DynamicObjectRequest动态对象请求

DynamicObjectRequest动态对象请求

ID:41198889

大小:253.50 KB

页数:48页

时间:2019-08-18

DynamicObjectRequest动态对象请求_第1页
DynamicObjectRequest动态对象请求_第2页
DynamicObjectRequest动态对象请求_第3页
DynamicObjectRequest动态对象请求_第4页
DynamicObjectRequest动态对象请求_第5页
资源描述:

《DynamicObjectRequest动态对象请求》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库

1、DynamicObjectRequestsOutlineMotivatingExamplesDynamicInvocationReflectionDesigningGenericApplications1DynamicObjectRequestsOutlineMotivatingExamplesDynamicInvocationTheCORBADynamicInvocationInterfaceReflectionTheCORBAInterfaceRepositoryDesigningGenericApplicationsUsingCORBA2Dyn

2、amicObjectRequestsMotivation3DynamicObjectRequestsWhatisadynamicrequest?SometimesclientsneedtobebuiltbeforetheirserverinterfacesaredefinedTheyneedtodeferrequestdefinitionuntiltheyareexecutedThesearedynamicrequestsExamples:ObjectbrowserGenericbridgesScriptinglanguageinterpreter4

3、DynamicObjectRequestsMotivatingExample:ObjectBrowserMotivatingExample:GenericBridgeClientORBCoreORBCoreObj.Imp.DSIDIIGenericandrequest-levelbridge6DynamicObjectRequestsCommonalitiesDiscoveryoftypeinformationatrun-timeUseoftypeinformationtobuildclientobjectsthatcancopewithanytyp

4、eofserverobjectsDefinitionofobjectrequestsatrun-timeRequirestwoprimitivesfrommiddleware:DynamicinvocationinterfacesReflectionmechanisms7DynamicObjectRequestsDynamicInvocation8DynamicObjectRequestsDynamicRequests:PrinciplesAnyobjectrequesthastoidentifyserverobjectoperationnameac

5、tualparametersdatastructureforoperationresultInDynamicRequests:serverobjectidentifiedbyobjectreferenceoperationnameidentifiedbystringactualparametersaslistofname/valuepairsoperationresultdeterminedbyanaddress9DynamicObjectRequestsDynamicInvocationClientStubsORBInterfaceImplemen

6、tationSkeletonsClientObjectImplementationORBCoreObjectAdapterDynamicRequestsinCORBADynamicRequestsinCORBADynamicinvocationinterface(DII)supportsdynamiccreationofrequests.Requestsareobjectsthemselves.Requestobjectshaveattributesforoperationname,parametersandresults.Requestobject

7、shaveoperationstochangeoperationparameters,issuetherequestandobtaintherequestresults.11DynamicObjectRequestsDynamicRequestinCORBA:Clientrr:Request:ServerOp()r=create_request(…,”Op”,…)add_arg()invoke()delete()CreatingDynamicCORBARequestsinterfaceObject{ORBstatuscreate_request(in

8、Contextctx,//operationcontextinIdentifieroperation,//o

当前文档最多预览五页,下载文档查看全文

此文档下载收益归作者所有

当前文档最多预览五页,下载文档查看全文
温馨提示:
1. 部分包含数学公式或PPT动画的文件,查看预览时可能会显示错乱或异常,文件下载后无此问题,请放心下载。
2. 本文档由用户上传,版权归属用户,天天文库负责整理代发布。如果您对本文档版权有争议请及时联系客服。
3. 下载前请仔细阅读文档内容,确认文档内容符合您的需求后进行下载,若出现内容与标题不符可向本站投诉处理。
4. 下载文档时可能由于网络波动等原因无法下载或下载错误,付费完成后未能成功下载的用户请联系客服处理。