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Showing posts with label FacesContext. Show all posts
Showing posts with label FacesContext. Show all posts

Tuesday 9 May 2017

Check for dirty (Uncommitted) data of current view port (page) on a button click or any event in ADF

Sometimes we need to check for uncommitted data on page and perform actions according to that, Suppose there is a button to navigate to another page but only if there is no uncommitted data in current page
We can use uncommitted data warning property of af:document to show an alert dialog but in that way, we can't execute our custom logic

Previously I have posted about checking dirty data of a transactional data control but in that, we need to check that for each data control separately that is rendering on page

Tuesday 7 July 2015

Create shortcut of page on a button click in Oracle ADF using JShortcut library (For windows)

This post is about a small trick to create shortcut file from ADF application
Actually this type of requirement doesn't come in picture when you are working in web application , for web application bookmarks replaces desktop shortcut
Still if you want to do this then you can follow approach mentioned in this post

Creating shortcut programmatically requires access of operating system but you need not to worry about that
There is a java library to do this for you - JShortcut
Download jar files from here..

1. Now first step is to create a fusion web application and add this jar to viewController project

2. Create a page (independent runnable like jspx or jsf not fragments) and drop a button in that
3. Create a managed bean to handle button's action
    Here we will make use of JShellLink class of this library

See what docs says about this -

Provide access to shortcuts (shell links) from Java. The native library (jshortcut.dll) is loaded when JShellLink is first loaded. By default, JShellLink first looks for the native library in the PATH, using System.loadLibrary. If the native library is not found in the PATH, JShellLink then looks through each directory in the CLASSPATH (as determined by the value of the system property java.class.path). If an entry in the CLASSPATH is a jar file, then JShellLink looks for the native library in the directory containing that jar file. The application can override this behavior and force JShellLink to look for the native library in a specific directory by setting the system property JSHORTCUT_HOME to point to that directory. This property must be set before the JShellLink class is loaded. This makes it possible to use this library from a self-extracting jar file. 

4. Get the url of current page
 How to get url of current page in ADF Application?
 (See button action listener code for this )
5. Check code written in managed bean-

import javax.faces.context.FacesContext;
import javax.faces.event.ActionEvent;

import javax.servlet.http.HttpServletRequest;

import net.jimmc.jshortcut.JShellLink;

import oracle.adf.controller.ControllerContext;

    JShellLink link;
    String filePath;

    /**Button action listener to create shortcurt of current page on desktop
     * @param actionEvent
    public void createSortcutonDpAction(ActionEvent actionEvent) {
        try {
            //Get url of current ViewPort
            String viewId = ControllerContext.getInstance().getCurrentViewPort().getViewId();
            String viewUrl = ControllerContext.getInstance().getGlobalViewActivityURL(viewId);

            //Get Server Name and Port
            FacesContext fctx = FacesContext.getCurrentInstance();
            HttpServletRequest hsrequest = (HttpServletRequest) fctx.getExternalContext().getRequest();

            String serverName = hsrequest.getServerName();
            int serverPort = hsrequest.getServerPort();

            String runnableUrl = "http://" + serverName + ":" + serverPort + viewUrl;

            //Create Object of shortcurt link
            link = new JShellLink();
            filePath = JShellLink.getDirectory("") + runnableUrl;
            //Set Where you want to create shortcut
            //Set shortcut file name
            link.setName("Programmatically Created Shortcut");
            //Use ico file to use as shortcut icon

        } catch (Exception ex) {


6.  All done :) , run and check application
Click on button and check on desktop

Same code can be used to create shortcut from pure java application
Cheers :) Happy Learning

Wednesday 31 October 2012

Passing parameter in XML Resource and Use it in Managed Bean, Using parameterised Resource Bundle in ADF

If we are developing an Fusion Web application and we are thinking about Multilingual application , then the best option i came to know is to use Resource Bundle properties of ADF . When we use resource bundle we have to use labels of Fields and Validation message or any kind of other custom message from a XML file as Resource.xml.
So first you should know that how to configure resource bundle in an ADF Application and there are plenty of posts about configuring Properties or List ResourceBundle.

In this post i will show you that how to pass parameter in XML or how to use Parametrized resource .

Suppose i  have a xml file for ResourceBundle reference Resource.xml--

  1. <?xml version="1.0" encoding="windows-1252" ?>
  2. <bundle>
  3. <label>
  4.     <key>MessageCheck</key>
  5.     <value>Only %s %s %s %s %s allowed</value>
  6.  </label>
  7. </bundle>

and now i use it in managed bean to show a custom message and replace its parameters %s with any desired value then we code like this

  1. //To get String from XML key, resolvElDC is a method to resolve expression language
  2. String message = resolvElDC("#{bundle['MessageCheck']}").toString();
  3. //here replace parameter(%s) in string message with your values
  4. String saveMsg = message.format(message, ",", "/", "@", "_", "%");
  5. //Show FacesMessage
  6. FacesMessage msg = new FacesMessage(saveMsg);
  7. msg.setSeverity(FacesMessage.SEVERITY_INFO);
  8. FacesContext ctx = FacesContext.getCurrentInstance();
  9. ctx.addMessage(null, msg);
  10. // Code for resolvElDC method
  11. public Object resolvElDC(String data) {
  12.     FacesContext fc = FacesContext.getCurrentInstance();
  13.     Application app = fc.getApplication();
  14.     ExpressionFactory elFactory = app.getExpressionFactory();
  15.     ELContext elContext = fc.getELContext();
  16.     ValueExpression valueExp = elFactory.createValueExpression(elContext, data, Object.class);
  17.     return valueExp.getValue(elContext);
  18. }

Now run your code and see the updated message- Only %s %s %s %s%s allowed is now
FacesMessage Oracle ADF

Monday 22 October 2012

Refresh Page in Oracle ADF by Java Code, Set partial trigger programmatically

Some times we need to refresh whole page , then we can use this managed bean code to refresh whole page in ADF.

import javax.faces.application.ViewHandler;
import javax.faces.component.UIViewRoot;
import javax.faces.context.FacesContext;

//Method to reload page
    protected void refreshPage() {

        FacesContext fctx = FacesContext.getCurrentInstance();
        String page = fctx.getViewRoot().getViewId();
        ViewHandler ViewH = fctx.getApplication().getViewHandler();
        UIViewRoot UIV = ViewH.createView(fctx, page);


Partially refresh any UIComponent, Set partial trigger programmatically-



Tuesday 16 October 2012

ADF Basics: Show FacesMessage in Oracle ADF

How to use FacesMessage in ADF

FacesMessage is used to show confirmation, warning, information .In this tutorial, you will see that how to use FacesMessage to show any information, warning or any error. Suppose you want to show a confirmation when you save your records, here we use FacesMessage.

Managed Bean Code to use FacesMessage(Information)-

      FacesMessage Message = new FacesMessage("Record Saved Successfully!");   
      FacesContext fc = FacesContext.getCurrentInstance();   
      fc.addMessage(null, Message);   

To use for Error and Warning just change FacesMessage.SEVERITY_INFO to SEVERITY_ERROR or SEVERITY_WARN.
It will look like this

FacesMessage in Oracle ADF

You can change your Message accordingly

Monday 15 October 2012

ADF Basics: Show inline Message in Oracle ADF

When we use any technology sometimes we need to show an alert message or warning or confirmation.
In Oracle ADF we use Faces Message same as JSF.
In this tutorial I am showing you that how to implement inline FacesMessage .

Those who are familiar with Oracle ADF can create basic architecture of MVC.
So follow these steps

  • Create a Fusion Web Application in Jdeveloper(IDE)
  • Now in ViewController create new Page.
  • Simply drag a CommandButton from Component Palette to page
  • and Write this code on button

public void showMessageButton(ActionEvent actionEvent) {
 FacesMessage msg=new FacesMessage("This is an inline FacesMessage");
 FacesContext fctx=FacesContext.getCurrentInstance();
 fctx.addMessage(null, msg);
  • It will work as FacesMessage
  • Now drag a af:messages component in page from Component Palette

    select af:message from component pallette

  • Select af:messages and go to property inspector and set Inline-true

    Set inline true for af:message

  • Now run your page and click on button , it will look like this

    Inline Error Message Oracle ADF

  • This is how we show inline alert in Oracle ADF