微软 Power Apps model drven app 模型驱动应用使用Plugin插件实现业务流程跳转阶段功能

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模型驱动应用使用插件实现跳转业务流程阶段跳转功能

在实际操作中总会遇到使用业务流程的需求，那么如何使用plugin实现跳转阶段的功能呢
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需求背景是主表上有业务流程，子表上有一个选项集字段，选项集字段包含所有的业务流程阶段，在更新子表的选项集时主表的业务流程阶段也需要同步跳转。
由于创建和更新查询不同，所以可以写两个plugin 也可以写在一个中使用message去控制

//创建时执行
if (Context.MessageName=="Create"){//查询刚刚触发创建的业务流程（业务流程实体）string strXml = "<fetch version='1.0' output-format='xml-platform' mapping='logical' distinct='false'>";strXml += "<entity name='new_start'>";strXml += "<attribute name='businessprocessflowinstanceid' />";strXml += "<attribute name='bpf_name' />";strXml += "<attribute name='createdon' />";strXml += "<attribute name='bpf_new_salesopportunityid' />";strXml += "<attribute name='activestageid' />";strXml += "<attribute name='statecode' />";strXml += "<attribute name='statuscode' />";strXml += "<attribute name='createdby' />";strXml += "<attribute name='processid' />";strXml += "<order attribute='bpf_name' descending='false' />";strXml += "<filter type='and'>";strXml += "<condition attribute='businessprocessflowinstanceid' operator='eq' value='" + target.Id + "' />";strXml += "</filter>";strXml += "</entity>";strXml += "</fetch>";EntityCollection start = Service.RetrieveMultiple(new FetchExpression(strXml));if (start.Entities.Count > 0){Entity Entitytag = Service.Retrieve("new_salesopportunity", start.Entities[0].GetAttributeValue<EntityReference>("bpf_new_salesopportunityid").Id, new ColumnSet("new_phase", "new_businesstype"));//如果包含阶段if (Entitytag.Contains("new_phase")){//查询需要跳转的阶段（流程阶段值实体）string StageFetch = "<fetch version='1.0' output-format='xml-platform' mapping='logical' distinct='false'>";StageFetch += "<entity name='processstage'>";StageFetch += "<attribute name='processstageid' />";StageFetch += "<attribute name='processid' />";StageFetch += "<attribute name='stagename' />";StageFetch += "<order attribute='stagename' descending='false' />";StageFetch += "<filter type='and'>";//这里是阶段id 也可以再查一次，这里不大严谨就直接放入了idStageFetch += "<condition attribute='processid' operator='eq' value='{5674a97c-e2d7-4ae6-9dfa-15a8ad0fa340}' />";//根据选项集的name搜索我们要跳转的阶段StageFetch += "<condition attribute='stagename' operator='eq' value='" + Entitytag.GetAttributeValue<EntityReference>("new_phase").Name + "' />";StageFetch += "</filter>";StageFetch += "</entity>";StageFetch += "</fetch>";EntityCollection steges = Service.RetrieveMultiple(new FetchExpression(StageFetch));if (steges.Entities.Count > 0){//修改流程阶段Entity getProcess = new Entity("new_start");getProcess.Id = start.Entities[0].Id;getProcess["activestageid"] = new EntityReference("processstage", steges.Entities[0].Id);//更新流程阶段Service.Update(getProcess);}}}}

下面是update时执行，我把它拆开了

else if (Context.MessageName == "Update"){Entity Entitytag = Service.Retrieve("new_salesopportunity", target.Id, new ColumnSet("new_phase", "new_businesstype"));if (target.Contains("new_phase")){//查询需要跳转的阶段（update时候直接查询流程阶段实体即可）string StageFetch = "<fetch version='1.0' output-format='xml-platform' mapping='logical' distinct='false'>";StageFetch += "<entity name='processstage'>";StageFetch += "<attribute name='processstageid' />";StageFetch += "<attribute name='processid' />";StageFetch += "<attribute name='stagename' />";StageFetch += "<order attribute='stagename' descending='false' />";StageFetch += "<filter type='and'>";StageFetch += "<condition attribute='processid' operator='eq' value='{5674a97c-e2d7-4ae6-9dfa-15a8ad0fa340}' />";StageFetch += "<condition attribute='stagename' operator='eq' value='" + Entitytag.GetAttributeValue<EntityReference>("new_phase").Name + "' />";StageFetch += "</filter>";StageFetch += "</entity>";StageFetch += "</fetch>";EntityCollection steges = Service.RetrieveMultiple(new FetchExpression(StageFetch));if (steges.Entities.Count > 0){//查询触发创建的业务流程string strXml = "<fetch version='1.0' output-format='xml-platform' mapping='logical' distinct='false'>";strXml += "<entity name='new_start'>";strXml += "<attribute name='businessprocessflowinstanceid' />";strXml += "<attribute name='bpf_name' />";strXml += "<attribute name='createdon' />";strXml += "<attribute name='bpf_new_salesopportunityid' />";strXml += "<attribute name='activestageid' />";strXml += "<attribute name='statecode' />";strXml += "<attribute name='statuscode' />";strXml += "<attribute name='createdby' />";strXml += "<attribute name='processid' />";strXml += "<order attribute='bpf_name' descending='false' />";strXml += "<filter type='and'>";strXml += "<condition attribute='bpf_new_salesopportunityid' operator='eq' value='" + target.Id + "' />";strXml += "</filter>";strXml += "</entity>";strXml += "</fetch>";EntityCollection start = Service.RetrieveMultiple(new FetchExpression(strXml));if (start.Entities.Count>0){//修改流程阶段Entity getProcess = new Entity("new_start");getProcess.Id = start.Entities[0].Id;getProcess["activestageid"] = new EntityReference("processstage", steges.Entities[0].Id);//更新流程阶段Service.Update(getProcess);}}}}