Implementation of Runnable in a Bean class
Hi All,
Can a Session bean class implement Runnable? Can the business methods of Component Interface be run on different threads?
If yes, then how do I start the thread when I know that it is actually the EJBObject that is inturn calling the method on the bean instance?
Please answer my query.
You might want to consider using the EJB Timer Service if you have time-based or asynchronous tasks you need to perform. See Chapter 22 of the Java EE 5 tutorial :
http://java.sun.com/javaee/5/docs/tutorial/doc/
--ken
Similar Messages
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"Bean Class Must Implement X" message, but bean class does implement X
When trying to deploy an .ear file on WebLogic 9.0 that contains an MDB EJB, I get a message like the following:
In EJB ITS-MDB(Application: ITSNO,
EJBComponent: ITSMDB.jar), the bean class must implement
its.common.TelnetMessageListener. '
The ITS-MDB EJB class (its.mdb.TelnetMessageListenerImpl) referenced in ejb-jar.xml DOES implement its.common.TelnetMessageListener, and both .class files exist in the same .jar file.
(The TelnetMessageListener interface extends javax.ejb.MessageDrivenBean.)
This .ear deploys without a problem on Oracle's OC4J and IBM's Websphere, so it appears that there is some Weblogic peculiarity (a bug, a different spec interpretation, etc.) causing the problem.
This problem is happening on Weblogic 9.0 using Java 1.5.0_03 on Windows XP.
Any ideas why this might be happening?Thanks for the suggestion, Rob.
I checked to ensure that no out-dated TelnetMessageListenerImpl and TelnetMessageListener were being used. It looks like I am not using older versions.
I first checked the classpath specified by the log, and did not see anywhere in there that would contain either of these classes.
To be sure, I then decided to remove each class from the jar file and attempt to deploy it. If it succeeded, that would mean there was some other version of that file on the classpath.
I first removed TelnetMessageListenerImpl from ITSMDB.jar, and then tried deploying it. As expected, I received the following message:
Unable to deploy EJB: C:\bea\user_projects\domains\domain_good\.\servers\AdminServer\tmp\_WL_user\ITSNOMinus\fvdi9g\ITSMDB.jar from ITSMDB.jar:
Unable to load a class specified in your ejb-jar.xml: its.mdb.TelnetMessageListenerImpl
at weblogic.ejb20.deployer.EJBModule.prepare(EJBModule.java:371)
at weblogic.application.internal.flow.ModuleListenerInvoker.prepare(ModuleListenerInvoker.java:90)
I then replaced TelnetMessageListenerImpl and attempted to remove TelnetMessageLister. I got a slightly different (but essentially the same) error:
java.lang.NoClassDefFoundError: oracle/wireless/its/common/TelnetMessageListener
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
at weblogic.utils.classloaders.GenericClassLoader.defineClass(GenericClassLoader.java:302)
at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:255)
at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClassLoader.java:223)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClassLoader.java:158)
at weblogic.ejb20.deployer.EJBModule.setupEJBToImplClassDependencies(EJBModule.java:1396)
Here is the exception stack I get will the original ITSNO deployment:
####<Sep 20, 2005 11:20:57 AM PDT> <Info> <Deployer> <jrozier-pc> <AdminServer> <[STANDBY] ExecuteThread: '5' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1127240457892> <BEA-149059> <Module ITSMDB.jar of application ITSNO is transitioning from STATE_NEW to STATE_PREPARED on server AdminServer.>
####<Sep 20, 2005 11:20:58 AM PDT> <Info> <EJB> <jrozier-pc> <AdminServer> <[STANDBY] ExecuteThread: '5' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1127240458002> <BEA-010008> <EJB Deploying file: ITSMDB.jar>
####<Sep 20, 2005 11:20:58 AM PDT> <Info> <Deployer> <jrozier-pc> <AdminServer> <[STANDBY] ExecuteThread: '5' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1127240458080> <BEA-149061> <Module ITSMDB.jar of application ITSNO failed to transition from STATE_NEW to STATE_PREPARED on server AdminServer.>
####<Sep 20, 2005 11:20:58 AM PDT> <Info> <Deployer> <jrozier-pc> <AdminServer> <[STANDBY] ExecuteThread: '5' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1127240458080> <BEA-149059> <Module ITSRA.rar of application ITSNO is transitioning from STATE_PREPARED to STATE_NEW on server AdminServer.>
####<Sep 20, 2005 11:20:58 AM PDT> <Info> <Deployer> <jrozier-pc> <AdminServer> <[STANDBY] ExecuteThread: '5' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1127240458111> <BEA-149060> <Module ITSRA.rar of application ITSNO successfully transitioned from STATE_PREPARED to STATE_NEW on server AdminServer.>
####<Sep 20, 2005 11:20:58 AM PDT> <Error> <Deployer> <jrozier-pc> <AdminServer> <[STANDBY] ExecuteThread: '5' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1127240458158> <BEA-149265> <Failure occured in the execution of deployment request with ID '1127240456080' for task '0'. Error is: 'weblogic.application.ModuleException: Exception preparing module: EJBModule(ITSMDB.jar)
Unable to deploy EJB: C:\bea\user_projects\domains\domain_good\.\servers\AdminServer\tmp\_WL_user\ITSNO\x5gd0k\ITSMDB.jar from ITSMDB.jar:
In EJB ITS-MDB(Application: ITSNO, EJBComponent: ITSMDB.jar), the bean class must implement its.common.TelnetMessageListener.
weblogic.application.ModuleException: Exception preparing module: EJBModule(ITSMDB.jar)
Unable to deploy EJB: C:\bea\user_projects\domains\domain_good\.\servers\AdminServer\tmp\_WL_user\ITSNO\x5gd0k\ITSMDB.jar from ITSMDB.jar:
In EJB ITS-MDB(Application: ITSNO, EJBComponent: ITSMDB.jar), the bean class must implement its.common.TelnetMessageListener.
at weblogic.ejb20.deployer.EJBModule.prepare(EJBModule.java:371)
at weblogic.application.internal.flow.ModuleListenerInvoker.prepare(ModuleListenerInvoker.java:90)
at weblogic.application.internal.flow.DeploymentCallbackFlow$1.next(DeploymentCallbackFlow.java:318)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:26)
at weblogic.application.internal.flow.DeploymentCallbackFlow.prepare(DeploymentCallbackFlow.java:53)
at weblogic.application.internal.flow.DeploymentCallbackFlow.prepare(DeploymentCallbackFlow.java:43)
at weblogic.application.internal.BaseDeployment$1.next(BaseDeployment.java:615)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:26)
at weblogic.application.internal.BaseDeployment.prepare(BaseDeployment.java:236)
at weblogic.application.internal.DeploymentStateChecker.prepare(DeploymentStateChecker.java:147)
at weblogic.deploy.internal.targetserver.AppContainerInvoker.prepare(AppContainerInvoker.java:61)
at weblogic.deploy.internal.targetserver.operations.ActivateOperation.createAndPrepareContainer(ActivateOperation.java:191)
at weblogic.deploy.internal.targetserver.operations.ActivateOperation.doPrepare(ActivateOperation.java:84)
at weblogic.deploy.internal.targetserver.operations.AbstractOperation.prepare(AbstractOperation.java:197)
at weblogic.deploy.internal.targetserver.DeploymentManager.handleDeploymentPrepare(DeploymentManager.java:724)
at weblogic.deploy.internal.targetserver.DeploymentManager.prepareDeploymentList(DeploymentManager.java:1137)
at weblogic.deploy.internal.targetserver.DeploymentManager.handlePrepare(DeploymentManager.java:224)
at weblogic.deploy.internal.targetserver.DeploymentServiceDispatcher.prepare(DeploymentServiceDispatcher.java:109)
at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.doPrepareCallback(DeploymentReceiverCallbackDeliverer.java:166)
at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.access$100(DeploymentReceiverCallbackDeliverer.java:12)
at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer$2.run(DeploymentReceiverCallbackDeliverer.java:54)
at weblogic.work.ServerWorkManagerImpl$WorkAdapterImpl.run(ServerWorkManagerImpl.java:518)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:207)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:179)
In EJB ITS-MDB(Application: ITSNO, EJBComponent: ITSMDB.jar), the bean class must implement its.common.TelnetMessageListener.
at weblogic.ejb20.deployer.MessageDrivenBeanInfoImpl.initializeOnMessageMethodInfo(MessageDrivenBeanInfoImpl.java:593)
at weblogic.ejb20.deployer.MessageDrivenBeanInfoImpl.<init>(MessageDrivenBeanInfoImpl.java:346)
at weblogic.ejb20.deployer.BeanInfoImpl.createBeanInfoImpl(BeanInfoImpl.java:551)
at weblogic.ejb20.deployer.MBeanDeploymentInfoImpl.initializeBeanInfos(MBeanDeploymentInfoImpl.java:597)
at weblogic.ejb20.deployer.MBeanDeploymentInfoImpl.<init>(MBeanDeploymentInfoImpl.java:221)
at weblogic.ejb20.deployer.EJBDeployer.prepare(EJBDeployer.java:1165)
at weblogic.ejb20.deployer.EJBModule.prepare(EJBModule.java:344)
at weblogic.application.internal.flow.ModuleListenerInvoker.prepare(ModuleListenerInvoker.java:90)
at weblogic.application.internal.flow.DeploymentCallbackFlow$1.next(DeploymentCallbackFlow.java:318)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:26)
at weblogic.application.internal.flow.DeploymentCallbackFlow.prepare(DeploymentCallbackFlow.java:53)
at weblogic.application.internal.flow.DeploymentCallbackFlow.prepare(DeploymentCallbackFlow.java:43)
at weblogic.application.internal.BaseDeployment$1.next(BaseDeployment.java:615)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:26)
at weblogic.application.internal.BaseDeployment.prepare(BaseDeployment.java:236)
at weblogic.application.internal.DeploymentStateChecker.prepare(DeploymentStateChecker.java:147)
at weblogic.deploy.internal.targetserver.AppContainerInvoker.prepare(AppContainerInvoker.java:61)
at weblogic.deploy.internal.targetserver.operations.ActivateOperation.createAndPrepareContainer(ActivateOperation.java:191)
at weblogic.deploy.internal.targetserver.operations.ActivateOperation.doPrepare(ActivateOperation.java:84)
at weblogic.deploy.internal.targetserver.operations.AbstractOperation.prepare(AbstractOperation.java:197)
at weblogic.deploy.internal.targetserver.DeploymentManager.handleDeploymentPrepare(DeploymentManager.java:724)
at weblogic.deploy.internal.targetserver.DeploymentManager.prepareDeploymentList(DeploymentManager.java:1137)
at weblogic.deploy.internal.targetserver.DeploymentManager.handlePrepare(DeploymentManager.java:224)
at weblogic.deploy.internal.targetserver.DeploymentServiceDispatcher.prepare(DeploymentServiceDispatcher.java:109)
at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.doPrepareCallback(DeploymentReceiverCallbackDeliverer.java:166)
at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.access$100(DeploymentReceiverCallbackDeliverer.java:12)
at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer$2.run(DeploymentReceiverCallbackDeliverer.java:54)
at weblogic.work.ServerWorkManagerImpl$WorkAdapterImpl.run(ServerWorkManagerImpl.java:518)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:207)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:179)
>
####<Sep 20, 2005 11:20:58 AM PDT> <Warning> <Deployer> <jrozier-pc> <AdminServer> <[STANDBY] ExecuteThread: '5' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1127240458252> <BEA-149004> <Failures were detected while initiating distribute task for application 'ITSNO'.>
####<Sep 20, 2005 11:20:58 AM PDT> <Warning> <Deployer> <jrozier-pc> <AdminServer> <[STANDBY] ExecuteThread: '5' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1127240458252> <BEA-149078> <Stack trace for message 149004
There are a few other updates since my first post as well:
(1) I get the same message when I try to deploy just ITSMDB.jar as an application as I do when I try to deploy my ITSNO.ear (which contains both an RA and the MDB).
(2) This same application now also works on JBoss. (I had to add a jboss.xml to tell the MDB about the RA.)
(3) I fixed the ejb-jar.xml container-transaction element to refer to ITS-MDB (with a dash) instead of ITS_MDB (with an underscore). (This fix goes to show that some containers are more forgiving than others--OC4J and Websphere did not complain about it, but JBoss gave an error message and would not deploy until this was fixed.) -
Multiple instances of the same bean class in session?
I�m trying to think of a way to have multiple instances of the same bean class in session scope using JSF. For example, let�s say that I have two <h:dataTable>s on the same page. They both use the backing bean called genericBean. Now, the content for genericBean will be different for each <h:dataTable>. In fact, the data source that backs genericBean is not known until runtime. It could be a database, web service, etc.
What I would like is for when JSF needs access genericBean instead of looking for the value with key �genericBean� in the session map it looks for �genericBean_[some runtime ID]�. I could specify this id in EL on a custom component, as a request parameter or whatever.
I think that I need the bean to be in session scope because the tables are complex and I want them to be editable.
I have some ideas about how I can do this but I was wondering if someone has already solved this problem or if there is a standard way to do this using tools like Shale, etc.
Thanks,
RandyWell, I came up with an interesting solution to this so I thought that I would post it here.
I have a page that looks like this.
<html>
<head>
<title>My Page</title>
</head>
<body>
<f:view>
<f:subview id="component1">
<jsp:include page="component.jsp">
<jsp:param name="id" value="a" />
</jsp:include>
</f:subview>
<hr>
<f:subview id="component2">
<jsp:include page="component.jsp">
<jsp:param name="id" value="b" />
</jsp:include>
</f:subview>
</f:view>
</body>
</html>
And component.jsp looke like this.
<f:verbatim>
<p>
<h1>Component
</f:verbatim>
<h:outputText value=" #{param.id}" />
<f:verbatim>
</h1>
</p>
</f:verbatim>
<h:form>
<h:outputText value="#{component.id}" />
<h:outputText value="#{component.value}" />
<h:commandButton value="increment" action="#{component.increment}" />
<h:commandButton value="decrement" action="#{component.decrement}" />
<f:verbatim>
<input type="hidden" name="id"
value="</f:verbatim><h:outputText value="#{param.id}"/><f:verbatim>" />
</f:verbatim>
</h:form>
The idea is that I want component.jsp to be initialized differently based on the id param. The component managed bean is configured to be in session scope but I want the component instance for id a and id b to be different instances in session scope. Therefore, I added a custom variable resolver to handle this.
public Object resolveVariable(FacesContext context, String name) {
// This id will be different for the different subviews.
HttpServletRequest request = (HttpServletRequest) context.getExternalContext() .getRequest();
String id = request.getParameter("id");
// If there is an id in the request then check if this is a bean that can have multiple
// instances in session scope.
if ((id != null) && (id.length() > 0)) {
ExternalContext ec = context.getExternalContext();
// Build the new name for the key of this bean
String newName = name + "_" + id;
Object value = null;
// See if the bean instance already esists.
if ((null == (value = ec.getRequestMap().get(newName))) &&
(null == (value = ec.getSessionMap().get(newName))) &&
(null == (value = ec.getApplicationMap().get(newName)))) {
// We could not find the bean instance in scope so create the bean
// using the standard variable resolver.
value = original.resolveVariable(context, name);
// Now check if the bean implements that page component interface. If it is
// a page component then we want to rename the key to access this bean so
// that the instance is only used when the id is provided in the request.
// For example, if there are two components (a and b) we will have in session scope
// component_a and component_b. The will each point to a unique instance of the
// Component bean class.
if (value instanceof PageComponent) {
// Try to get the value again
if (null != (value = ec.getRequestMap().get(name))) {
// Initialize the bean using the id
((PageComponent) value).initInstance(id);
ec.getRequestMap().remove(name);
ec.getRequestMap().put(newName, value);
} else if (null != (value = ec.getSessionMap().get(name))) {
((PageComponent) value).initInstance(id);
ec.getSessionMap().remove(name);
ec.getSessionMap().put(newName, value);
} else if (null != (value = ec.getApplicationMap().get(name))) {
((PageComponent) value).initInstance(id);
ec.getApplicationMap().remove(name);
ec.getApplicationMap().put(newName, value);
return value;
return original.resolveVariable(context, name);
} -
Hi here's my bean
import java.util.*;
public class leaveChange extends Object implements java.io.Serializable
String Name;
String Grade;
String Pattern;
int numDays;
Date startDate;
Date endDate;
Now to use this bean in my JSP page what do I do ?
I tried
<%@ page import="leaveChange"%>
but got following error
[javac] C:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\Devannualleave\newDev\advancedOptions_jsp.java:8: '.' expected
[javac] import leaveChange;
[javac] ^
[javac] 1 error
Thanks in advanceUpdate
changed Bean class to
package test;
import java.util.*;
public class leaveChange extends Object implements java.io.Serializable
String Name;
String Grade;
String Pattern;
int numDays;
Date startDate;
Date endDate;
JSP File
<%@ page import="test.leaveChange" %>
and have in my WEB-INF/classes/test
my Bean Class
but get the following error
[javac] C:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\Devannualleave\newDev\advancedOptions_jsp.java:8: package test does not exist
[javac] import test.leaveChange;
[javac] ^
[javac] 1 error
Any help ? -
How to directly call business object class from backing bean class
I woul like to call business object class directly from the backing bean class and implement methods in BO. If possible can anyone give an example code.
Thanks in advanceWhich problems are you occurring then? I really don't see problems. You're just free to access and invoke them.
-
Hi there,
I'm learning using JPA by writing a web application example that check username and password. I use Sun Application Server 9.1 and Myeclipse to build and deloy.
I've got Runtime Exception:
Unknown entity bean class: class vn.kbnn.dtkb.system.dto.UserDTO, please verify that this class has been marked with the @Entity annotation.
Please help me because this error message is not help, my class have @Entity annotation already. Not redeploy bug also.
Here is my code:
package vn.kbnn.framework.controller;
// ... imports
public abstract class XApplicationManager implements ServletContextListener {
bq. protected static EntityManagerFactory entityManagerFactory; \\ protected static ThreadLocal<EntityManager> threadLocal; \\ protected static ServletContext servletContext; \\ protected static Logger logger;
//... contructors, setters, getters
package vn.kbnn.dtkb.controller;
//... imports
public class ApplicationManager extends XApplicationManager {
bq. public ApplicationManager() {bq. super(); \\ ApplicationManager.entityManagerFactory = Persistence.createEntityManagerFactory("vn.kbnn.dtkb.dao.JPA"); \\ ApplicationManager.threadLocal = new ThreadLocal<EntityManager>(); \\ ApplicationManager.logger = Logger.getLogger("vn.kbnn.dtkb.dao.Logger"); \\ logger.setLevel(Level.ALL);
bq. public void contextInitialized(ServletContextEvent ce) {bq. ApplicationManager.servletContext = ce.getServletContext();
bq. public void contextDestroyed(ServletContextEvent ce) {}
package vn.kbnn.framework.dao;
//... imports
public abstract class XDAO {
bq. protected EntityManager em;
bq. public XDAO(EntityManagerFactory emf, ThreadLocal<EntityManager> threadLocal){bq. this.em = getEntityManager(_emf, _threadLocal);
private EntityManager getEntityManager(EntityManagerFactory emf, ThreadLocal<EntityManager> threadLocal) {
bq. EntityManager manager = _threadLocal.get(); \\ if (manager == null || !manager.isOpen()) {bq. manager = _emf.createEntityManager(); \\ _threadLocal.set(manager);
return manager;
package vn.kbnn.framework.system.dao;
//... imports
public abstract class XUserDAO extends XDAO {
bq. public XUserDAO(EntityManagerFactory emf, ThreadLocal<EntityManager> threadLocal) {bq. super(_emf, _threadLocal);
package vn.kbnn.dtkb.system.dao;
//... imports
public class UserDAO extends XUserDAO {
bq. public UserDAO(EntityManagerFactory emf, ThreadLocal<EntityManager> threadLocal) {bq. super(_emf, _threadLocal);
public UserDTO findByPk(String _pk) throws RuntimeException {
bq. try {bq. UserDTO instance = em.find(UserDTO.class, _pk);
bq. return instance;
} catch (RuntimeException re) {
bq. throw re;
package vn.kbnn.framework.facade;
public abstract class XFacade {
package vn.kbnn.framework.system.facade;
//... imports
bq. public abstract class XLoginFacade extends XFacade { \\ public abstract XUserDTO login(String _id, String _password) throws RuntimeException, XProfessionalException;
package vn.kbnn.dtkb.login.facade;
//... imports
public class LoginFacade extends XLoginFacade {
bq. public UserDTO login(String id, String password) throws RuntimeException, XProfessionalException{bq. UserDTO userDTO = new UserDTO(); \\ UserDAO userDAO = new UserDAO(ApplicationManager.getEntityManagerFactory(), ApplicationManager.getThreadLocal()); \\ try {bq. userDTO = userDAO.findByPk(_id);
bq. if (userDTO.getPassword() == _password) {
bq. bq. return userDTO;
bq. } else {
bq. bq. XProfessionalException xProfessionalException = new XProfessionalException("Id and password are not matched.");
bq. throw xProfessionalException;
bq. bq. }
bq. } catch (RuntimeException re){bq. throw re;
package vn.kbnn.framework.dto;
//... imports
@SuppressWarnings("serial")
@MappedSuperclass
public abstract class XDTO implements java.io.Serializable {
bq. @Id @Column(name="pk", unique=true, nullable=false, insertable=true, updatable=false, length=8) \\ private String pk; \\ @Column(name="sid", unique=true, nullable=false, insertable=true, updatable=false, length=8) \\ private String sid;
//... constructors, setters, getters
package vn.kbnn.framework.system.dto;
//...imports
bq. @SuppressWarnings("serial") \\ @MappedSuperclass \\ public abstract class XUserDTO extends XDTO { \\ @Column(name="password", unique=false, nullable=false, insertable=true, updatable=true, length=8) \\ private String password;
//... contructors, setters, getters
package vn.kbnn.dtkb.system.dto;
*//... imports*
*@SuppressWarnings("serial")*
*@Entity*
*@Table(name = "t_User", schema = "DTKB")*
*public class UserDTO extends XUserDTO {*
bq. *public UserDTO() {*
bq. bq. super();
bq. * }*
persistence.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" version="1.0">
bq. <persistence-unit name="vn.kbnn.dtkb.dao.JPA" transaction-type="JTA">bq. <jta-data-source>jdbc/dtkb</jta-data-source>
</persistence-unit>
</persistence>I've got the same error for a long time and I still can't fix it, did you?
-
Printing directly from the bean class
i am using a 3 tier layer to implement an event calendar
i have a calendar.jsp that sends form data to eventday.jsp, which extracts the form data and calls mtds from eventBean.java that connects to db. my print statements are in the bean class. my prob is that the required information are not printed.
i have debugged calendar.jsp and eventday.jsp and am quite sure that both are ok. i have placed a simple print statement in the bean class n it does not get printed.
can i know if it's true we can't print directly from the bean class?
should i return the values to be printed in dayevent.jsp instead?i see, then will it be okay if i store the value retrieved from the bean in a vector n retrieve the vector content in the jsp page? but i remember my tutor sayin that it's poor programing to expose the data structure to other classes or pages? wat other mtd can i use then? thks!
-
Using a backing bean in JDeveloper to assign bean class variables
I am using JDeveloper 10 to make a jsp page that is a form full of inputs and buttons. JDeveloper then creates the setters and getters for you for the ids of the various inputs and buttons. I also have used JDeveloper to create a backing bean.
The idea of this is to have the backing bean read in parameter(s) from an http source/link(when the form is loaded or instantiated) and assign those parameter(s) to one of the bean class local variables.
The reason i want to do this is, is that when the form is loaded the first thing it will do is open up an available database(in the bean class constructor), then in the constructor call a function to do a database query that will return a result set that will then be used to fill up the form.
That variable that is assigned by the backing bean will be the value of a unique database identifier for doing the sql query so that is why it is important that i get this value as the form loads.
So simply i need to find out from someone how to do this. i am totally new to doing any jsp development or using managed beans and i have gotten far enough to launch the form, retrieve and write to the database using sql queries and all the rest.
I just dont know enough about managed beans to make a decision on things like making the bean have a session scope. do i need request scope? if i change to request scope how do i make sure the database isn't being called every time the page changes or is refreshed?(when i had it as request scope the constructor was being called every time the page was reloaded and that isnt effecient at all, especially with multiple users). can you define more than one managed bean in one faces config file? do i have to manually change something in the jsp file to make sure things run smoothly?
Just maybe things are easier than i see them to be and my only problem is that i just dont understand what i am doing. here is what my backing bean looks like now with just basic session scope.
An example of course would be something like: http://host:port/context-root/faces/register.jsp?12345 - where 12345 would be the value that i would like to assign to a local variable in my bean class that can then be used for filtering out information via a query then filling up the form, all this happening at instantiation.
<?xml version="1.0" encoding="windows-1252"?>
<!DOCTYPE faces-config PUBLIC
"-//Sun Microsystems, Inc.//DTD JavaServer Faces Config 1.1//EN"
"http://java.sun.com/dtd/web-facesconfig_1_1.dtd">
<faces-config xmlns="http://java.sun.com/JSF/Configuration">
<managed-bean>
<managed-bean-name>beanpackage</managed-bean-name>
<managed-bean-class>beanpackage.beanclass</managed-bean-class>
<managed-bean-scope>session</managed-bean-scope>
<!--oracle-jdev-comment:managed-bean-jsp-link:1register.jsp-->
</managed-bean>
</faces-config>
This is what i have now, i've tried tons of stuff on the web like assigned value parameters but just am stuck on exactly what to do as nothing has seemed to work. Any help would be appreciated. Thanks in advance!Hi,
don't think you will get a readily programmed solution to this (though I wish you luck). Here's how I would approach the managed bean issue
- One managed bean that you configure from a java.util.HashMap. This bean should be in requestScope (should be okay here). Say the bean is called "formFields", then adding data to it can be done with the following EL #{formBean['attribute_name']}. You need to add this as the value Expression of the inputText field you create dynamically. The filed will then read and write to the HashMap
- Create a managed bean in session scope to handle the database interaction. Put this into session scope (e.g. "database")
- Create a managed bean that holds the action listener that handles the update, insert and delete actions (e.g. logic handler). This bean has a JSF reference to the root component in the page (or the form layout component to add the fields to)
The "database" bean is referenced from the logic handler managed bean using the #{database} expression, which you resolve using a ValueBinding (ExpressionBinding in JSF 1.2). Or, you configure the bean as a managed property.
The logic managed bean also needs to reference the formFields bean (similar to above) to access the contained filed names and attributes. If the filed attributes match column names in the database then you should be all set
Frank -
Is it possible to put the results from a query in a variable to use in the bean class?
Hello, I'm using JDeveloper 12.1.2.0.0
I would like to keep the result of my queries (the method i created in the AppModule) in a RichTable or other type of variable so i can have the results stored and i don't have to do unnecessary queries after. I don't think the query is the problem but keeping the results.
I've tried to do that by using this:
public String testVFactSales(String conditions) {
PreparedStatement query = getDBTransaction().createPreparedStatement("" + "select * from v_fact_sales " + conditions, 0);
//ResultSet rs;
ResultSet result;
//RichTable result;
//String result = null;
try {
//query.setString(1, conditions);
// query.execute();
query.execute();
result = query.getGeneratedKeys();
query.close();
System.out.println("Result: " + result.toString());
return result.toString();
} catch (SQLException e) {
e.printStackTrace();
return "";
As you can see, i've already tried some solutions but so far i only get errors (cannot convert or null exception, when i try to put the result in a richtable in my bean class)
Any ideas?
This is very important for me, since it would improve the performance of my project a lot.
Regards,
Frederico.Hey Arunkumar,
I came to this conclusion since i'm using binding variables with my where clauses.
I've measured the time and i get really bad time responses.
This is my main table query, where all the others selections will be filter the search in this table:
SELECT VFactSalesNew.N_SALES,
VFactSalesNew.QUANTITY,
VFactSalesNew.PRICE, ,
VFactSalesNew.FK_STORE,
VFactSalesNew.ID_ANO,
VFactSalesNew.QUARTER
FROM V_FACT_SALES_NEW VFactSalesNew
WHERE
((nvl(:var_dimCoin,'0') ='0' OR FK_COIN IN (select * from THE(select cast( in_list(:var_dimCoin) as mytableType ) from dual ) a) )
AND
(nvl(:var_dimProduct,'0') ='0' OR FK_PRODUCT IN (select * from THE(select cast( in_list(:var_dimProduct) as mytableType ) from dual ) a) )
AND
(nvl(:var_dimCustomer,'0') ='0' OR FK_CUSTOMER IN (select * from THE(select cast( in_list(:var_dimCustomer) as mytableType ) from dual ) a) )
AND
(nvl(:var_dimStore,'0') ='0' OR FK_STORE IN (select * from THE(select cast( in_list(:var_dimStore) as mytableType ) from dual ) a) )
AND
(nvl(:var_dimSeller,'0') ='0' OR FK_SELLER IN (select * from THE(select cast( in_list(:var_dimSeller) as mytableType ) from dual ) a) )
AND
(nvl(:var_dimProject,'0') ='0' OR FK_PROJECT IN (select * from THE(select cast( in_list(:var_dimProject) as mytableType ) from dual ) a) )
AND
(nvl(:var_ano, '0') ='0' OR ID_ANO IN (select * from THE(select cast( in_list(:var_ano) as mytableType ) from dual ) a) )
AND
(nvl(:var_treemap,'0') ='0' OR PK_REGION IN (select * from THE(select cast( in_list(:var_treemap) as mytableType ) from dual ) a) ) -
How to set render value in a bean class
HI,
I am new to jsf,in a jsf I put two images using <h:graphicImage> tag now my requirement is when the page is loaded one image has to appear and whenever I click on the first image the first image has to disappear and second image has to appear....I am trying this one but I am unabel to get the solution....can any one please tell me.and also can u tell me where can I get information about creating the bean class and how to create the objects for the components in a bean calss??
Thanks...I think you can start from jsf basics here :
http://jsf.javabeat.net/articles/2007/05/java-server-faces-introduction/ -
How to include Managed bean class in build sciprt for taskflow (Jdev 11.4)
Hi,
I've developed a custom taskflow to be deployed in the webcenter spaces. The taskflow that I developed contains managed beans. I am using oracle provided build script with the sample application, to deploy custom taskflow. After the build, we don't see any .class files (managed bean files) in the generated war file. Once we deploy the taskflow into the space, it is failing may be because the managed bean class files are missing in the <taskflow>.war. Am i missing something? Should we specifically include the .class files in the build script?
Below is the oracle provide build script..
<?xml version="1.0" encoding="US-ASCII" ?>
<!--Ant buildfile generated by Oracle JDeveloper-->
<!--Generated Sep 29, 2009 11:47:41 PM-->
<project name="WebCenterSpacesSharedLibExtension" default="all" basedir="."
xmlns:wls="oracle.webcenter.tools.wls">
<property file="../config.properties"/>
<property file="build.properties"/>
<import file="internal-targets.xml"/>
<taskdef resource="net/sf/antcontrib/antcontrib.properties">
<classpath>
<pathelement location="${jdeveloper.install.home.directory}/modules/net.sf.antcontrib_1.0.0.0_1-0b2/lib/ant-contrib.jar"/>
</classpath>
</taskdef>
<target name="clean-stage"
description="Cleans the output directory and generates the war"
depends="clean, stage"/>
<target name="deploy-shared-lib"
depends="init-wls"
description="Deploy the extending WebCenter shared library">
<echo> ---------------------------- </echo>
<echo> ${wls.userconfig} ${wls.userkey} ${wls.host}:${wls.port} ${oracle.jdeveloper.deploy.dir}/exploded ${wls.webcenter.app.target} ${customer.library.name}</echo>
<exec logerror="true"
executable="${jdeveloper.install.home.directory}/oracle_common/common/bin/${wlst.executable}"
dir="${jdeveloper.install.home.directory}/oracle_common/common/bin">
<!--TODO:ExpDeploy Uncomment line after this and comment the one after that to deploy exploded. -->
<arg line="${extending.spaces.home.dir}/WebCenterSpacesSharedLibExtension/extspaces.py ${wls.userconfig} ${wls.userkey} ${wls.host}:${wls.port} ${oracle.jdeveloper.deploy.dir}/exploded/${customer.library.name}.war ${wls.webcenter.app.target} ${customer.library.name}"/>
<!--TODO:ExpDeploy Uncomment line below and comment line above to have non-exploded deploy -->
<!--arg line="${extending.spaces.home.dir}/WebCenterSpacesSharedLibExtension/extspaces.py ${wls.userconfig} ${wls.userkey} ${wls.host}:${wls.port} ${oracle.jdeveloper.deploy.dir}/${shared.library.name} ${wls.webcenter.app.target} ${customer.library.name}"/-->
</exec>
<echo> ---------------------------- </echo>
<echo> Restarting the app </echo>
<echo> ---------------------------- </echo>
<exec logerror="true"
executable="${jdeveloper.install.home.directory}/oracle_common/common/bin/${wlst.executable}"
dir="${jdeveloper.install.home.directory}/oracle_common/common/bin">
<arg line="${extending.spaces.home.dir}/WebCenterSpacesSharedLibExtension/redepwc.py ${wls.userconfig} ${wls.userkey} ${wls.host}:${wls.port} "/>
</exec>
</target>
</project>
Thanks in advance
NitinHi,
I've developed a custom taskflow to be deployed in the webcenter spaces. The taskflow that I developed contains managed beans. I am using oracle provided build script with the sample application, to deploy custom taskflow. After the build, we don't see any .class files (managed bean files) in the generated war file. Once we deploy the taskflow into the space, it is failing may be because the managed bean class files are missing in the <taskflow>.war. Am i missing something? Should we specifically include the .class files in the build script?
Below is the oracle provide build script..
<?xml version="1.0" encoding="US-ASCII" ?>
<!--Ant buildfile generated by Oracle JDeveloper-->
<!--Generated Sep 29, 2009 11:47:41 PM-->
<project name="WebCenterSpacesSharedLibExtension" default="all" basedir="."
xmlns:wls="oracle.webcenter.tools.wls">
<property file="../config.properties"/>
<property file="build.properties"/>
<import file="internal-targets.xml"/>
<taskdef resource="net/sf/antcontrib/antcontrib.properties">
<classpath>
<pathelement location="${jdeveloper.install.home.directory}/modules/net.sf.antcontrib_1.0.0.0_1-0b2/lib/ant-contrib.jar"/>
</classpath>
</taskdef>
<target name="clean-stage"
description="Cleans the output directory and generates the war"
depends="clean, stage"/>
<target name="deploy-shared-lib"
depends="init-wls"
description="Deploy the extending WebCenter shared library">
<echo> ---------------------------- </echo>
<echo> ${wls.userconfig} ${wls.userkey} ${wls.host}:${wls.port} ${oracle.jdeveloper.deploy.dir}/exploded ${wls.webcenter.app.target} ${customer.library.name}</echo>
<exec logerror="true"
executable="${jdeveloper.install.home.directory}/oracle_common/common/bin/${wlst.executable}"
dir="${jdeveloper.install.home.directory}/oracle_common/common/bin">
<!--TODO:ExpDeploy Uncomment line after this and comment the one after that to deploy exploded. -->
<arg line="${extending.spaces.home.dir}/WebCenterSpacesSharedLibExtension/extspaces.py ${wls.userconfig} ${wls.userkey} ${wls.host}:${wls.port} ${oracle.jdeveloper.deploy.dir}/exploded/${customer.library.name}.war ${wls.webcenter.app.target} ${customer.library.name}"/>
<!--TODO:ExpDeploy Uncomment line below and comment line above to have non-exploded deploy -->
<!--arg line="${extending.spaces.home.dir}/WebCenterSpacesSharedLibExtension/extspaces.py ${wls.userconfig} ${wls.userkey} ${wls.host}:${wls.port} ${oracle.jdeveloper.deploy.dir}/${shared.library.name} ${wls.webcenter.app.target} ${customer.library.name}"/-->
</exec>
<echo> ---------------------------- </echo>
<echo> Restarting the app </echo>
<echo> ---------------------------- </echo>
<exec logerror="true"
executable="${jdeveloper.install.home.directory}/oracle_common/common/bin/${wlst.executable}"
dir="${jdeveloper.install.home.directory}/oracle_common/common/bin">
<arg line="${extending.spaces.home.dir}/WebCenterSpacesSharedLibExtension/redepwc.py ${wls.userconfig} ${wls.userkey} ${wls.host}:${wls.port} "/>
</exec>
</target>
</project>
Thanks in advance
Nitin -
Hi,
My question is how to call an RFC from a bean Class (stateless Session Bean). I have followed a link and wrote a following class :
public class Bapi1
public static void main(String args[])throws ApplicationFaultException, SystemFaultException
String aMonth[] = null;
String aMonthVal[] = null;
JCO.Client jcoclient = null;
Yfunc001_Output output = null;
try {
jcoclient = JCO.createClient("Client","Username","Password","Lang","SAP Application System"," SAP System Number");
try {
jcoclient.connect();
System.out.println(""+ jcoclient.getASHost()+ jcoclient.getClient()+ jcoclient.getLanguage()+ jcoclient.getSystemNumber()jcoclient.getUser()jcoclient.isValid());
} catch (RuntimeException e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
} catch (Exception e) {
// TODO Auto-generated catch block
System.out.println(e.getLocalizedMessage());
e.printStackTrace();
Yfunc001_Input input = new Yfunc001_Input();
Graph_PortType mytype = new Graph_PortType();
mytype.messageSpecifier.setJcoClient(jcoclient);
try {
output = mytype.yfunc001(input);
} catch (SystemFaultException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (ApplicationFaultException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
jcoclient.disconnect();
YstructType_List list = output.get_as_listItab();
int listsize = list.size();
for (int i = 0; i < listsize; i++) {
YstructType elem = list.getYstructType(i);
aMonth<i> = elem.getMth();
aMonthVal<i> = elem.getMval();
When I try to Execute this class I get the following Exception
java.lang.NoClassDefFoundError
* at com.sap.mw.jco.MiddlewareJRfc$Client.connect(MiddlewareJRfc.java:882)*
* at com.sap.mw.jco.JCO$Client.connect(JCO.java:3159)*
* at com.ltil.fusionejb.Bapi1.main(Bapi1.java:32)*
Exception in thread "main"
I get an Error on Line : jcoclient.connect();
What All libraries I need to install? Please List down the Steps if possible. Points with be awarded...
Thanks,
Prasanna.Hi,
Add the following jar to the classpath,
<Drive>:/usr/sap/<SID>/JC00/j2ee/cluster/server0/bin/ext/com.sap.mw.jco/jrfc.jar
Hope this helps in solving the issue !
Regards,
Srinivasan T -
Bean class does not store values
hi
I have a jsp page like. i am using Struts.
<body>
<form name="form" action="bluhbluh">
<logic:present name="address">
<logic:iterate id="RequestDVO" name="address">
TABLE align='center' border='1' cellPadding='5' cellSpacing='1' width="60%" style="border-color:#006600">
<TR>
<TD class="label" colspan="1" style="color:#000000">Shipment Quantity</TD>
<TD class="note1" colspan="1" NOWRAP="true"><bean:write name="RequestDVO" property="shipQuantity"/></TD>
<TD class="label" colspan="1" style="color:#000000"></TD>
<TD class="label" colspan="1" style="color:#000000"></TD>
</TR>
<TR>
<TD class="label" colspan="1" style="color:#000000">Address1</TD>
<TD class="note1" colspan="1" NOWRAP="true"><bean:write name="RequestDVO" property="shipCntrAddLine1"/></TD>
<TD class="label" colspan="1" style="color:#000000"> Address2</TD>
<TD class="note1" colspan="1" NOWRAP="true"><bean:write name="RequestDVO" property="shipCntrAddLine2"/></TD>
</TR>
</logic:iterate>
</TABLE><P><P>
</logic:present>
</form>
</BODY>
"logic" used because i am displaying value from bean class using list thats in session scope and it set the value to "address". RequestDVO is my bean class.
if i submit the form it has to store the value again in database. but while inserting it shows that all the fields are null. so please help me how to handle this.
my action class for doing this is
public class NewRequestAction extends Action
private static Log log = LogFactory.getLog(NewRequestAction.class);
public ActionForward execute(
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws Exception {
RequestDVO requestDVO=(RequestDVO) form;
RequestHelper requesthelper=new RequestHelper();
requesthelper.newRequest(requestDVO);
return mapping.findForward("requestsuccess");
i have imported necessary file to handle action class
so how i can handle this<body>
<form name="form" action="bluhbluh">
<logic:present name="address">
<logic:iterate id="RequestDVO" name="address">
TABLE align='center' border='1' cellPadding='5' cellSpacing='1' width="60%" style="border-color:#006600">
<TR>
<TD class="label" colspan="1" style="color:#000000">Shipment Quantity</TD>
<TD class="note1" colspan="1" NOWRAP="true"><bean:write name="RequestDVO" property="shipQuantity"/></TD>
<TD class="label" colspan="1" style="color:#000000"></TD>
<TD class="label" colspan="1" style="color:#000000"></TD>
</TR>
<TR>
<TD class="label" colspan="1" style="color:#000000">Address1</TD>
<TD class="note1" colspan="1" NOWRAP="true"><bean:write name="RequestDVO" property="shipCntrAddLine1"/></TD>
<TD class="label" colspan="1" style="color:#000000"> Address2</TD>
<TD class="note1" colspan="1" NOWRAP="true"><bean:write name="RequestDVO" property="shipCntrAddLine2"/></TD>
<TD ><INPUT TYPE ="text" name="reason"></TD>
</TR>
</logic:iterate>
</TABLE><P><P>
</logic:present>
</form>
</BODY>
i have an text field at last where user can type then once he clicked ok it has to store the values in database but i dont know why its not doing so -
Executing a SQL Command in my bean class
Hello everyone,
I'm using JDeveloper 12.1.2.0.0.
I have an interest in executing a query in my bean method. I've done some research and i still got a code but it can't find the method that the method requires so i tried to added the query in my AppModule and i've added my method as a data control but how can i access it and modify it in my bean method?
The page with the code that doesn't find the method: http://jjzheng.blogspot.pt/2010/11/run-single-query-in-application-module.html
Which gives me: "Method 'getDBTransaction' not found"
The page that creates my method as a data control: http://amit-adf-work.blogspot.pt/2013/09/how-to-execute-sql-using-adf-application.html
Is any of this the right way? How can i execute a SQL Command in my bean class?
Regards,
Frederico.This is the code I use
// GET A METHOD FROM PAGEDEF AND EXECUTE IT
// get the binding containe
BindingContainer bindings = BindingContext.getCurrent().getCurrentBindingsEntry();
// get an Action or MethodAction
OperationBinding method = bindings.getOperationBinding("YourMethodAction");
// if there are parameters to set...
Map paramsMap = method.getParamsMap();
paramsMap.put("param","value") ;
// execute the method
method.execute();
List errors = method.getErrors();
if (!errors.isEmpty())
// handle errors here errors is a list of exceptions!
// no error resume normal work
Timo -
Where to place a bean class in Tomcat 5.0
Hi,
I wrote a bean class and calling the bean class in the JSP file using
the useBean tag. I am encountring an INTERNAL SERVER ERROR.
At present i have placed my jsp-file,source-file, and class-file in
jsp-examples folder. Did i place any files in the wrong place?????????
Can any one help me with the solution!!!!!!!!!!!!!!!!!!!!hi,
thank you vey much. i was successful in executing the jsp when i placed the bean class in the WEB-INF\classes folder.
juli
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