Implementation of Web Services in Perl by Litis Abraham

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Implementation of Web Services in PerlbyLitis
Abraham Gomathy SankaraCS522 Fall 2001
Semester Project
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Web Services

• Bind applications together over the Internet
• Utilize
• Internet infrastructure
• XML
• Common standards by infrastructure provider
• Rely upon
• SOAP Simple Object Access Protocol
• WSDL Web Services Description Language
• UDDI Universal Discovery, Description and
  Integration

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source - http//www.webservices.org/
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• SOAP Server
• package Worldsub new bless ,
  shiftsub HelloWorld my (self)
  _at__return "Hello World\n"1
• use SOAPTransportHTTPuse
  WorldSOAPTransportHTTPCGI  -gt
  dispatch_to('World')  -gt handle

• SOAP Client
• use SOAPLitemy s SOAPLite   -gturi('Worl
  d')   -gtproxy('http//soapserver.
• mycompany.com/soap/soapserver.cgi')   -gt
  HelloWorld()print s-gtresult()

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SOAP Request

• XML Document that consists of an envelope, header
  body
• lt?xml version"1.0" encoding"UTF-8"?gtltSOAP-ENV
  Envelope xmlnsSOAP-ENC"http//schemas.xmlsoap.o
  rg/soap/encoding/"SOAP-ENVencodingStyle"http//
  schemas.xmlsoap.org/soap/encoding/"
  xmlnsxsi"http//www.w3.org/1999/XMLSchema-instan
  ce"xmlnsSOAP-ENV"http//schemas.xmlsoap.org/soa
  p/envelope/" xmlnsxsd"http//www.w3.org/1999/XML
  Schema"gtltSOAP-ENVBodygtltnamesp1HelloWorld
  xmlnsnamesp1"World"/gtlt/SOAP-ENVBodygtlt/SOAP-EN
  VEnvelopegt

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Conclusion

• Web Services
• Foundation for a paradigm shift in the internet
• Integration of applications regardless of
  languages or platforms
• Perl
• Best suited for building internet applications
• Ideal for text extraction using regular
  expressions

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References

• http//www.activestate.com/Initiatives/WebServices
  /Whitepaper_PerlandWebServices.pdf
• http//builder.cnet.com/webbuilding/0-7704-8-48747
  69-1.html
• http//www.perl.com/pub/a/2001/01/soap.html
• http//cookbook.soaplite.com/
• http//www.webservices.org/article.php?sid377mod
  ethreadorder0
• http//www.xml.com/pub/a/2001/04/04/webservices/in
  dex.html
• http//aspn.activestate.com/ASPN/WebServices/SWSAP
  I/perltut
• http//www.uddi.org/pubs/Iru_UDDI_Technical_White_
  Paper.doc
• http//www.uddi.org/
• http//www.devxpert.com/tutors/uddi/uddi.asp
• http//uddi.microsoft.com/about/default.aspx