WSRPWeb Services for Remote Portlets

Matthew J. Dovey

Oxford e-Science Centre

Potted History

Apache JetSpeed Portal

WebServices

Web Service User Interface

JCP - Java Portlet APIJSR 168

OASIS TCWeb Service for Remote Portals

1999 2000 2001 2002 2003Very rough timeline…

OASIS TCWeb Service for Interactive Applications

OASIS TCWSIA Family

WSRP as the initial spec.

uPortal WebService channel

Overview Web Services for Remote Portals (WSRP) defines

a standard for interactive, user-facing web services that plug and play with portals.

WSRP defines: A WSDL interface description for invocation of WSRP services How to Publish, Find, Bind WSRP services and metadata Markup Fragment Rules for markup emitted by WSRP services Applicable Security Mechanisms, Billing information ?, ...

Companies involved in WSRP: Bea, Bowstreet, Divine, Epicentric, Factiva, France Telecom, Fujitsu, HP, IBM,

Interwoven, Lexis-Nexis, Lotus, Moravia IT, Netegrity, Oracle, Peoplesoft, Plumtree, Silverstream, Stellent, SUN, Sybase, Tibco, WebCollage, SAP Portals, SeeBeyond

Committee Draft – about to go to OASIS vote - BEA, IBM, Oracle, Plumtree, SAP, Vignette

WSRP and Portlet API(s)

Web Services for Remote Portals (WSRP)

Java Portlet API (JSR 168)

C# „Portlet API“

(.NET). . .

Platform Independent Web ServiceInterface

Platform specific, local Portlet APIs

Portlet APIs may be defined for different programming languages; WSRP can bridge between the different platforms, leveraging platform independence of Web services

Goal:Portlets written to Portlet API can be published as WSRP servicesWSRP services can be integrated through Portlet Proxies written to Portlet API

WSRP Impl. onplain J2EE or .NET

platform

WSRP Services Plug&Play with Portals

PortalsWSRPServicesPortalsPortals

PortalsPortalsClientsClients

WebClientsWeb

ClientsWeb

ClientsWeb

ClientsWeb

ClientsWeb

ClientsWeb

ClientsWeb

ClientsWeb

ClientsWeb

Clients

PortalsPortals

Registry

PortalsPortalsPortals

PublishFind

WSRPServicesPortalsPortals

Bind

WSRPServices

e.g.

WSRP and related Standards

WSRP

SOAP(Invocation)

WSDL(Description)

UDDI(Publish,Find&Bind)

WSIAWSRP/WSIA

Common Base

(X)HTML WMLVoiceXML

cHTML ...

Local and Remote Portlets

JetS

peed

AP

IuP

ort

al A

PI

JSR

16

8 e

tc.

Web

Ser

vice

Ser

ver

WebServiceClient

UDDI

SOAP

Simple WSRP Service – View only

Interactive WSRP Service with transient conversational State API

getMarkup performInteraction/performBlockingInteraction releaseSessions initCookies

Interactive WSRP Service with persistent Entity API

clonePortlets getMarkup performInteraction/performBlockingInteraction initCookies releaseSessions destroyPortlets

Persistent Entity and Session State

Other API

Portlet Entity Properties getPortletPropertyDescription getPortletProperties setPortletProperties

cf OGSI ServiceData

Non anonymous consumers (e.g. authentication) register deregister modifyRegistration

Metadata (e.g. requires ssl, uses cookies etc) getPortletEntityDescription getServiceDescription

Perform Portlet Action

Destroy Portlet Instance

Create Portlet Instance

OverviewWSRP Consumer

(Portal)WSRP Producer

(Service)AddsPortlet

RemovesPortlet

ClicksAction

Get Portlet MarkupI S

S

User

ViewsPortlet

Allocate new Instance

Generate Markup,(opt: create Session)

Action Handling(opt: create Session)

I

I

A

I A

I

I A

I

I S

I

Destroy instance

I

AS

I A

Full API Overview

Markup getMarkup performBlockingInteraction releaseSessions initCookies

Registration register deregister modifyRegistration

ServiceDescription getServiceDescription

Portlet Management getPortletDescription clonePortlet destroyPortlets getPortletPropertyDescripti

on getPortletProperties setPortletProperties

uPortal - WSRP Crosswalkpublic void authenticate(String username, String password)

register

public String instantiateChannel(String fname)clonePortlet

public Element renderChannel(String instanceId, ChannelRuntimeData runtimeData)getMarkup

public void receiveEvent(String instanceId, PortalEvent portalEvent)performBlockingInteraction

public void freeChannel(String instanceId) destroyPortlet/releaseSessions

public void logout()deregister

Discussion

Where does WSRP fit into the GRID?