The business of aggregate requires that aggregator could aggregate many business objects concurrently and different business object ' s properties and temporal variables could be data sources . the aggregate process may be a simple statistical calculate process with filter conditions or a complex calculate process . it requires that the aggregator could control the process of aggregate which implements it step by step and the following steps are relative with the results of previous steps 匯集的業(yè)務(wù)需求為:針對(duì)動(dòng)態(tài)確定的kpi指標(biāo)實(shí)際值,能夠以各種業(yè)務(wù)對(duì)象的屬性、中間變量數(shù)據(jù)為數(shù)據(jù)源進(jìn)行匯集,并且是能對(duì)多個(gè)業(yè)務(wù)對(duì)象同時(shí)進(jìn)行:匯集變換可能是具有篩選條件的簡單統(tǒng)計(jì)計(jì)算或復(fù)雜計(jì)算;匯集變換要求能夠?qū)R集過程進(jìn)行控制,即匯集是分步實(shí)現(xiàn)的,并且后續(xù)步驟的進(jìn)行與已完成步驟的結(jié)果相關(guān)。