Threaded servlet

Hello
I am reading a file in a servlet with url.openStream and getting inconsistent results. Is/how it possible to thread the entire reading process from within one of methods of the servlet? If this is doable, but not scalable what is a better approach?

Is there a way I can get the servlet to wait until the threaded
object finishes? As previously mentioned, this somewhat defeats the idea of using a separate thread.
The problem is that when I do it
all within the method sometimes I get the full file
sometimes all but the last few parts. I am assuming
that putting that part in a separate thread and
calling that within the servlet, as you recommend as
a separate object, will eliminate that inconsistency.Try taking the code you've written to read from the file and testing it in a standard java class, a test class. Verify that the code is working outside of the servlet environment first. It may be that the code that is reading the file is flawed.

Similar Messages

Regarding single threaded servlet

why pool of instances for single threaded servlet?

why pool of instances for single threaded servlet
the container instantiates the servlet when it starts up or when the first request for that servlet comes, instantiation takes place only once.
when the request comes for a servlet, the container create a thread and gives it response and request object , when another request comes in it creates a thread and gives it request and response object, this process goeson..

Single threaded servlet

I need to connect to the database which has to handle multiple requests. So the best approach is to use single threaded servlet using pool of servlet instances.I read the document of single threaded servlet.I ahve gone through the code. here is the code given below:
import java.io.*;
import java.sql.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class SingleThreadConnection extends HttpServlet
implements SingleThreadModel {
Connection con = null; // database connection, one per pooled instance
public void init() throws ServletException {
// Establish the connection for this instance
try {
con = establishConnection();
con.setAutoCommit(false);
catch (SQLException e) {
throw new ServletException(e.getMessage());
public void doGet(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
res.setContentType("text/plain");
PrintWriter out = res.getWriter();
try {
// Use the connection uniquely assigned to this instance
Statement stmt = con.createStatement();
// Update the database any number of ways
// Commit the transaction
con.commit();
catch (SQLException e) {
try { con.rollback(); } catch (SQLException ignored) { }
public void destroy() {
if (con != null) {
try { con.close(); } catch (SQLException ignored) { }
private Connection establishConnection() throws SQLException {
// Not implemented. See Chapter 9.
i need to know the code of establish connection. In my point of view,is it the database connection code or connection pool.But iam sure it cannot be connection pool.
Can you clear me with the code of how to establish the connection?
thanks in advance.

Preethi05 wrote:
private Connection establishConnection() throws SQLException {
// Not implemented. See Chapter 9.
i need to know the code of establish connection. In my point of view,is it the database connection code or connection pool.But iam sure it cannot be connection pool.
Can you clear me with the code of how to establish the connection?My guess is its the connection pool here, its a guess though. Also its mentioned there to see chapter 9, that might say something.
regards,'
a_joseph

Question about Threads/Servlets

Let's say I have a servlet that opens a socket connection to a server application. On the server end, I would have to make a thread for each connection. But what about the Servlet? do I have to deal with Threads on the servlet side or does the servlet engine takes care of that?

Unless your servlet implements the SingleThreadModel interface, the servlet container shoud take care of running each request to your servlet in a separate thread.
Andy Nguyen

Repeated acces to shared resources in servlets question.

Hello everybody,
I've made a few servlets by now and i was wondering if it is safe to use the following code if lots of users acces the servlet at approximately the same time. (multi-threaded not single-threaded servlet).
public class someServlet ..
private String receivedParam;
private HttpSession session;
//A function that receives the request
public void receiveRequest(HttpServletRequest req,HttpServletResponse res)
session = req.getSession();
receivedParam = req.getParam("param");
session.setAttribute("Action",receivedParam);
Do Something using sesion and receivedparam...
Is It better to do the following:
public class someServlet ..
//A function that receives the request
public void receiveRequest(HttpServletRequest req,HttpServletResponse res)
String receivedParam =null;
HttpSession session =null;
session = req.getSession();
receivedParam = req.getParam("param");
session.setAttribute("Action",receivedParam);
Do Something using sesion and receivedparam...
Lots of feedback appreciated.

NO! You dumb ass !
It's not safe!Replying to yourself after almost 2.5 years must be great!!! :-)

Servlet that never stops...

Hi,
Is possible to do a threaded servlet that never finishes to response? something like a servlet that, when called, connect to a database and send the results of a query to client, update the database and try the query again ... like:
while(true)
rs = stmt.executeQuery("select * from table where flag = 1");
while(rs.next())
os.writeChars(rs.getString(1));
stmt.executeUpdate("update table set flag = 2")
os.flush();
In another place, somebody will insert data in the database, with the flag set to 1 ... so the servlet will ever try to select data that are not sent to client .... then send the new data to client ...
Is this possible? I tried to do something like this, but when I put the thread.sleep() the servlet stopped ... May I do this? I don't know if the server memory will crashes if I do this ... but I really want to try ....
If someone have an example .... to send text, for example .... while(true){out.println("text")} ...
Thanks ....
LMMJ

Allright ... in other words ....
I made a servlet that works ... in the browser it is stopped ... but its thread is already running ... If I insert another registry on my database ... with the flag set up to 1 ... after 5 seconds the flag is changed to 2 by the servlet .... the servlet IS RUNNING .... but I can�t response to browser after the first loop on my thread ... I lost the connection to the browser when I sleeps the thread ... how can I send data to the browser .... make another thing ... and send data again .... without lost the connection? or .... send data to the browser in parts .... this could solve my problem ....
thanks
LMMJ

Call unix script within Servlet - need to wait for completetion

Hi,
I have a servlet which grabs some information from my web form and then calls a unix script.
This already works fine and does what i need it to do. I now need to add some functionality where i can get the servlet to wait for the unix script to complete before carrying on and then redirecting back to the user.
the code i have for the current servlet is:
         * EXECUTE THE UNIX COMMAND.
        Runtime   oRuntime =     Runtime.getRuntime();
        Process   oProcess   =     null;
        String[]      cmd          =     {"/bin/sh", "-c", sPath}; // UNIX
         * ERROR CODES 3 = File not found
        try
          oProcess = oRuntime.exec(cmd);
        catch(Throwable t)
          t.printStackTrace();
        }I am assuming i need some sort of wait method to handle this. Any help would be greatly appreciated.
Thanks
Graham

ok.. you code is fine.. you can run any shell script or program using the exec() method. if you need to wait till the process finishes then you need to call the method waitFor() in class Process.. the method blocks the parent thread (servlet) till the sub process (your exec'd script or program) terminates.
hope that solves your problem.. :-)
Pls tell me one more thing.. are you using netBeans or Eclipse for executing the programs or you use standalone tomcat to deploy the application. I have problem in execing programs when i deploy in tomcat 5.5 and the same application works fine in netBeans 5.0. if you know pls help me too..
Thanks,
-- abdel Olakara.

Doubt on servlet architecture, URGENT

Hello Java experts!!
Please claurify my small doubt
In servlet architecture, if i write one servlet,
multi threading concept of servlets will be implemented in Servlet level or
doPost(doGet) level.
Because I wrote all functions out side the dopost method without synchronization.
And i am calling all the functions in side the dopost.
Will it handle multiple requests??
Regards,
SRAO

Yes it will handle multiple requests but you may have issues if two requests try to modify the same value at the same time. Servlets are not thread safe by default - it is up to you to deal with thread safety in the libraries your servlet is using, unless you use the single threaded servlet model by having your servlet implement the SingleThreadModel interface.
Sincerely,
Anthony Eden

How do i run a servlet??????

running servlets:i downloaded jsdk but how do i run a servlet? i got the error
C:\WINDOWS\Desktop>javac HTTPGetServlet.java
Exception in thread "main" java.lang.NoClassDefFoundError: com/sun/tools/javac/M
ain
when i tried to run my servlet, please help
thanks

As mentioned in another post in the thread, servlets run from within a web server that has pre-loaded the jvm and serves web requests. Often they are called 'sevlet containers' as they act like a wrapper program for the actual vm. Tomcat is such a web server, quite a popular one for running servlets, and is considered the reference implementation for a sevlet/jsp server. you can read up on it at...
http://jakarta.apache.org/tomcat/index.html
To get you started, this is what i did to set up tomcat. Im using RedHat Linux at home, so this may differ to what you have to do initially.
First, make sure you have at least the jsdk and jsdk ee installed and the appropiate JAVA_HOME and J2EE_HOME environment variables set.
I am using the Apache web server to handle web page requests on my box. If the request is for a context containing a servlet or jsp file (context is a tomcat term for a particular location or path in the url) then apache passes the request to tomcat via a apache module and a special protocol. Tomcat then runs the .class file or .jsp file, returns the output to apache which then returns the output back to the browser. So initially you should set up and have the apache web server running.
Next download and install the jserv or tomcat module for apache, which apache uses to communicate with tomcat via a special protocol, and the tomcat rpms from...
http://jakarta.apache.org/builds/jakarta-tomcat/release/v3.2.3/rpms/
...Im using 3.2.3 which works fine. you may try the later versions if you like.
Install the tomcat rpms. They should dump a whole lot of stuff in a /var/tomcat directry, including some nice sample and admin apps. if you had downloaded and installed the tomcat-manuals rpm you can find lots of helpful information in the /usr/doc/tomcat-{your version here}/ directry. This is what you should probably read through now!
Once that is done, its simply a matter of adding a reference in your httpd.conf file to the tomcat.conf file in the tomcat/conf dir (if you want to have complete control over the tomcat module and contexts) or tomcat-apache.conf (in the same directry) if youd like tomcat to handel its own configuration of apache. something like...
include /var/tomcat/conf/tomcat.conf
...should do.
then run tomcat start (in /usr/bin/) and apache and away you go. You should be able to point your browser to your.server.com/admin/ and get the tomcat admin tools. This allows you to add view and delete contexts to your server (say for separating different server-side applications). your.server.com/examples/ has some nice stuff as well.
Hope this helps. I warn you im not an expert and haven't looked at this stuff for some time. I probably have something wrong so please, experts, if you see something stuffed up let us know.

Servlets and Actions

Hi,
i defined an ActionServlet in the web.xml and some "Actions" in the struts-config.xml.
If all the requests are managed by the servlet defined in the web.xml, in case i had a lot of requests would it be better defined more ActionServlet in the web.xml which refers to different struts-config.xml ?
I think that having more servlet is much better to manage the load of the entire application.
Any suggestions ?
Cheers.
Stefano

"...If all the requests are managed by the servlet defined in the web.xml, in case i had a lot of requests would it be better defined more ActionServlet in the web.xml which refers to different struts-config.xml ?..."
No. Using a single, multi-threaded servlet is the most efficient way to process multiple requests. Only one instance of the ActionServlet is required for the whole app. Bottom line - multiple threads are more efficient than multiple instances.

Synchronized (this) inside a servlet

guys, is it wrong to use synchronized (this)" in a servlet????? what do you think will happen if this code is inside doPost in a servlet
synchronized (this) {
this.wait(retry);
}

Definitely do not synchronize on the servlet ... you can certainly restrict the granularity of the sycnronization ... you will be turning your servlet into a single threaded servlet ... yikes.
Anyway, I have synchronized on the session and for the most part it works. After some time I did run into some locking problems which I presume were because the container running in a different thread needed to acquire the lock on the session to do something ... just guessing.
Anyway, since then I have relied on a lock object that I place inside the session ... I lock on that object rather than on the session and have found this to work without any problem at all.

Error 403 returned from WebSphere running Policy Agent

Hi,
I'm getting an error 403 (forbidden) in my browser when I try to access a URL that I have protected using a Policy that I have setup in SAM.
My configuration is as follows:
Sun Access Manager 6 2005Q1 on Solaris
WebSphere AppServer 5.1.1.5 on Win 2000
WebSphere 5.0 Policy Agent 2.1 on Win 2000
At the moment, all I'm trying to do is protect a URL which is contained in a simple WAR file which I have deployed on WAS.
As per the J2EE Policy Agents guide, I have installed the Agent Filter by adding the following into web.xml
<web-app>
<display-name>...</display-name>
<description>...</description>
<filter>
<filter-name>Agent</filter-name>
<display-name>Agent</display-name>
<description>SunTM ONE Identity Server Policy Agent</description>
<filter-class>com.sun.identity.agents.websphere.AmWAS50AgentFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>Agent</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
I've switched on Global Security in WAS and successfully logged back into the WebSphere Console using amldapuser. This confirms that the Agent Realm is working correctly.
In SAM I set up a Policy with a Rule that specified the URL I want to protect. I added a Subject to this Rule of type LDAP User. The user I chose was amadmin (for the moment).
I also configued an Agent with agentRootURL=http://<WAS fully qualified domain name>:9080/
When I try to access the URL of the servlet in the WAR, I am redirected to the SAM's login page
http://<SAM fully qualified domain name>/amserver/UI/Login?goto=http%3A%2F%2F<WAS fully qualified domain name>%3A9080%2FRoamingApp%2FRoaming
However, when I enter the amadmin/ <password> error 403 is returned to the browser.
I've checked the logs on SAM
From amAuthentication.access
"2005-07-28 11:58:15" "Login Success" LDAP dc=acme,dc=com INFO uid=amAdm
in,ou=People,dc=acme,dc=com <WAS IP address> "cn=dsameuser,ou=DSAME Users,dc=acme,
dc=com" <WAS IP address>
From amSSO.access
"2005-07-28 11:58:15" "SESSION CREATE" amSSO.access dc=acme,dc=com I
NFO uid=amAdmin,ou=People,dc=acme,dc=com <WAS IP address> "cn=dsameuser,ou=
DSAME Users,dc=acme,dc=com" <WAS IP address>
From agent.log (Policy Agent on Win 2000)
[Thursday, July 28, 2005 11:58:15 AM BST] [null]
Access to http://<WAS fully qualified domain name>:9080/RoamingApp/Roaming denied for user UNKNOWN
Perhaps I dont have the Policy in SAM configured correctly..... if anyone has come across this kind of problem before, I would greatly appreciate any help they can give me.
Thanks,
Justin

Thanks for getting back to me Jerry.
I had a look at the role-to-principal mappings you suggested. To do this I added a security constraint to my web.xml file.
Then I reconfigured WebSphere so that the Active User Registry = LDAP instead of Custom. This allowed me to assign the LDAP group (in SAM) to the role (in web.xml). WAR file installed fine with these new bindings and I restarted WAS.
Unfortunately, I'm still getting Error 403 in the browser!
Any ideas as to what I might be doing wrong? Any help you can give me would be much appreciated.
This is the amFilter log file from the Policy Agent...
07/29/2005 05:48:44:980 PM IST: Thread[Servlet.Engine.Transports : 2,5,main]
AmFilter: incoming request =>
HttpServletRequest: class => com.ibm.ws.webcontainer.srt.SRTServletRequest@1af52898
     Character Encoding     : null
     Content Lenght          : -1
     Content Type          : null
     Locale               : en_IE
     Accept Locales:
          en_IE
     Protocol          : HTTP/1.1
     Remote Address          : 172.20.13.96
     Remote Host          : 172.20.13.96
     Scheme               : http
     Server Name          : dubwrk1589.ie.pri.o2.com
     Server Port          : 9080
     Is Secure          : false
     Auth Type          : null
     Context Path          : /RoamingApp
     Cookies:
          amFilterParam: AQIC5wM2LY4Sfcx0xX1Z1+1tK4SfLh/aCFlbIGuRNEPcAVc=
          amFilterRDParam: AQIC5wM2LY4Sfcwb7v6Sof6MpnvtyR8nae7hiKN7Y11QjCagyWAs9LzbAeB9Q4TP8VjruhK+oYForXxw/qq6TqbMAN1PlT1YOQI3Vy92iAaJ2N9x2bSRaUU7NlwZg8oTti+JOLdiRMTzwO17jIoWwCIx/0CtoQXpkX/meuAoFwf1feyAEp2NvK7AIbE82f/p8o4LxQbhK2NQNec=
          WASReqURL: http://dubwrk1589.ie.pri.o2.com:9080/RoamingApp/Roaming
          JSESSIONID: 0000HRZTVpt84dvtjaLaKWBnwzu:-1
     Headers:
          accept:
               image/gif
               image/x-xbitmap
               image/jpeg
               image/pjpeg
               application/msword
               application/vnd.ms-excel
               application/vnd.ms-powerpoint
               application/x-shockwave-flash
          referer:
               http://sam.digifone.com/amserver/UI/Login?goto=http%3A%2F%2Fdubwrk1589.ie.pri.o2.com%3A9080%2FRoamingApp%2Flogin.jsp
          accept-language:
               en-ie
          cookie:
               amFilterParam=AQIC5wM2LY4Sfcx0xX1Z1+1tK4SfLh/aCFlbIGuRNEPcAVc=; amFilterRDParam=AQIC5wM2LY4Sfcwb7v6Sof6MpnvtyR8nae7hiKN7Y11QjCagyWAs9LzbAeB9Q4TP8VjruhK+oYForXxw/qq6TqbMAN1PlT1YOQI3Vy92iAaJ2N9x2bSRaUU7NlwZg8oTti+JOLdiRMTzwO17jIoWwCIx/0CtoQXpkX/meuAoFwf1feyAEp2NvK7AIbE82f/p8o4LxQbhK2NQNec=; WASReqURL=http://dubwrk1589.ie.pri.o2.com:9080/RoamingApp/Roaming; JSESSIONID=0000HRZTVpt84dvtjaLaKWBnwzu:-1
          accept-encoding:
               gzip
               deflate
          user-agent:
               Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR 1.1.4322)
          host:
               dubwrk1589.ie.pri.o2.com:9080
          connection:
               Keep-Alive
          cache-control:
               no-cache
     Method               : GET
     Path Info          : null
     Path Trans          : null
     Query String          : null
     Remote User          : null
     Requested Session ID     : 0000HRZTVpt84dvtjaLaKWBnwzu:-1
     Request URI          : /RoamingApp/login.jsp
     Servlet Path          : /login.jsp
     Session               : true
     User Principal          : null
     Attributes:
          com.ibm.servlet.engine.webapp.dispatch_type: forward
07/29/2005 05:48:44:980 PM IST: Thread[Servlet.Engine.Transports : 2,5,main]
FQDNHandler: Incoming Server Name: [dubwrk1589.ie.pri.o2.com] Result: null
07/29/2005 05:48:44:980 PM IST: Thread[Servlet.Engine.Transports : 2,5,main]
PatternRule{*/j_security_check}.matchString(/RoamingApp/login.jsp) => false
07/29/2005 05:48:44:980 PM IST: Thread[Servlet.Engine.Transports : 2,5,main]
NotEnforcedListManager.isNotEnforced(/RoamingApp/login.jsp) => false
07/29/2005 05:48:44:980 PM IST: Thread[Servlet.Engine.Transports : 2,5,main]
AmFilter: Login attempt number: 10
07/29/2005 05:48:44:980 PM IST: Thread[Servlet.Engine.Transports : 2,5,main]
AmFilter: SSO Validation failed for null
07/29/2005 05:48:44:980 PM IST: Thread[Servlet.Engine.Transports : 2,5,main]
AmFilter: Reseting Cookies in Response
07/29/2005 05:48:44:980 PM IST: Thread[Servlet.Engine.Transports : 2,5,main]
WARNING: AmFilter: Login attempt number 10 failed for request URI: /RoamingApp/login.jsp
07/29/2005 05:48:44:980 PM IST: Thread[Servlet.Engine.Transports : 2,5,main]
URLFailoverHelper: Checking if http://sam.digifone.com:80/amserver/UI/Login is available
07/29/2005 05:48:44:980 PM IST: Thread[Servlet.Engine.Transports : 2,5,main]
URLFailoverHelper: URL http://sam.digifone.com:80/amserver/UI/Login is available
07/29/2005 05:48:44:980 PM IST: Thread[Servlet.Engine.Transports : 2,5,main]
URLFailoverHelper: getAvailableURL() => http://sam.digifone.com:80/amserver/UI/Login
07/29/2005 05:48:44:980 PM IST: Thread[Servlet.Engine.Transports : 2,5,main]
AmFilter: redirectURL is: http://sam.digifone.com:80/amserver/UI/Login?goto=http%3A%2F%2Fdubwrk1589.ie.pri.o2.com%3A9080%2FRoamingApp%2Flogin.jsp
07/29/2005 05:48:44:980 PM IST: Thread[Servlet.Engine.Transports : 2,5,main]
WARNING: AmFilter: redirect attempt limit reached for http://sam.digifone.com:80/amserver/UI/Login?goto=http%3A%2F%2Fdubwrk1589.ie.pri.o2.com%3A9080%2FRoamingApp%2Flogin.jsp, access will be denied
07/29/2005 05:48:44:980 PM IST: Thread[Servlet.Engine.Transports : 2,5,main]
AmFilter: Using 403 forbidden to block access
07/29/2005 05:48:44:980 PM IST: Thread[Servlet.Engine.Transports : 2,5,main]
getResource: id = 20004
07/29/2005 05:48:44:980 PM IST: Thread[Servlet.Engine.Transports : 2,5,main]
AmFilter: result =>
FilterResult:
     Status      : FORBIDDEN
     RedirectURL     : null
     RequestHelper:
          null
     Data:
          null
07/29/2005 05:48:44:980 PM IST: Thread[Servlet.Engine.Transports : 2,5,main]
getResource: id = 20008

Oracle jdbc driver error: oracle.jdbc.driver.T4C8Oall.getNumRows

Dear All,
I encounter this error in my application when I call storedprocedure with spring helper class: StoredProcedure
and my env is as follow:
spring 2.5.6
oracle 10g
oracle jdbc driver:10.2.0.1
websphere portal 5.1
this error is occur from time to time randomly, when it happens, the only workaround is to restart the portal server..Does anyone have any idea about this error?
ERROR [Thread-Servlet.Engine.Transports : 6] 2010-04-02 03:08:02,063 AuditReportSupportManagerImpl.getAuditReportLink(24) | java.lang.NullPointerException
at oracle.jdbc.driver.T4C8Oall.getNumRows(T4C8Oall.java(Compiled Code))
at oracle.jdbc.driver.T4CCallableStatement.executeForRows(T4CCallableStatement.java:975)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1190)
at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3370)
at oracle.jdbc.driver.OraclePreparedStatement.execute(OraclePreparedStatement.java:3476)
at oracle.jdbc.driver.OracleCallableStatement.execute(OracleCallableStatement.java:4400)
at com.ibm.ws.rsadapter.jdbc.WSJdbcPreparedStatement.pmiExecute(WSJdbcPreparedStatement.java:617)
at com.ibm.ws.rsadapter.jdbc.WSJdbcPreparedStatement.execute(WSJdbcPreparedStatement.java:401)
at org.springframework.jdbc.core.JdbcTemplate$5.doInCallableStatement(JdbcTemplate.java:987)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:936)
at org.springframework.jdbc.core.JdbcTemplate.call(JdbcTemplate.java(Compiled Code))
at org.springframework.jdbc.object.StoredProcedure.execute(StoredProcedure.java:117)
at com.hsbc.gbm.grt.raven.gui.procedure.BaseStoredProcedure.getSourceMap(BaseStoredProcedure.java:181)
at com.hsbc.gbm.grt.raven.gui.common.dao.impl.AuditReportSupportDaoImpl.getAuditReportLink(AuditReportSupportDaoImpl.java:21)
at sun.reflect.GeneratedMethodAccessor686.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java(Compiled Code))
at java.lang.reflect.Method.invoke(Method.java(Compiled Code))
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java(Compiled Code))
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java(Compiled Code))
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java(Compiled Code))
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java(Compiled Code))
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy114.getAuditReportLink(Unknown Source)
at com.hsbc.gbm.grt.raven.gui.common.service.impl.AuditReportSupportManagerImpl.getAuditReportLink(AuditReportSupportManagerImpl.java:21)
at com.hsbc.gbm.grt.raven.gui.common.util.Util.auditReportLinkHelper(Util.java:711)
at com.hsbc.gbm.grt.raven.gui.collateral.web.EligColatMapSumRespPro.doProcess(EligColatMapSumRespPro.java:50)
at com.hsbc.esf.requestprocessing.impl.ResponseProcessor.process(ResponseProcessor.java:42)
at com.hsbc.esf.requestprocessing.eventmapping.impl.ProcessorEventMappingAction.execute(ProcessorEventMappingAction.java:99)
at com.hsbc.esf.requestprocessing.portlet.eventmapping.PortletSuspendEventMappingAction.execute(PortletSuspendEventMappingAction.java:147)
at com.hsbc.esf.requestprocessing.eventmapping.impl.DefaultEventMapping.process(DefaultEventMapping.java:213)
at com.hsbc.esf.requestprocessing.flow.eventmapping.FlowEventMappingHandler.doProcess(FlowEventMappingHandler.java:117)
at com.hsbc.esf.requestprocessing.flow.eventmapping.FlowEventMappingHandler.process(FlowEventMappingHandler.java:70)
at com.hsbc.esf.jsf.requestprocessing.lifecycle.portlet.impl.AbstractLifecycle.render(AbstractLifecycle.java:166)
at com.hsbc.esf.jsf.requestprocessing.eventmapping.portlet.AbstractJSFEventMappingHandler.processRender(AbstractJSFEventMappingHandler.java:315)
at com.hsbc.esf.jsf.requestprocessing.eventmapping.portlet.AbstractJSFEventMappingHandler.process(AbstractJSFEventMappingHandler.java:283)
at com.hsbc.esf.requestprocessing.eventmapping.impl.ProcessorInvokerInterceptor.preProcess(ProcessorInvokerInterceptor.java:54)
at com.hsbc.esf.requestprocessing.impl.AbstractInterceptor.process(AbstractInterceptor.java:45)
at com.hsbc.esf.requestprocessing.impl.AbstractInterceptor.process(AbstractInterceptor.java:47)
at com.hsbc.esf.requestprocessing.impl.AbstractInterceptor.process(AbstractInterceptor.java:47)
at com.hsbc.esf.requestprocessing.impl.AbstractInterceptor.process(AbstractInterceptor.java:47)
at com.hsbc.esf.requestprocessing.impl.AbstractInterceptor.process(AbstractInterceptor.java:47)
at com.hsbc.esf.requestprocessing.impl.AbstractInterceptor.process(AbstractInterceptor.java:47)
at com.hsbc.esf.requestprocessing.impl.InterceptorChain.process(InterceptorChain.java:54)
at com.hsbc.esf.requestprocessing.portlet.impl.PortletFrontController.processRenderRequest(PortletFrontController.java:213)
at com.hsbc.esf.requestprocessing.portlet.impl.PortletFrontController.doRenderService(PortletFrontController.java:121)
at org.springframework.web.portlet.FrameworkPortlet.processRequest(FrameworkPortlet.java:483)
at org.springframework.web.portlet.FrameworkPortlet.doDispatch(FrameworkPortlet.java:453)
at javax.portlet.GenericPortlet.render(GenericPortlet.java:163)
at com.ibm.wps.pe.pc.std.cmpf.impl.PortletFilterChainImpl.render(PortletFilterChainImpl.java:144)
at com.ibm.wps.pe.pc.std.invoker.impl.PortletServlet.dispatch(PortletServlet.java:131)
at com.ibm.wps.pe.pc.std.invoker.impl.PortletServlet.doPost(PortletServlet.java:76)
at javax.servlet.http.HttpServlet.service(HttpServlet.java(Compiled Code))
at com.ibm.wps.pe.pc.std.cache.CacheablePortlet.service(CacheablePortlet.java:256)
at javax.servlet.http.HttpServlet.service(HttpServlet.java(Compiled Code))
at com.ibm.ws.cache.servlet.ServletWrapper.serviceProxied(ServletWrapper.java(Inlined Compiled Code))
at com.ibm.ws.cache.servlet.CacheHook.handleFragment(CacheHook.java(Compiled Code))
at com.ibm.ws.cache.servlet.CacheHook.handleServlet(CacheHook.java(Compiled Code))
at com.ibm.ws.cache.servlet.ServletWrapper.service(ServletWrapper.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._service(StrictLifecycleServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.IdleServletState.service(StrictLifecycleServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.service(StrictLifecycleServlet.java(Inlined Compiled Code))
at com.ibm.ws.webcontainer.servlet.ServletInstance.service(ServletInstance.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.ValidServletReferenceState.dispatch(ValidServletReferenceState.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.ServletInstanceReference.dispatch(ServletInstanceReference.java(Inlined Compiled Code))
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java(Compiled Code))
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java(Compiled Code))
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.include(WebAppRequestDispatcher.java(Compiled Code))
at com.ibm.wps.pe.pc.std.invoker.impl.PortletInvokerImpl.invoke(PortletInvokerImpl.java:204)
at com.ibm.wps.pe.pc.std.invoker.impl.PortletInvokerImpl.invoke(PortletInvokerImpl.java:168)
at com.ibm.wps.pe.pc.std.invoker.impl.PortletInvokerImpl.render(PortletInvokerImpl.java:97)
at com.ibm.wps.pe.pc.std.PortletContainerImpl.renderPortlet(PortletContainerImpl.java:110)
at com.ibm.wps.pe.pc.PortletContainerImpl.doRenderPortlet(PortletContainerImpl.java:545)
at com.ibm.wps.pe.ext.render.AbstractRenderManager.performService(AbstractRenderManager.java:251)
at com.ibm.wps.pe.pc.PortletContainerImpl.renderPortlet(PortletContainerImpl.java:100)
at com.ibm.wps.engine.tags.PortletRenderTag.doStartTag(PortletRenderTag.java:155)
at org.apache.jsp._Control._jspService(_Control.java:1933)
at com.ibm.ws.webcontainer.jsp.runtime.HttpJspBase.service(HttpJspBase.java(Compiled Code))
at javax.servlet.http.HttpServlet.service(HttpServlet.java(Compiled Code))
at com.ibm.ws.cache.servlet.ServletWrapper.serviceProxied(ServletWrapper.java(Inlined Compiled Code))
at com.ibm.ws.cache.servlet.CacheHook.handleFragment(CacheHook.java(Compiled Code))
at com.ibm.ws.cache.servlet.CacheHook.handleServlet(CacheHook.java(Compiled Code))
at com.ibm.ws.cache.servlet.ServletWrapper.service(ServletWrapper.java(Compiled Code))
at com.ibm.ws.webcontainer.jsp.servlet.JspServlet$JspServletWrapper.service(JspServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.jsp.servlet.JspServlet.serviceJspFile(JspServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.jsp.servlet.JspServlet.service(JspServlet.java(Compiled Code))
at javax.servlet.http.HttpServlet.service(HttpServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._service(StrictLifecycleServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.ServicingServletState.service(StrictLifecycleServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.service(StrictLifecycleServlet.java(Inlined Compiled Code))
at com.ibm.ws.webcontainer.servlet.ServletInstance.service(ServletInstance.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.ValidServletReferenceState.dispatch(ValidServletReferenceState.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.ServletInstanceReference.dispatch(ServletInstanceReference.java(Inlined Compiled Code))
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java(Compiled Code))
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java(Compiled Code))
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.include(WebAppRequestDispatcher.java(Compiled Code))
at com.ibm.wps.services.dispatcher.DispatcherServiceImpl.handleRequest(DispatcherServiceImpl.java(Compiled Code))
at com.ibm.wps.services.dispatcher.DispatcherServiceImpl.include(DispatcherServiceImpl.java(Compiled Code))
at com.ibm.wps.services.dispatcher.Dispatcher.include(Dispatcher.java(Inlined Compiled Code))
at com.ibm.wps.engine.templates.skins.Default.render(Default.java(Compiled Code))
at com.ibm.wps.engine.templates.SkinTemplate.render(SkinTemplate.java(Compiled Code))
at com.ibm.wps.composition.elements.Component.render(Component.java(Compiled Code))
at com.ibm.wps.composition.elements.Control.render(Control.java:182)
at com.ibm.wps.composition.Composition.render(Composition.java(Compiled Code))
at com.ibm.wps.model.wrappers.LayoutModelWrapperFactoryImpl$LayoutModelWrapperImpl.render(LayoutModelWrapperFactoryImpl.java(Compiled Code))
at com.ibm.wps.model.ModelUtil$WrappedCompositionModel.render(ModelUtil.java:832)
at org.apache.jsp._UnlayeredContainer_2D_V._jspService(_UnlayeredContainer_2D_V.java:107)
at com.ibm.ws.webcontainer.jsp.runtime.HttpJspBase.service(HttpJspBase.java(Compiled Code))
at javax.servlet.http.HttpServlet.service(HttpServlet.java(Compiled Code))
at com.ibm.ws.cache.servlet.ServletWrapper.serviceProxied(ServletWrapper.java(Inlined Compiled Code))
at com.ibm.ws.cache.servlet.CacheHook.handleFragment(CacheHook.java(Compiled Code))
at com.ibm.ws.cache.servlet.CacheHook.handleServlet(CacheHook.java(Compiled Code))
at com.ibm.ws.cache.servlet.ServletWrapper.service(ServletWrapper.java(Compiled Code))
at com.ibm.ws.webcontainer.jsp.servlet.JspServlet$JspServletWrapper.service(JspServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.jsp.servlet.JspServlet.serviceJspFile(JspServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.jsp.servlet.JspServlet.service(JspServlet.java(Compiled Code))
at javax.servlet.http.HttpServlet.service(HttpServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._service(StrictLifecycleServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.ServicingServletState.service(StrictLifecycleServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.service(StrictLifecycleServlet.java(Inlined Compiled Code))
at com.ibm.ws.webcontainer.servlet.ServletInstance.service(ServletInstance.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.ValidServletReferenceState.dispatch(ValidServletReferenceState.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.ServletInstanceReference.dispatch(ServletInstanceReference.java(Inlined Compiled Code))
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java(Compiled Code))
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java(Compiled Code))
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.include(WebAppRequestDispatcher.java(Compiled Code))
at com.ibm.wps.services.dispatcher.DispatcherServiceImpl.handleRequest(DispatcherServiceImpl.java(Compiled Code))
at com.ibm.wps.services.dispatcher.DispatcherServiceImpl.include(DispatcherServiceImpl.java(Compiled Code))
at com.ibm.wps.services.dispatcher.Dispatcher.include(Dispatcher.java(Inlined Compiled Code))
at com.ibm.wps.engine.templates.skins.Default.render(Default.java(Compiled Code))
at com.ibm.wps.engine.templates.SkinTemplate.render(SkinTemplate.java(Compiled Code))
at com.ibm.wps.composition.elements.Component.render(Component.java(Compiled Code))
at com.ibm.wps.composition.Composition.render(Composition.java(Compiled Code))
at com.ibm.wps.model.wrappers.LayoutModelWrapperFactoryImpl$LayoutModelWrapperImpl.render(LayoutModelWrapperFactoryImpl.java(Compiled Code))
at com.ibm.wps.model.ModelUtil$WrappedCompositionModel.render(ModelUtil.java:832)
at org.apache.jsp._UnlayeredContainer_2D_H._jspService(_UnlayeredContainer_2D_H.java:123)
at com.ibm.ws.webcontainer.jsp.runtime.HttpJspBase.service(HttpJspBase.java(Compiled Code))
at javax.servlet.http.HttpServlet.service(HttpServlet.java(Compiled Code))
at com.ibm.ws.cache.servlet.ServletWrapper.serviceProxied(ServletWrapper.java(Inlined Compiled Code))
at com.ibm.ws.cache.servlet.CacheHook.handleFragment(CacheHook.java(Compiled Code))
at com.ibm.ws.cache.servlet.CacheHook.handleServlet(CacheHook.java(Compiled Code))
at com.ibm.ws.cache.servlet.ServletWrapper.service(ServletWrapper.java(Compiled Code))
at com.ibm.ws.webcontainer.jsp.servlet.JspServlet$JspServletWrapper.service(JspServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.jsp.servlet.JspServlet.serviceJspFile(JspServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.jsp.servlet.JspServlet.service(JspServlet.java(Compiled Code))
at javax.servlet.http.HttpServlet.service(HttpServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._service(StrictLifecycleServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.ServicingServletState.service(StrictLifecycleServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.service(StrictLifecycleServlet.java(Inlined Compiled Code))
at com.ibm.ws.webcontainer.servlet.ServletInstance.service(ServletInstance.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.ValidServletReferenceState.dispatch(ValidServletReferenceState.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.ServletInstanceReference.dispatch(ServletInstanceReference.java(Inlined Compiled Code))
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java(Compiled Code))
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java(Compiled Code))
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.include(WebAppRequestDispatcher.java(Compiled Code))
at com.ibm.wps.services.dispatcher.DispatcherServiceImpl.handleRequest(DispatcherServiceImpl.java(Compiled Code))
at com.ibm.wps.services.dispatcher.DispatcherServiceImpl.include(DispatcherServiceImpl.java(Compiled Code))
at com.ibm.wps.services.dispatcher.Dispatcher.include(Dispatcher.java(Inlined Compiled Code))
at com.ibm.wps.engine.templates.skins.Default.render(Default.java(Compiled Code))
at com.ibm.wps.engine.templates.SkinTemplate.render(SkinTemplate.java(Compiled Code))
at com.ibm.wps.composition.elements.Component.render(Component.java(Compiled Code))
at com.ibm.wps.composition.Composition.render(Composition.java(Compiled Code))
at com.ibm.wps.model.wrappers.LayoutModelWrapperFactoryImpl$LayoutModelWrapperImpl.render(LayoutModelWrapperFactoryImpl.java(Compiled Code))
at com.ibm.wps.engine.tags2.PageRenderTag.doStartTag(PageRenderTag.java:397)
at org.apache.jsp._Home._jspService(_Home.java:135)
at com.ibm.ws.webcontainer.jsp.runtime.HttpJspBase.service(HttpJspBase.java(Compiled Code))
at javax.servlet.http.HttpServlet.service(HttpServlet.java(Compiled Code))
at com.ibm.ws.cache.servlet.ServletWrapper.serviceProxied(ServletWrapper.java(Inlined Compiled Code))
at com.ibm.ws.cache.servlet.CacheHook.handleFragment(CacheHook.java(Compiled Code))
at com.ibm.ws.cache.servlet.CacheHook.handleServlet(CacheHook.java(Compiled Code))
at com.ibm.ws.cache.servlet.ServletWrapper.service(ServletWrapper.java(Compiled Code))
at com.ibm.ws.webcontainer.jsp.servlet.JspServlet$JspServletWrapper.service(JspServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.jsp.servlet.JspServlet.serviceJspFile(JspServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.jsp.servlet.JspServlet.service(JspServlet.java(Compiled Code))
at javax.servlet.http.HttpServlet.service(HttpServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._service(StrictLifecycleServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.ServicingServletState.service(StrictLifecycleServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.service(StrictLifecycleServlet.java(Inlined Compiled Code))
at com.ibm.ws.webcontainer.servlet.ServletInstance.service(ServletInstance.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.ValidServletReferenceState.dispatch(ValidServletReferenceState.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.ServletInstanceReference.dispatch(ServletInstanceReference.java(Inlined Compiled Code))
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java(Compiled Code))
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java(Compiled Code))
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.include(WebAppRequestDispatcher.java(Compiled Code))
at com.ibm.wps.services.dispatcher.DispatcherServiceImpl.handleRequest(DispatcherServiceImpl.java(Compiled Code))
at com.ibm.wps.services.dispatcher.DispatcherServiceImpl.include(DispatcherServiceImpl.java(Compiled Code))
at com.ibm.wps.services.dispatcher.Dispatcher.include(Dispatcher.java(Compiled Code))
at com.ibm.wps.engine.templates.screens.Default.render(Default.java:91)
at com.ibm.wps.engine.templates.ScreenTemplate.render(ScreenTemplate.java:61)
at com.ibm.wps.engine.tags2.ScreenRenderTag.doStartTag(ScreenRenderTag.java:89)
at org.apache.jsp._Default._jspService(_Default.java:8805)
at com.ibm.ws.webcontainer.jsp.runtime.HttpJspBase.service(HttpJspBase.java(Compiled Code))
at javax.servlet.http.HttpServlet.service(HttpServlet.java(Compiled Code))
at com.ibm.ws.cache.servlet.ServletWrapper.serviceProxied(ServletWrapper.java(Inlined Compiled Code))
at com.ibm.ws.cache.servlet.CacheHook.handleFragment(CacheHook.java(Compiled Code))
at com.ibm.ws.cache.servlet.CacheHook.handleServlet(CacheHook.java(Compiled Code))
at com.ibm.ws.cache.servlet.ServletWrapper.service(ServletWrapper.java(Compiled Code))
at com.ibm.ws.webcontainer.jsp.servlet.JspServlet$JspServletWrapper.service(JspServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.jsp.servlet.JspServlet.serviceJspFile(JspServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.jsp.servlet.JspServlet.service(JspServlet.java(Compiled Code))
at javax.servlet.http.HttpServlet.service(HttpServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._service(StrictLifecycleServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.IdleServletState.service(StrictLifecycleServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.service(StrictLifecycleServlet.java(Inlined Compiled Code))
at com.ibm.ws.webcontainer.servlet.ServletInstance.service(ServletInstance.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.ValidServletReferenceState.dispatch(ValidServletReferenceState.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.ServletInstanceReference.dispatch(ServletInstanceReference.java(Inlined Compiled Code))
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java(Compiled Code))
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java(Compiled Code))
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.include(WebAppRequestDispatcher.java(Compiled Code))
at com.ibm.wps.services.dispatcher.DispatcherServiceImpl.handleRequest(DispatcherServiceImpl.java(Compiled Code))
at com.ibm.wps.services.dispatcher.DispatcherServiceImpl.include(DispatcherServiceImpl.java(Compiled Code))
at com.ibm.wps.services.dispatcher.Dispatcher.include(Dispatcher.java(Compiled Code))
at com.ibm.wps.engine.templates.themes.Default.render(Default.java:103)
at com.ibm.wps.engine.templates.ThemeTemplate.render(ThemeTemplate.java:67)
at com.ibm.wps.engine.phases.WPRenderPhase.processRendering(WPRenderPhase.java:312)
at com.ibm.wps.engine.phases.WPRenderPhase.execute(WPRenderPhase.java:135)
at com.ibm.wps.state.phases.AbstractRenderPhase.next(AbstractRenderPhase.java:106)
at com.ibm.wps.engine.phases.WPAbstractRenderPhase.next(WPAbstractRenderPhase.java:93)
at com.ibm.wps.engine.Servlet.callPortal(Servlet.java:713)

no one can help?

What is the use of Marker Interfaces?

What is the use of marker interfaces?
As it is not having any methods or fileds what is the benefit I will get by implementing those interfaces?
Servlet implements SingleThread
What it will do behind the scenes exactly as singleThread model is marker interface

The use of marker interfaces is to act as markers (shock horror)
It is quite a common way to tell a program what a class can/can't do: Cloneable, Serializable etc etc
This doesn't change the functionality of the class itself, but is more an indication as to what can be done with this class.
In this case the servlet container can then tell whether or not it implements the interface, and can treat it accordingly. Implementing this interface tells the container you want it to run this servlet in singleThreaded mode.
Thats all there is to it.
It would be along the lines of
Servlet servlet = loadServlet("...")
if (servlet instanceof SingleThreadModel){
// Single threaded servlet - start new process for it
else {
// regular servlet - reuse existing object.

Named query, primary keys must not contain null

We have an question on the named query. Here is the scenario:
Class JoinClassC (id, name, desc, comment) is mapped to two tables Join_Table_A (id, name, description) and Join_Table_B (id, name, comments); Join_Table_A is the primary table; two tables are associated via primary key.
Defined a named query (findByName, ReadAllQuery/SQL) for JoinClassC descriptor. The sql is:
SELECT a.ID,a.NAME,a.DESCRIPTION,b.COMMENTS FROM JOIN_TABLE_A a, JOIN_TABLE_B b WHERE a.NAME=#name AND a.ID=b.ID AND a.NAME=b.NAME
Getting QueryException while executing the query. Here is the trace:
[3/2/05 13:50:24:795 EST] f8b62aa SystemOut O 2005.03.02 01:50:24.795--ServerSession(738697921)--Thread[Servlet.Engine.Transports : 4,5,main]--Connection(1095574161)--SELECT a.ID,a.NAME,a.DESCRIPTION,b.COMMENTS FROM JOIN_TABLE_A a, JOIN_TABLE_B b WHERE a.NAME='persistence' AND a.ID=b.ID AND a.NAME=b.NAME
2005.03.02 01:50:24.835--ClientSession(1127670417)--Thread[Servlet.Engine.Transports : 4,5,main]--Exception [TOPLINK-6044] (OracleAS TopLink - 10g (9.0.4.4) (Build 040627)): oracle.toplink.exceptions.QueryException
Exception Description: The primary key read from the row [DatabaseRow(
     USER04.JOIN_TABLE_B.ID => 2
     USER04.JOIN_TABLE_A.NAME => persistence
     USER04.JOIN_TABLE_A.DESCRIPTION => FJF Persistence Fram
     USER04.JOIN_TABLE_B.COMMENTS => The Persistence Fram)] during the execution of the query was detected to be null. Primary keys must not contain null.
Query: ReadAllQuery(com.ford.it.persistence.unittest.dom.JoinClassC)Local Exception Stack:
Exception [TOPLINK-6044] (OracleAS TopLink - 10g (9.0.4.4) (Build 040627)): oracle.toplink.exceptions.QueryException
Exception Description: The primary key read from the row [DatabaseRow(
     USER04.JOIN_TABLE_B.ID => 2
     USER04.JOIN_TABLE_A.NAME => persistence
     USER04.JOIN_TABLE_A.DESCRIPTION => FJF Persistence Fram
     USER04.JOIN_TABLE_B.COMMENTS => The Persistence Fram)] during the execution of the query was detected to be null. Primary keys must not contain null.
Query: ReadAllQuery(com.ford.it.persistence.unittest.dom.JoinClassC)
     at oracle.toplink.exceptions.QueryException.nullPrimaryKeyInBuildingObject(QueryException.java:542)
Adding b.ID to the sql select will solve the problem.
Question: does the primary key must be present in the sql select to run this kind of query? Any way to work around the restriction?
Your help would be greatly appreciated.
Haiwei

The problem is that you need to select both primary keys for the multiple table descriptor.
i.e.
SELECT a.ID,a.NAME,a.DESCRIPTION,b.ID, b.COMMENTS FROM JOIN_TABLE_A a, JOIN_TABLE_B b WHERE a.NAME=#name AND a.ID=b.ID AND a.NAME=b.NAME
Your SQL needs to return the same data that TopLink would have selected, which includes the primary key for both tables. TopLink expects both a.ID and b.ID fields in the select, because your only select one and the field names are the same TopLink thought the ID field was for b.ID not a.ID, if you select both it will be ok.

Threaded servlet

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