电子商务10软件设计模式new

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1、E-business第九章—电子商务软件设计模式上海交通大学计算机系吴晨涛wuct@cs.sjtu.edu.cn本章内容只需看上课复习时所提部分2IntroductiontoPatternsUnitObjectivesAftercompletingthisunit,youshouldbeableto:DescribethemostcommonpatternsthatareusedtodevelopWeb-basedapplicationsDifferentiatebetweenthetypesofp

2、atternsthatarepresentedIdentifythetypeofpatternusedtomeetasetofcustomerbusinessrequirementsDescribesomeofthecustompatternsIdentifyhowacustompatternisusedtomeetasetofcustomerbusinessrequirementsDiscusslimitationsandrisksofusingcustompatterns4e-business

3、Solutionse-businesssolutionsallowanorganizationtoleverageWebtechnologiestoreengineerbusinessprocesses,enhancecommunicationsandlowerorganizationalboundarieswiththeircustomersandshareholders(acrosstheInternet),employeesandstakeholders(acrossthecorporateint

4、ranet),anditsvendors,suppliersandpartners(acrossitsextranet).5WhatArePatterns?“Eachpatterndescribesaproblemthatoccursoverandoveragaininourenvironmentandthendescribesthecoreofthesolutiontothatprobleminsuchawaythatyoucanusethissolutionamilliontimesoverwith

5、outeverdoingitthesamewaytwice.”-Dr.ChristopherAlexanderATimelesswayofbuilding6PatternsPatternshelpaddressmanyofthesechallengesrelatedtothesolutiondevelopmentprocess.Itisimportanttorememberthatpatterns:ArenotnewArenotinvented–theyareobservedanddocumented

6、fromextensiveexperienceHelpshortendevelopmentcyclesHelpleverageknowledgeofexperiencedprofessionalsHelppromotereuseofassets7Patternsfore-businessPatternsfore-business:Provideasimpleandconsistentwaytotranslatebusinessprioritiesandrequirementsintotechnic

7、alsolutionsAssistandspeedupthesolutiondevelopmentprocessbyfacilitatingtheassemblyofsolutionandminimizingcustomone-of-a-kindimplementationsCapturetheknowledgeandbestpracticesusedbyexpertsandmakeitavailableforusebyjuniortechnologistsFacilitatethereuseofi

8、ntellectualcapitalsuchasReferenceArchitectures,Frameworksandotherassets8Patternsfore-businessWeintroducefivetypesofPatterns1.BusinessPatterns2.IntegrationPatterns3.CompositePatterns4.ApplicationPatterns5.Runtim