Point of view for WSRP compliant portal technologies

SOA architecture and Web services as its implementation technology has been widely adopted across industries for exposing applications as services as well as a future technology to develop new services . These services are either consumed by other applications or exposed to end-users through portal applications (or other user interfaces). Broadly, portals are regarded as one-point access to all applications a consume needs. Often, a portal is aggregation of pluggable UI fragments called portlets. Portlets are interactive Web applications that aggregate data from local or remote applications/services and displayed by portals. These portlets are often complex and hard to design, sit locally on system and are particular to the portal container. This marrs the dynamic integration of business applications and information resources into portals, which would often require redesign of portlets for each particular service consumed. By integrating these portlets (i.e. the presentation logic) with corresponding services (i.e. the application), often called Remote Portlets, the extra burden of portlet management can be avoided.

Web Services for Remote Portlets (WSRP), which evolved from JSR 168 provides standards for interaction w

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ith presentation-oriented Web services and expose remote portlets as services. WSRP-compliant portals consume these services. It standardizes the interface definitions in service interactions between various user interface components, even taking into consideration the run-time user interactions with those components.

In this view, we have analyzed various offerings for WSRP from key players in the market. Following salient parameters were chosen for comparison:-

Table 1

Application integration is major issue for enterprise portal projects. WSRP standard enables development of interoperable portlets on different portal products thereby increasing the scalability, reliability, performance and availability of portlets to an organization. This along with the advantage of user dependent selectivity and aggregation of information from all kinds of sources can dramatically increase reach and productivity when building enterprise portals. Without WSRP, organizations are limited to propriety portlet technology that not only locks it to a particular vendor, but also increases the development and deployment time for front-end applications that talk to standardized Web services at the back end.