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《(計(jì)算機(jī)軟件與理論專業(yè)論文)基于bpel4ws和語(yǔ)義的動(dòng)態(tài)web服務(wù)組合框架》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫(kù)。
1、摘要隨著Web服務(wù)技術(shù)的發(fā)展,面向服務(wù)架構(gòu)(SOA)已經(jīng)從一個(gè)難以實(shí)現(xiàn)的設(shè)計(jì)理念逐漸變?yōu)闃I(yè)務(wù)解決方案中重要的設(shè)計(jì)方法。然而,只有能夠?qū)F(xiàn)有服務(wù)進(jìn)行靈活組合才能真正發(fā)揮SOA的優(yōu)勢(shì)。商業(yè)流程執(zhí)行語(yǔ)言(BPEL4ws)已經(jīng)成為定義商業(yè)流程和業(yè)務(wù)交互協(xié)議的標(biāo)準(zhǔn)語(yǔ)言。但是,目前創(chuàng)建商業(yè)流程的方法仍停留在靜態(tài)設(shè)計(jì)階段,不能夠靈活應(yīng)對(duì)業(yè)務(wù)變化。本文詳細(xì)介紹一種基于BPEL4WS和語(yǔ)義的動(dòng)態(tài)Web服務(wù)組合框架。在這個(gè)框架中,抽象流程模板被用來(lái)描述Web服務(wù)之問(wèn)的交互及業(yè)務(wù)協(xié)議。框架還定義了兩個(gè)語(yǔ)義元數(shù)據(jù)描述語(yǔ)言:商業(yè)
2、流程元數(shù)據(jù)語(yǔ)言和Web服務(wù)元數(shù)據(jù)語(yǔ)言,它們分別被用來(lái)描述抽象流程模板和wcb服務(wù)的語(yǔ)義元數(shù)據(jù)。通過(guò)商業(yè)流程模板和W曲服務(wù)之間語(yǔ)義元數(shù)據(jù)的匹配,滿足業(yè)務(wù)需求的Web服務(wù)能夠被有效地選擇。最后通過(guò)動(dòng)態(tài)Web服務(wù)綁定,被選擇的W曲服務(wù)能夠被組合到流程當(dāng)中。考慮到現(xiàn)實(shí)當(dāng)中不同的服務(wù)提供商可能使用不同的本體來(lái)描述語(yǔ)義元數(shù)據(jù),我們也將對(duì)基于相似度的多本體匹配技術(shù)進(jìn)行討論。本文所闡述的Web服務(wù)組合框架基于工業(yè)標(biāo)準(zhǔn),因此能夠更容易地被用在解決方案當(dāng)中提高BPEuWS商業(yè)流程的應(yīng)變能力。關(guān)鍵詞:Web服務(wù)商業(yè)流程執(zhí)行語(yǔ)
3、言商業(yè)流程元數(shù)據(jù)語(yǔ)言Web服務(wù)元數(shù)據(jù)語(yǔ)言本體知識(shí)水壩@damdocAbstractWiththeadventofW曲services,theServiceOrientedArchitecture(sOA)hasevolvedfromanunreachablehopetoapracticaldesignmethodologyinbusinesssolutions.However,therealadvantagesofSOAcannotbetakenunlessdifferentservicescanbef
4、lexiblycomposed.TheBusinessProcessExecutionLanguageforWebServices(BPEL4WS)hasbecomethedefactostandardlanguagefordescribingbusinessprocessesandbusinessinteractionprotocols.ButcurrentBPEL4WSbusinessprocessescanonlybedesignedstatically,whichhasgreatlylimite
5、dtheadaptabilitytothebusinesschanges.融dissertationdeliversadetailedintroductionofadynamicwebservicescompositionframeworkbased011BPEL4WSandsemantics.Inthisframework,theProcessTemplate(APT)describestheinteractionandbusinessprotocolsamongdifferentwebservice
6、s.Theframeworkalsodefinestwosemanticmetadatadescriptionlanguages:theBusinessProcessMetadataLanguage(BPMtL)andWebServiceMetadataLanguage(WSMtL),whichutiu躑semanticwebtechnologiestodescribethesemanticmetadataofAPTandwebservices,respectively.Throughthematchm
7、akingofthesemanticmetadata,thewebservicesqualifiedforthebusinessrequirementscaneffectivelybeselected.Atlast,theselectedservicesarecomposedintobusinessprocessesthroughwebservicebinding.Consideringthatdifferentontologiescanbeusedbydifferentserviceproviders
8、,thesimilaritybasedmnlti-ontologymatchmakingtechniqueisalsoinvestigated.Thewebservicecompositionframeworkillustratedinthisdissertationisbasedonindustrystandards,andthuscanbemoreeasilyimplementedintobusinesssolutionstoimpro