OpenLink Software Server 4.5 Benutzerhandbuch
Virtuoso 4.5 Application and Integration Reviewers Guide
Copyright ©2006 OpenLink Software
Copyright ©2006 OpenLink Software
7
3 Web Services Platform
3.1 What Is This?
As a Web Services Platform, Virtuoso includes built-in support for WSDL, SOAP, UDDI
WS-Security, and several other Web Services Protocols.
WS-Security, and several other Web Services Protocols.
It enables the creation and composition of Web Services from existing application logic
pools hosted within monolithic mission critical applications. Thus, the process of creating
a SOAP and WSDL compliant Web Service from existing application logic resolves to the
following steps:
pools hosted within monolithic mission critical applications. Thus, the process of creating
a SOAP and WSDL compliant Web Service from existing application logic resolves to the
following steps:
Identify the SQL Stored Procedures, Java Classes, .NET Assemblies, or C/C++
modules implementing the functionality in question.
Use the HTML UI to trigger the generation of a WSDL file and SOAP invocation
wrappers for the application logic
Use Virtuoso's HTTP Server functionality to create a Virtual Directory that acts as
an execution endpoint for your Web Service
Test the usability of the new Web Service by interacting directly with an HTML
based Web Service verification page
Proceed to using your newly created service with a Web Service aware
development tool, environment, or service
Register your newly created service with Virtuoso's in-built UDDI Server, and then
advertise your service internally or externally to other service consumers.
Virtuoso facilitates the creation of SOAP compliant Web Services from existing or legacy
monolithic applications without locking you into a host operating system, programming
language/environment, or database engine. It enables you to perform the prerequisite
step of creating and/or composing Web Services as part of your effort to cost effectively
exploit emerging application architecture principles such as Service Oriented and Event
Driven Architectures
monolithic applications without locking you into a host operating system, programming
language/environment, or database engine. It enables you to perform the prerequisite
step of creating and/or composing Web Services as part of your effort to cost effectively
exploit emerging application architecture principles such as Service Oriented and Event
Driven Architectures
.
3.2 The Value Proposition
Service Composition by exposure of existing time-tested application logic for invocation
using Web Services protocols without any code re-writes. Code format support includes
SQL Stored Procedures, .NET assemblies, Java Classes, C/C++ modules, etc.
using Web Services protocols without any code re-writes. Code format support includes
SQL Stored Procedures, .NET assemblies, Java Classes, C/C++ modules, etc.
Service Invocation Endpoints via HTTP/WebDAV based virtual directory and multi-homing
functionality that provides endpoints for SOAP-, WS-Security-, WSDL-, and UDDI-
compliant interactions with composite services.
functionality that provides endpoints for SOAP-, WS-Security-, WSDL-, and UDDI-
compliant interactions with composite services.