Techartifact

Parent Action Activity in ADF Task Flow

Vinay — Thu, 16 Feb 2012 04:35:00 +0000

Recently I have faced a problem, when was trying to navigate to ADF Task Flow Call activity. The problem was, that I was initiating navigation from inside the region and navigation flow was defined not in bounded region ADF Task Flow, but inside parent bounded page ADF Task Flow. This means, navigation outcome from parent [...]

Oracle ADF | Master Detail Detail Tables

Vinay — Tue, 07 Feb 2012 11:57:53 +0000

Today i will show how to create simple master detail form in ADF which would help people coming from 4GL (Forms Developer) technology to ADF. Source – http://www.fireboxtraining.com

Programmatically access a view criteria

Vinay — Tue, 07 Feb 2012 11:10:47 +0000

Programmatically access a view criteria Source -ADFInsiderEssentials -Oracle

Passing Data within a Task Flow

Vinay — Thu, 02 Feb 2012 08:04:55 +0000

Passing Data within a Task Flow - It is a common use case to pass parameters from ADF Task Flow with fragments into another ADF Task Flow without fragments.f the bounded task flows referenced by ADF regions share the data control scope and the transaction – we can access parameter directly through Expression Language. If [...]

JSP EL expression is not evaluated

Java bug — Mon, 23 Jan 2012 22:40:09 +0000

JSP or EL expression is not evaluated. I have seen couple of times JSP directly displaying the el-expression on webpages. It may be because of couple reasons 1) Typo in your jsp. 2) Attributes are not set in reqeust or pageContext. 3) You have not enabled EL expression in your JSP or not enabled in [...]

SpringMVC example with Maven

Java bug — Sun, 22 Jan 2012 21:52:41 +0000

Spring MVC is part of Springframework. It allow us to create application based on MVC design pattern in way that, we can leverage other features of Spring like authentication, ORM, AOP and others. In Spring MVC core component is the DispatcherServlet{link}, It works as front-controller. All request are processed by DispatcherServlet. It is also responbile [...]

JSP Life cycle

Vinay — Mon, 16 Jan 2012 15:23:06 +0000

Life cycle of a JSP page consists of two phases, translation phase and execution phase. Every JSP is a Servlet, a JSP page is translated and compiled into servlet and the resulting servlet handles the request, So life cycle of a JSP page largely depends on the Servlet API. JSP engine does the following 7 [...]

How HashMap work in Java

Vinay — Mon, 16 Jan 2012 13:30:56 +0000

“Hash Map is a Hash table based implementation of the Map interface. This implementation provides all of the optional map operations, and permits null values and the null key. (The HashMap class is roughly equivalent to Hashtable, except that it is unsynchronized and permits nulls.) This class makes no guarantees as to the order of [...]

Servlet lifecycle

Vinay — Sat, 14 Jan 2012 15:04:54 +0000

Servlets are managed by web container.Life cycle defines how servlet is loaded, instantiated and initialized, handles requests from clients and how it is taken out of service.The servlet life cycle methods are defined in the javax.servlet.Servlet interface of the Servlet API that all Servlets must implement directly or indirectly by extending GenericServlet or HttpServlet abstract [...]

Struts Interview Questions

Vinay — Mon, 12 Dec 2011 14:57:02 +0000

What is Struts? Struts is a web page development framework and an open source software that helps developers build web applications quickly and easily. Struts combines Java Servlets, Java Server Pages, custom tags, and message resources into a unified framework. It is a cooperative, synergistic platform, suitable for development teams, independent developers, and everyone between. [...]