11. Universal Description, Discovery and Integration (UDDI)

www.uddi.org

• UDDI – a mechanism for finding and publishing Web services
• The UDDI project site, www.uddi.org; More than 300 UDDI members
• UDDI specifications 1.0, 2.0, and 3.0, http://www.uddi.org/specification.html
• UDDI Business Registry (UBR)
• Query UBR
• UDDI Architecture
• UDDI API
• UDDI API Inquiry Methods
• UDDI API Publishing Methods

UDDI Registries

• UDDI Registry Web site: http://www.uddi.org/register.html
• Register once, publish everywhere
• Web Service Registries - repositories containing documents that describe business data
• Enables the creation of searchable Web services registries
• Stores the location of WSDL documents
• Publicly accessible UDDI Business Registry (USB) maintained by Microsoft, IBM, HP, and SAP
• Private UDDI registries (4 varieties)
• e-marketplace UDDI
• Portal UDDI
• Partner catalog UDDI
• Internal enterprise application integration UDDI
• Enterprise UDDI, http://www.microsoft.com/windows.netserver/evaluation/overview/dotnet/uddi.mspx

UUDI Discovery

• Discovery - the process of locating Web services through registries
• Direct discovery
• Indirect discovery

UDDI Business Registry (USB)

• An operator node is an organization that hosts an implementation of UDDI Business Registry (UBR)
• Replication of published data at all operator nodes at least every 12 hours
• 2 operator nodes: UDDI Version 1.0 UBR - IBM and Microsoft
• http://uddi.microsoft.com/default.aspx
• http://www-3.ibm.com/services/uddi/find
• 4 operator nodes: UDDI Version 2.0 - HP, IBM, Microsoft, and SAP
• http://uddi.rte.microsoft.com/search/frames.aspx
• http://www-3.ibm.com/services/uddi/v2beta/protect/registry.html
• http://udditest.sap.com
• NTT Communications of Tokyo, Japan, will become an operator mode in October 2002, http://www.ntt.com/uddi/index-e.html
• A custodian - a company registered with one operator node, the company's data appears in other registry as well
• UDDI Test Nodes
• https://uddi.ibm.com/testregistry/registry.html
• http://test.uddi.microsoft.com/
• http://udditest.sap.com/

HP Web Service Registry, http://www.hpmiddleware.com/SaISAPI.dll/SaServletEngine.class/products/hp_web_services/registry/default.jsp

Role of UDDI in Web services

• UDDI registries contain general and technical information about businesses and their Web services
• UBR's structure
• White pages - general information: company, name, address, contact info, and identifiers (Data Universal Numbering System - 9 digit numbers assigned to businesses
• Yellow pages - category, companies, and services
• Green pages - technical info about company's products, services, and Web services; references to WSDL documents which contain info on how to use Web services

UDDI V.2 Data Structure Types (http://www.oasis-open.org/committees/uddi-spec/tcspecs.shtml#uddiv2)

v PublisherAssertion

Ø businessEntity

§ businessService

· bindingTemplate

¨ tModel

<businessEntiry businessKey=” …”

operator=”http://www.ibm.com”

authorizedName=”…”

<name> … </name>

<description> … </description>

<contact> … </contact>

<businessServices serviceKey=”…”

businessKey=”…”>

<name>Hello World Web Service</name>

<description>A Web service </description>

<bindingTemplate>

….

<TModel>

…

</Tmodel>

</bindingTemplate>

</businessServices>

<identifierBag>

<keyedReference

Tmodelkey=”…”

name=”D-U-N-S”

value=”…”

</identifierBag>

<catalogBag>

<keyedReference

Tmodelkey=”…”

name=”D-U-N-S”

value=”…”

</catalogBag>

</businessEntity>

v APIs for UDDI Publishing and Inquiry

Ø UDDI API Index: http://www.webservicesportal.it/jeddi/api/index-all.html

Ø http://www.webservicesportal.it/jeddi/api/com/sssw/uddi/api

Ø SUN http://wwws.sun.com/software/xml/developers/uddi/

Microsoft UDDI Developer Web Site

http://uddi.microsoft.com/developer/default.aspx

Programming WebLogic Web Services

http://edocs.bea.com/wls/docs70/webserv/uddi.html

UDDI4J Java Class API,

http://www-124.ibm.com/developerworks/oss/uddi4j/doc.htm

IBM Web Services Tool Kit: http://xml.coverpages.org/ni2001-05-14-b.html

UDDI Resources

http://www.soapclient.com/uddi/resources.html

Other Registry and Discovery Technologies:

• ebXML (Electronic Business XML - http://ebxml.org)
• A joint initiative led by the United Nations Centre for Trade Facilitation and Electronic Business (UN/CEFACT) and the Organization for the Advancement of Structured Information Standards (OASIS)
• 1400 organizations and users
• ebXML registry:
• Collaboration Protocol Profiles (CPPs)
• Collaboration Protocol Agreements (CPAs)
• Data Type Definitions (DTDs)
• Business Process models
• WS-Inspection (Web Services Inspection)
• XML-based discovery technology developed by IBM and Microsoft
• Designed to complement UDDI
• Support only direct discovery

UDDI Demos

• IBM, http://www-3.ibm.com/software/solutions/webservices/demos.html
• WASP UDDI Demo, http://www.systinet.com/doc/wasp_uddi/programmersGuide/DemoIntroduction.html
• Using Client http://www.systinet.com/doc/wasp_jserver/uddiClient/Introduction.html
• IONA, http://www.xmlbus.com/play/

Web References

• http://www.oasis-open.org/cover/uddi.html
• http://www.w3.org/2001/03/WSWS-popa/paper12
• http://www.sun.com/software/xml/developers/uddi/
• http://general.rau.ac.za/infosci/raujournal/default.asp?t0=newsvo12nr4
• http://www.perfectxml.com/WebSvc3.asp
• International Journal of Web Engineering and Technology, http://www.inderscience.com/catalogue/w/ijwet/indexijwet.html
• Using UDDI As a Search Engine, http://www.webservicesarchitect.com/content/articles/siddiqui01.asp
• IBM Web Services and UDDI, http://www-3.ibm.com/services/uddi/
• http://www.sirvisetti.com/corpsite/pr/999362214/index_html