ADF BC/Faces - Order of validation / backing bean action problem

Hello,
I want the user to enter the same "operation date" into all adf faces table rows created in one batch (one transaction).
So I removed operation date field from the table and added "unbound" date field above the table. The date field value is then copied into all new rows in background. This process is invoked from backing bean from Commit button actionListener method.
The problem is the validation of the operation date in entity is executed before a new date value is copied into the date attribute (validation of model is in JSF lifecycle executed prior invoking actions in backing beans).
It means the user can enter dead lock when he enters invalid date (for example date higher then a valid value).
Then after commit:
1. First validation is ok (wrong date value haven't been copied into model yet)
2. backing bean copy action is executed - model now contains wrong date value
3. Validation before commit isn't successfult - error message is displayed
4. User corrects the date value and presses commit again but:
5. First validation is not successful - model still contains recent wrong date value - error message is displayed again
6.There is no way out from this situation
I'm going to override lifecycle to be able to invoke copy method before validation cycle. Is this solution acceptable? Do you have any other suggestion?
Thank you.
Rado

hi Rado
Would it make sense to design your ADF BC View Objects in some kind of master-detail shape that fits your data?
View Object : OperationMaster (OperationDateAttr, ...)
View Object : OperationDetail (OperationAttr1, OperationAttr2, ...)
View Link : OperationDetailForMasterVL (based on some attribute that keeps the detail rows together)
You would need some Application Module method that does the "row batch setup", but it look like your already have something like this.
A change to OperationMaster.OperationDateAttr could update all its detail rows date attribute.
I think that building a UI on this would be less "view layer dependant".
Just a suggestion.
regards
Jan Vervecken

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>
Warning: Long Post. I wanted this to be clear as to what I really need help with.
>
What I am looking for is more clarification on both how to use and when to use backing beans.
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I have a single page. The goal is to have several filter components, then a run report. Under the run report there are several components based on select statements that use one or more of the filter components. These components are displayed as graphs (because that is what management wants to see.)
Seems easy enough.
I have four graphs that are desired. In my oracle schema, I use sql developer to develop four queries that return the data that I want.
In the model, I create four view objects. Each one has a one or more binds for filters. I don't put in a default value, but make them required. Most of the views have a common bind for techID, which actually points to a different column name in each of the views, but generally has a similar meaning. I didn't create the tables, just have to live with the existing design. Sound familiar? After creating read only views that do not have EOs, I add these to the Application Module. I also create a lookup for techid that queries a table and returns two values, techname and techid. I want this to be used for a combobox to select the user to run the report on.
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To test, I drag each of the VOs to the page as simple read only tables, not bothering to change any of the settings. This is just to make sure it is working.
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<af:commandButton actionListener="#{bindings.updateViews1.execute}"
text="updateViews1"
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Now to make this more interesting, I want to add the date filter.
I delete the Command button and the combobox. I now drag the method that has two parameters. Same procedure as before, adding the techid parameter that uses the combobox that uses the lookup vo. Great so far.
Now here is where I run into problems and am trying to understand backing beans as a possible solution.
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This is why I am requesting more examples, so that the mixing of ADF BC model bound to ADF faces components and programming code to get the compoents to work according to a specific user case can be completed.
Thanks, Ken

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import javax.faces.event.ValueChangeEvent;
import oracle.adf.view.faces.component.core.input.CoreInputText;
import oracle.adf.view.faces.component.core.output.CoreOutputText;
import oracle.adf.view.faces.component.html.HtmlBody;
import oracle.adf.view.faces.component.html.HtmlHead;
import oracle.adf.view.faces.component.html.HtmlHtml;
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import oracle.jbo.Row;
import oracle.jbo.ViewObject;
import oracle.jbo.client.Configuration;
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private HtmlHead head1;
private HtmlBody body1;
private HtmlForm testForm;
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private CoreOutputText firstName;
private CoreOutputText jobId;
private CoreOutputText salary;
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this.html1 = html1;
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return html1;
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this.head1 = head1;
public HtmlHead getHead1()
return head1;
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this.body1 = body1;
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return body1;
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this.testForm = form1;
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return testForm;
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this.employeeId = inputText1;
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return employeeId;
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String EmployeeId=(String)event.getNewValue();
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vo.executeQuery();
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this.firstName = outputText1;
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return firstName;
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this.jobId = outputText2;
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return jobId;
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this.salary = outputText3;
public CoreOutputText getSalary()
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<%@ page contentType="text/html;charset=windows-1252"%>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h"%>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
<%@ taglib uri="http://xmlns.oracle.com/adf/faces" prefix="af"%>
<%@ taglib uri="http://xmlns.oracle.com/adf/faces/html" prefix="afh"%>
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<afh:html binding="#{backing_BindTest3.html1}" id="html1">
<afh:head title="Home" binding="#{backing_BindTest2.head1}" id="head1">
<meta http-equiv="Content-Type"
content="text/html; charset=windows-1252"/>
<style type="text/css">
body {
background-color: #f7f7f7;
</style>
</afh:head>
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<af:inputText label="Employee No" binding="#{backing_BindTest3.employeeId}"
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<af:outputText value="outputText2"
binding="#{backing_BindTest3.jobId}"
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<af:outputText value="outputText3"
binding="#{backing_BindTest3.salary}"
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</afh:body>
</afh:html>
</f:view>
<%-- oracle-jdev-comment:auto-binding-backing-bean-name:backing_BindTest2--%>
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and what are the changes i can do in my jsf page

hi,
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name=(CoreOutputText)curUser.getAttribute("FirstName");
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     at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:269)
     at javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:363)
     at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:98)
     at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:245)
     at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:110)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:213)
     at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:65)
     at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl._invokeDoFilter(AdfFacesFilterImpl.java:228)
     at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl._doFilterImpl(AdfFacesFilterImpl.java:197)
     at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl.doFilter(AdfFacesFilterImpl.java:123)
     at oracle.adf.view.faces.webapp.AdfFacesFilter.doFilter(AdfFacesFilter.java:103)
     at com.evermind.server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:15)
     at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:162)
     at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:621)
     at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:370)
     at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:871)
     at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:453)
     at com.evermind.server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:221)
     at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:122)
     at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:111)
     at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
     at oracle.oc4j.network.ServerSocketAcceptHandler.procClientSocket(ServerSocketAcceptHandler.java:239)
     at oracle.oc4j.network.ServerSocketAcceptHandler.access$700(ServerSocketAcceptHandler.java:34)
     at oracle.oc4j.network.ServerSocketAcceptHandler$AcceptHandlerHorse.run(ServerSocketAcceptHandler.java:880)
     at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
     at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.ClassCastException: java.lang.String
     at view.backing.ChangeValue.changeMethod(ChangeValue.java:49)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:585)
     at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:146)
What will be the resion please help it is very critical for me

How to access backing bean of a xml component , in a managed bean of ADF

Hi,
We wrote a xml component in JSF and this component is used in ADF project by including the component as jar .
In a master detail page , we need to update the value of the xml component, when the master row is changed. How to do this.
We are trying to do this by accessing the backing bean of the xml component in ADF project's managed bean. So when ever the row changes, we can access the managed bean in ADF and then can set the value of the xml component by accessing it's backing bean
But i can't access the backing bean instance of the xml component in the ADF managed bean. Could you let me know how to do this. Thanks .

Thanks for the response Shay. The xml component is added as a custom component , with a separate faces-config.xml file . This component is added to ADF project as a jar with a custom tag.
In the ADF project , i'm having different managed beans and i can access them from a different managed bean.
The issue is, i can't access the added custom component's backing bean which is available from a different jar , defined in a separate faces-config.xml file . This backing bean is defined with request scope.

Managed bean/Data exchange between two ADF Rich Faces based applications

Hi,
I have been trying to research what seems to be a small issue. My requirements are as follows.
1. I need to be able to pass managed bean information from one ADF Rich Faces based application to another (in two separate ears) at runtime (e.g. from Ear1: SenderApp/Sender.jspx -> Ear2: ReceiverApp/Receiver.jspx).
2. I do not want to use the database as my applications need to be performant.
3. Serialization/de-serialization would fall pretty much under the database category. In other words, I like to avoid Serialization/de-serialization of the managed bean.
4. I cannot use query string due to security issues.
My question is as follows:
1. Is there any standard/architecture/best practices for data exchange of backing beans or other forms between two ADF Rich Faces based apps (in two separate ears)?
2. Has someone found anything similar to an applicationScope that works across applications?
I would appreciate any ideas.
Thanks very much,
Edited by: user11219846 on Jul 23, 2009 2:38 PM
Edited by: user11219846 on Jul 23, 2009 2:42 PM

Hi,
its not an ADF Faces problem, but not possible in Java EE. You can however fallback to vendor specific implementations like in WLS. From the WebLogic documentation : http://e-docs.bea.com/wls/docs103/webapp/sessions.html
Enabling Web applications to share the same session*
By default, Web applications do not share the same session. If you would like Web applications to share the same session, you can configure the session descriptor at the application level in the weblogic-application.xml deployment descriptor. To enable Web applications to share the same session, set the sharing-enabled attribute in the session descriptor to true in the weblogic-application.xml deployment descriptor. See “sharing-enabled” in session-descriptor.
The session descriptor configuration that you specify at the application level overrides any session descriptor configuration that you specify at the Web application level for all of the Web applications in the application. If you set the sharing-enabled attribute to true at the Web application level, it will be ignored.
All Web applications in an application are automatically started using the same session instance if you specify the session descriptor in the weblogic-application.xml deployment descriptor and set the sharing-enabled attribute to true as in the following example:
+<?xml version="1.0" encoding="ISO-8859-1"?>+
+<weblogic-application xmlns="http://www.bea.com/ns/weblogic/90";;>+
+...+
<session-descriptor>
+<persistent-store-type>memory</persistent-store-type>+
+<sharing-enabled>true</sharing-enabled>+
+...+
+</session-descriptor>+
+...+
+</weblogic-application>+
Frank

Backing Bean Validation Method error

Hi all,
I've an ADF JSF User Registration Form and I want to set my server-side validation to confirm passwords entered by the user using the validator attribute bound to customized validation logic sitting in a method my backing bean. I've tried quite a few cracks at this but I still seem to get a java.lang.NullPointerException error when the method is invoked.
The relevant method in my Backing Bean looks like this:
public void comparePassword(FacesContext facesContext, UIComponent uiComponent, Object newValue) {
//Get the new value that is passed passed from the Confirm Password field
String confirmPassword = (String)newValue;
//Get the password that has already been entered
String password = (String)getLoginPasswordText().getValue();
//Compare passwords and raise validation error message
if (!password.equals(confirmPassword)){
throw new ValidatorException(new FacesMessage
(FacesMessage.SEVERITY_ERROR,
"Passwords need to be the same",
"Password values should be the same"));
The getters and setters for the components are also in the bean and the gettLoginPasswordText() returns the original password input text field (the one that I want to compare it to).
Is there something that I've missed here?
Cheers

Thanks Frank.
I now understand a bit more about value binding. But unfortunately I need a little more help (from anyone) on this one. I've tried quite a few things and I think the problem stems from the fact that the validation code doesn't seem to pickup the value entered in the comparison field - at least in the way that I've coded it. Here's a more complete example of what I'm trying to overcome:
I've got two input text components:
<af:inputText required="true" simple="true"
id="loginPasswordText"
immediate="true"
value="#{backing_UserRegistration.password1}">
</af:inputText>
<af:inputText required="true" simple="true"
id="loginConfirmPasswordText"
immediate="true"
validator="#{backing_UserRegistration.comparePassword}"
value="#{backing_UserRegistration.password2}">
</af:inputText>
I've setup the relevant accessors as in the following:
String password1 = "";
public String getPassword1(){
return password1;
String password2 = "";
public String getPassword2(){
return password2;
And my validation now code looks like this:
public void comparePassword(FacesContext context, UIComponent toValidate, Object value) {
if (!Password2.equals(Password1)) {
FacesMessage msg = new FacesMessage("summary message", " detailed message");
msg.setSeverity(FacesMessage.SEVERITY_INFO);
ValidatorException e = new ValidatorException(msg);
throw e;
I've tested the validation code on a standalone basis ie passing in a new variable as part of the method ie.
String word = (String) value;
if (word.equals("tom"))....
The validator and message fires OK, so I know the problem lies with picking up the entered values for password1 and password2. I know the values are there because I can "see" them on screen and they are recognized by standalone validators and the bean has a session scope.
Ideas anyone?
Thanks

ADF BC/Faces - Order of validation / backing bean action problem

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