Web Services for Remote Portlets (WSRP) is an OASIS

OASIS (organization)

The Organization for the Advancement of Structured Information Standards is a global consortium that drives the development, convergence and adoption of e-business and web service standards...

-approved network protocol standard designed for communications with remote portlet

Portlet

Portlets are pluggable user interface software components that are managed and displayed in a web portal. Portlets produce fragments of markup code that are aggregated into a portal. Typically, following the desktop metaphor, a portal page is displayed as a collection of non-overlapping portlet...

s.

Overview

The WSRP specification defines a web service

Web service

A Web service is a method of communication between two electronic devices over the web.The W3C defines a "Web service" as "a software system designed to support interoperable machine-to-machine interaction over a network". It has an interface described in a machine-processable format...

 interface for interacting with presentation-oriented web services. Initial work was produced through the joint efforts of the Web Services for Interactive Applications (WSIA) and Web Services for Remote Portlets (WSRP) OASIS Technical Committees. With the approval of WSRP v1 as an OASIS standard in September, 2003, these two technical committees merged and continued the work as the Web Services for Remote Portlets (WSRP) OASIS Technical Committee.

Scenarios that motivate WSRP functionality include:

• content hosts, such as portal servers, providing portlets as presentation-oriented web services that can be used by aggregation engines;
• content aggregators, such as portal servers, consuming presentation-oriented web services provided by portal or non-portal content providers and integrating them into a portal framework.

Implementation

The WSRP specification does not make any statements as to implementation. Java's portlet specification, JSR 168, and WSRP are not competing technologies. JSR 168 may be used to define a portlet, and WSRP may be used to define a portlet's operations to remote containers. JSR 168 portlets and WSRP may be used together to define a portlet and to provide remote operations. Similarly, .NET

.NET Framework

The .NET Framework is a software framework that runs primarily on Microsoft Windows. It includes a large library and supports several programming languages which allows language interoperability...

 portlets may be created for use with WSRP. Interoperability between JSR 168 and .NET WSRP implementations has been demonstrated.

There are several WSRP implementations to assist developers:

• The Liferay Enterprise Portal provides an implementation of WSRP 1.0 and 2.0 producer and consumers available in both its commercial Enterprise Edition and open source Community Edition.
• Microsoft
  Microsoft
  Microsoft Corporation is an American public multinational corporation headquartered in Redmond, Washington, USA that develops, manufactures, licenses, and supports a wide range of products and services predominantly related to computing through its various product divisions...
  
   provides a WSRP producer and consumer WebPart for both SharePoint 2007 and 2010.
• The OpenPortal WSRP project's goal is to create a high quality, enterprise-class WSRP v1 and v2 producer and consumer with an associated developer community.
• The GateIn Portal project (JBoss
  JBoss (company)
  JBoss is a division of Red Hat, Inc.. It specializes in open-source middleware software.The company profits from a service-based business model. JBoss employ a Professional Open Source business model where the core developers of projects make a living and offer their services...
  
   & eXo
  Exo
  Exo may refer to:*Endo-exo isomerism*The Enriched Xenon Observatory neutrinoless double beta decay experiment*eXo Platform the open source software...
  
  ), provides an implementation of both WSRP v1 and v2 (as of GateIn 3.1.0), producer and consumer using GateIn and GateIn Portlet Container.
• Apache WSRP4J was an Apache
  Apache Software Foundation
  The Apache Software Foundation is a non-profit corporation to support Apache software projects, including the Apache HTTP Server. The ASF was formed from the Apache Group and incorporated in Delaware, U.S., in June 1999.The Apache Software Foundation is a decentralized community of developers...
  
   Incubator
  Apache Incubator
  Apache Incubator is the gateway for Open source projects intended to become fully fledged Apache Software Foundation projects.The Incubator project was created in October 2002 to provide an entry path to the Apache Software Foundation for projects and codebases wishing to become part of the...
  
   subproject spearheaded by IBM
  IBM
  International Business Machines Corporation or IBM is an American multinational technology and consulting corporation headquartered in Armonk, New York, United States. IBM manufactures and sells computer hardware and software, and it offers infrastructure, hosting and consulting services in areas...
  
   with the stated goal of "kick starting the broad adoption" of WSRP. WSRP4J was designed to assist in the development and deployment of WSRP v1 services. WSRP4J was in incubator status, primarily due to patent concerns revolving around the WSRP specification. Given WSRP4J's incubator status, the project did not produce formal releases. The project has been terminated in 2010.

The first release, WSRP v1, provided a limited interoperability platform. Further versions of WSRP v1 were abandoned so that effort could be concentrated on WSRP v2. WSRP v2 augments the initial standard with cross-portlet coordination and access management features. This major update to the standard permits a more useful integration of multiple content sources, regardless of whether they are local or remote, into a new web application. In addition, WSRP v2 supports Web 2.0

Web 2.0

The term Web 2.0 is associated with web applications that facilitate participatory information sharing, interoperability, user-centered design, and collaboration on the World Wide Web...

 technologies, such as AJAX

Ajax

- Mythology :* Ajax , son of Telamon, ruler of Salamis and a hero in the Trojan War, also known as "Ajax the Great"* Ajax the Lesser, son of Oileus, ruler of Locris and the leader of the Locrian contingent during the Trojan War.- People :...

 and REST

Representational State Transfer

Representational state transfer is a style of software architecture for distributed hypermedia systems such as the World Wide Web. The term representational state transfer was introduced and defined in 2000 by Roy Fielding in his doctoral dissertation...

, without requiring them. WSRP v2 was approved by OASIS on April 1^st, 2008.

External links

• Web Services for Remote Portlets OASIS TC
• WSRP 1.0 Specification
• WSRP 2.0 Specification
• WSRP description by IBM
• WSRP Community & Discussion Forum
• SharePoint WSRP Integration
• Apache WSRP4J Java Implementation of a WSRP Producer (Initiated by IBM in 2003 and Terminated in 2010)
• Open source WSRP implementation at java.net
• Open source JSR-168 / WSRP community at java.net
• WSRP FAQ