Value binding InputText

Hi All,
I've a some string generated in backing bean on page load of the same page. How to bind that string to an InputText of the same .jspx page.
Regards,

Hi,
Can u please just go through the following link for same problem..which i'd posted earlier..with code Snippet.
InputText value binding issue
Here i'm not getting any value in the InputText.
Regards,

Similar Messages

Using value binding expressions to set 'required' attribute

I am trying to use a value binding expression to determine whether the value of various input control's is required or not according to where they are used and not having much luck. I wonder if anyone can shed some light on this...
The following expression works: <h:inputText id="name" required="#{true}"/> whereas <c:set var="required" value="true" scope="request"/>
<h:inputText id="name" required="#{required}"/> does not, even though the expression evaluates to true! I have tried numerous variations (requestScope.required, required == true, required ? true : false, etc.) to no avail. Interestingly, #{1 == 1} or binding to a backing bean method works, but as soon as you add a request variable it breaks.
Am I doing something wrong, is this something that JSF doesn't allow, or just a bug in the RI? Note that I don't want to vary this flag between multiple submissions of the same form, I am just trying to reuse the same JSP include to generate form controls for required and optional data on different forms to avoid a whole lot of cutting any pasting.
Any pointers gratefully received.
-- Keith Wilson

I had something like this happen, and here's what I concluded the problem was. Perhaps your problem is similar.
In the first non-working example you show a request-scope variable being set in the JSP page, and then use that to set the "required" attribute. But consider what happens when you submit the form. There is no longer any request-scope variable set because we have a new request and we don't go through the JSP page! (Not before validation is checked, anyhow).
So basically I concluded that the variable had to be in (say) session scope for it to work as you would like.

Value binding not working with rendered attribute

In my jsf page i'm encountering problem with value binding it is not working for a h:inputText with rendered condition even when the rendered condition evaluates to true & the component is rendered.While trying to retrieve the value of the components with conditional rendering on submit i'm unable to retreive the value while on removing rendered condition the value binding is working perfectly
<h:selectOneMenu id="DropDown" value="#pc_GeneralRequestInfo.objInfoDTO.State}" rendered="#pc_GeneralRequestInfo.objAddressRequestDetailsDTO.selectedAddressType == 'HOME'}">
<f:selectItems value="#{pc_GeneralRequestInfo.statesList}" />
</h:selectOneMenu>

There is a { missing from the value attribute in the code you posted.

Dynamic value binding for InputTextField - Expression within an expression

Hi,
I have this requirement where I have to use an EL expression's output as a bean's property in the value attribute of a InputTextField. E.g.
          <h:dataTable value="#{entity.formats}" var="field">
               <h:column>
                    <h:outputLabel value="#{field.shortDesr}"/>
               </h:column>
               <h:column>
                    <h:inputText value="#{*entity."+#{field.shortDesr}+*"}"/>
               </h:column>
          </h:dataTable>
The JSF page will be a generic one so the fields within a form will be dynamic and will be formed at run-time. Since the exact bean property(entity in the code above) for a particular field is not known before, it needs to be dynamicaly built
To give more clarity. In the following snippet, i know that entity is the bean to be used but which property(XXX) the text field has to be bound is not known and needs to be assigned at run-time.
<h:inputText value="#{entity.*XXX*"/>
Is this possible? Are there any direct JSF solution or work arounds for it? Appreciate your inputs.
Thanks
Ranjith

A: Dynamic value binding for InputTextField - Expression within an expression

Hi BaluSC,
Your solution is totally acceptable. But I was also looking for something that can make possible direct binding to the bean properties without going through a Map.
In the meantime, I worked around the problem by not using the DataTable. Instead I loop the collection and add the Form elements programatically (code given below). With this I am able to achieve the desired effect of binding directly to the bean's property. But I am hitting another problem now, On submit the form Seam throws up 'No active conversational context" error while binding the #{sdmManager.grid} attribute. Now, I am trying to figure out how to come across it.
JSF
     <h:panelGrid columns="2" binding="#{sdmManager.grid}">
</h:panelGrid>
Bean code
     public HtmlPanelGrid getGrid(){
     grid = new HtmlPanelGrid();
     List<UIComponent> children = grid.getChildren();
     Collection<FieldFormatData> formats = dataManager.getFieldFormatData();
     for(FieldFormatData format:formats){
          HtmlOutputLabel outputLabel = new HtmlOutputLabel();
          outputLabel.setValue(format.getShortDesr());
          children.add(outputLabel);
          HtmlInputText inputText = new HtmlInputText();
          inputText.setSize(10);
          inputText.setMaxlength(10);
          System.out.println("Binding ................................... " + format.getEntityField());
          inputText.setValueBinding("value", FacesContext.getCurrentInstance().getApplication().createValueBinding("#{entity."+format.getEntityField()+"}"));
          children.add(inputText);
     return grid;

How to declare value binding to array list element in a pojo?

I have a POJO called P, that contains an ArrayList member called w.
class P {
private ArrayList w = new ArrayList(5);
w is initied in the class constructor.
The POJO is in the SessionBean and I would like to reference individual
elements in the ArrayList via a value binding like so;
#{SessionBean1.instanceOfP.w[5]}
I'm not sure how to declare the getter/setter for member W in POJO P
so that setter and getter injection work.

You may not be able to directly set the indexed value.
Try some thing like this.
Add a property that returns the indexed value.
Ex. if you ArrayList objets are of type "String"
int index = 5;
public String getMyValue(){
return w.get[index]
Now your value binding would look something like
#{SessionBean1.myValue}
BTW, if you want to access different index, create another method
public void setIndex(int index){
this.index = index;
- Winston
http://blogs.sun.com/roller/page/winston?catname=Creator

Faces config exception - Can't get value from value binding expression:

the menuItem_Department shown property takes value from userRight's session bean object userDetail.
class UserRights{
    public boolean mDept = false;
    public boolean loggedIn = false;
    public boolean admin = false;
   //accessors
}now, the shown property picks correct value for #{userDetail.admin} but gives erros on this. any idea how to get around this exception:
Managedbean menuItem_Department could not be created Can't get value from value binding expression: '#{userDetail.mDept}'.
javax.faces.FacesException: Can't get value from value binding expression: '#{userDetail.mDept}'     at com.sun.faces.config.ManagedBeanFactory.evaluateValueBindingGet(ManagedBeanFactory.java:903)
     at com.sun.faces.config.ManagedBeanFactory.setPropertiesIntoBean(ManagedBeanFactory.java:547)
     at com.sun.faces.config.ManagedBeanFactory.newInstance(ManagedBeanFactory.java:233)
     at com.sun.faces.application.ApplicationAssociate.createAndMaybeStoreManagedBeans(ApplicationAssociate.java:256)
.. stack tracepointers appreciated.
reagrds
Rabs

well, i figured out the problem so thought to share with all aswell.
all i changed was the name of the variable from mDept to dept.
java beans has its own set of rules and naming conventions which i have not read much about but this problem had to do sumthing with that!
just changing the name simply works fine!

SelectMany checkbox value-binded with HashMap String,ArrayList

Hello,
Someone can help me please?
Im trying to create a page with a lot of HtmlSelectManyCheckbox, and i need to value-bind then to the same Object in my BackingBean.
First i attemped to bind all HtmlSelectManyCheckbox with a single ArrayList, but only the last SelectMany had their values inserted on the ArrayList...
So, now im trying to bind all the HtmlSelectManyCheckbox with a HashMap<String,ArrayList>, because i would have just one object and for each entry I would have the checkboxes that were cheked in a single HtmlSelectManyCheckbox.
Now my question: there is a way to make this work?
my code example
Backing bean
private HashMap<String, ArrayList> respostaMatrizCheck = new HashMap<String, ArrayList>();
     public HashMap<String, ArrayList> getRespostaMatrizCheck() {
          return respostaMatrizCheck;
     public void setRespostaMatrizCheck(HashMap<String, ArrayList> respostaMatrizCheck) {
          this.respostaMatrizCheck = respostaMatrizCheck;and the bindings
<h:selectManyCheckbox value="#{backingBean.respostaMatrizCheck['1'] }">
<h:selectManyCheckbox value="#{backingBean.respostaMatrizCheck['2'] }">And the error message given when i tryed this is the following:
javax.servlet.ServletException: ValueBinding for UISelectMany must be of type List or Array
Any help would be welcome.
Thanks,
Ferry

Has anybody solved a problem like this? I am facing the same problem and no response helped me so far.
Here is the web code:
<h:selectManyCheckbox value="#{processor.languages.languages1}">
     <f:converter converterId="languageConverter" />
     <f:selectItems value="#{categoryController.allLanguagesAsSelectItems}" />
</h:selectManyCheckbox>My backing bean "processor" looks like this:
     public Map<String, List<MyObject>> getLanguages() {
          return languagesMap;
     }(The backing bean has no "setLanguages()-method" since I did not need any with Map<String, String> for example.)
The converter I use creates a "MyObject" instance in its "getAsObject" conversion method.
I think everything should be okay then but the exception I get after submitting the page is:
java.lang.IllegalArgumentException: ValueBinding for UISelectMany must be of type List or Array
     org.apache.myfaces.shared_impl.renderkit._SharedRendererUtils.getConvertedUISelectManyValue(_SharedRendererUtils.java:191)
     org.apache.myfaces.shared_impl.renderkit.RendererUtils.getConvertedUISelectManyValue(RendererUtils.java:630)
     org.apache.myfaces.shared_impl.renderkit.html.HtmlCheckboxRendererBase.getConvertedValue(HtmlCheckboxRendererBase.java:308)
     javax.faces.component.UISelectMany.getConvertedValue(UISelectMany.java:308)
     javax.faces.component.UIInput.validate(UIInput.java:350)
.....Edited by: rapthor on Oct 31, 2007 6:39 AM

Using value binding expression for to-view-id

hi;
is it possible to use a value binding expression in the <to-view-id> element?
if not, is there a logical reason for this?
thanks

Shrek-2:
Are we there yet?No
Are we there yet?No
Are we there yet?Yes
Really?
NO
Seriously, the default navigation handler does not allow to use EL for the to-view-id, but you can obtain the desire behaviour with the custom handler decorator.
This is a code snippet:
     public void handleNavigation(FacesContext fc, String actionMethod, String actionName) {
          _base.handleNavigation(fc, actionMethod, actionName);
          String viewId = fc.getViewRoot().getViewId();
        if ((viewId.indexOf("#{") != -1) &&
                (viewId.indexOf("#{") < viewId.indexOf('}'))) {
             String bviewId = (String)fc.getApplication().createValueBinding(viewId).getValue(fc);
             if (bviewId != null)
                  fc.getViewRoot().setViewId(bviewId);
             else {
                  // you can throw the exception here
     }More about HandlerDecorator:
http://www.jsftutorials.net/jsfNavigation/jsf-login-navigation-redirect.html
http://www.jsftutorials.net/faces-config/navigationDecorator.html
P.S. Note: This feature might broke the separation between the different levels of application from the architectural point of view. Hard-coding the ViewIds inside the java code is not a good idea at all.
Sergey : jsfTutorials.net

Localized String with params - Value Binding Expression...

Hi All:
I see many e.g.s where a command button / or a label's value can be a localized resource string using the generic value binding expression:
"#{bundleVarName.keyName}"
what if the resource string has parameters? for e.g.
button.caption = Click Me for {0}
Can we assign a value binding expression with params for button captions etc.
Please help - I am a newbie in JSF,,,
regards
-Somesh

JSF developers have forgotten about this :)
Use other tools for displaying such messages (f. e. JSTL) where you need to have parametrized messaged.
But mostly, non-parameterized JSF will be enough.

H:selectOneMenu value binding to managed bean property

Please help. Cannot figure out why selectOneMenu value binding is not working...
The main contents of my jsp:
     <h:form id="form1" rendered="true">
          <P>
               <h:selectOneMenu value="#{MBListBoxExample.selectedProject}" rendered="true"
                    required="false">
                    <f:selectItems value="#{MBListBoxExample.items}" />
               </h:selectOneMenu>
          </P>
          <h:commandButton value="ShowSelected" rendered="true" action="#{MBListBoxExample.showSelected}" />
     </h:form>I have a managed bean with a property that is basically a custom object:
private Project selectedProject;The selectOneMenu gets populated with the following code in my managed bean:
     public List getItems() {
          try {
               ArrayList projectList = new ArrayList ();
               projectList.add(new Project(1, "Project 1"));
               projectList.add(new Project(2, "Project 2"));
               projectList.add(new Project(3, "Project 3"));
               projectList.add(new Project(4, "Project 4"));
               ArrayList itemList = new ArrayList();
               for (int x=0; x<projectList.size(); x++) {
                    SelectItem tempItem = new SelectItem();
                    Project tempProj = (Project) projectList.get(x);
                    tempItem.setLabel(tempProj.getName());
                    tempItem.setValue(tempProj);
                    itemList.add(tempItem);
               return itemList;
          } catch (Exception e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
          return null;
     }The following code is tied to my command button to display some simple output when the button is clicked:
     public void showSelected() {
          System.out.println("The selected item is: " + selectedProject.getName());
     }If I set the value of the SelectItem (tempItem) above to a String and make the selectedProject variable of type String, the code works.
My goal is to have the items in the list reference 'Project' objects and be able to get to the selected object when the user clicks the command button.
Any help is greatly appreciated.

The problem is that you're missing a converter. JSF needs to convert your values from Strings into Projects and vica verca.
When you do the form submission the values are passed as strings along with the labels. JSF isn't smart enough to convert them automatically.

If I consider heap size, should I follow component binding or Value binding

Hi,
I have an Web application my pages gets change rapidly in run time(components get disable and invisible at run-time depends on user input), So in that case which kind of binding approach I have to follow if I consider Heap memory of run time.

navaneeth.j wrote:
I am getting more grip on the component means, in ValueChange event I can get the updated value in the backing bean, That means on the updated values of the rest of the components are not available only we can get evt.getNewValue for event produced component. Example there are 5 components in the page if the event got generated from the 3rd component so in that valuechange event method needs the first two components values also. In value binding I can't get those value but in the component binding every component's updated value I can get.That's why I mentioned AJAX enabling the view in the previous post.
I can accept for 3rd party libraries if we use value binding it would be very easy to detach and use another one but for basic components I am not able to visualize the need to use the other >API, If my guess is right, for look and feel purpose means we can change the renderkit na.
Please suggest me am I thinking in the right direction or notRichfaces, Tomahawk and many others have lots of components that solve common problems that you are going to meet when using plain JSF components.
Yes people try to stick to standard JSF as much as possible but it is not always possible nor always beneficial.
Like I said it's not hard and fast. As long as you understand the advantages and disadvantages of each technique so that you can chose the correct approach according to requirements.
The memory differences are unlikely to impact in a major way.

Question on value binding

Hi I am trying to put 2 value binding statements into one method "ok()" in the backing bean. here they are.
     FacesContext context = FacesContext.getCurrentInstance();
     ValueBinding vb = context.getApplication().createValueBinding(
               "#{LoginBean.subject}" );
Subject subject = (Subject)vb.getValue( context );and
     FacesContext context = FacesContext.getCurrentInstance();
     ValueBinding vb = context.getApplication().createValueBinding(
          "#{UserGroupBrowserBean.selectedGroupName}" );
     vb.setValue( context, newGroup );This is giving me the error when i try to build it as follows:
"context is already defined in ok()" and "vb is already defined in ok()"
How do I fix this. how do i insert the second value binding expression in the method. any help hugely appreciated. 5DD's
thanks
joe

     ValueBinding vb0, vb1;
        FacesContext context = FacesContext.getCurrentInstance();
     Application ap = context.getApplication();
        vb0 = ap.createValueBinding("#{LoginBean.subject}" );
        Subject subject = (Subject)vb0.getValue(context);
     vb1 = ap.createValueBinding("#{UserGroupBrowserBean.selectedGroupName}");
     vb1.setValue(context, newGroup);Does your bean have proper setter/getter methods for them properties?

Oracle.jbo.NoDefException: JBO-35011: Attribute: x not found for value binding: y

Hi every one,
I migrate a project in version 11.1.1.6.0 of jDeveloper to 11.1.1.7.0 and after deploy, the application throws the exception "oracle.jbo.NoDefException: JBO-35011: Attribute: x not found for value binding: y". Rarely in the web or forum, i can't find anything about the code error JBO-35011.
Someone knows something about this?
Regards!

Don't know much about this error but it looks like you have an attribute binding which isn't connected to an vo attribute. Check all bindings pigthe page and pagedef if the are correctly setup. If you access attribute bindings from a bean you have to check them too.
Timo

Can set if condtion in value of inputText

Hi
can we set if statment in value in inputText? i need to check if value for example X=null then get value from Y else get value from Z
<af:inputText value="#{bindings.CloseConnectionCommand.inputValue}"
                        label="item 1:"
                        id="it5">
          </af:inputText>

Yes.
value="#{bindings.X.inputValue == null ? bindings.Y.inputValue : bindings.Z.inputValue }"
Amit

Value binding for to-view-id ?????

is it allowed to use value-binding for the "to-view-id" component in a navigation case in faces-config.xml ?
if yes, how ? i tried, it doesn't work !
example : <to-view-id>#{myBean.chosenURL}</to-view-id>
thx,
dom.

Hi,
I don't think this works because the navigation case expects a string. Here's the NavigationHandler code
private CaseStruct getViewId(FacesContext context, String fromAction,
String outcome) {
String nextViewId = null;
String viewId = context.getViewRoot().getViewId();
CaseStruct caseStruct = null;
synchronized (this) {
caseStruct = findExactMatch(viewId, fromAction, outcome);
if (caseStruct == null) {
caseStruct = findWildCardMatch(viewId, fromAction, outcome);
if (caseStruct == null) {
caseStruct = findDefaultMatch(fromAction, outcome);
return caseStruct;
Frank

Value binding InputText

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