To access the Session Bean?

Similar Questions

• Access EJB session bean in JSF managed bean

  Components of the project: Weblogic 11 G + 12 c, 12 c EJB3 JPA 2 Jdeveloper-ADF

  I need to access EJB session bean in JSF managed bean and some methods of execution by program

  Work method and return EJB below
  Is this fair? Another way

  public static Object getEjbForDataControl (String name) {}
  BindingContainer DCBindingContainer = (DCBindingContainer) BindingContext.getCurrent () .getCurrentBindingsEntry ();
  DCDataControl cDataControl = bindingContainer.findDataControl (name);
  Return cDataControl.getDataProvider ();
  }

  Thank you

  Mohsen

  Hi Isabelle,.

  I assumed that his Session EJB bean has not been exposed as a data control (my bad, didn't read any of the discussion).

  Antonis

• How to set the session bean of backing bean variable

  Hi all -
  
  I have a bean with a session variable and I want to set the value of this variable to a bean of support. Could someone please suggest how to achieve this.
  
  I use ADF 11 g.
  
  Greetings-
  Rohit

  Hello

  First of all, you need get the referral of bean in the bean to support session, and call the method that sets the value of the attribute. Getting session bean reference - you can use dependency injection, which is the best way, but you must register your bean in faces-config. XML (not adfc - config.xml, see http://biemond.blogspot.com/2010/04/ejb-injection-in-jsf-managed-bean.html).
  An alternative is to search the session bean's JNDI.
  Third option involves data controls: you create a session bean data control and then expose the method to fix your attribute value, in the calling page to jspx pageDef. To do this, you can't use method that begins with 'set', because you will not be able to exhibit in the pageDef (at least not with the Visual Editor). Then, you can call this method from the bean to support using this code:

          BindingContainer bindings = BindingContext.getCurrent().getCurrentBindingsEntry();
          OperationBinding operationBinding = bindings.getOperationBinding("yourSessionBeanMethodExposedInPageDef");
          operationBinding.execute();
  

  I hope this helps.
  Pedja

• Access the Session Managed Beans

  If I have a class that is registered in a session bean in the adfc-config...
  
  When it is instantiated?
  
  How can I access it from a backing bean and set its variables?

  I created a simple test case and my comments are the following:

  (1) the bean was not instantiated within the scope of the session until I have it referenced in an EL expression. In my case, I used
  "2) for the first time as #{sessionScope.MyBean.attribute1}" does not work, it causes a NullPointerException.
  (3) I have access to reading via without it having been instantiated so far.

  Point (3) does not correspond to your comments, so I think that your problem is related to something else. Check the declaration of the bean again. Also check that you have not saved an another bean under the same name but different scope and in a different config file (for example, in faces-config.) XML or in a TaskFlow definition file).

  Dimitar

  Published by: Dimitar Dimitrov, November 9, 2010 19:48

• We can access the session scope variable just by using its name

  Java EE 6 tutorial contains a "Case Study of the Duke's Bookstore example". I did not understand after statements of this case study:
  
  * bookdetails. XHTML *.
  
  {code}
  < h:outputText value = "#{selected.title}" / >
  {code}
  
  * BookstoreBean.Java*
  
  {code}
  public String details() {}
  Context()
  . getExternalContext()
  . getSessionMap()
  .put)
  "selected."
  getFeatured());
  
  return ('bookdetails");
  }
  {code}
  
  I want to know we can access the defined in bookdetails.xhtml session variable by simply using his name as done previously?

  This is a feature of basic Expression Language (EL), it is not specific to JSF. And it is not specific to the scope of the session, or you can put the beans in any area (page, request, session, application, flash, conversation, regardless of how extensive custom that you create) and reference it using EL only his name. The thing you need to take care of, is that the bean lives in a scope, which can be done using JSF specific or files of configuration, through CDI, annotations or by manually setting the bean in a specific through Java code scope. It is flexible, that is the nature of the Java platform.

• How to access the managed bean taskflow action result?

  Hi all
  I have a requirement where I have two areas of text (username and password) and a SignIn button. When the user clicks login, my action managed bean will run the view object and get the password for this user name. And that's why it will compare the password presented by the user and the password came from the view object. I a taskflow, in which I have two points of view, we're signIn page and other is the home page, and the result of the action is successful.
  The managed bean method here signIn Page for SignIn button.
  
  public String execute() {}
  String EnteredPassword = PassEncrypt();
  ApplicationModule am = ADFUtils.getApplicationModuleForDataControl ("AppModuleDataControl");
  ViewObject myView1 = am.findViewObject("LogindetailsView1");
  System.out.println ("Usrname is" + this.) (Username);
  myView1.setNamedWhereClauseParam ("v_Username", this.) (Username);
  myView1.executeQuery ();
  DCBindingContainer links =
  (DCBindingContainer) BindingContext.getCurrent () .getCurrentBindingsEntry ();
  DCIteratorBinding empIter = bindings.findIteratorBinding("LogindetailsView1Iterator");
  String DBPassword = empIter.getCurrentRow ().getAttribute("Password").toString ();
  
  System.out.println ("password is" + DBPassword);
  
  {if (EnteredPassword.Equals (dbpassword))}
  
  Here, I need to call the result of success, which will allow the user to get access to the display of the home page in taskflow.
  
  }
  else {}
  FacesMessage fm =
  new FacesMessage (FacesMessage.SEVERITY_ERROR, "Please check your name of user and password",
  "Please check your name of user and password");
  FacesContext.getCurrentInstance () .addMessage (null, fm);
  }
  Returns a null value.
  }
  
  If this can be done using the method call in taskflow then how could use it in my script?
  Please suggest.
  Thank you.

  you have a rule of navigation between these two pages
  If so, simply return the navigation rule name

  if(EnteredPassword.equals(DBPassword)) {
  return "success";
  }
  

• How to access the Page bean for handling Fields

  Scenario is,

  I have a page Fragment on delimited from the workflow and the page Fragment contained text entry boxes that are not related to any column from the database.  I put my stream of delimited tasks JSPx on page as a static region. Please help me about this how can I access these boxes comments presented on the Page of Data Manipulation in the bean to manage.

  Zaid,

  Please see the thread for details suggested below:

  What can do us for inputText fields in a bean for the data entry of user page jsff?

  You can create a variable of bean and who associate with the inputtext.

  You can bind the text of entry to the beans using the element binding.

  See you soon

  AJ

• Jdev 11 g, error when you try to run the session bean

  Hello
  
  I created a session façade for my entity beans. I don't know what happened but when I try to launch it I get the error below. I restarted my computer.
  
  Someone has an idea?
  Thank you.
  
  
  Redeploy the Application...
  < 7 May 2009 22:27:22 CEST > < WARNING > < hats > < BEA-149124 > < failures have been detected all introducing deploy task for application 'wd_tickets '. Error is: "[Deployer: 149164] modification of domain lock belongs to another session in exclusive mode - where the deployment operation cannot continue." >
  weblogic.management.ManagementException: [Deployer: 149164] modification of domain lock belongs to another session in exclusive mode - where the deployment operation cannot take place.
  # Incomplete deployment. # May 7, 2009 16:27:23
  oracle.jdeveloper.deploy.DeployException
  at oracle.jdevimpl.deploy.common.Jsr88RemoteDeployer.doDeploymentAction(Jsr88RemoteDeployer.java:247)
  at oracle.jdevimpl.deploy.common.Jsr88RemoteDeployer.deployImpl(Jsr88RemoteDeployer.java:157)
  at oracle.jdeveloper.deploy.common.AbstractDeployer.deploy(AbstractDeployer.java:94)
  at oracle.jdevimpl.deploy.fwk.WrappedDeployer.deployImpl(WrappedDeployer.java:39)
  at oracle.jdeveloper.deploy.common.AbstractDeployer.deploy(AbstractDeployer.java:94)
  at oracle.jdeveloper.deploy.common.BatchDeployer.deployImpl(BatchDeployer.java:82)
  at oracle.jdeveloper.deploy.common.AbstractDeployer.deploy(AbstractDeployer.java:94)
  at oracle.jdevimpl.deploy.fwk.WrappedDeployer.deployImpl(WrappedDeployer.java:39)
  at oracle.jdeveloper.deploy.common.AbstractDeployer.deploy(AbstractDeployer.java:94)
  at oracle.jdevimpl.deploy.fwk.DeploymentManagerImpl.deploy(DeploymentManagerImpl.java:436)
  at oracle.jdeveloper.deploy.DeploymentManager.deploy(DeploymentManager.java:209)
  at oracle.jdevimpl.runner.adrs.AdrsStarter$ $5 1.run(AdrsStarter.java:1365)
  Caused by: oracle.jdeveloper.deploy.DeployException
  at oracle.jdevimpl.deploy.common.Jsr88DeploymentHelper.redeployApplications(Jsr88DeploymentHelper.java:561)
  at oracle.jdevimpl.deploy.weblogic.common.Jsr88WeblogicDeploymentHelper.redeployApplications(Jsr88WeblogicDeploymentHelper.java:259)
  at oracle.jdevimpl.deploy.common.Jsr88RemoteDeployer.doDeploymentAction(Jsr88RemoteDeployer.java:222)
  ... 11 more
  Caused by: oracle.jdeveloper.deploy.DeployException: deployment failed
  at oracle.jdevimpl.deploy.common.Jsr88DeploymentHelper.redeployApplications(Jsr88DeploymentHelper.java:542)
  ... 13 more
  # Failed executing wd_tickets request because of the deployment error to DefaultServer.
  
  Published by: amcgator on May 7, 2009 13:38

  Once you start your weblogic Server

  Enter the URL: http://127.0.0.1:7101 / console

  username: weblogic
  password: weblogic

  hope this helps,

  Thank you

• Error during the generation of session bean

  Hi all
  
  EPCO: 12.1.1.1.0
  
  I created the entities JPA through the Assistant of "JPA entities from Tables" for employees and departments.
  Now, I want to create the bean in session using the Wizard "Session Bean of JPA entities.
  I give it a name and select all of the available features and click on "Finish". Then I got the following error:

  Error running the session bean generation task.

  In the console error log, I see the following:

  org.eclipse.core.commands.ExecutionException: 
       at oracle.eclipse.tools.webtier.ui.wizards.existing.EJBProjectFromExistingDataModelOperation.execute(EJBProjectFromExistingDataModelOperation.java:67)
       at oracle.eclipse.tools.adf.view.ui.internal.wizard.datamodel.NewSessionBeanFromEntitiesWizard.addEJBFacetOperation(NewSessionBeanFromEntitiesWizard.java:249)
       at oracle.eclipse.tools.adf.view.ui.internal.wizard.datamodel.NewSessionBeanFromEntitiesWizard.createNewServiceDefnAndGenBeans(NewSessionBeanFromEntitiesWizard.java:219)
       at oracle.eclipse.tools.adf.view.ui.internal.wizard.datamodel.NewSessionBeanFromEntitiesWizard.doFinish(NewSessionBeanFromEntitiesWizard.java:169)
       at oracle.eclipse.tools.adf.view.ui.internal.wizard.datamodel.NewSessionBeanFromEntitiesWizard.access$0(NewSessionBeanFromEntitiesWizard.java:160)
       at oracle.eclipse.tools.adf.view.ui.internal.wizard.datamodel.NewSessionBeanFromEntitiesWizard$1.run(NewSessionBeanFromEntitiesWizard.java:133)
       at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:121)
  Caused by: org.eclipse.core.runtime.CoreException: 
       at oracle.eclipse.tools.webtier.ui.wizards.existing.EJBProjectConverter.convert(EJBProjectConverter.java:281)
       at oracle.eclipse.tools.webtier.ui.wizards.existing.EJBProjectFromExistingDataModelOperation.execute(EJBProjectFromExistingDataModelOperation.java:61)
       ... 6 more
  Caused by: java.lang.NullPointerException
       at org.eclipse.jst.j2ee.project.facet.J2EEModuleFacetInstallDataModelProvider.hasValidRuntime(J2EEModuleFacetInstallDataModelProvider.java:213)
       at org.eclipse.jst.j2ee.project.facet.J2EEModuleFacetInstallDataModelProvider.propertySet(J2EEModuleFacetInstallDataModelProvider.java:162)
       at org.eclipse.jst.j2ee.internal.ejb.project.operations.EjbFacetInstallDataModelProvider.propertySet(EjbFacetInstallDataModelProvider.java:137)
       at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelImpl.internalSetProperty(DataModelImpl.java:182)
       at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelImpl.setProperty(DataModelImpl.java:172)
       at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelImpl.setStringProperty(DataModelImpl.java:201)
       at oracle.eclipse.tools.webtier.ui.wizards.existing.EJBProjectConverter.convert(EJBProjectConverter.java:126)
       at oracle.eclipse.tools.webtier.ui.wizards.existing.EJBProjectConverter.convert(EJBProjectConverter.java:273)
       ... 7 more

  Anyone has any idea what happened and how can I fix?
  
  Thank you in advance.
  
  Filip Huysmans.

  To work around this problem, follow these steps:
  -On the model JPA project
  RT - click on, and then select Properties
  -Select project facets
  -Unlock and deselect the facet utility Module
  -Select the facet of the EJB Module and Oracle WebLogic EJB Extensions

  Your project must be ready to perform the given operation.

• Why the method in the several times called session bean

  Hello
  I work with Jdev 11 g.
  I created an example Web J2ee Application.
  In the model project, I created:
  1 - entity Bean
  2 - stateless session bean (which contains a method that get the list of username == > em.createNamedQuery("OsaUser.findAll").getResultList ();)
  
  In the view controller project I created:
  1 - managed bean, session scope, a getter that calls the session bean and retrieve the result of the query.
  2 - a JSF page with af:table element with the value bound to the list in the managed bean.
  
  When I run the application, the data is displayed, but since I put system.out message I get this message several times.
  When I try to debug the application the breakpoints on the managed bean and session bean are available several times.
  
  Can you please advice why this happens.
  Concerning
  Emile BITAR

  Hello

  partially, it's the cycle of life and partially a known bug. The method is called during ApplyRequest and RenderResponse. If you check this in your output, so you see that make answer calls at least three times, which is the bug that we set. As a temporary work around, set a flag within the scope of the request (since your bean's scope of session that you use a requestScope attribute). The first time you run, you set the attribute flag. So every time its called again, you check to see if the indicator exists and if ignore the request. Because the flag is set to request scope, you needn't clean it explicitly

  Frank

• Session Bean vs Entity Bean?

  We have a contractor who joined us recently. He is our specialist in the ADF. We don't know much about ADF. He said the layer of data model in the ADF, he must choose between the session beans and entity beans. I am especially ignorant of these things and their implications. I come to know objects entity and visualization of objects from access DB. Can someone give me an idea of what these are? Why not just create entity objects and some objects view and link as I always see in the tutorials? I would ask him, but I'm eager to check what it says of a 3rd party because it seems that it may be misleading us.

  He wants to use Java Beans EJB (Enterprise), while you tell the ADF business components

  Entity Beans

  What is an entity bean?

  https://blogs.Oracle.com/Shay/entry/adf_business_components_or_top

• Unable to save the session value in the input field for db

  Hi all, I use oracle jdeveloper 11g release2. I'm not able to store session in the DB value. Actually I access to the session value (either x here) while the user logs and filling in the form of entrance to box as "#{sessionScope.x}". It works very well. But when I try to back up the folder DB his throw error saying required attribute 'viewname.x'. The value of x is present in the input area. Yet, its throwing the error. Any idea on this. Am I correctly access the session variable.

  Hello

  What I understand, it's that you have ViewObject based on the entity object this object attribute 'X' view and you must set this attribute with a value in the session scope.

  You can set this programmatic as attribute:

  setX(FacesContext.getCurrentInstance().getExternalContext().getSessionMap().get(sessionScopeVariableName));
  

  You can add this line in doDML() in EntityImpl as:

    protected void doDML(int operation, TransactionEvent e)
    {
      if(operation != DML_DELETE)
      {
        setX(FacesContext.getCurrentInstance().getExternalContext().getSessionMap().get(sessionScopeVariableName));
      }
      super.doDML(operation, e);
    }
  

• Cannot access the adobe

  Dear Sir

  I am not able to access the session recorded at my University. For some reason, he asks the password not asked before. The link of the session is

  [link removed by Moderator]
  

  
  

  Can someone help me with this?
  

  Access to the records of connection is controlled by the person who organized the 'room' - they may decide to require authentication to prevent people to share, but it's nothing to do with Adobe, and nothing we can change. Contact your University for help.

• Stateful session bean store module in EJB?

  Hello
  
  I want to use my EJB Stateful Session Bean (SFSB) module. But it seems that I can't use it because I should not inject my SFSB to a managed bean, or message driven bean (because if I do, the SFSB is communicated to all customers)
  
  I found that the proposed solution is to store SFSB in HttpSession.
  
  I'm doing this way, but I have null pointer exception.
  

  HttpSession session = (HttpSession) facesContext.getExternalContext().getSession(true); 

  So, how can I do this in the EJB module?
  
  Thank you

  Well me: hardly. Generally there is a web layer involved with a perfectly good session (or conversation) in what state can be maintained.

  Alas, you don't want to not seem to really say what is on your mind with or without my eyes so I'll offer just a hunch I have. A stateless bean remains "active" that as long as you keep a connection active IE. the reference that you are looking for or inject into your client code. The 'storage in the session bean' you refer to your first post is the Act of perpetuating the bean; as long as the reference is stored in the session you can continue to use it for the same customer without being cleaned by the container. However: when you are working from a web layer there is not a lot of use for a stateful bean because you can simply use the session itself directly to keep the substance. His personal preference if you use them or not really.

  Where you were going wrong in your initial post, is that you get the the HTTP session object in your EJB code. But you probably already figured out for yourself.

• Export of database Session Bean (J2EE 1.4)

  Hello people,
  
  I try to implement a download of large files for end users, the data are extracted from a database.
  
  Configuration and Description of the problem:
  ----------------------------------------
  
  A J2EE 1.4 stateless Session Bean record-wise reads data from a large database table, generates a string of each record and adds the string in a text output for the download stream. The steps involved are (in pseudocode):
  
  For each record in the database table:
  1.) apply business logic to record data (formatting of numeric values, etc.)
  2.) Accumulate record data in a single string.
  3 writing string.) to an OutputStream
  
  When finished: download a file over HTTP to the end user.
  
  The processed data are very large (resulting text file will be 200-1500 MB), I think go with water courses is a feasible solution. An attempt at the interface of Bean Session would be:
  
  public OutputStream exportDb() {...}
  
  My problem is: inside the exportDb method, I implémenterai the algorithm described above, but this means that the whole issue will take place in the memory object (in the OutputStream). The download will be executed by a ServletOutputStream. How can I export the database table one recording by the other without implementing the logic of all its activities in a Servlet? The only way I can think is a variant of the Session Bean method that takes the ID of the record that must be treated as a parameter and executes the method in a loop in some servlet code:
  
  ....
  Somewhere in the Servlet
  OS = getServletOutputStream;
  
  for (int i = 1; i < nrOfRecords; ++ I) {}
  OS. Write (exportDb (i));
  }
  
  Is there else any solution "clean"?

  Assuming that you are working with a local ejb, you pass the OutputStream in the method, for example "exportDb (OutputStream out)" and move the outputstream servlet directly to the ejb. If you use a remote ejb, things get more complicated (I wrote a library for broadcasting remotely over rmi, called rmiio, that you can use if you are working with a remote ejb).