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yourfanat wrote: I am using another tool for Oracle developers - dbForge Studio for Oracle. This IDE has lots of usefull features, among them: oracle designer, code competion and formatter, query builder, debugger, profiler, erxport/import, reports and many others. The latest version supports Oracle 12C. More information here.
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In many cases, the end of the year gives you time to step back and take stock of the last 12 months. This is when many of us take a hard look at what worked and what did not, complete performance reviews, and formulate plans for the coming year. For me, it is all of those things plus a time when I u...
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Portal Standards for Web Services
Portal Standards for Web Services

Portlets are visual components that make up a Web page residing in a Web portal. Typically, when an end user requests a personalized Web page, multiple portlets are invoked when that page is created. An example is a news/financial portal that displays a single page that includes updated financial news, a report on how the stock market is doing, and the latest information on stocks of interest to the end user. Each component consists of one or more portlets.

Portlets rely on APIs to communicate with the portal and access various types of information, such as a user profile. The lack of standards has led portal server platform vendors to define proprietary APIs for local portal components and for invocation of remote components. This creates interoperability problems for portal customers, application vendors, content providers, and portal software vendors.

The Java Portlet Specification JSR 168 and Web Services for Remote Portals(WSRP) standards are being developed to overcome these problems, providing interoperability between portlets and portals, and between portals and user-facing Web services.

The Java Portlet Specification establishes interoperability between portlets and portals. All portlets written to the JSR 168 Portlet API will run on all compliant portal servers. This API will cleanly separate portlets from the surrounding portal server infrastructure so that the portlets can run on different portal servers, just as servlets can run on different application servers.

Similarly, WSRP will enable interoperability between portals and WSRP-compliant Web services for portals. WSRP services are presentation-oriented, user-facing Web services that plug-and-play with portals or other applications. They are designed to let businesses provide content or applications in a form that does not require any manual adaptation. Portals can easily aggregate WSRP services without programming effort.

Because WSRP includes presentation features, WSRP service providers can determine how end users see their content and applications, and to what degree adaptation, transcoding, and translation might be allowed. WSRP services can be published into public or corporate service directories (Universal Description, Discovery, and Integration; UDDI), where portals that want to display their content can find them easily.

Using WSRP, portals can easily integrate content and applications from internal and external content providers. A portal administrator simply picks desired services from a list and integrates them.

The WSRP standard will define a Web services interface using Web Services Description Language. The standard lets WSRP services be implemented in different ways, whether as a Java 2 Platform, Enterprise Edition (J2EE)-based Web service, a Web service implemented on the .NET platform, or a portlet published as a WSRP service by a portal. The standard enables use of generic adapter code to plug any WSRP service into intermediary applications rather than requiring specific proxy code. This will allow implementation of WSRP services on any Web services-capable platform, be it J2EE or .NET. The WSRP technical committee plans to have Version 1.0 ready by the middle of this year.

The Java Portlet API and WSRP will be able to cooperate in a beneficial way. WSRP services could be integrated in portals through portlet proxies written to the Java Portlet API. Conversely, portlets could be wrapped in and published as WSRP services.

Once a portlet entry is listed in the UDDI directory, other portals can find and bind to the referenced WSRP service. To make a WSRP service available as a portlet, the portal's administration may create an entry in the local portlet registry with the information obtained from UDDI. For example, once the entry is in the local portlet registry, users might select it and put copies of it on their pages. When a portlet proxy is invoked during page aggregation, the portlet proxy will generate a Simple Object Access Protocol (SOAP) request and send it to the WSRP service. Then it receives the SOAP response from the WSRP service and provides the result to the portal.

Conclusion
The Java Portlet API and WSRP standards will enable interoperability of portal servers; local portlets; and remote, interactive, user-facing Web services, respectively. The ultimate goal is that a large number of portlets that can run on any compliant portal server locally, as well as remote WSRP services that plug and play with all compliant portal servers, will be available, and that a portal component market comes into existence in which a large variety of application providers, ISVs, and the open-source community offer readily available portlets or visual Web services.

About Thomas Schaeck
After graduating in computer sciences at the University of Karlsruhe, Thomas Schaeck joined IBM to work in JavaTM technology-based development projects related to smart cards, including the OpenCard Framework (the de-facto standard for smart card applications in Java technology), Internet payments, and a digital signature solution. He is now working as an architect in WebSphere Portal Server development. He published various papers, filed 20 patents and was a coauthor of the books "Smart Card Application Development in JavaTM" (Springer 2000) and "Pervasive Computing" (Addison-Wesley 2001).

About Stefan Hepper
After graduating in Computer Science at the University of Karlsruhe, Stefan worked for three years in the Research Center Karlsruhe in the area of medical robotics and component-based software architectures for real-time systems. In 1998 he joined the IBM where he worked with Java Cards in the areas of security and card management. After joining the IBM Pervasive Computing division, he worked on the SyncML reference implementation and is now engaged in the IBM WebSphere Portal Server project and co-leads the JSR 168 to standardize the Portlet API.
He has held lectures at international conferences, published papers, filed patents and was a co-author of the book "Pervasive Computing" (Addison-Wesley 2001).

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