JBPM 6 开发者指南 Chapter 7

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1、Chapter7.DefiningYourEnvironmentwiththeRuntimeManagerBynow,wehaveseenthetwomaincomponentsofajBPM6runtime,theKIEsessionandtheHumantaskservice.Thesecomponentsareprovidedasthebasiccomponentsneededtorunprocessinteractionsbetweenhumansandsystems.Astheresponsibilitiesoftheprocess

2、runtimegrows,connectorstoexternalsystemsshouldbeaddedtotransformtheprocessengineintoahighlyconfigurableenterpriseintegrationplatform,wherecoordinationbetweendifferentsystemscanbeeasilymanagedinabusiness-friendlyway.Theentireconfigurationinvolvedincreatingaruntimefortheproce

3、ssengine,theHumantaskcomponent,andalltheexternalsystemsconnectorscouldbecomecumbersomeifnotmanagedinasingleplace.Inthischapter,wewilllearnabouttheruntimemanagercomponent,whichisdesignedtocreateabridgebetweenallthecomponentsandconfigurationsinvolvedinaprocessexecution.Thisco

4、mponentcanbeusedtocreateafullruntimefortheprocessengine.Forthischapter,ourgoalswillbeasfollows:UnderstandtheroleoftheruntimemanagerinthejBPM6architectureGetfamiliarwiththeavailableruntimemanagersandinterfacesStartextendingtheAPItocreateourowncustomruntimemanagersUnderstandi

5、ngtheroleoftheruntimemanagerTheruntimemanager’smainroleinanapplicationistoprovideanapplication-widepointtoaccessprocessruntimes(allthenecessaryinterconnectedservicestoexecuteaprocessexecutionwithinaspecificdomain).Thenatureofthoseruntimesandhowmanydifferentruntimescanexisti

6、naparticulardomainisadecisionthateachoftheruntimemanagerimplementationsavailablehastomake.Bydefault,aruntimewillbecomposedoftwomaincomponents:theKIEsessionwheretheprocessisexecutedandtheHumantaskcomponentwherehumantaskswillbehandled.Botharegroupedandreturnedfromtheruntimema

7、nagerthroughtheRuntimeEngineinterface:publicinterfaceRuntimeManager{RuntimeEnginegetRuntimeEngine(Contextcontext);voiddisposeRuntimeEngine(RuntimeEngineengine);StringgetIdentifier();voidclose();}publicinterfaceRuntimeEngine{KieSessiongetKieSession();TaskServicegetTaskSer

8、vice();}Runtimemanagerswillreturnaspecificnumberofruntimeengines,dependingontheirs