Providing and Consuming Web Services in ABAP

55 Pages·2006·1.08 MB·English

Providing and Consuming
Web Services in ABAP
Peter McNulty
SAP NetWeaver Product Management
Agenda
Overview of the Web Service technology
Inside-out approach: Creating a Web Service from existing
business functionality
Demo: Create a Web Service
Consuming a Web Service from an ABAP program
Demo: Consume a Web Service
Summary
© SAP AG2005, SAP TechEd ’05 / CD153 / 2
Agenda
Overview of the Web Service technology
Inside-out approach: Creating a Web Service from existing
business functionality
Demo: Create a Web Service
Consuming a Web Service from an ABAP program
Demo: Consume a Web Service
Summary
© SAP AG2005, SAP TechEd ’05 / CD153 / 3
Web Services Overview: Definition
WEB SERVICES are
SELF CONTAINED
and SELF DESCRIBING
APPLICATION FUNCTIONALITIES
that can be
PROCESSED
through
OPEN INTERNET STANDARDS
© SAP AG2005, SAP TechEd ’05 / CD153 / 4
Web Services Overview: The Nature of Web Services
Web Services
act like a black-box that may require input and deliver
a result
work on top of any communication technology stack
can be published, discovered and invoked based on open
technology standards
work in synchronous and asynchronous scenarios
facilitate integration within an enterprise as well as cross
enterprises
© SAP AG2005, SAP TechEd ’05 / CD153 / 5
Web Services Overview: The Paradigm
UDDI
UDDI
Service Directory
2 1
(cid:132) Discover Web service Direct WSDL exchange (cid:132) Create Web service
(cid:132) Develop Client App
(cid:132) Create WSDL
(cid:132) Publish WSDL (opt.)
WSDL
WSDL
Document
Document
Web service
e
c
Client vi
r
e
s
b
e
W
SOAP
Bus. Functionality
(cid:132) Web service Execution
Web service Provider
3
© SAP AG2005, SAP TechEd ’05 / CD153 / 6
Web Services Overview: Examples
(cid:132) Intelligent product catalog search (cid:132) Publish and analyze financial
reports (XBRL based)
(cid:132) Product availability check
(cid:132) Electronic bill presentment and
(cid:132) Pricing inquiry
payment
(cid:132) Customer credit check
(cid:132) Matching vacancies and job
applicants profiles
(cid:132) Order status check
(cid:132) Postal service address check
(cid:132) Vendor managed inventory
Demand forecasts, stock (cid:132) UDDI registration and discovery
(cid:139)
replenishment …
(cid:132) Automated web searches
(cid:132) Dynamic auctioning and bidding
(Google)
© SAP AG2005, SAP TechEd ’05 / CD153 / 7
Web Services Overview:
Example Get Employee Address Info
Manager Company Service Provider
CRM
Get
Employee
Employee
Portal
Contact
Address
iView
Information
Information
Archiving
Database
HR
Private
Address
= Web Service
© SAP AG2005, SAP TechEd ’05 / CD153 / 8
Web Services Overview: Fundamental Elements of the
complete Web Service Solution
Open Technology
Standards for Web
Services
Referent
XML, WSDL, SOAP, UDDI, WSI
to business
semantics
RosettaNet,
Spec2000,
HR-XML,
Web Service XBRL, IFX,
Technology papiNet,
....
SAP NetWeaver
© SAP AG2005, SAP TechEd ’05 / CD153 / 9
Web Services Overview: Standards – Overview
Examples for Supported
Standards in SAP NetWeaver
(cid:132) W3C
(cid:139) SOAP 1.1
(cid:139) WSDL 1.1
(cid:139) XML Schema
(cid:139) XML Signature
(cid:139) XSL
(cid:132) BPML
(cid:132) SAP NetWeaver is based on
(cid:132) CIM
Open Standards
(cid:132) OASIS
(cid:139) SAML
(cid:139) UBL
(cid:132) SAP NetWeaver Supports
(cid:139) UDDI 2.0 / 3.0
Standards on Technology, (cid:139) WSRP
Framework and Business Level (cid:139) WS-Security
(cid:139) XML.org
(cid:132) Wf-XML
(cid:132) WS-I
(cid:132) Built on a consistent technology
(cid:139) Basic Profile 1.0
and application stack
(cid:132) XMLA
(cid:132) UDDI4J
(cid:132) JAX-RPC
(cid:132) JAXM
(cid:132) … and many others
© SAP AG2005, SAP TechEd ’05 / CD153 / 10