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Wednesday, 13 September 2017

ADF Basics: Filter ViewObject data using getFilteredRows and RowQualifier


Sometimes we need to get filtered data from ViewObject using one or multiple conditions,
Though this is the very basic of framework yet new developers find it confusing.

There are two ways of filtering ViewObject

 1. In this we apply WHERE clause on ViewObject and it affects resultSet data, Suppose we have Department ViewObject and we want to see data of DepartmentId 4 on page after filtering, for this viewCritera, bind variables comes in action
ADF Basics: Apply and Change WHERE Clause of ViewObject at runtime programmatically

2. In this user want to get filtered data (Rows) in code only without any effect on ViewObject resultSet (page data), Here I am discussing this point

We can get filtered data from view object using two methods-

Wednesday, 23 August 2017

Add new row and copy existing row to HTML table using JavaScript


Hello All

This post is about adding new row in HTML table using form entry or copy existing row to table using javascript

So here I have created a HTML page, added a form, two buttons, and a table on page and it looks like this


Monday, 17 July 2017

Reinitialise taskFlow in dynamic region and set focus to default activity


Hello All

We all use bounded task flows in ADF application development and to switch between multiple task flows we use concept of dynamic region

Recently I came across a problem about dynamic region and bounded task flows, Scenario is like this

I have dropped a BTF in dynamic region and there is a link on page to open that task flow and those who have used dynamic region would be familiar with this piece of code


Wednesday, 28 June 2017

Hide values from ADF SelectOneChoice using EL expression on UI


This post is about a specific requirement that is to hide some values from adf based select one choice from UI
Previously I have posted about disabling some items from select one choice and this post uses same steps to hide values from lov

Saturday, 3 June 2017

oracle.jbo.domain.DataCreationException: JBO-25009 while using multiple selection component in ADF Faces


Previously I have posted about using multi-selection components (af:selectManyCheckbox, af:selectManyChoice, af:selectManyListbox, af:selectManyShuttle) of ADF Faces. These components make use of list binding and work on base attribute and display attribute concept

Access JAX-WS WebService from Java Class using Web Service Proxy in Jdeveloper


Web Service proxy class is a way to communicate with XML-based WebService using SOAP format,
In short, we can use service proxy class at client to access WebService

In JDeveloper IDE we can easily create client proxy class for WebService, Here in this post I am creating client proxy class to access a JAX-WS web service that I have created in previous blog post

Create POJO based JAX-WS WebService easily with Jdeveloper 12.1.3

Let's see how to implement this


Monday, 22 May 2017

Populate select one choice using Web Service Data Control in ADF Application


My previous post was about creating a JAX-WS Web Service from Java Bean and consuming web service and showing data in ADF table. Now In this post, I am going to elaborate about consuming that Web Service in ADF Application and show Employees data in selectOneChoice component


So for this requirement, We need to use Web Service Data Control and from that WSDL we can create ADF Faces components

Let's see how to implement this

Thursday, 18 May 2017

Populate data in ADF Table using Web Service Data Control


My previous post was about creating a JAX-WS Web Service from Java Bean. Now In this post, I am going to elaborate about consuming that Web Service in ADF Application and show Employees data in ADF Table

So for this requirement, We need to use Web Service Data Control and from that WSDL we can create ADF Faces components

Let's see how to implement this

Monday, 15 May 2017

Create POJO based JAX-WS WebService easily with Jdeveloper 12.1.3


Hello All

In this post, I am talking about creating a simple JAX-WS web service using Jdeveloper 12.1.3 .
JAX-WS is a Java API for XML Web Services and we can create a JAX-WS easily with Jdeveloper IDE
Idea is to create a web service that shows Employees list with their name, designation, salary and department name so for this, I am going to use POJO Java Class

Let's implement it

Friday, 12 May 2017

Understanding Nested Application Modules in Oracle ADF


Application Module acts as a container for view Object and view Link business components that are used in a specific task. It provides data model and data control to show required information and perform action for the client
An application module represents a single transaction and owns one database connection that's why commit and rollback works for all view Objects inside an application module

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

Thursday, 4 May 2017

Implement contains/endswith behavior in model based autoSuggest Lov (Input list and combo box)


Hello All

Hope Everyone knows about list of values and autoSuggest beahvior of ADF Framework,
For those who are new to framework can look at this post
ADF Basics : Implementing auto suggest behavior in ADF Faces lov (list of values)

Monday, 1 May 2017

Undo row selection of af:table in selection listener method conditionally


Recently I have seen a question on OTN Jdeveloper forum and It was about table selection listener
Requirement is like this suppose user has to check a condition after selecting a row and if that condition is true only then new row will be selected else selected row should be previous one

It means undo row selection on validation(condition) failure
So In this post I am implementing same scenario and here I am using Departments table of HR Schema to prepare model and condition is that user should be able to select new row only if ManagerId is not null

Wednesday, 26 April 2017

ADF Skinning : Resize FacesMessage, Change look n feel of Message Box


We all must have used FacesMessage somewhere in ADF application, FacesMessage is used to show any notification like error, warning or confirmation
Here you can read more about FacesMessage

Previously I have posted about changing default icon of FacesMessage using ADF Skin now this post is about resizing FacesMessage dialog and changing it's look and feel

Saturday, 22 April 2017

Blog listed in 'Top 60 Oracle Blogs on planet' listing on Feedspot



Feedspot is modern RSS reader built especially for power users who want to save time
and they have a listed Top 60 Oracle Blogs on Planet based on following critera

Wednesday, 19 April 2017

Get af:richTextEditor value without HTML formatting and tags using jsoup library



af:richTextEditor
is used to format text in rich text using HTML formatting and it is used to get the formatted text. Previously I have posted about it
Cool Component - Using af:richTextEditor as text editor, HTML editor with custom toolbox in Oracle ADF

Monday, 17 April 2017

Show saved file (pdf/text/html/xml/image) content on page from database (BLOB) in ADF Application


Hello All

Previously I have posted about uploading and saving files in database blob column now this post is about showing saved file content on page using ADF Faces inline frame component

In this post I am extending same previous application, Now see how we can implement this
There are few more steps to go , See the additional steps to show file content on page-


Tuesday, 11 April 2017

Oracle ADF Best Practices, Mistakes and Worst Practices


In this post I am putting some practices and that we should follow while using Oracle Application Development Framework for development


Monday, 10 April 2017

ADF Basics| Tip to Hide af:inputListOfValues search popup at runtime

Hello All

Previously I have posted about a requiremnt of  hiding af:inputListOfValues search icon using CSS
ADF Skinning | Hiding search icon of af:inputListOfValues using CSS & StyleClass

In that solution search icon doesn't appear on page but it is a part of JSF component tree so when user press TAB+SPACE after entering a value in lov component then search popup appears on screen as this action invokes search icon click event

Recently a Friend of mine came across another requirement that was not showing lov popup at all as only autoSuggest behavior was required , so for this first way is to use autoSuggest behavior in an af:inputText compoent using Lov bindings and second way is to short circuit component life cycle

Saturday, 8 April 2017

Uploading and downloading files from database (BLOB) in Oracle ADF (12.1.3)

Hello all

This post is about a very simple requirement -file handling (uploading and downloading various types of file) in ADF and it is needed very often to store file in absolute server path (actual path) and download from there and I have posted about that previously

Uploading and downloading files from absolute server path

Now this post is about uploading and saving file in database BLOB column and downloading from there
See step by step implementation -

Saturday, 1 April 2017

OTN Question: Not able to see last record in af:table when using icons (May be a bug)


Hello All

This post is about a problem that occurs sometimes in af:table when we use icon in any column, I am not sure that it is a bug or not but sometimes table is not fully stretched on first load and last row doesn't appear properly on page but after refreshing page again problem is solved.

Monday, 20 March 2017

ADF Basics: Tip for not showing record in dependent lov


Hello All

Recently I have seen a question on OTN forum - Question on cascading LOV

It was about cascading lovs in ADF
Suppose we have 2 dependent LOVs and requirement is that 2nd lov should not show any data until first one is selected , this is very simple and common use case but for beginners it's a tedious task

So I thought to write it here to help others

Wednesday, 15 March 2017

Fetch Tweets of a User using Twitter4J API and show in af:table in ADF & Java


In the previous blogs we learned about posting tweets on twitter timeline using Twitter4J API and sending direct meaages to followers using same API

This post is next in the series and about fetching a user tweets and showing in ADF Table , For this requirement we need to use same Consumer Key+ Secret and Access Token+Secret (Refer previous posts for this)

And In same way after authentication we can fetch a user tweets by using it's twitter handle. So for this requirement I have added a button to fetch tweets and a POJO based table to show fetched tweets in page

See the code to fetch tweets using user's twitter handle and it's retweets and favourites count, We can get tweets by passing page number as parameter and it returns a list of tweets


Thursday, 9 March 2017

Send Direct Message to followers using Twiter4J API in Oracle ADF and Java


My previous post was about tweeting using Twitter4J API from Oracle ADF Application . Twitter4J is a Java API that simplifies accessting twitter features in our application easily

In this I am going to show how to send DM (Direct Message) to anyone using their twitter handle and for this we need to use same consumer key, secret and access token, secret (How to access all these is described in previous post)

Tuesday, 7 March 2017

Post to twitter using Twitter4J API in Oracle ADF and Java


Hello All

In this post I am talking about how to post a tweet on your twitter timeline using Twitter4J Java API in your Oracle ADF Application
Using this API makes the process very simple , For accessing twitter we need Twitter API keys, It is called Consumer Key and Access Token

For this you need a twitter account and then follow these steps

Thursday, 2 March 2017

Generate permanent Facebook Page Access Token to access Graph API


Hello All,
Hope you are doing well

Earlier I have posted about using facebook graph api to get profile information, post status on facebook timeline and post as facebook page.

To Access Facebook graph API we need to use Access Token and each access token has it's expiry time (temporary access tokens) but to build an application we need a permanent access token so that our app doesn't stop working after a time and it is not very easy to get a permanent access token , there are some steps you need to follow to get one

Thursday, 16 February 2017

Post to Facebook Page Wall using restfb Graph API in ADF & Java


This is next post working with Facebook Graph API series, Previously I have posted about gettting access token and use it to get Facebook Profile detail and Posting status on your Facebook Timeline using restfb Facebook Graph API

Go through previous posts for better understanding of this blog post

Saturday, 11 February 2017

Post Status on Facebook Timeline using restfb Graph API in ADF & Java

Hello All

Previous post was about generating temporary access token and using it get Facebook profile detail usinf restfb Graph API , Go through previous post before this as graph api basics are described in that post

Now In this post I am talking about posting facebook status update so for this I am extending same sample application

Wednesday, 8 February 2017

Get Facebook profile detail using restfb Graph API in Java & ADF


Facebook is most popular social networking sites now a days and influencing our life in all aspect. Facebook gives us option to use it's Graph API to access it's features programmatically, The Graph API is primary way to read and write to facebook social graph using Access Tokens

In this post I am talking about how to access Facebook profile detail using restfb graph API . So First we need to know about Acsess Tokens

Sunday, 5 February 2017

Change live application language/resource in Oracle ADF, Change XML Resource file at runtime


Hello All

I have posted about using external XML file as List resource bundle earlier , the aim of resource file is to read application static text from some source so that we can change that without compiling and redeploying application

Next requirement is to change application language , sometimes we need support multiple langauge in ADF application and it requires change in all static text so for this I am going to use separate XML resource file for different language and in this post I'll show that how to update resource file in a live running application

Wednesday, 1 February 2017

Export ViewObject data to PDF file using Apache PDFBox

Hello All
Hope you all are doing well :)

This post is about exporting view object data in a pdf file directly from af:table , export to excel is built in feature of ADF but exporting data in PDF requires little bit of extra effort
So here for this requirement I am using Apache PDFBox library , previously I have posted about using this API to create PDF file from text data
I know many of you will not visit that link ;) So a quick overview

Monday, 23 January 2017

Using external XML file as list resource bundle in ADF Application


Hello All

In this post I am talking about using external XML file as list resource bundle in ADF Application

Using this approach we need not to hard code component's label and messages , all labels and messages will be read from XML file and no need to open application to change any resource , In short we can update resources without compiling and redeploying application

Friday, 20 January 2017

Import data from XLS and XLSX (Excel) to ADF Table Using Apache POI

ADF provides feature to export data to excel using export collection listener with just one click but there is no built in feature to upload data from excel file to ADF table

For this requirement we have to use some other API and Apache POI is best for excel communication, In this post I am going to discuss about uploading excel (XLS and XLSX) file data to ADF table

Tuesday, 17 January 2017

ADF Basics: Duplicate Record Validation Using Custom Java Method


Hello All

Recently I have posted about duplicate record validation using model level business rules (Unique Key Validation) but sometimes we need to check some more conditions or we have some other logic that should be checked before validating the input then in that case we can write custom java method in model (Application Module Impl class) and call it in bean validator using binding layer

Monday, 16 January 2017

Uploading mulitiple files to server path in Oracle ADF using af:inputFile



Hello All :)

Previously I have posted about uploading and downloading files from server path (Refer this post for more clarification), In that post I have described the process of uploading single file at a time but sometimes we need to upload multiple files at a time and for that requirement we can use same code with little modification


So In this post we'll see that how can we upload multiple files at a time using af:inputFile, Here I am using same sample application that is used in previous post

Thursday, 12 January 2017

ADF Basics: Duplicate Record Validation Using Model Level Business Rules


Hello All

Hope you all are doing well :)

When we are creating any data entry form , at that time preventing duplicate entries for some of attributes is very basic validation requirement .

Suppose We are creating a form to make new Departments entry and  there should not be two departments with same name so for this type of validation we need not to write single line of code in Oracle ADF as there are predefined business rules for basic validation

Thursday, 5 January 2017

Get Installed Printer List using Java, Print a file with default Printer




This post shows that how can we get installed printers list using PrintServiceLookup class


Implementations of this class provide lookup services for print services


Wednesday, 4 January 2017

Invitation to Write for My Blog - A New Start on this New Year


Hello All

I am thinking about doing something new in this New Year and for that I thought about guest blog posts for deeper knowledge and information

If you have some great content that you would like to share with world then I have this good news for you, I am accepting guests blog posts for this blog (www.awasthiashish.com)

Monday, 2 January 2017

Best Wishes- Happy New Year 2017

Another year filled with memories and joyous times has passed

Another year filled with endless possibilities and happiness has come


You all have made my year very special, and I wish a very Happy New Year to all of you


Every New Year gives you the perfect chance to start something new and fresh. So do your bit this year and make the world a better place for yourself and others


Thanks everyone for your love and support :) :)