1 / 9

WebTrader: Discovery and Programmed Access to Web-Based Services

WebTrader: Discovery and Programmed Access to Web-Based Services. Venu Vasudevan, Tom Bannon Object Services and Consulting Inc. {venu,bannon}@objs.com. Why Traders?. needs. Document Web. Search Engine. Drivers: e-commerce, web computing. needs. Trader. Service Web.

chase-carson
Download Presentation

WebTrader: Discovery and Programmed Access to Web-Based Services

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. WebTrader: Discovery and Programmed Access to Web-Based Services Venu Vasudevan, Tom Bannon Object Services and Consulting Inc. {venu,bannon}@objs.com

  2. Why Traders? needs Document Web Search Engine Drivers: e-commerce, web computing needs Trader Service Web

  3. Potential Applications • Specialized service brokers • Nomadic applications • Adaptive application architectures

  4. Trader Architecture

  5. Trader Federation

  6. WebTrader Implementation • XML-in-HTML service advertisements • search engine = service offer service • search engine based trader federation • service-to-trader ads • trader-to-trader ads

  7. <interface> <JavaRMI name="RMITimeService"> <derivedFrom interfaceName="Remote"/> <method name="getTime" returnType="String"> <parameter name="timeZone" type="String" direction="in"/> <exception name="RemoteException"/> </method> </JavaRMI> </interface> </TradingAdvertisement> </xml> Example - Client Ad <?xml version="1.0" ?> <!DOCTYPE TradingAdvertisement SYSTEM "http://www.objs.com/WebTrader/TradingAdvert.dtd"> <TradingAdvertisement adType="client"> <searchKeywords> TradingClientAd, c-interface JavaRMI, c-interfaceName RMITimeService, c-derivedFrom Remote, c-clockResolution seconds, c-serviceCost free, </searchKeywords> <metadata> <mustHave> <mdata name="clockResolution" value="seconds"/> </mustHave> <reallyWant> <mdata name="serviceCost" value="free"/> </reallyWant> </metadata>

  8. Example - Service Ad <?xml version="1.0" ?> <!DOCTYPE TradingAdvertisement SYSTEM "http://www.objs.com/WebTrader/TradingAdvert.dtd"> <TradingAdvertisement adType="service"> <searchKeywords> TradingServiceAd, s-interface JavaRMI, s-interfaceName , RMITimeService, s-derivedFrom Remote,s-clockResolution seconds, s-serviceCost free, </searchKeywords> <metadata> <mustHave> <mdata name="clockResolution" value="seconds"/> </mustHave> <reallyWant> <mdata name="serviceCost" value="free"/> </reallyWant> </metadata> <interface> <JavaRMI name="RMITimeService"> <derivedFrom interfaceName="Remote"/> <method name="getTime" returnType="String"> <parameter name="timeZone" type="String" direction="in"/> <exception name="RemoteException"/> </method> <connectPoint uri="rmi://www.objs.com/RMITimeServer"/> </JavaRMI> </interface> </TradingAdvertisement>

  9. Ongoing Work • Trading + Composition + QoS • Adbots - scalable advertisement collection • Ontology-based matchmaking

More Related