(ViewRightBean.java:34)
     at com.jwt.gui.menus.beans.ViewRightBean.main(ViewRightBean.java:63)
oracle.oc4j.rmi.OracleRemoteException: Invocation error: java.rmi.UnmarshalException: Error deserializing return-value: java.io.InvalidClassException: com.jwt.gui.menus.persistence.ViewRight; local class incompatible: stream classdesc serialVersionUID = 2365320765203750319, local class serialVersionUID = -8750611773395720631
     at com.evermind.server.rmi.RMICall.throwRecordedException(RMICall.java:142)
     at com.evermind.server.rmi.RMIClientConnection.obtainRemoteMethodResponse(RMIClientConnection.java:472)
     at com.evermind.server.rmi.RMIClientConnection.invokeMethod(RMIClientConnection.java:416)
     at com.evermind.server.rmi.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:63)
     at com.evermind.server.rmi.RecoverableRemoteInvocationHandler.invoke(RecoverableRemoteInvocationHandler.java:28)
     at com.evermind.server.ejb.StatelessSessionRemoteInvocationHandler.invoke(StatelessSessionRemoteInvocationHandler.java:43)
     at __Proxy1.findAllViewRight(Unknown Source)
     at com.jwt.gui.menus.beans.ViewRightBean.<init>(ViewRightBean.java:34)
     at com.jwt.gui.menus.beans.ViewRightBean.main(ViewRightBean.java:63)
     Nested exception is:
java.rmi.UnmarshalException: Error deserializing return-value: java.io.InvalidClassException: com.jwt.gui.menus.persistence.ViewRight; local class incompatible: stream classdesc serialVersionUID = 2365320765203750319, local class serialVersionUID = -8750611773395720631
     at com.evermind.server.rmi.RMICall.EXCEPTION_ORIGINATES_FROM_THE_REMOTE_SERVER(RMICall.java:109)
     at com.evermind.server.rmi.RMICall.throwRecordedException(RMICall.java:128)
     at com.evermind.server.rmi.RMIClientConnection.obtainRemoteMethodResponse(RMIClientConnection.java:472)
     at com.evermind.server.rmi.RMIClientConnection.invokeMethod(RMIClientConnection.java:416)
     at com.evermind.server.rmi.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:63)
     at com.evermind.server.rmi.RecoverableRemoteInvocationHandler.invoke(RecoverableRemoteInvocationHandler.java:28)
     at com.evermind.server.ejb.StatelessSessionRemoteInvocationHandler.invoke(StatelessSessionRemoteInvocationHandler.java:43)
     at __Proxy1.findAllViewRight(Unknown Source)
     at com.jwt.gui.menus.beans.ViewRightBean.<init>(ViewRightBean.java:34)
     at com.jwt.gui.menus.beans.ViewRightBean.main(ViewRightBean.java:63)

Hello,
I began encountering marshalling exceptions when invoking methods on a previously functionining facade bean. The problem seems to be almost arbitrary, in that certain packages receive marshalling exceptions, while others do not (my main client started failing, but then I realized that a simple test class was still working, along with oddly JSFs that invoke that main client, which fails outside of that scope). Is there some config issue with stateless session beans (in 3.0) that I might be missing? There are no duplicate versions of these class; they have not been modified; they've been compiled with the current IDE. Any help would be appreciated. Thanks.
full stack trace:
com.evermind.reflect.UndeclaredExceptionTypeException: oracle.oc4j.rmi.OracleRemoteException
     at __Proxy1.findAllViewRight(Unknown Source)
     at com.jwt.gui.menus.beans.ViewRightBean.<init>(ViewRightBean.java:34)
     at com.jwt.gui.menus.beans.ViewRightBean.main(ViewRightBean.java:63)
oracle.oc4j.rmi.OracleRemoteException: Invocation error: java.rmi.UnmarshalException: Error deserializing return-value: java.io.InvalidClassException: com.jwt.gui.menus.persistence.ViewRight; local class incompatible: stream classdesc serialVersionUID = 2365320765203750319, local class serialVersionUID = -8750611773395720631
     at com.evermind.server.rmi.RMICall.throwRecordedException(RMICall.java:142)
     at com.evermind.server.rmi.RMIClientConnection.obtainRemoteMethodResponse(RMIClientConnection.java:472)
     at com.evermind.server.rmi.RMIClientConnection.invokeMethod(RMIClientConnection.java:416)
     at com.evermind.server.rmi.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:63)
     at com.evermind.server.rmi.RecoverableRemoteInvocationHandler.invoke(RecoverableRemoteInvocationHandler.java:28)
     at com.evermind.server.ejb.StatelessSessionRemoteInvocationHandler.invoke(StatelessSessionRemoteInvocationHandler.java:43)
     at __Proxy1.findAllViewRight(Unknown Source)
     at com.jwt.gui.menus.beans.ViewRightBean.<init>(ViewRightBean.java:34)
     at com.jwt.gui.menus.beans.ViewRightBean.main(ViewRightBean.java:63)
     Nested exception is:
java.rmi.UnmarshalException: Error deserializing return-value: java.io.InvalidClassException: com.jwt.gui.menus.persistence.ViewRight; local class incompatible: stream classdesc serialVersionUID = 2365320765203750319, local class serialVersionUID = -8750611773395720631
     at com.evermind.server.rmi.RMICall.EXCEPTION_ORIGINATES_FROM_THE_REMOTE_SERVER(RMICall.java:109)
     at com.evermind.server.rmi.RMICall.throwRecordedException(RMICall.java:128)
     at com.evermind.server.rmi.RMIClientConnection.obtainRemoteMethodResponse(RMIClientConnection.java:472)
     at com.evermind.server.rmi.RMIClientConnection.invokeMethod(RMIClientConnection.java:416)
     at com.evermind.server.rmi.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:63)
     at com.evermind.server.rmi.RecoverableRemoteInvocationHandler.invoke(RecoverableRemoteInvocationHandler.java:28)
     at com.evermind.server.ejb.StatelessSessionRemoteInvocationHandler.invoke(StatelessSessionRemoteInvocationHandler.java:43)
     at __Proxy1.findAllViewRight(Unknown Source)
     at com.jwt.gui.menus.beans.ViewRightBean.<init>(ViewRightBean.java:34)
     at com.jwt.gui.menus.beans.ViewRightBean.main(ViewRightBean.java:63)
oracle.oc4j.rmi.OracleRemoteException: Invocation error: java.rmi.UnmarshalException: Error deserializing return-value: java.io.InvalidClassException: com.jwt.gui.menus.persistence.ViewRight; local class incompatible: stream classdesc serialVersionUID = 2365320765203750319, local class serialVersionUID = -8750611773395720631
     at com.evermind.server.rmi.RMICall.throwRecordedException(RMICall.java:142)
     at com.evermind.server.rmi.RMIClientConnection.obtainRemoteMethodResponse(RMIClientConnection.java:472)
     at com.evermind.server.rmi.RMIClientConnection.invokeMethod(RMIClientConnection.java:416)
     at com.evermind.server.rmi.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:63)
     at com.evermind.server.rmi.RecoverableRemoteInvocationHandler.invoke(RecoverableRemoteInvocationHandler.java:28)
     at com.evermind.server.ejb.StatelessSessionRemoteInvocationHandler.invoke(StatelessSessionRemoteInvocationHandler.java:43)
     at __Proxy1.findAllViewRight(Unknown Source)
     at com.jwt.gui.menus.beans.ViewRightBean.<init>(ViewRightBean.java:34)
     at com.jwt.gui.menus.beans.ViewRightBean.main(ViewRightBean.java:63)
     Nested exception is:
java.rmi.UnmarshalException: Error deserializing return-value: java.io.InvalidClassException: com.jwt.gui.menus.persistence.ViewRight; local class incompatible: stream classdesc serialVersionUID = 2365320765203750319, local class serialVersionUID = -8750611773395720631
     at com.evermind.server.rmi.RMICall.EXCEPTION_ORIGINATES_FROM_THE_REMOTE_SERVER(RMICall.java:109)
     at com.evermind.server.rmi.RMICall.throwRecordedException(RMICall.java:128)
     at com.evermind.server.rmi.RMIClientConnection.obtainRemoteMethodResponse(RMIClientConnection.java:472)
     at com.evermind.server.rmi.RMIClientConnection.invokeMethod(RMIClientConnection.java:416)
     at com.evermind.server.rmi.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:63)
     at com.evermind.server.rmi.RecoverableRemoteInvocationHandler.invoke(RecoverableRemoteInvocationHandler.java:28)
     at com.evermind.server.ejb.StatelessSessionRemoteInvocationHandler.invoke(StatelessSessionRemoteInvocationHandler.java:43)
     at __Proxy1.findAllViewRight(Unknown Source)
     at com.jwt.gui.menus.beans.ViewRightBean.<init>(ViewRightBean.java:34)
     at com.jwt.gui.menus.beans.ViewRightBean.main(ViewRightBean.java:63)

Help with Ipod 80GB (detailed message as to what I have tried) error -50

Originally I had downoaded some music and put it into itunes and synced it with my brand new Ipod 80GB. Everything was fine. I deleted my songs from my hard drive and itunes. A few weeks later I had a new batch of songs that I wanted to put onto my ipod through itunes. There was a message saying there was a new version of software available and I downloaded it and everything haywire.
Now, here is what happens every time I hook my ipod up to my Dell using windows xp.
1. I plug it in and it tells me my ipod is synced to another cpu. Would I like to erase and sync to this cpu. I click that option.
2. I get back a message saying ipod cannot sync with an unknown error occuring -50
3. I tried apple.com's approach to fixing this error message on windows xp by copying these files into notebook and opening them:
regsvr32 /s softpub.dll
regsvr32 /s wintrust.dll
regsvr32 /s dssenh.dll
regsvr32 /s rsaenh.dll
regsvr32 /s gpkcsp.dll
regsvr32 /s sccbase.dll
regsvr32 /s slbcsp.dll
regsvr32 /s mssip32.dll
regsvr32 /s cryptdlg.dll
regsvr32 /s initpki.dll
4. after letting that window close it instructs that I now open itunes and hook up ipod and restore things.
5. After hooking things up i get the same message as before. my ipod is synced to another cpu. Would I like to erase and sync to this cpu. I click that option again.
6. I get the same error -50 message.
7. I repeat the same process of copying those files into notebook and starting all over.
8. I get the same message "my ipod is synced to another cpu. Would I like to erase and sync to this cpu. This time I cancel the erase and sync and just try to restore. It tells me it has restored and will start again in 15 seconds.
9. I get the same message as before "my ipod is synced to another cpu. Would I like to erase and sync to this cpu."
10. This time I click cancel and try to update my software from 1.0.3 to the new version of 1.1.
It tells me it has been updated wait 15 seconds and it should be fine.
11. I then get the same message as before "my ipod is synced to another cpu. Would I like to erase and sync to this cpu."
I am clueless as to what to do now. I was detailed so I could hopefully get some specific advice as to what to do next.

Finally a solution!!!!!!!!!!!
While I tried every option that was passed along here and none of them worked I appreciate the help and suggestions. I took it to the apple store and they fixed it. They said it was messed up because I probably had plugged it into too many different computers but i only plugged it inti one other computer but who cares.
Here is what to do if you are desperate: Most owners know that if you push the menu and the center button at the same time the ipod will restart. WELL!!!! If you can't do anything with your ipod you need to press the center button and the play/pause button at the same time and this will restart the ipod and put it in disk mode. Connect it to your cpu and open itunes. It will erase eveyrhing and reset it from scratch. All the way back to having to name your ipod again. Just a thought for those who don't mind losing their info and if they already have it saved to put back on.

Help with EJB & JNDI

I am getting following error while compiling EJB session client
javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial
     at javax.naming.spi.NamingManager.getInitialContext(Unknown Source)
     at javax.naming.InitialContext.getDefaultInitCtx(Unknown Source)
     at javax.naming.InitialContext.getURLOrDefaultInitCtx(Unknown Source)
     at javax.naming.InitialContext.lookup(Unknown Source)
     at client.SimpleSessionClient.main(SimpleSessionClient.java:20)
My session client code is
package client;
import java.util.Hashtable;
import beans.*;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;
import javax.ejb.*;
import javax.naming.spi.InitialContextFactory;
import javax.naming.NamingException;
public class SimpleSessionClient {
     public static void main(String[] args) {
          try {
               Context jndiContext = new InitialContext();
               Object ref = jndiContext.lookup("ejb/beans.SimpleSession");
               SimpleSessionHome home = (SimpleSessionHome)PortableRemoteObject.
               narrow(ref, SimpleSessionHome.class);
               SimpleSession simpleSession = home.create();
               for (int i=0; i<args.length; i++) {
                    String returnedString = simpleSession.getEchoString(args);
                    System.out.println("Sent String:" + args[i] +", " +
                              "recieved string" + returnedString);
          } catch(Exception e) {
               e.printStackTrace();
I have include j2ee.jar in the classpath too and I could deploy the EJB home and remote interface as well as Bean class in sun application server.
Any help wuld be appreciated.
Rashmi

I am using Sun App server for deploying EJB. In the same system, I am running eclipse where I run the EJB client with JNDI to connect to EJB component.
If this is not the right way, please suggest. I am trying to do this for the first time and completely clueless. I have tried to include different jar files in my classpath and even I am in the process of downloading websphere in case that could help me.

Need some help with backing up external hard drive using Time Machine

Hi all, I'm trying to work out the best way to back up multiple iPhoto libraries using Time Machine.
At the moment I have got an iMac and Macbook Pro, both of which have an iPhoto library (with different content). Currently these are not backed up at all. So what I want to do is back both up to an NAS drive, which I know is straightforward.
What I also want to do is create one iPhoto library on an external hard drive that I can use with my MBP, and then delete the iPhoto library on my MBP to free up some hard drive space (it's running slower and slower and I'm hoping that this might help it run quicker).
So, as I want to have the library on two seperate drives in case one fails, what I want to know is whether I could use Time Machine to back up my external hard drive as well as the internal drive of my MBP? Also, would I need to have the external drive connected at all times for Time Machine to "see" it?
I hope that makes sense, all I seem to be doing currently is going round and round and can't work out whether what I want to do is possible or not.
Thanks in advance

If I understand your goal correctly, you're considering using Time Machine as external storage, and it doesn't work that way. Time Machine keeps around what it can, and older stuff gets flushed as the storage available to Time Machine reaches its lower threshold due to the addition of newer stuff. When the older stuff gets flushed is not predictable.
It is possible to have several Time Machine backups aimed at the same target (this can be done with Apple Time Capsule, for instance), though you might want to partition the disks to ensure that the intended amount of storage is available. Different NAS drives have different features here.
NAS is only as fast as your network connection, and that's almost always much slower than the in-box I/O connections; a local disk will be far faster than a NAS disk, just because of the bottleneck that is wired gigabit Ethernet, and most WiFi is slower and sometimes far slower than wired gigabit Ethernet. FWIW.
If your MacBook Pro is old enough and you have $$ but aren't in a position to spend $$$$$ on a newer model, then consider an in-place drive upgrade.
If your network connection is fast enough to transfer the amount of data you're dealing with in a reasonable time, there are also hosted storage options.
You can use a NAS drive as storage independent of Time Machine, and relocate stuff there. (You'll still want to have backups of that data, as NAS drives — even NAS with RAID — can still lose files, become corrupted or otherwise ruin your data day.
As for your performance, keeping about 10% or so free on the disks is the local preference, but it's worth reviewing the performance of the whole system — Performance Monitor, Console.app, etc — to see if there's something else going on, or if your system load and personal performance expectations are exceeding what your MacBook Pro can provide.

Help with EJB 3.0 MEssage Driver Bean Wizard in NetBeans 5.5 preview

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