ADF Best Practice

What is the best practice on developing a mobile device for multiple platforms (i.e. iPhone and iPad). Is there a way to display different data depending on the platform?

ADF Mobile takes care of the same for you, you won't need to do anything specific AFAIK.

Similar Messages

ADF Best Practices Document

Where can I find ADF Best Practices document ?

With version 10.1.2, the lack of a Best Practices book, left developers to "hunt and peck" through numerous documents, forum msgs, etc.
Plain and simply, there should be a doc that says how to do standard things with ADF.
1. So you want to Create a record...
- pre-populating the record
- handling the auditing
- proper handling of PKs generated by triggers
- avoiding the blank row issue
- propagating changes to the database both with default ADF handling or overriding ADFs dml to use stored proc calls.
- validating the record
- standard html controls and how they are used (radios, check boxes, text boxes, list dropdowns)
etc. etc.

ADF Best Practices - Paper now available.

I've published a new paper on ADF Best pracitces. Details on my blog.http://groundside.com/blog/GrantRonald?title=best_practices_for_building_adf_applicat&more=1&c=1&tb=1&pb=1
Regards
Grant

Hi Mark,
If you want i can take a look on it. We are using jdev 903/BIB903 accessing an AW created at Oracle OLAP 9205 with AWM. Faced a lot of problems to understand the metadata layer created to make Express work with RDBMS but system is up and running.
Please send it at [email protected] .
Thanks
Flavio

ADF Best Practice : About user session management in ADF BC

Hi,
I'm using ADF BC and I want to manage information specific to a particular user.
In the developer's guide at §9.10 it is advised to use APIs relative to DBTransaction class through the getSession and getUserData methods.
I have several questions :
* are Session objects returned by ApplicationModuleImpl.getSession() and DBTransaction.getSession() the same ?
* is it safe to manage user information by using the map returned by the oracle.adf.share.ADFContext.getSessionScope() method ?
* finally, which is the recommended approach and what are the caveats of each ?
Thanks a lot,
Seb.

Here is the code fragment :
   * Return the jhsUser object.
   * For this method to return an object, the user object must have called setUser
   * on the application module
public Object getUser()
    Object user = ADFContext.getCurrent().getSessionScope().get(JhsUser.JHS_USER_KEY);
    if (user!=null)
      return user;
    // code below for backwards compatibility
    if (getSession()==null)
      return null;
    return getSession().getUserData().get(JhsUser.JHS_USER_KEY);
   * Stores user object as am session userdata.
   * @deprecated user is now retrieved using pull meachnism with ADFContext, instead of
   * push.
public void setUser(Object user)
    getSession().getUserData().put(JhsUser.JHS_USER_KEY, user);
}Notice the deprecated method setUser.
Seb.

Best practice for mouseless ADF applications

I am developing an ADF application where the users do not want to use the mouse.
So I would like to know if there are a best practice for this?
I am already using the accessKey functionality and subforms defaultCommand
But I have had problems setting focus to objects on a page like tables. I would like a button to return the focus to the table after it has made the command like delete.
I have implemented a solution where I have found inspiration several threads and other webpages (see below).
Is this solution okay?
Are there any problems with it?
I would also like to know if there are better pathways to go like
out of the box solutions,
http://www.oracle.com/technetwork/developer-tools/adf/learnmore/79-global-template-button-strategy-360139.pdf (are there an example implementation?), or
http://one-size-doesnt-fit-all.blogspot.dk/2010/11/adf-ui-shell-supporting-global-hotkeys.html
in advance thanks
Inspiration webpages
https://blogs.oracle.com/jdevotnharvest/entry/how_to_programmatically_set_focus
http://technology.amis.nl/2008/01/04/adf-11g-rich-faces-focus-on-field-after-button-press-or-ppr-including-javascript-in-ppr-response-and-clientlisteners-client-side-programming-in-adf-faces-rich-client-components-part-2/
how to Commit table by writting Java code in Managed Bean?
Table does not refresh and getting error as UIComponent is Null
A short description of the solution:
(jdeveloper version 11.1.1.2.0)
--- Example where I use onSetFocus in jsff page
<af:commandButton text="#{hrsusuiBundle.FOCUS}" id="cb10"
partialSubmit="true" accessKey="f"
shortDesc="Alt+Shift+F"
actionListener="#{managedBean_clientUtils.onSetFocus}">
<af:clientAttribute name="focusField" value="t1"/>
</af:commandButton>
--- Examples where I use doTableActionAndSetFocus in jsff page
--- There have to be a binding in the jsff page to delete, commit and rollback
<af:commandButton text="#{hrsusuiBundle.DELETE}" id="cb4"
accessKey="x"
shortDesc="Alt+Shift+X"
partialSubmit="true"
actionListener="#{managedBean_clientUtils.doTableActionAndSetFocus}">
<af:clientAttribute name="focusField" value="t1"/>
<af:clientAttribute name="actionField" value="Delete"/>
</af:commandButton>
<af:commandButton text="#{hrsusuiBundle.COMMIT}" id="cb5"
accessKey="s" shortDesc="Alt+Shift+S"
partialSubmit="true"
actionListener="#{managedBean_clientUtils.doTableActionAndSetFocus}">
<af:clientAttribute name="focusField" value="t1"/>
<af:clientAttribute name="actionField" value="Commit"/>
</af:commandButton>
<af:commandButton text="#{hrsusuiBundle.ROLLBACK}" id="cb6"
accessKey="z" shortDesc="Alt+Shift+Z"
partialSubmit="true"
actionListener="#{managedBean_clientUtils.doTableActionAndSetFocus}"
immediate="true">
<af:resetActionListener/>
<af:clientAttribute name="focusField" value="t1"/>
<af:clientAttribute name="actionField" value="Rollback"/>
</af:commandButton>
--- This is the java class I use
--- It is published in adfc-config.xml as a request scope managedbean
public class ClientUtils {
public ClientUtils() {
public void doTableActionAndSetFocus(ActionEvent event) {
RichCommandButton rcb = (RichCommandButton)event.getSource();
String focusOn = (String)rcb.getAttributes().get("focusField");
String actionToDo = (String)rcb.getAttributes().get("actionField");
UIComponent component = null;
String clientId = null;
component = JSFUtils.findComponentInRoot(focusOn);
clientId = component.getClientId(JSFUtils.getFacesContext());
if ( "Delete".equals(actionToDo) || "Commit".equals(actionToDo) || "Rollback".equals(actionToDo) ){
BindingContainer bindings = BindingContext.getCurrent().getCurrentBindingsEntry();
OperationBinding operationBinding = bindings.getOperationBinding(actionToDo);
Object result = operationBinding.execute();
AdfFacesContext.getCurrentInstance().addPartialTarget(component);
if (clientId != null) {
makeSetFocusJavaScript(clientId);
public static String onSetFocus(ActionEvent event) {
RichCommandButton rcb = (RichCommandButton)event.getSource();
String focusOn = (String)rcb.getAttributes().get("focusField");
String clientId = null;
if (focusOn.contains(":")) {
clientId = focusOn;
} else {
clientId = findComponentsClientIdInRoot(focusOn);
if (clientId != null) {
makeSetFocusJavaScript(clientId);
return null;
private static void writeJavaScriptToClient(String script) {
FacesContext fctx = FacesContext.getCurrentInstance();
ExtendedRenderKitService erks = null;
erks = Service.getRenderKitService(fctx, ExtendedRenderKitService.class);
erks.addScript(fctx, script);
public static void makeSetFocusJavaScript(String clientId) {
if (clientId != null) {
StringBuilder script = new StringBuilder();
//use client id to ensure component is found if located in
//naming container
script.append("var textInput = ");
script.append("AdfPage.PAGE.findComponentByAbsoluteId");
script.append ("('"+clientId+"');");
script.append("if(textInput != null){");
script.append("textInput.focus();");
script.append("}");
writeJavaScriptToClient(script.toString());
public static String findComponentsClientIdInRoot(String id) {
UIComponent component = null;
String clientId = null;
component = JSFUtils.findComponentInRoot(id);
clientId = component.getClientId(JSFUtils.getFacesContext());
return clientId;
}

Hi,
I am developing an ADF application where the users do not want to use the mouse. So I would like to know if there are a best practice for this?
Well HTML (and this is the user interface you see) follows a tab index navigation that you follow with "tab" and "shift+tab". Anything else is a short cut for which you use mnemonics (as you already do) or shortcuts (explained in http://one-size-doesnt-fit-all.blogspot.dk/2010/11/adf-ui-shell-supporting-global-hotkeys.html). There is a distinction to make between non-web environments (which I think you and your users have abackground in) and client desktop environments. Browsers block some keyboard functionality for their own purpose. So you may have to find a list of keys first that work across browsers. Unlike desktop clients, which allow you to "press a button" without the button to take focus, this cannot be done on the web. So you need to be clever here, avoiding buttons at all.
The following paper is about JavaScript in ADF and explains the basics for what Chris Muir explains in : http://one-size-doesnt-fit-all.blogspot.dk/2010/11/adf-ui-shell-supporting-global-hotkeys.html
http://www.oracle.com/technetwork/developer-tools/jdev/1-2011-javascript-302460.pdf
It has the outline for how to register short cut keys that perform a specific action (e.g. register ctrl+d to delete the current row you are on, or press F11 to execute a query (similar to Oracle Forms frmres files)). However, be aware that this includes some code you have to write (actually quite some code to be honest).
http://www.oracle.com/technetwork/developer-tools/adf/learnmore/79-global-template-button-strategy-360139.pdf (are there an example implementation?), or
http://one-size-doesnt-fit-all.blogspot.dk/2010/11/adf-ui-shell-supporting-global-hotkeys.html
Actually these are implementations as they come with example code for you to use and customize, do they? So what is this question asking for more ? Also note that global buttons don't quite have anything in common with the question you asked. I assume you want to see it as an implementation of the Forms toolbar that operates on the form or table the focus is in. This however does not work for the web as there is nothing that keeps track of which component has a focus and to what iterator (data block) it belongs. This would involve even more coding (though possibly doable)
Frank

Best Practice for Deploying ADF application

I am tasked with developing a best or prefered practice of feploying a large ADF application. Background: we are in the process of redeveloping a UI for a large system. We have broken the system down into susbsytems. Each of these susbsystems UI will be a ADF aaplicaion(?). This is a move from a MS .Net front end. The backend (Batch processes etc) is being dveloped in Java. So my question is if I have several ADF projects for each subsystem and common components that they all will use - what is the best practice to compile package and deploy? The deployment will be to weblogic server or servers(Cluster).
We have a team of at least 40 -50 developers worldwide so we are looking for an automated build and deploy and would like to follow Oracle best practice. So far I have read Deploying ADF Applications (http://download.oracle.com/docs/cd/E15523_01/web.1111/e15470/deploy.htm#BGBJHGFH) and have followed the links. I have also look at the ADF evangalist blogs - lots of chatter about ojdeploy. My concern about ojdeploy is that dependent files are also being compiled at the same time. I expected that we want shared dependent files compiled only once (Is that a valid concern)?
So then when we build the source out of subversion (ojdeploy ? Ant? ) then what is best practice to deploy to a weblogic server (wslt admin console) - again we want it to be automated.
Thank you in advance for replies.
RK

Rule 1: Never use the "Automatically Expose UI Componentes in a New Managed Bean" option, create your bindings manually;
Rule 2: Rule 1 is always right;
Rule 3: In doubts, refer to rule 2.
You may also want to check out :
http://groups.google.com/group/adf-methodology
And :
http://www.oracle.com/technology/products/jdev/collateral/4gl/papers/Introduction_Best_Practices.pdf

Jdev101304 SU5 - ADF Faces - Web app deployment best practice|configuration

Hi Everybody:
1.- We have several web applications that provides a service/product used for public administration purposes.
2.- the apps are using adf faces adf bc.
2.- All of the apps are participating on javaSSO.
3.- The web apps are deployed in ondemand servers.
4.- We have notice, that with the increase of users on this dates, the sessions created by the middle tier in the database, are staying inactive but never destroyed or removed.
5.- Even when we only sing into the apps using javasso an perform no transacctions (like inserting or deleting something), we query the v$sesisons in the database, and the number of inactive sessions is always increasing, until the server colapse.
So, we want to know, if this is an issue of the configurations made on the Application Module's properties. And we want to know if there are some "best practices" that you could provide us to configure a web application and avoid this behavior.
The only configurations that we found recomended for web apps is set the jbo.locking.mode to optimistic, but this doesn't correct the "increasing inactive sessions" problem.
Please help us to get some documentation or another resource to correct configure our apps.
Thnks in advance.
Edited by: alopez on Jan 8, 2009 12:27 PM

hi alopez
Maybe this can help, "Understanding Application Module Pooling Concepts and Configuration Parameters"
see http://www.oracle.com/technology/products/jdev/tips/muench/ampooling/index.html
success
Jan Vervecken

Best practice to keep on top of Binding in ADF?

Hello,
Today I had to change an adf table in my jsf page because I switched to a different view object and I tought I would be easier for a beginner like me to remove the adf table and add it again with the new binding automatically generated by the IDE.
This part work but I have to say that in that table (read only table) I had a fillter with a select on choice that was binding to a different view. Of course I lost this filter when I remove the table but I had a backup of the previous jsf page so I added it again manually the one choice filter with a text editor. Worked good too but when I ran the page the one choice list was empty. Then I added to go to the binding section of the page and create a tree binding which create a iterator to link the binding to the data control for the data used by this one choice filter.
So I conclluded that Jdeveloper remove the binding information when you remove in the jsp page the only component that used it. Could you confirm this? My understand is that when I removed my adf table I lost also some of the binding it was using.
I added the binding tree in the binding section and it is working again. But I would like to get some best practices to deal with the binding in the ADF. I have the feeling to I could get lost quicky there and wondering why something is not working. How to keep on top of the binding?
Stephane

In addition to vinod let me pint out, that jdev automatically removes bindings from the pagedef whenever you remove a tag or component from the page using the view, the structure panel or the property inspector. Only removing a component Udolf the source view prevents this.
This is not a bug, it's a feature. It helps to keep the pagedef small and clean. Beleave me, if your pagedef gets massed up, you'll get errors you don't connect to wrong bindings.
So of you keep this in mind, it should not be a problem.
Timo

What is the best practice for Enumeration for ADF?

Dear All,
What is the best practice for Enumeration for ADF?
I need to add enumeration to my application. ex: Gender, Marital Status.
How to provide? Custom Declarative Components or are there any other way?
Thank you.
Erdenebayar

Hi ?
How to create Static VO and assign static values for the fields?
if you can, then decide the matter.
thank you
Edited by: Luuya on Mar 23, 2011 1:34 AM

ADF Faces : session timeout best practice

hi
I made these small modifications to the web.xml file in the SRDemoSample application:
(a) I changed the login-config from this ...
<login-config>
    <auth-method>FORM</auth-method>
    <form-login-config>
      <form-login-page>infrastructure/SRLogin.jspx</form-login-page>
      <form-error-page>infrastructure/SRLogin.jspx</form-error-page>
    </form-login-config>
</login-config>... to this
<login-config>
    <auth-method>BASIC</auth-method>
</login-config>(b) I changed the session-timeout to 1 minute.
<session-config>
    <session-timeout>1</session-timeout>
</session-config>Please consider this scenario:
(1) Run the UserInterface project of the SRDemoSample application in JDeveloper.
(2) Authenticate using "sking" and password "welcome".
(3) Click on the "My Service Requests" tab.
(4) Click on a "Request Id" like "111". You should see a detail page titled "Service Request Information for SR # 111" that shows detail data on the service request.
(5) Wait for at least one minute for the session to timeout.
(6) Click on the "My Service Requests" tab again. I see the same detail page as in (4), now titled "Service Request Information for SR #" and not showing any detail data.
question
What is the best practice to detect such session timeouts and handle them in a user friendly way in an ADF Faces application?
thanks
Jan Vervecken

Hi,
no. Here's the content copied from a word doc:
A frequent question on the JDeveloper OTN forum, and also one that has been asked by customers directly, is how to detect and graceful handle user session expiry due to user inactivity.
The problem of user inactivity is that there is no way in JavaEE for the server to call the client when the session has expired. Though you could use JavaScript on the client display to count
down the session timeout, eventually showing an alert or redirecting the browser, this goes with a lot of overhead. The main concern raised against unhandled session invalidation due to user
inactivity is that the next user request leads to unpredictable results and errors messages. Because all information stored in the user session get lost upon session expiry, you can't recover the
session and need to start over again. The solution to this problem is a servlet filter that works on top of the Faces servlet. The web.xml file would have the servlet configured as follows
1.     <filter>
2.         <filter-name>ApplicationSessionExpiryFilter</filter-name>
3.         <filter-class>
4.             adf.sample.ApplicationSessionExpiryFilter
5.         </filter-class>
6.         <init-param>
7.             <param-name>SessionTimeoutRedirect</param-name>
8.             <param-value>SessionHasExpired.jspx</param-value>
9.         </init-param>
10.     </filter>
This configures the "ApplicationSessionExpiryFilter" servlet with an initialization parameter for the administrator to configure the page that the filter redirects the request to. In this
example, the page is a simple JSP page that only prints a message so the user knows what has happened. Further in the web.xml file, the filter is assigned to the JavaServer Faces
servlet as follows
1.     <filter-mapping>
2.             <filter-name>ApplicationSessionExpiryFilter</filter-name>
3.             <servlet-name>Faces Servlet</servlet-name>
4.         </filter-mapping>
The Servlet filter code compares the session Id of the request with the current session Id. This nicely handles the issue of the JavaEE container implicitly creating a new user session for the incoming request.
The only special case to be handled is where the incoming request doesn't have an associated session ID. This is the case for the initial application request.
1.     package adf.sample;
2.
3.     import java.io.IOException;
4.
5.     import javax.servlet.Filter;
6.     import javax.servlet.FilterChain;
7.     import javax.servlet.FilterConfig;
8.     import javax.servlet.ServletException;
9.     import javax.servlet.ServletRequest;
10.     import javax.servlet.ServletResponse;
11.     import javax.servlet.http.HttpServletRequest;
12.     import javax.servlet.http.HttpServletResponse;
13.
14.
15.     public class ApplicationSessionExpiryFilter implements Filter {
16.         private FilterConfig _filterConfig = null;
17.
18.         public void init(FilterConfig filterConfig) throws ServletException {
19.             _filterConfig = filterConfig;
20.         }
21.
22.         public void destroy() {
23.             _filterConfig = null;
24.         }
25.
26.         public void doFilter(ServletRequest request, ServletResponse response,
27.                              FilterChain chain) throws IOException, ServletException {
28.
29.
30.             String requestedSession =   ((HttpServletRequest)request).getRequestedSessionId();
31.             String currentWebSession = ((HttpServletRequest)request).getSession().getId();
32.
33.             boolean sessionOk = currentWebSession.equalsIgnoreCase(requestedSession);
34.
35.             // if the requested session is null then this is the first application
36.             // request and "false" is acceptable
37.
38.             if (!sessionOk && requestedSession != null){
39.                 // the session has expired or renewed. Redirect request
40.                 ((HttpServletResponse) response).sendRedirect(_filterConfig.getInitParameter("SessionTimeoutRedirect"));
41.             }
42.             else{
43.                 chain.doFilter(request, response);
44.             }
45.         }
46.
47.     }
This servlet filter works pretty well, except for sessions that are expired because of active session invalidation e.g. when nuking the session to log out of container managed authentication. In this case my
recommendation is to extend line 39 to also include a check if security is required. This can be through another initialization parameter that holds the name of a page that the request is redirected to upon logout.
In this case you don't redirect the request to the error page but continue with a newly created session.
Ps.: For testing and development, set the following parameter in web.xml to 1 so you don't have to wait 35 minutes
1.     <session-config>
2.         <session-timeout>1</session-timeout>
3.     </session-config> Frank
Edited by: Frank Nimphius on Jun 9, 2011 8:19 AM

Ask Best Practice How to Work Together with ADF

Hi,
I'm using JDev 10.1.3.3 with CVS. Could someone show me best practice to work together in team to build an application using ADF Faces, EBJ and TopLink.
I've read ADF Developer guide about collaboration with CVS, but still doesn't give enough best practice for me.
For example, let say i have Oracle DB 11g as database and my application have 3 module (finance, sales and callcenter). The 3 module will access same database, schema and tablespace.
I have 5 developer in team, now my problem is sometimes DataModel can make conflict with the other because we edit the file together (toplink.mwp), UserInterface also can make a conflict with file FacesConfig.xml, databindings.cpx etc.
Please share some best practice.

There's a new set of articles about team development with Subversion that you should probably read here:
http://www.oracle.com/technology/pub/articles/adf-development-essentials/index.html

Large ADF Applications - Best Practice

Hi
We have a single ADF project (one model, one view/controller) with the following model components:
68 AMs
387 VOs
175 EOs
This project is ever expanding, and we are suffering some well-known performance problems when open JDeveloper or open the view/controller project.
Are there any best-practice guidelines on how to structure your ADF projects?
e.g. what is the maximum recommended number of AMs/VOs/EOs in a single project?
We have kept everything in a single project after some advice from Oracle to help us to re-use common modules easily.
We use JDeveloper v10.1.3 and use JHeadstart v10.1.3 SU 1 to generate our view/controller layer, using multiple faces-config files.
Thanks
Denis

Hi Denis,
We have exactly the same problem in expanding our application but we have a single AM and less EOs, VOs than you right now. There are some threads discussing this issue but I haven't found a complete and standard solution yet. The only thing I know is that almost every thing can be segmented in ADF like projects, application module, faces-config.xml, ...
Another thing which is very important is that segmenting an application is a tradeoff, it has some advantaes but problems in SCM, security, ...
S/\EE|)

Could you point me to a ADF development best practice recommendation doc

Could you point me to a ADF development best practice recommendations document for ADF 11g that could be used as a guideline for developers.
Naming conventions
Usage of Models, Implement validation in BC...
Best practices for the UI with ADF Faces...
Recommendations.
Thanks

The right place to start :
http://groups.google.com/group/adf-methodology
Also you may take a look at this:
http://www.oracle.com/technology/products/jdev/collateral/4gl/papers/Introduction_Best_Practices.pdf
Also
http://groups.google.com/group/adf-methodology/browse_thread/thread/e7c9d557ab03b1cb?hl=en#
There're some interesting tips there.

Best Practices for BI, ADF and Oracle Forms installations on Weblogic

Hi, I'm researching options on upgrading to Oracle 11g Middleware. My company currently has Oracle Forms 10g running on Oracle Application Server.
We are interested in using Oracle Forms 11g, ADF and Jdeveloper, and Business Intelligence with Oracle's Weblogic 10.3.5.
Is there any whitepapers or documentation on best practices for installing alll of these components together?
For instance, can ADF ( with JSF 2.x ) be installed in the same domain as Oracle Forms 11g but use different managed servers?
Will Business Intelligence need to be in a seperate Oracle Home with it's own weblogic installation? I spend a lot of time trying to get the JSF upgraded to 2.x in the Business Intelligence installation and could not get it to work.
I know it's a pretty broad question but thank you for any direction on this.

Thanx for the reply! I read through the documents and they are very good at explaining how to install the different components individually. I still can't find much on installing them together. I hope it's not just going to be a trial and error thing.
So far I've installed done the following successfully:
Installed 10.3.5 weblogic
Forms and Reports 11g on top of 10.3.5
I've created an additional managed server for our ADF applications.
My next step is upgrading the JSF to 2.x. I would have to stage patches 12917525 and 12979653. I'm afraid it will break the forms and reports though. Any ideas?

Technical documentation for ADF projects - how to and best practices

Hi,
I have a question how to create technical documentation for ADF project expecialy ADF BC and ADF Faces. Is there any tool or JDev plugin for that purpose? What informations should contains documentation for that project, any principles ?Has anybody any experienece. Are there something like documentation best practices for ADF projects? E.g. how to create documentation for bussiness components.
Kuba

I'm not sure there is "best practices" but some of the things that can help people understand are:
An ADF BC diagram - this will describe all your ADF BC objects - just drag your components into a new empty diagram
A JSF page flow - to show how pages are called.
Java class diagram - for Java code that is not in the above two
One more thing to consider - since ADF BC, JSF page flow and JSPX pages are all XML based - you could write XSL files that will actually transform them into any type of documentation you want.

ADF Best Practice

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