bean 2 « Bean « JSF Q&A





1. Can I supply a Bean in selectItem.setValue()?    coderanch.com

Good day. Can I store a Bean(with setters and getters) in selectItem.setValue(a Bean here)? My problem is that until selectItem.setValue("1") is set with String everything works well. But if I set it with a Bean(with simple setters and getters) or with a "new Integer()" for example it stops working properly. selectManyListBox is displayed okay but when the form is submited "action ...

2. Managed Bean problem    coderanch.com

3. Specific method for bean JSF!    coderanch.com

Hi guys, I'm new developing with JSF and I want to know if there is a way I could write a method that will be called every time a request comes in. My bean is in the session scope! So, I can't write this code in the constructor because it will be called only once. Turn the bean scope to request ...

4. Accessing backing bean.    coderanch.com

5. Managed Beans vs Backing Beans    coderanch.com

8. My Managed Bean don't go to the requestmap.    coderanch.com

I have my page


Edit?
So as I'm testing, when I click in the button, after "editing". I don't know why ...





11. How this bean is remembering the state?    coderanch.com

13. Best practices for initializing backing bean?    coderanch.com

This is the scenario I'm facing on: I have a configuration screen where I need to show/update some configuration parameters that are read from DB with one query. This is how I'd like to do it, after the backing bean (with request scope) is created then read the parameters from DB and initialize the bean members so when the page gets ...

14. change values at bean    coderanch.com

15. Backing bean    coderanch.com

Hi All, I deleted already existing jsp and started coding from strach, when ever i added any JSF component ( by drag-drop using RAD7), I was able to see an entry at backing bean, and I have 2 command buttons (save & cancel) for which i added 2 methods at backing bean and using those at jsp page at corresponding action ...

16. Not getting new values in backing bean    coderanch.com





17. JSF bean methods    coderanch.com

20. how to fetch values from message bean    coderanch.com

22. How to compare bean values.    coderanch.com

Hi, I just started learning JSF. I am displaying a page with some of the field and before submitting the page I change any of the field value. In my bean class, I want to check if the state of the bean is same or changed. Though, I can do it by saving the whole bean in session before displaying it ...

23. Where to call service methods? backing bean??    coderanch.com

Hello, I am using JSF in my application. Though the application works fine, I have some doubts about the way it's implemented. The backing bean code looks like this: public class ColaPage { .... .... public Cola getCola() { .. some code... ............... .. getColaList()... ... do some calculations.... ... Cola cola = selectBestCola(); return cola; } ... ... ... } ...

25. backing beans vs managed beans    coderanch.com

hi, I am new to JSF, i was reading corejsf book and i am little confused with the concept of backing beans. It says bean which is designed to contain some or all components objects of a web form is called backing bean. But i guess same can be achieved by managed bean also. but if i understood correctly backing bean ...

26. Bean confusion!    coderanch.com

28. Populating value in managed bean    coderanch.com

29. How to call JSF backing bean method from the Applet    coderanch.com

Hi all, I'm writing a small JSF application which uses Applet for certain task. I need to call an existing JSF backing bean method from the applet. Let me elaborate my requirement. A JSF backing bean(*MyBean* - kept in Session) redirects to another JSF page. This JSF page loads an applet. This applet displays some records. Until this it works fine. ...

30. JSF - Managed Bean to Managed Bean Communication    coderanch.com

An alternative way - FacesContext facesContext = FacesContext.getCurrentInstance(); ELContext el = facesContext.getELContext(); Application app = facesContext.getApplication(); ExpressionFactory ef = app.getExpressionFactory(); ValueExpression ve = ef.createValueExpression(el, expression, type); return ve.getValue(el); where expression is the string representation of the el, i.e. "#{someBean.someProperty}" type is the Class of the expected returned type Advantages of using this approach is that it will automatically "resolve" the scope ...

31. Method in Backing bean doesn't work    coderanch.com

Hi, this si my first post in the forum, I hope you can help me because i'm geeting crazy with this. I have a jsf page, with vusal jsf, and a div container, in this container i also have a Layout panel, and inside this four hiddenFields. This hiddenFields are wired to a managed bean. When i submit the page it ...

32. Setting bean value problem    coderanch.com

35. Concurrency in JSF managed bean    coderanch.com

36. Bean value doubt    coderanch.com

37. Using req managed bean in scriplet    coderanch.com

39. How do I preload bean for editing?    coderanch.com

41. Programatically defining new managed bean    coderanch.com

Hi , I am writing a small business application and i need to have it structured in modules . All's fine and dandy . The trouble is that if i where to add a new module , i will need to define new managed beans . I would like to define them dynamically , without having to restart the application . ...

42. Repitive calls to the Backing Beans on Submit    coderanch.com

I have faces page called myworklist.xhtml. On this page I use a richfaces datatable to display available work objects. When a user clicks on a hyperlink the specific work item is retrieved from the database. I notice the following: During the initial load the backing bean reads the database 3 times before the pages is rendered. The same data is therefore ...

45. How do I use message bundles from my backing bean    coderanch.com

Sorry I should have mentioned that I am using Netbeans 6.5 My JSF page is (login.jsp):

47. A problem in showing data from backing bean on th epage when data changes.    coderanch.com

Problem: I have a page with data table --- I open a new modal dialog window (window.showModalDialog) on click of menu item on the row --> It opens the page to view details of the selected item --- When I close it and select different row of the table(in the first page) and open to see the details it shows the ...

48. Backing bean does not get updated data    coderanch.com

49. Backing Bean in JSF 1.2    coderanch.com

50. What is the best managed bean design in my case?    coderanch.com

Hi, I have two entities say A and B. A has a one to many relationship with B. I want to produce a simple crud for my entities. B operations must be carried out via A. For example if I want to add one B to an existing A I should do the following: B b = new B(); a.add(b); ADao.update(a); ...

51. Is Backing bean Required    coderanch.com

Hi All, I am having a Zipcode field and a City field. I want the city field to be popluated on the basis on value changed in zip code field. For this I have written a value change listener in the ZipCode field and made its immediate = "true" along with onchange = "this.form.submit()" . Now my issue is if the ...

52. how to create a list of inplaceInput tags from an array in the glue bean    coderanch.com

fyi



glue-bean code - I used StringBuffer in the model class so I'm converting them to Strings in the glue bean. When I learn a bit more about jsf/richfaces I ...

53. access another bean information    coderanch.com

JSF is an Inversion of Control (IoC) framework. To access one managed bean from another managed bean, you simply setup up the faces-config file to tell it to inject it as a managed-property. And code a setter for the second bean in the first bean. For example: Injectable service that permits abstract beans to know who the user is. ...

54. Calling backing bean from a struts application    coderanch.com

Shasi Mitra wrote:Hi all- There is one entry point to my application(JSF) from other application(Struts). My URL will be called with the information in hidden fields. How to map the URL to the JSF controller? Or the URL should point to a jsp and on loading the jsp Page we have to call the Controller. Please let me know how to ...

55. Is the managed bean singleton?    coderanch.com

Yes and no. It depends on how "single" you want it. An application-scope managed bean is truly single. Only one of them per copy of the deployed webapp per server VM. A session-scope managed bean is singleton on a per-user basis, but with multiple users, each user gets a unique and separate bean instance. A request-scope bean is singleton on a ...

60. JSTL and bean data    coderanch.com

I have a JSF application where on one side is a navigation area where each link represents a form to be filled out:

And the other side is a form. As the user completes the form, they can either click a 'Next' button to navigate to ...

61. JSF(managed) bean can not remove record    coderanch.com

62. Why the getter method of managed-bean was invoked twice?    coderanch.com

I wrote a very simlpe JSF page like this: <%@ page language="java" pageEncoding="UTF-8"%> <%@ taglib uri="http://java.sun.com/jsf/html" prefix="h"%> <%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%> Hello And the managed bean class like this: package myex2.lc; import javax.faces.event.ActionEvent; public class TestBackBean { private ...

64. Nested Backing Bean    coderanch.com

65. JSF Backing bean code    coderanch.com

Hi every body , I am creating one form , on that form I have created six tabs.On my entire application I have one backing bean .I have taken that backing bean in a session scope . My question : Can I create six different backing bean for each tab ? A short example : //MyBackingBean.java //This is the main backing ...

68. Accessing bean data within a scriptlet    coderanch.com

69. How to re-initialize bean from JSF??    coderanch.com

Hi, I am using JSF in my web project. I have a MyBean class, where I am initiazing the bean with some hardcoded values of some products. In my webpage, I display these products and I have a "details" command button for each displayed product/ When I click on this, I want to navigate to some details page. For this, I ...

71. Problem with facet in backing bean    coderanch.com

74. Backing Bean    coderanch.com

76. aj4:support initialize backing bean    coderanch.com

77. Initialize backing bean    coderanch.com

Hi, Can anybody tell me when does an object of a backing bean(in request scope) get created ? I have a few components in my jsp page,which have corresponding action listener defined in the backing bean. I have observed that a new instance of my backing bean (i.e the @PostConstruct getting called) is getting created for each events those fired from ...

78. Question about bean creating    coderanch.com

Hi, I'm quite new with JSF and while creating my first page I came up to a situation when I had to initialize the JAXBcontex. This usually takes some seconds and should be done only once, at the start of the application. I began reading about initializing in jsf and run into some solutions concerning creating another servlet that would be ...

80. How to get SelectItem's Label in backing Bean    coderanch.com

Hi Mallika Gowd: Thank you very much for your quick and accurate response. The idea is simple but I spent two days working on it. That was what I was looking for. It works! Now that I get the selected item I wonder if there is a way to associate a number to it, because I need to save in a ...

81. How to generate managed bean    coderanch.com

83. Resetting bean value in JSF    coderanch.com

84. The granularity of JSF beans    coderanch.com

A JSF bean is basically the Model part of a Model/View/Controller setup. It stands between the UI and the business parts of the application. Because of this, it typically partakes of the natures of both MVC model and of a business object. The View of a JSF app is typically some form of JSP. And just as in any good MVC ...

86. managed bean relation to IoC    coderanch.com

88. Facelet get Xhtml from Bean    coderanch.com

89. Calling bean method in enter press key    coderanch.com

90. difference between bean and backing bean?    coderanch.com

A backing bean is a bean that backs JSF Views. In other words, any bean that's directly referenced on a JSF view definition. In order to make sure that the backing bean is actually going to exist when the view is realized, it has to be a managed bean, so that the system will know what kind of bean to construct ...

93. JSF Accessing Bean Data    coderanch.com

94. DAO access issue on managed bean    coderanch.com

95. Quick question about reading a Bean reading a JSF inputLabel    coderanch.com

I have a registration page which forwards to a confirm page, how can I get my RegistrationBean to grab the values of my outputLabels example:- @managedBean(name="reg" ... private String email getEmail/setEmail I keep getting 'null', so I guess I shouldn't be using a h: outputText, but what should I be using? The only other thing I can ...

97. navigate from bean    coderanch.com

99. setting values of a bean    coderanch.com