Retrieving viz DAX

AlexisOlson I am building a data-model called model2, needs to query the viz1 in model1 which essentially becomes the datasource (let's call it src1Model2) for model2 that I am developing.

model2 has additional datasource (dim and fact) that needs to be data-modelled with src1Model2 table according to the business req/ stakeholder req downstream consumption (completely separate from downstrream consumption req of model1).

Model1 and subsequently viz1 is developed by different team and they are using implicit measure in viz1 which I can't influence and/control. So if they had originally used an explicit measure called  tradeLoss = SUM(table[tradeLoss]) and changed to tradeLoss = MAX(table[tradeLoss]) , it would have not have made any difference to my query, cause on both days I am querying the viz like this and whether tradeLoss is SUM today, MAX tomorrow, MIN the day after, it does not put src1Model2 datasource at risk and the data I am querying would always be same as viz (i.e. src1Model2= viz1)

SUMMARIZE(dim1[field1],dim2[field2],"loss",[tradeLoss])

 However, if implicit measure is used, the engine changes the background query based on the implicit calculation that gets changed, so if implict SUM is used today then engine generates

SUMMARIZE(dim1[field1],dim2[field2],"loss",calculate(sum(table[tradeLoss]

 if implict MAX is used tomorrow then engine generates

SUMMARIZE(dim1[field1],dim2[field2],"loss",calculate(max(table[tradeLoss]

 which means I need to manually check if the SUM from yesterday got changed to MAX today. IF yes, I need to manually account for that change in the SSAS query that updates/refreshes src1Model2 adatsource.

Think of this problem, as retrieving data from World Bank. Imagine WB is using data from different sources (fact and dim) to generate a view of GDP by country. I need to write a query to get daily GDP data to be utilized in model2. Now, WB provides web service through REST API that enables me to query daily GDP data. Example

https://search.worldbank.org/api/v2/wds?format=xml&count_exact=Algeria&fl=count,volnb,totvolnb,docna,repnme

But if WB had used Power BI to generate GDP view, I would have required the same DAX query that powers the GDP viz to give me the daily GDP data unless there is web service (API) currently provided by POWER BI that returns me the same data in viz1 in page1/tabl1 of report1 of dataset1 of workspace1 without requiring to know the back ground dax.

//pseudo API
https:app.powerbi.com/groups/{groupID}? format=xml&page=1&viz=table