ORACLE TECHNOLOGY

Following images gives you a little bit  idea of components in adf faces. 1. Common components :   2. Layouts : 3. Operations :

This is to explain how a query listener on an af:table component is used to intercept table queries so the developer can programmatically modify the query conditions provided by the application user.e.g. when using the table filter. Default query by ADF for filtering the result contains a map having parameters which are there in the table and their respective value's. In a page you have a table filters enabled. And if you want to override the filter query through bean use the following code. import java.util.Map; import javax.el.ELContext; import javax.el.ExpressionFactory; import javax.el.MethodExpression; import javax.faces.context.FacesContext; import oracle.adf.view.rich.event.QueryEvent; import oracle.adf.view.rich.model.FilterableQueryDescriptor; public class BackingBean {     public BackingBean() {     }     public void customQueryListner (QueryEvent queryEvent) {      ...

Web 1.0 : Originally, the World Wide Web was conceived as a mechanism for presenting text and image-rich pages connected together by hyperlinks that anyone could access as long as he or she had a computer and online access. This essentially was Web 1.0. Web 1.5 : As the Web developed, it became clear that, in enterprise environments, a lot of information was held as structured information within business applications.Enterprise portals could link information from these sources; these portals became Web 1.5. Web 2.0 : As enterprise portals became more popular, the Web transformed from a pure information source to one that provides a variety of services, which have now become a vital part of a user’s day-to-day toolbox, both for personal and business use. As these new service concepts have emerged, users’ expectations of the interaction level have changed as well. In the Web 1.0 era, plain information pages were sufficient. However, today’s users expect highly interactive we...

Main purpose of this writing is to give you a little bit introduction to Fussion Middleware Oracle Fusion Middleware is a collection of leading, standards-based software products. Which span a range of tools and services from Java EE and developer tools, to integration services,business intelligence, collaboration, and content management. The Fusion Middleware’s  architecture enables you to “drop and deploy” various Oracle Fusion Middleware products into your existing IT environments as shown in the diagram. Oracle Fusion Middleware’s modular approach also enables organizations to extend the value of existing middleware technologies and business applications from other software vendors like Microsoft, IBM, SAP.     Oracle WebLogic Server is the core, service-oriented architecture platform that underlies the Oracle Fusion Middleware components.The stack includes business processes, process management, content management, and business intell...

Oracle WebCenter 11g is an integrated set of products used to create composite applications, social applications,enterprise portals, collaborative communities and Internet/Intranet Web sites all built on a standards-based SOA.   Some of the Key benefits of Webcenter are   1. Reduces your development time. 2. Develop applications using industry standards that are supported in portals,Java EE, content integration, SOA. 3. Easily integrate your application into an existing infrastructure, such as content management,security, application server and database infrastructure. 4.You can extend your Java EE and SOA applications. WebCenter components : How did WebCenter comes to picture ? It started with JavaServer Faces (JSF) which offers you component-based development that provides benefits like drag-and-drop support and easy editing of component properties. Oracle’s Application Development Framework (ADF) provides another level of productivity you...

The main components of the deployment architecture are: • WebLogic Server • Portlets deployed in Portlet Container • Metadata storage for customization information • Enterprise Content Management solution with Content Adapters • WebCenter Services • WebCenter Search • Identity Management         WebLogic Server, which is a Java EE–compliant application server, is at the center of WebCenter. WebCenter applications are Java EE applications that are deployed to WebLogic Server. WebCenter Spaces is a prebuilt custom application using WebCenter Framework and Services. Portlets : WebCenter applications can consume portlets. Portlets are deployed into a Portlet Container and are accessed by various HTTP-based network protocols such as WSRP and SOAP. Oracle WebCenter supports several portlet APIs such as JSR 168 and PDK Java.   Metadata Services : WebCenter applications can be customized or personalize...

Follwoing points need to be taken care while developing the ADf application.With these points we can improve the application perforemance. 1. Understanding of the Data, Business, and Application : First and most importanat point is to understand the data model properly,in terms of table dependency.If we are clear about relationship between tables then it will be easy to write query and implement the logic by using various clauses,conditions,joins.. 2. Simple is usually faster   :  instead of writing a very complex SQL qeries, if we break it into multiple simple SQL statements then the chances are quite high that the performance will improve. Make use of the EXPLAIN PLAN to see the query cost.  3. Joining tables in the proper order : Use proper joins between the tables.An improper join can result into performance issues. 4. Using Bind Variables, Stored Procs, and Packages : use proper bind variables where possible in queries.It will fetch the req...