Should I upgrade to STRUTS, ADF-UIX or to JSF

My applications still use the older bc4j objects and the trivial page flow manager. I have been looking at upgrading these apps to ADF-UIX and using STRUTS.
With the flurry of announcements about JSF, should I skip the planned upgrade above and go directly to JSF, if it's stable and complete enough, or wait until it is?
Thanks for any thoughts on this.
Steve

Shay,
Thanks for the quick response. Your comments on the lack of data binding cleared it up for me. I use data binding in my UIX code right now and plan to use more.
I will wait on JSF until a version is available with this feature.
Steve

Similar Messages

ADF UIX/Struts Portlets?

Hi all,
I'm trying to deploy an ADF BC / ADF databindings / Struts / ADF UIX application as a portlet. I've found an article on deploying Struts/JSP apps as portlets ( http://portalstudio.oracle.com/pls/ops/docs/FOLDER/COMMUNITY/PDK/ARTICLES/pdkstruts/portletize-your-app.html ) and a thread on some changes you need to make to use ADF databindings ( ADF and portlets - help please ), but it looks like I'd need to do something different for UIX.
For one thing, the first article suggests using the The PDK Struts Tag Library, which I assume is a JSP tag library and so not compatible with UIX.
Does anyone have any suggestions or resources for making portlet-compatible UIX pages?
Thanks much,
Avrom

Avrom,
I figured out how to deploy ADF/JSP to the portal but there are a few issues. The biggest one is that Oracle Support does not support ADF with the JPDK. I found out the hard way:(
UIX is most likely out of the question.
Good luck,
Hernando
[email protected]

ADF UIX with ADF Binding without Struts

After trying the CRUD tutorial from the "Complete ADF UIX Application (Browse, Create, Update, Delete)" -(http://otn.oracle.com/products/jdev/collateral/tutorials/9050/adfuix_tut.html), I found it may be thousands of struts actions in my upcoming project.
It will be difficult to merge and sync my team members works and the usefulness of StrutsPageFlow diagram will decrease severely although it is very convenient to drag data control operations to struts data actions without coding.
I am trying to use ADF Controller event handler as my page flow engine to eliminate these drawbacks.
When I use ADF controller as my page flow engine, if I have to pass ui model reference, initialize binding container, get binding container, get application module and refresh binding container, ... manually in my event handler codes just like the BasicDataAction class does in "ADF data binding primer (http://www.geocities.com/smuench/adfprimer/)"?
Is there any document that cover this information or any suggestions?
Daniel

ADF Controller questions should be posted in the JDeveloper forum.

Oracle ADF UIX and Struts

Does Oracle ADF UIX use Struts components internally? If yes, Does Oracle Support the issues that arises because this internally used Struts components? (I am using Oracle ADF in my application.
Thanks,
Aravind.

DataForwardAction and DataAction are build on top of struts actions to coordinate ADF databindings and it's life cycle;
UIX, has xmlns:struts="http://xmlns.oracle.com/uix/struts" this XML namespace has some elements like
<struts:form> and <struts:messageTextInput> also <struts:dataScope>
They work like struts jsp tag;
here a good paper;
http://download-west.oracle.com/otn_hosted_doc/jdeveloper/904preview/uixhelp/uixdevguide/struts.html
Marcos Ortega
Brazil

Making a delete commit automatically with ADF BC, Struts and ADF UIX

I'm trying to create a delete action that commits to the database automatically using ADF Business Components, Struts and ADF UIX.
I have a browse page from which the user can view all records in the table, and perform edit, create and delete actions on the data.
When the user selects a record and clicks edit they are taken to a screen where they can amend the details of that record. Create works in a similar way, but the create action on the view object is invoked before taking the user to the edit page (this is done by linking the browse page to an ADF DataAction (bound to Create) on the Struts page flow diagram, and then linking the ADF DataAction to the edit page).
When the user clicks submit on the edit page, the container follows a forward from the edit page to an ADF DataAction bound to the Commit method, and then from there a forward back to the browse page.
This seems to work fine for edit and create, but when I try to do something similar for delete, it behaves unpredictably - sometimes the delete is committed to the database, sometimes not.
To be more specific, the way I have tried to implement the auto commit delete is as follows:
There is a UIX submitButton on the browse page called Delete. When clicked, this button triggers an event, which is caught by an event handler inside the page. The event handler causes the UIX servlet to take a forward to an ADF DataAction bound to the Delete method on the relevant view object. It thens follows a forward from the previously mentioned DataAction to another ADF DataAction bound to the Commit method for the application module. There is then a forward leading back to the browse page.
Has anyone else encountered similar problems?

did you figure this out?

UIX, Struts, ADF and JSP

Hi guys. My manager asked me to spell out these different strategies and I fell quite short of an adequate summary. I was wondering if someone could breifly define the following technologies and perhaps explain why you would use them. Additionally, we are embarking on a new project and are unsure of which technology to base it on (we will create a BC4J layer). It is a web application which may end up serving many anonymous users.
UIX
STRUTS
ADF
JSP (as used in JDev9.0.3.3 - Create a complete JSP application).
Thank you in advance for your time and consideration!
~Rob Lundeen

Here is a quick one:
Oracle ADF - A framework for building J2EE applications. Based on the Model-View-Controller architecture. Offers flexability in choosing implementation for the different layers.
STRUTS - a popular open source controller for managing the flow of Web applications when using the MVC architecture. Used as the controller for Oracle ADF based applications.
JSP - One way to build your Web user interfaces or View layer in Oracle ADF.
UIX - Another way to build the View layer for your application. Provides a set of rich HTML component and built-in functionality. Uses a declarative approach to building the page. Will evolve to become a JSF implementation.
BC4J - Now renamed to Oracle ADF Business Components - one of the way to implement the data source (or Business services) layer in Oracle ADF applications. Other ways include EJBs, Web Services, TopLink, or simple Javabeans.
I hope this helps,
Shay,
Oracle.

ADF UIX Role Based Access Control Implementation

Hi,
Can anybody suggest a detailed example or tutorials of how to implement a role based access control for my ADF UIX application.
The application users can be dymanically added to specific roles (admin, Secretary, Guest). Based on the roles, they should be allowed to access only certain links or ADF entity/view operations. Can this be implemented in a centralized way.
Can this be done using JAZN or JAAS. If so, Please provide me references to simple tutorial on how to do this.
Thanks a lot.
Sathya

Brenden,
I think you are following a valid approach. The default security in J2EE and JAAS (JAZN) is to configure roles and users in either static files (jazn-data.xml) or the Oracle Internet Directory and then use either jazn admin APIs or the OID APIs to programmatically access users, groups and Permissions (your role_functions are Permissions in a JAAS context).
If you modelled your security infrastructure in OID than the database, an administrator would be able to use the Delegated Administration Service (DAS), as web based console in Oracle Application Server. To configure security this way, you would have two options:
1. Use J2EE declarative security and configure all you .do access points in web.xml and constrain it by a role name (which is a user group name in OID). The benefit of this approach is that you can get Struts actions working dirctly with it because Struts actions have a roles attribute.
The disadvantage is that you can't dynamically create new roles because they have to be mapped in web.xml
2. Use JAAS and check Permissions on individual URLs. This allows you to perform finer grained and flexible access control, but also requires changes to Struts. Unlike the approach of subclassing the DataActionForward class, I would subclass the Struts RequestProcessor and change the processRoles method to evaluate JAAS permissions.
The disadvantage of this approach is that it requires coding that should be done carefully not to lock you in to your own implementation of Struts so that you couldn't easily upgrade to newer versions.
1 - 2 have the benefit of that the policies can be used by all applications in an enterprise that use Oracle Application Server and e.g. SSO.
Your approach - as said - is valid and I think many customers will look for the database first when looking at implementing security (so would I).
Two links that you might be interested in to read are:
http://sourceforge.net/projects/jguard/ --> an open source JAAS based security framework that stores the user, roles and permissions in database tables similar to your approach
http://www.oracle.com/technology/products/jdev/collateral/papers/10g/adfstrutsj2eesec.pdf --> a whitepaper I've written about J2EE security for Web applications written with Struts and JavaServer pages. You may not be able to use all of it, but its a good source of information.
Frank

Binding Editors not present in ADF UIX

Hi
I have been having some trouble with accessing both the Boolean Binding Editor and the LOV Editor from the structure window, when in design mode of an ADF UIX page.
My bindings are present, but when I 'Edit' the binding, the only option available to me is to select the Iterator and the attribute.
The documentation keeps telling me to select different tabs, but there aren't any!
Anyone had this problem????
I'm on;
Oracle IDE     9.0.5.16.27
Business Components Version     9.0.5.16.0
UML Modelers Version     9.0.5.14.78
Versioning Support     9.0.5.14.78
WebDAV Support Version     9.0.5.14.78
Struts Modeler Version     9.0.5.4.22
Designer Generators Framework     9.0.5.5.71
ADF UIX     2.2.8
java.version     1.4.2
java.home     C:\j2sdk1.4.2_04\jre
java.vm.name     Java HotSpot(TM) Client VM
java.vm.vendor     Sun Microsystems Inc.
java.vm.version     1.4.2-b28
user.language     en
user.region     <no value assigned>
user.name     chris.bell
user.home     C:\Documents and Settings\chris.bell
user.dir     C:\Software\Oracle\jdev9052\jdev\bin
os.name     Windows XP
os.version     5.1
os.arch     x86
http.proxyHost     <no value assigned>
http.proxyPort     <no value assigned>
http.nonProxyHosts     <no value assigned>
ide.patches
Thanks in advance
Chris

the primaryclient action should pass the rowkey of the current row (${uix.current.rowKeyStr}) as a parameter. This way the server can find the corresponding row on the server in an event handler.
see
http://www.oracle.com/technology/products/jdev/tips/jacobi/edittable/tip_adfuixtable_edit.html

ADF UIX programatic data binding

Oracle ADF UIX Developer's Guide mentions the possibility to use the UIX framework in Java, to create new objects or alter the existing ones.
E.g. we can create a table using a construct like:
TableLayoutBean tlb = new TableLayoutBean();
The same document demonstrates the data binding:
BoundValue rows = new DataBoundValue(_YOUR_NAMESPACE, YOURNAME, "rows");
tlb.setIndexedNodeList(new DataObjectListNodeList(rows));
For "simple" attributes using DataObject DataObjectList, etc. the procedure is clear. But what about creating a data bound table or input text:
<table model="${bindings.EmpView1}" ... >
<messageTextInput model="${bindings.DeptCode}"/>
Itâs easy to understand that model="${bindings.EmpView1}" or model="${bindings.DeptCode}" are equivalent to multiple attribute bindings (data, validation, read-only, etc.), but it looks that the classes/methods resolving these equivalences and linking the bean to the corresponding DCControlBinding, are not public (or maybe I was not able to find them).
How can we obtain programmatically, in Java, the same structure as described above (in XML)? The best would be to use the same classes used when the UIX XML document is parsed to create the page description.
It would be very nice to be able to use a structure like
tbl.setModel( new JUCtrlRangeBinding(...) );
txt.setModel( new JUCtrlValueBinding(...) );
or maybe
txt.setAttribute( "model", new TextInputModelBoundValue(...) ) etc.
In JSF we can do something like:
ValueBinding vb = application.createValueBinding(value);
component.setValueBinding(attributeName, vb);
Can we do something similar in UIX?
Any help will be appreciated,
thanks,
Mircea Ionita

Since the code is already written, it's a pity that we can't use/extend it. I don't like to say it (sorry) but I find this design choice (implement the "model" only into the XML parsing layer) a little bit strange (or maybe I don't understand... ;-) ). We should (or we are supposed to) be able to do in java everything that we can do in XML.
I would like to find more support/help for the programmatic approach. I have the feeling that you are too focalised on "use-our-state-of-the-art-tools/wizards-to-write-the-code-for-you" and you forgot that this is not suitable for all projects. E.g. our application creates the user interface according to a layout defined by each user. To generate it, we need to use at maximum the extension mechanism and we can't simply relay on "rendered" attribute etc.
-When should we expect this new UIX release?
-What about the UIX controller? The Struts controller will replace it?
-What about the source code of uixexp2-demo.jar (distributed with ADF_UIX_component_guide)?
-Why while debugging we can't set a method/class breakpoint on UIX classes (to understand the data flow) - the stack is secret?
Thanks

BUG? ADF-UIX uix-configuration.xml template-import

My UIX file works fine when I use templateImport:
<templates xmlns="http://xmlns.oracle.com/uix/ui">
    <templateImport source="tmpl/library.uit"/>
</templates>
...but I get the following error, when I try to make this templatelibrary global by adding the bold line in my uix-config.xml
<application-configuration debug="false">
    <default-expression-language>el</default-expression-language>
    <ui-extensions>
      <extension-class>
        oracle.cabo.adf.rt.AdfUiExtension
      </extension-class>
      <extension-class>
        oracle.cabo.servlet.struts.StrutsUIExtension
      </extension-class>
      <template-library>tmpl/library.uit</template-library>
    </ui-extensions>
</application-configuration>
java.lang.IllegalArgumentException: Could not find ExpressionParser with name:null as specified in the ApplicationConfiguration
     at oracle.cabo.share.xml.XMLUtils.getDefaultExpressionParser(Unknown Source)
     at oracle.cabo.share.xml.XMLUtils.getDefaultExpressionParser(Unknown Source)
     at oracle.cabo.servlet.xml.parse.UIExtensionsConfigParser._loadTemplateLibrary(Unknown Source)
     at oracle.cabo.servlet.xml.parse.UIExtensionsConfigParser.addCompletedChild(Unknown Source)
     at oracle.cabo.share.xml.TreeBuilder$Handler.endElement(Unknown Source)
     at oracle.xml.parser.v2.NonValidatingParser.parseElement(NonValidatingParser.java:1211)
     at oracle.xml.parser.v2.NonValidatingParser.parseRootElement(NonValidatingParser.java:300)
     at oracle.xml.parser.v2.NonValidatingParser.parseDocument(NonValidatingParser.java:267)
     at oracle.xml.parser.v2.XMLParser.parse(XMLParser.java:149)
     at oracle.cabo.share.xml.TreeBuilder.parse(Unknown Source)
     at oracle.cabo.share.config.ApplicationConfigurationParser.createInstance(Unknown Source)
     at oracle.cabo.share.config.ApplicationConfiguration.getInstance(Unknown Source)
     at oracle.cabo.share.error.ServletErrorLog.createErrorLog(Unknown Source)
     at oracle.cabo.servlet.BaseBajaContext.createErrorLog(Unknown Source)
     at oracle.cabo.servlet.BaseBajaContext.<init>(Unknown Source)
     at oracle.cabo.servlet.UIXServlet.createBajaContext(Unknown Source)
     at oracle.cabo.servlet.UIXServlet.doGet(Unknown Source)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at oracle.cuervo.share.servlet.PreviewServletContainer.handleRequest(PreviewServletContainer.java:310)
     at oracle.cuervo.share.servlet.PreviewServletContainer.handleRequest(PreviewServletContainer.java:226)
     at oracle.cabo.ide.addin.preview.UIXRenderThread._reallyLoad(UIXRenderThread.java:274)
     at oracle.cabo.ide.addin.preview.UIXRenderThread.runImpl(UIXRenderThread.java:205)
     at oracle.cabo.ide.addin.preview.BasePreviewThread.run(BasePreviewThread.java:112)

Hi MatLee,
I follow the guide on chapter Configuration for ADF UIX to redefine paths for uit files and uix files but it doesn't work. I created a new uix page and it keep saving the page in the default root directory (public_html) instead of the path that I specified.
Could you please show me very detail <uix-path> example and uit path example that redefine the default paths for those two type of files. I need a working code examples, not a generic or shortcut ones. I need to store those files in their respective directories and relative to the root directory because the application is big and have many modules; each module's uix pages should be saved in their own directories and also separate from the template files directory.
Also, can I specify more than one paths in the <uix-path> tag? and is this tag used for redefining the path for uit templates file location as well or there is other tag for it?
Thanks
Tom

ADF UIX Partial page rendering

Hi
I am facing a mysterious problem with partial page rendering in ADF UIX.
My page contains a <header> H1 and inside this there are two headers(H2 and H3).
The partial page rendering is in the header H2 and is working fine.
When i remove the below header H3 the partial page rendering ceases to work and get stuck.
Pasting the full code below. Please suggest.
<?xml version="1.0" encoding="windows-1252"?>

<page xmlns="http://xmlns.oracle.com/uix/controller"
xmlns:ui="http://xmlns.oracle.com/uix/ui"
xmlns:ctrl="http://xmlns.oracle.com/uix/controller"
xmlns:html="http://www.w3.org/TR/REC-html40"
xmlns:myTemplate="http://xmlns.oracle.com/xhub"
xmlns:bc4j="http://xmlns.oracle.com/uix/bc4j"
xmlns:data="http://xmlns.oracle.com/cabo/marlin" expressionLanguage="el">


<bc4j:registryDef>

<bc4j:rootAppModuleDef name="XhubRegAM"
defFullName="oracle.apps.snw.tpadmin.server.XhubRegAM"
configName="XhubRegAMLocal" releaseMode="stateful">
<bc4j:viewObjectDef name="TpProfilesRegVO" rangeSize="1" autoCreate="false"/>
<bc4j:viewObjectDef name="UsersRegVO" rangeSize="1" autoCreate="false"/>

<bc4j:viewObjectDef name="IdentifierDomainsView" rangeSize="20"/>

<bc4j:viewObjectDef name="XhubTerritoriesTlView" rangeSize="300"/>
</bc4j:rootAppModuleDef>
</bc4j:registryDef>

<templates xmlns="http://xmlns.oracle.com/uix/ui">
<templateImport source="xhubtpadmin.uit"/>
</templates>
<content>

<dataScope xmlns="http://xmlns.oracle.com/uix/ui"
xmlns:data="http://xmlns.oracle.com/uix/ui">
<provider>

<data name="textSource">
<bundle class="oracle.apps.snw.uicommon.TextProvider"/>
</data>

<data name="adminInfo">
<method class="oracle.apps.snw.tpadmin.webui.AdminInfo"
method="getAdminInfo"/>
</data>
</provider>
<contents>
<document>

<metaContainer>
<head title="${textSource.REGISTRATION}"/>
</metaContainer>
<contents>
<body>
<contents>

<myTemplate:xhubTpAdminPageLayout selectedTab="1">
<contents>

<messageBox automatic="true"/>

<form name="reg" method="POST">
<contents>


<formParameter name="event"/>

<bc4j:rootAppModuleScope name="XhubRegAM">
<contents>

<header text="${textSource.REGISTRATION}">
<contents>

<styledText styleClass="OraInstructionText"
text="${textSource.REG_PAGE_EXPLAIN}"/>

<header text="${textSource.REG_COMPANY_INFO}">
<contents>
<stackLayout>
<contents>

<labeledFieldLayout id="TpPartialDetails" width="80%"
labelWidth="40%">
<contents>
<messageChoice name="OracleAppsCustFlag"
prompt="Oracle Apps Customer"
required="yes" statePreserved="true"
selectedValue="${ui:defaulting(uix.pageProp.OracleAppsCustFlag, 'select')}">
<primaryClientAction>
<firePartialAction event="buyorsup"
targets="TpPartialDetails"
formSubmitted="true"
unvalidated="true"/>
</primaryClientAction>
<contents>
<option text="-select-" value=""/>
<option text="${textSource.YES}" value="Y"/>
<option text="${textSource.NO}" value="N"/>
</contents>
</messageChoice>
<messageTextInput prompt="${textSource.ORACLE_CSI_Q}"
name="OracleCsi"
text="${uix.pageProp.OracleCsi}"
rendered="${ui:defaulting(uix.pageProp.OracleCsiRender, 'false')}"/>
<messageTextInput prompt="${textSource.YOUR_TP_NAME}"
name="TpName"
tip="${textSource.YOUR_TP_NAME_TIP}"
required="no"
text="${uix.pageProp.TpName}"
rendered="${ui:defaulting(uix.pageProp.TradeswithTPRender, 'false')}"/>
<messageTextInput prompt="${textSource.YOUR_TP_ALIAS}"
name="TpAlias"
tip="${textSource.YOUR_TP_ALIAS_TIP}"
required="no"
text="${uix.pageProp.TpAlias}"
rendered="${ui:defaulting(uix.pageProp.TradeswithTPAliasRender, 'false')}"/>
</contents>
</labeledFieldLayout>
</contents>
</stackLayout>
</contents>
</header>

<header text="${textSource.TP_DEFAULT_CONTACT_INFO}">
<contents>
<labeledFieldLayout width="80%" labelWidth="40%">
<contents>

<messageTextInput prompt="${textSource.PASSWORD_PROMPT}"
name="Password" id="Password"
required="yes" secret="true"
maximumLength="32"
text="${uix.pageProp.Password}"/>
<messageTextInput prompt="${textSource.PASSWORD_CONFIRM_PROMPT}"
name="PasswordConfirm"
id="PasswordConfirm" required="yes"
secret="true" maximumLength="32"
text="${uix.pageProp.PasswordConfirm}"/>
</contents>
</labeledFieldLayout>
</contents>
</header>
</contents>
</header>
</contents>
</bc4j:rootAppModuleScope>
<spacer height="10"/>

<inlineMessage required="yes"
prompt="${textSource.REQUIRED_FIELD}"/>
</contents>
</form>
</contents>

</myTemplate:xhubTpAdminPageLayout>
</contents>
</body>
</contents>
</document>
</contents>
</dataScope>
</content>

<handlers>

<event name="continue">
<bc4j:findRootAppModule name="XhubRegAM">
<method class="oracle.apps.snw.tpadmin.webui.RegistrationHandlers"
method="register"/>
</bc4j:findRootAppModule>
</event>

<event name="cancel">

<bc4j:findRootAppModule name="XhubRegAM">

<bc4j:rollback/>

<go name="main"/>
</bc4j:findRootAppModule>
</event>

<event name="buyorsup">
<bc4j:findRootAppModule name="XhubRegAM">

<method class="oracle.apps.snw.tpadmin.webui.RegistrationHandlers"
method="isBuyerorSupplier"/>
</bc4j:findRootAppModule>
</event>
<event name="*">
<bc4j:findRootAppModule name="XhubRegAM">

<method class="oracle.apps.snw.tpadmin.webui.RegistrationHandlers"
method="setContext"/>
</bc4j:findRootAppModule>
</event>
</handlers>
</page>
Please suggest if you know of any documentation on ADF UIX partial page rendering.
ADF UIX has very little documentation online and finding it hard to debug this issue.
It ll be of great help.
Thanks
Kamal

Hi Jason,
As of EA9, all rendered components support a partialTriggers attribute. This attribute takes a list of master component IDs. If any of the master components are updated via a partial event, the dependent component will be rerendered in the partial update.
If you are on an earlier release, you should upgrade.
Thanks,
Jeanne

ADF UIX Forward on Successful Update

I am working through the tutorial at:
http://otn.oracle.com/obe/obe9051jdev/uixTutorial/lesson_UIX.htm
I have complete the tutorial, and the way it works now there is a browse page which lists rows from the database. You can select a row and press modify, or click on new to create a new one. Both buttons take you to a modify page.
The modify page posts back to itself. After I insert / update a record I am taken back to the modify page. Is there some way to have it forward the user back to the browse page if the insert / modification as successful and only go back to the modify page if there was a validation error?
Nick

you should create and event for your "Submit" button
placed on create/modify page, the event refers to
DataAction which must return you to browse page. Read
the tutorial more careful.Hi, I went back through the tutorial and I don't see anything I missed. I'm new to ADF / UIX / Struts and am not sure how to even handle this or where to look.
I want the modify form (formEmp.uix) to redisplay the form input if there was an error inserting into the database (which it does do now), and forward the user back to the browse page (browseDeptEmp.uix) if the insert / update was successful.
If I did miss something in the tutorial please point me to the right section but looking back through I didn't spot anything.
Thanks for your help,
Nick

ADF UIX: Get value in LOV messageList.

I have a messageList that bind to a vo but when I call getTxtCodeCat method from the Struts form bean in Action Class, it does always return me a list index (0,1,2...).
<struts:messageList model="${data.protecteddoc_GN_GnCodeSetupUIModel.CodeDescription}" name="txtCodeCat" prompt="[Code Category]" styleClass="DropdownMedium" required="yes" size="1">
<contents childData="${data.protecteddoc_GN_GnCodeSetupUIModel.CodeDescription.displayData}">
<option model="${uix.current}"/>
</contents>
</struts:messageList>
Please advice how do I retrieve the value instead of index from the LOV?

This thread is a duplicate. Direct all followups to:
Urgent! ADF UIX:LOV messageList returned index no. during runtime.

File upload, download using ADF UIX and not JSP

I have examples for the file upload, download using JSP
But I want to use ADF UIX. Look and feel in this is impressing and I want to use this. Any one have example for this.
Users will select a file from their desktop
This will be stored into the database (Any document. Word, Excel)
When they query the records then the UIX column need to give a hyperlink. Clicking on the link should prompt to download the file to the local system

Sure, I use the Apache Commons File Upload package, so that is what I will discuss here ( [Commons File Upload|http://commons.apache.org/fileupload/] ).
The Commons File Upload uses instances of ProgressListener to receive upload progress status. So first create a simple class that implements ProgressListener:
public class ProgressListenerImpl implements ProgressListener {
    private int percent = 0;
    public int getPercentComplete() {
        return percent;
    public void update(long pBytesRead, long pContentLength, int pItems) {
        if (pContentLength > -1) { //content length is known;
            percent = (new Long((pBytesRead / pContentLength) * 100)).intValue();
}So in your Servlet that handles file upload you will need to create an instance of this ProgressListenerImpl, register it as a listener and store it in the session:
ServletFileUpload upload = new ServletFileUpload();
ProgressListenerImpl listener = new ProgressListenerImpl();
upload.setProgressListener(listener);
request.getSession().setAttribute("ProgressListener", listener);
...Now create another servlet that will retrieve the ProgressListenerImpl, get the percent complete and write it back (how you actually write it back is up to you, could be text, an XML file, a JSON object, up to you):
ProgressListenerImpl listener = (ProgressListenerImpl) request.getSession().getAttribute("ProgressListener");
response.getWriter().println("" + listener.getPercentComplete());
...Then your XMLHttpRequest object will call this second servlet and read the string returned as the percent complete.
HTH

ADF UIX cancel/rollback button?

Hi
We're having a fair amount of trouble implementing a "cancel" button in our ADF UIX application (JDev 10.1.2). Apologies to those who read this same post on the ODTUG mailing list..... I'm hunting for even a hint of an answer before I approach Oracle Support.
To set the scene, we have a parent VO "Departments" with child VOs "Dispatch" and "Agency". Dispatch also has a FK to Agency.
We have a UIX view-screen that displays in a master-detail relationship Departments and Dispatch. From this screen the user can select the edit button, which navigates to an input-form screen to edit the currently selected Dispatch record.
The Dispatch record has effective_from and effective_to dates. The underlying EO has a MethodValidator that ensures the from date <= the to date.
On the edit screen we currently provide 2 buttons, Ok and Cancel. The Ok submitButton is bound to the commit binding, and navigates back to the view page via a struts link on completion.
If the user selects the ok button and MethodValidator returns an error, the edit page's MessageBox displays the error and the user remains at the edit page until they resolve the issue.
Our problems start with the cancel button.
Originally we implemented the Cancel button as a simply "button" that navigated back to the view page. This worked well as the changes are never submitted, and on returning to the view page the record is presented in it's original state before being edited, thus the user's changes have been "cancelled".
However if the user was editing an existing record, entered invalid dates that violated the MethodValidator, clicked ok and saw the MethodValidator error, then clicked cancel, on returning to the view page, any changes to the underlying record are visible including the invalid dates. I believe this occurs because the record has been submitted to the mid-tier by the ok button, and as such the changes now lies in the mid-tier.
Given that a cancel "button" which simply navigates back to the view page is not a viable solution, we decided to investigate using a rollback button on our edit page, which then navigated back to the view page.
There is a nasty side affect in using the rollback functionality, and has been a continuous frustration mentioned on OTN. When rollback is issued, it appears all iterators in the running application have their current row reset to the first element.
This is a pain as in our example this results in not only the Dispatch iterator being reset to the first element, but also the parent Departments iterator, and presumably all other iterators in the application too. This would be an extreme annoyance to the user in every time they selected cancel, they would then need to navigate back to the correct Departments and Dispatch record if they wanted to make a different change.
As such it is necessary to write some code to store the iterator positions before issuing the rollback, rolling-back, then restoring the iterator positions from the saved states.
Luckily we found some code on OTN to do this:
ADF - cancel button not working in input form(add new row)?
This mechanism appeared to work, but, then, we did find one problem.
I described at the beginning that our Dispatch VO is not only related to Departments but also Agency. To cater for this in our edit screen by including a LOV bound <messageList>, which displayed the relating Agencies for the user to select from.
In using the pinched OTN rollback code, in the same scenario as previously, when the user edits a record, invalidates the MethodValidator after clicking ok, then clicks cancel, on returning to the view page, the field in Dispatch that represents the Agency is incorrectly showing a numeric result such as 0, 1, 2 etc. We realised that the value being shown is the previous edit screen's <messageList> internal index number representing the value selected in the list, and not the actual value itself.
We're note sure why the OTN rollback code is causing this to occur. Though it restores the Agency iterator's position, it shouldn't result in the <messageList> index being written to the underlying Dispatch agency field, but rather the value the <messageList> index represents.
It appears to me we're caught between a "rock and a hard-place" here. The simple solution of using a cancel "button" doesn't work when errors are raised. The complex case of using a "rollback" button doesn't work due to the problem with the <messageLists>.
My research on OTN shows the "cancel vs rollback" button is a common frustration. Can somebody help me in providing a satisfactory "cancel" button that I can use throughout my app please?
Many thanks in advance.
Chris Muir

The stack:
Class                     Method
UsrEcvAmpdsViewRowImpl    setAgency
UsrEcvAmpdsViewRowImpl    setAttrInvokeAccessor
ViewRowImpl               setAttribute
DCDataControl             setAttributeInRow
DCJboDataControl          setAttributeInRow
JUCtrlValueBinding        setAttributeInRow
JUCtrlValueBinding        setInputValue
JUCtrlValueBinding        setInputValue
InitModelListener         _setInputValue
InitModelListener         _doModelUpdate
InitModelListener         eventStarted
AbstractPageBroker        _fireUIXRequestEvent
AbstractPageBroker        handleRequest
BaseUIPageBroker          handleRequest
PageBrokerHandler         handleRequest
UIXServlet                doGet
HttpServlet               service
HttpServlet               service
ResourceFilterChain       doFilter
JAZNFilter                doFilter
ServletRequestDispatcher invoke
ServletRequestDispatcher forwardInternal
ServletRequestDispatcher forward
RequestProcessor          doForward
RequestProcessor          processForwardConfig
RequestProcessor          process
ActionServlet             process
ActionServlet             doGet
HttpServlet               service
HttpServlet               service
ResourceFilterChain       doFilter
JAZNFilter                doFilter
ServletRequestDispatcher invoke
ServletRequestDispatcher forwardInternal
ServletRequestDispatcher forward
RequestProcessor          doForward
RequestProcessor          processForwardConfig
RequestProcessor          process
ActionServlet             process
ActionServlet             doGet
HttpServlet               service
HttpServlet               service
ResourceFilterChain       doFilter
JAZNFilter                doFilter
EvermindFilterChain       doFilter
ADFBindingFilter          doFilter
ServletRequestDispatcher invoke
ServletRequestDispatcher forwardInternal
HttpRequestHandler        processRequest
HttpRequestHandler        run
HttpRequestHandler        run
ReleasableResourcePooledExecutor$MyWorker run
Thread runAt a wild guess, InitModelListener is causing the issue, because it's the first place where we can see a setInputValue occuring?
To make this official I've raised a TAR (4613003.992) with Oracle Support with a cut down version of our app to work through the issue.

Should I upgrade to STRUTS, ADF-UIX or to JSF

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