Wednesday Feb 05, 2014

How to solve "apapt.exe file missing" error when uprading ADF Mobile

Investigating the issue in which a missing aapt.exe file is reported by JDeveloper after upgrading to the latest ADF Mobile patch I found a bug that fixes a previous problem which was that Google moved the executable file. As a response ADF Mobile now looks in the Android build path for the executable and also allows you to select the build tools location in the ADF Mobile preferences if the executable cannot be found by JDeveloper. If you are on an old version of the Android SDK that does have the aapt.exe file in its original location (the one before Google moved it) you will see the error mentioned in the title of this post.

 You can then use the ADF Mobile preferences to search for the build tool, or in addition, use it as a reminder to launch the Android SDK Manager and upgrade to a recent version of the SDK.

Frank

Monday Feb 03, 2014

Setting-up ADF Mobile for Android using JDeveloper 11.1.2.4 with the latest ADF Mobile patch

Installing the latest ADF Mobile patch for JDeveloper 11.1.2.4 prevented deployment of mobile applications with some weird error messages. I concluded that its probably my Android SDK that needed renewal. To go for a clean approach, I deleted my Android SDK and downloaded the latest and greatest from the Web. Since my last SDK installation, Google has changed the Android directory structure quite a bit. For those struggling, here is what I configured in the Android SDK and JDeveloper.

 First observation, to install the gcm.jar file (Google Cloud Messaging) you have to check the "Obsolete" checkbox in the SDK Manager.

=============================================

In the JDeveloper preferences, I provided the following entries

=============================================

Adroid SDK location
--------------------------------------
<drive>:\android-home\sdk

Android Platform Location
--------------------------------------
<drive>:\android-home\sdk\platforms\android-19

Android Build Tools Location
--------------------------------------
<drive>:\android-home\sdk\build-tools\19.0.1  (I installed v. 19 of the SDK)

The "<drive>" in my case was D:\ on Windows (funny that on the Apple Mac, which I use for writing this blog the backslash is shift+alt+7)

Frank

Monday Dec 17, 2012

Accessing ADF Faces components that are read-only from JavaScript

Almost as a note to myself and to justify the time I spent on analyzing aproblem, a quick note on what to watch out for when working trying to access read-only ADF Faces components from JavaScript. 

Those who tried JavaScript in ADF Faces probably know that you need to ensure the ADF Faces component  is represented by a JavaScript object on the client. You do this either implicitly by adding an af:clientListener component (in case you want to listen for a component event) or explicitly by setting the ADF Faces component clientComponent property to true.

For the use case I looked at in JDeveloper 11g R1 (11.1.1.7) I needed to make an output text component clickable to call a JavaScript function in response. Though I added the af:clientListener tag to the component I recognized that it also needed the clientComponent property set to true.

Though I remember this as not being required in 11.1.1.6, I like the new behavior as it helps preventing read-only components from firing client side events unless you tell it to do so by setting the clientComponent property to true.

Note: As the time of writing, JDeveloper 11.1.1.7 is not publicly available and I put the note in this blog as a reminder in case you ever hit a similar challenge so you know what to do.


Wednesday Sep 19, 2012

Oracle ADF Coverage at OOW

Below is the schedule for all ADF related sessions at a glance. Note the Meet and greet session added for Wednesday Octiber 3rd from 4.30 pm to 5:30.

Oracle ADF and Fusion Development

General Session



Time Title Location
10:45 AM - 11:45 AM General Session: The Future of Development for Oracle Fusion—From Desktop to Mobile to Cloud Marriott Marquis - Salon 8
12:15 PM - 1:15 PM General Session: Extend Oracle Fusion Apps to Tablets/Smartphones with Oracle Mobile Technology Moscone West - 3014
1:45 PM - 2:45 PM General Session: Extend Oracle Applications to Mobile Devices with Oracle’s Mobile Technologies Moscone West - 3002/3004
4:45 PM - 5:45 PM General Session: Building Mobile Applications with Oracle Cloud Moscone West - 2002/2004

Conference Session



Time Title Location
12:15 PM - 1:15 PM Understanding Oracle ADF and Its Role in Oracle Fusion Moscone South - 306
1:45 PM - 2:45 PM Building Performant Oracle ADF Business Components to Meet Tomorrow’s Needs Marriott Marquis - Golden Gate C3
3:15 PM - 4:15 PM End-to-End Oracle ADF Development in Eclipse Marriott Marquis - Golden Gate C3
4:45 PM - 5:45 PM Classic Mistakes with Oracle Application Development Framework Marriott Marquis - Salon 7


Time Title Location
10:15 AM - 11:15 AM One Size Doesn’t Fit All: Oracle ADF Architecture Fundamentals Marriott Marquis - Golden Gate C2
10:15 AM - 11:15 AM Oracle Business Process Management/Oracle ADF Integration Best Practices Marriott Marquis - Golden Gate C3
11:45 AM - 12:45 PM Mobile-Enable Oracle Fusion Middleware and Enterprise Applications with Oracle ADF Moscone South - 306
11:45 AM - 12:45 PM Secrets of Successful Projects with Oracle Application Development Framework Marriott Marquis - Golden Gate C2
1:15 PM - 2:15 PM Develop On-Device iPhone and iPad Apps Without Writing Any Objective-C Code Marriott Marquis - Golden Gate C2
1:15 PM - 2:15 PM BPM, SOA, and Oracle ADF Combined: Patterns Learned from Oracle Fusion Applications Moscone West - 3003
1:15 PM - 2:15 PM The Future of Forms Is … Oracle Forms (and Friends) Moscone South - 306
5:00 PM - 6:00 PM Best Practices for Integrating SOAP and REST Service into Oracle ADF Marriott Marquis - Golden Gate C2


Time Title Location
10:15 AM - 11:15 AM Mobile Apps for Oracle E-Business Suite with Oracle ADF Mobile and Oracle SOA Suite Moscone West - 3001
10:15 AM - 11:15 AM Visualize This! Best Practices for Data Visualization in Desktop and Mobile Apps Marriott Marquis - Golden Gate C3
10:15 AM - 11:15 AM Set Up Your Oracle ADF Project and Development Team for Productivity: Seven Essential Tips Marriott Marquis - Golden Gate C2
11:45 AM - 12:45 PM How to Migrate an Oracle Forms Application to Oracle ADF Marriott Marquis - Golden Gate C2
1:15 PM - 2:15 PM Oracle ADF: Lessons Learned in Real-World Implementations Moscone South - 309
3:30 PM - 4:30 PM Oracle ADF Implementations Around the Globe: Best Practices Marriott Marquis - Golden Gate C2
3:30 PM - 4:30 PM Oracle Developer Cloud Services Marriott Marquis - Salon 7
4:30 PM - 5:30 PM Oracle JDeveloper and Oracle ADF: What’s New Hilton San Francisco - Continental Ballroom 5
5:00 PM - 6:00 PM Mobile Solutions for Oracle E-Business Suite Applications: Technical Insight Moscone West - 2020
5:00 PM - 6:00 PM Extending Social into Enterprise Applications and Business Processes Marriott Marquis - Golden Gate C3
5:00 PM - 6:00 PM The Tie That Binds: An Introduction to Oracle ADF Bindings Marriott Marquis - Golden Gate C2


Time Title Location
11:15 AM - 12:15 PM Using Oracle ADF with Oracle E-Business Suite: The Full Integration View Moscone West - 3003
11:15 AM - 12:15 PM Deep Dive into Oracle ADF: Advanced Techniques Marriott Marquis - Golden Gate C2
12:45 PM - 1:45 PM Monitor, Analyze, and Troubleshoot Your Oracle ADF Application Marriott Marquis - Golden Gate C2
2:15 PM - 3:15 PM Oracle WebCenter Portal: Creating and Using Content Presenter Templates Marriott Marquis - Golden Gate C2

HOL (Hands-on Lab)



Time Title Location
10:45 AM - 11:45 AM Developing Applications for Mobile iOS and Android Devices with Oracle ADF Mobile: Hands-on Lab Marriott Marquis - Salon 10A
1:45 PM - 2:45 PM Build Mobile Applications for Oracle E-Business Suite Marriott Marquis - Salon 10A
3:15 PM - 4:15 PM Developing Applications for Mobile iOS and Android Devices with Oracle ADF Mobile: Hands-on Lab Marriott Marquis - Salon 10A
3:15 PM - 4:15 PM Introduction to Oracle ADF: Hands-on Lab Marriott Marquis - Salon 3/4
4:45 PM - 5:45 PM Application Lifecycle Management with Oracle JDeveloper: Hands-on Lab Marriott Marquis - Salon 3/4


Time Title Location
10:15 AM - 11:15 AM Developing Applications for Mobile iOS and Android Devices with Oracle ADF Mobile: Hands-on Lab Marriott Marquis - Salon 10A
5:00 PM - 6:00 PM Developing Applications for Mobile iOS and Android Devices with Oracle ADF Mobile: Hands-on Lab Marriott Marquis - Salon 10A


Time Title Location
10:15 AM - 11:15 AM Introduction to Oracle ADF: Hands-on Lab Marriott Marquis - Salon 3/4
11:45 AM - 12:45 PM Developing Applications for Mobile iOS and Android Devices with Oracle ADF Mobile: Hands-on Lab Marriott Marquis - Salon 10A
1:15 PM - 2:15 PM Build Mobile Applications for Oracle E-Business Suite Marriott Marquis - Salon 10A
3:30 PM - 4:30 PM Developing Applications for Mobile iOS and Android Devices with Oracle ADF Mobile: Hands-on Lab Marriott Marquis - Salon 10A
5:00 PM - 6:00 PM Developing Applications for Mobile iOS and Android Devices with Oracle ADF Mobile: Hands-on Lab Marriott Marquis - Salon 10A


Time Title Location
11:15 AM - 12:15 PM Developing Applications for Mobile iOS and Android Devices with Oracle ADF Mobile: Hands-on Lab Marriott Marquis - Salon 10A
11:15 AM - 12:15 PM Introduction to Oracle ADF: Hands-on Lab Marriott Marquis - Salon 3/4
12:45 PM - 1:45 PM Oracle ADF for Java EE Developers with Oracle Enterprise Pack for Eclipse Marriott Marquis - Salon 3/4

BOF (Birds-of-a-Feather)



Time Title Location
6:15 PM - 7:00 PM How to Get Started with Oracle ADF Marriott Marquis - Club Room
7:15 PM - 8:00 PM Building Next-Generation Applications with Oracle ADF and Oracle BPM Marriott Marquis - Golden Gate C3
7:15 PM - 8:00 PM The Future of Oracle Forms: Upgrade, Modernize, or Migrate? Marriott Marquis - Golden Gate C2
7:15 PM - 8:00 PM Oracle ADF Faces: One Site for Many Devices Marriott Marquis - Golden Gate C1 -

User Group Forum (Sunday Only)



Time Title Location
9:00 AM - 10:00 AM Oracle ADF Immersion: How an Oracle Forms Developer Immersed Himself in the Oracle ADF World Moscone South - 305
10:15 AM - 11:15 AM Deploy with Joy: Using Hudson to Build and Deploy Your Oracle ADF Applications Moscone South - 305
11:30 AM - 12:30 PM ADF EMG User Group: A Peek into the Oracle ADF Architecture of Oracle Fusion Applications Moscone South - 305
12:45 PM - 3:45 PM ADF EMG User Group: Oracle Fusion Middleware Live Application Development Demo Moscone South - 305
3:15 PM - 4:15 PM Mobile Development with Oracle JDeveloper and Oracle ADF Moscone West - 2010

Demos

Demo Location
Developer Moscone North, Upper Lobby - N-002
Oracle ADF Mobile Development Moscone North, Upper Lobby - N-001
Oracle Eclipse Projects Hilton San Francisco, Grand Ballroom - HHJ-008
Oracle Enterprise Pack for Eclipse Moscone South, Right - S-208
Oracle JDeveloper and Oracle ADF Moscone South, Right - S-207
Exhibits
0
Exhibitor Location
Accenture Moscone South - 1813
Moscone South - 2221
Infosys Moscone South - 1701
Moscone South - SMR-005
Innowave Technology Moscone South - 2309
ODTUG Moscone West, Level 2 Lobby - Kiosk in the User Groups Pavilion

Oracle ADF Developers Meet Up

Time Activity Location
4:30 PM - 5:30 PM Stop by the OTN Lounge and meet other Oracle ADF & Fusion developers as well as product managers and engineers who work on Oracle ADF, ADF Mobile and ADF Essentials. Feedback and questions welcome, or simply stop by and say ‘hi!’ and enjoy free beer. OTN Lounge

Tuesday Jul 31, 2012

Warning: java.lang.IllegalArgumentException: The file .jsff is not a source file

Randomly I experienced the following error when working with JSFF page fragments in JDeveloper 11g R2 (11.1.2.2):

Warning: java.lang.IllegalArgumentException: The file file:<directory listed here>\DepartmentsView.jsff is not a source file

This happened when I compiled the project. As it seems the compiler treats JSFF page fragments as Java source files. This issue has been reported as bug 12732652 for applications using Facelets as the page source holder. The fix for both cases, JSF pages as JSPX and Facelets, is to edit the web.xml file as follows

  <!-- 
  * WORK AROUND
  * randomly, when editing files, compilation fails with an illegal argument exception
  * java.lang.IllegalArgumentException: The file <file name> .jsff is not a source file
  * To avoid this error, which initially has been reported as bug 12732652 for Facelets
  * I added the jsp-property-group entry below
 -->
 <jsp-config>
  <jsp-property-group> 
    <url-pattern>*.jsff</url-pattern>
    <is-xml>true</is-xml>
   </jsp-property-group>
  </jsp-config>
 <!-- 
  * END WORK AROUND
  -->

Just add the above snippet before the " <mime-mapping>" entry in web.xml. At least for me, this did the trick

Thursday Jun 21, 2012

When JDeveloper IDE doesn't render the visual editor

Though with Oracle JDeveloper 11g the problem of the IDE not rendering JSF pages properly in the visual editor has become rare, there always is a way for the creative to break IDE functionality. A possible reason for the visual editor in JDeveloper to break is a failed dependency reference, which often is in a custom JSF PhaseListener configured in the faces-config.xml file. To avoid this from happening, surround the code in your PhaseListener class with the following statement (for example in the afterPhase method)

public void afterPhase(PhaseEvent phaseEvent) {
  if(!ADFContext.getCurrent().isDesigntime()){
    ... listener code here ...
  }
}

The reason why the visual editor in Oracle JDeveloper fails rendering the WYSIWYG view has to do with how the live preview is created. To produce the visual display of a view, JDeveloper actually runs the ADF Faces view in JSF, which then also invokes defined PhaseListeners. With the code above, you check whether the PhaseListener code is executed at runtime or design time.If it is executed in design time, you ignore all calls to external resources that are not available at design time.

Tuesday Nov 22, 2011

How-to read data from selected tree node

By default, the SelectionListener property of an ADF bound tree points to the makeCurrent method of the FacesCtrlHierBinding class in ADF to synchronize the current row in the ADF binding layer with the selected tree node. To customize the selection behavior, or just to read the selected node value in Java, you override the default configuration with an EL string pointing to a managed bean method property. In the following I show how you change the selection listener while preserving the default ADF selection behavior.

To change the SelectionListener, select the tree component in the Structure Window and open the Oracle JDeveloper Property Inspector. From the context menu, select the Edit option to create a new listener method in a new or an existing managed bean.

For this example, I created a new managed bean. On tree node select, the managed bean code prints the selected tree node value(s)


import java.util.List;

import javax.el.ELContext;
import javax.el.ExpressionFactory;
import javax.el.MethodExpression;
import javax.faces.application.Application;
import javax.faces.context.FacesContext;

import java.util.Iterator;  
import oracle.adf.view.rich.component.rich.data.RichTree;
import oracle.jbo.Row;
import oracle.jbo.uicli.binding.JUCtrlHierBinding;
import oracle.jbo.uicli.binding.JUCtrlHierNodeBinding;
import org.apache.myfaces.trinidad.event.SelectionEvent;

import org.apache.myfaces.trinidad.model.CollectionModel;
import org.apache.myfaces.trinidad.model.RowKeySet;
import org.apache.myfaces.trinidad.model.TreeModel;  
public class TreeSampleBean {
 public TreeSampleBean() {}
 public void onTreeSelect(SelectionEvent selectionEvent) {
  //original selection listener set by ADF
  //#{bindings.allDepartments.treeModel.makeCurrent}
  String adfSelectionListener = "#{bindings.allDepartments.treeModel.makeCurrent}";
  //make sure the default selection listener functionality is 
  //preserved. you don't need to do this for multi select trees 
  //as the ADF binding only supports single current row selection  
 
  /* START PRESERVER DEFAULT ADF SELECT BEHAVIOR */
  FacesContext fctx = FacesContext.getCurrentInstance();
  Application application = fctx.getApplication();
  ELContext elCtx = fctx.getELContext();
  ExpressionFactory exprFactory = application.getExpressionFactory();
  
  MethodExpression me = null;
  me = exprFactory.createMethodExpression(elCtx, adfSelectionListener, 
                                          Object.class, newClass[]{SelectionEvent.class}); 
  me.invoke(elCtx, new Object[] { selectionEvent });  

  /* END PRESERVER DEFAULT ADF SELECT BEHAVIOR */
  RichTree tree = (RichTree)selectionEvent.getSource();
  TreeModel model = (TreeModel)tree.getValue();   
 
  //get selected nodes
  RowKeySet rowKeySet = selectionEvent.getAddedSet(); 
  Iterator rksIterator = rowKeySet.iterator(); 
  //for single select configurations,this only is called once 
  while (rksIterator.hasNext()) {
    List key = (List)rksIterator.next();
    JUCtrlHierBinding treeBinding = null;
    CollectionModel collectionModel = (CollectionModel)tree.getValue();
    treeBinding = (JUCtrlHierBinding)collectionModel.getWrappedData(); 
    JUCtrlHierNodeBinding nodeBinding = null;
    nodeBinding = treeBinding.findNodeByKeyPath(key);
    Row rw = nodeBinding.getRow();
    //print first row attribute. Note that in a tree you have to 
    //determine the node type if you want to select node attributes 
    //by name and not index 
    String rowType = rw.getStructureDef().getDefName();
  
    if(rowType.equalsIgnoreCase("DepartmentsView")){
      System.out.println("This row is a department: " +  
                         rw.getAttribute("DepartmentId"));
    }
    else if(rowType.equalsIgnoreCase("EmployeesView")){
     System.out.println("This row is an employee: " + 
                         rw.getAttribute("EmployeeId"));
    }     
    else{
      System.out.println("Huh????");  
    }
    // ... do more useful stuff here   
  }   

}

--------------------

Download JDeveloper 11.1.2.1 Sample Workspace


Thursday Nov 17, 2011

Reading train stop display names from a resource bundle

In Oracle JDeveloper 11g R1, you set the display name of a train stop of an ADF bounded task flow train model by using the Oracle JDeveloper Structure Window.

To do so

  • Double-click onto the bounded task flow configuration file (XML) located in the Application Navigator so the task flow diagram open
  • In the task flow diagram, select the view activity node for which you want to define the display name.
  • In the Structure Window., expand the view activity node and then the train-stop node therein
  • Add the display name element by using the right-click context menu on the train-stop node, selecting Insert inside train-stop > Display Name
  • Edit the Display Name value with the Property Inspector

Following the steps outlined above, you can define static display names – like "PF1" for page fragment 1 shown in the image below - for train stops to show at runtime.

In the following, I explain how you can change the static display string to a dynamic string that reads the display label from a resource bundle so train stop labels can be internationalized.

There are different strategies available for managing message bundles within an Oracle JDeveloper project. In this blog entry, I decided to build and configure the default properties file as indicated by the projects properties. To learn about the suggested file name and location, open the JDeveloper project properties (use a right mouse click on the project node in the Application Navigator and choose Project Properties.

Select the Resource Bundle node to see the suggested name and location for the default message bundle. Note that this is the resource bundle that Oracle JDeveloper would automatically create when you assign a text resource to an ADF Faces component in a page.

For the train stop display name, we need to create the message bundle manually as there is no context menu help available in Oracle JDeveloper. For this, use a right mouse click on the JDeveloper project and choose New | General | File from the menu and in the opened dialog.

Specify the message bundle file name as the name looked up before in the project properties Resource Bundle option. Also, ensure that the file is saved in a directory structure that matches the package structure shown in the Resource Bundle dialog. For example, you would save the properties file in the View Project's src > adf > sample directory if the package structure was "adf.sample" (adf.sample.ViewControllerBundle).

Edit the properties file and define key – values pairs for the train stop component. In the sample, such key value pairs are

TrainStop1=Train Stop 1
TrainStop2=Train Stop 2
TrainStop3=Train Stop 3

Next, double click the faces-config.xml file and switch the opened editor to the Overview tab. Select the Application category and press the green plus icon next to the Resource Bundle section.

Define the resource bundle Base Name as the package and properties file name, for example

adf.sample.ViewControllerBundle

Finally, define a variable name for the message bundle so the bundle can be accessed from Expression Language. For this blog example, the name is chosen as "messageBundle".

<resource-bundle>
  <base-name>adf.sample.ViewControllerBundle</base-name>
  <var>messageBundle</var>
</resource-bundle> 

Next, select the display-name element in the train stop node (similar to when creating the display name) and use the Property Inspector to change the static display string to an EL expression referencing the message bundle. For example:

#{messageBundle.TrainStop1}

At runtime, the train stops now show display names read from a message bundle (the properties file).

Wednesday Nov 09, 2011

JSF 2.0 Preemptive Navigation in ADFc of JDeveloper 11.1.2

Preemptive navigation is a new feature in JavaServer Faces 2.0 and allows runtime introspection of control flow cases for their target view.The JSF API for this is the ConfigurableNavigationHandler class that exposes the following methods

  •  getNavigationCase(FacesContext context, 
                      java.lang.String fromAction, 
                      java.lang.String outcome) 
  • getNavigationCases() – returns a Map<String, Set<NavigationCase>> that lists all available navigation cases with the viewId as the map keys

  • performNavigation(java.lang.String outcome) – Navigates to the next view based on the outcome. Developers using this method must ensure it is used during JSF InvokeApplication phase as it cannot be used any later

The NavigationCase class wraps the information defined for a navigation, including the condition (also a new feature in JSF 2.0) in which the navigation case is valid.

Preemptive navigation can be used in an application to populate redirect components, like the goLink shown below with a target view, or for redirects in a managed bean, for which developers need to know the target view. The sample below shows an ADF Faces goLink pointing to a managed bean. The managed bean returns the redirect URL for the link to follow when clicked on.

Preemptive Navigation

 The managed bean accesses the NavigationHandler defined for the JSF instance and verifies it to be an instance of ConfigurableNavigationHandler before it looks up the target viewId for the control flow case.

Note that ADFc in Oracle JDeveloper 11g R2 also supports conditional navigation, in which case developers can define an EL expression on the control flow case, using the Property Inspector, that determines when a navigation case is valid and when it is not.

Conditional navigation

Also note that Preemptive navigation fails with a NullPointer exception if the referenced control flow case is conditionally set to disabled. To handle this, the managed bean code above needs to be surrounded with a try…catch block.
About

The Oracle JDeveloper forum ranks in the Top 5 of the most active forums on the Oracle Technology Network (OTN).



The OTN Harvest blog is a summary of selected topics posted on the OTN Oracle JDeveloper forum.



It is an effort to turn knowledge exchange into an interesting read for developers who enjoy little nuggets of wisdom





Frank Nimphius

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