Dynamic Looping to produce date based on input

[arvindnsn]

Hello,

I have a requirement where my pipeline will take 2 input parameters (date type), Start_date and End_date. Based on the input date, i want to generate a list of dates as mentioned below.

For Eg : Start_date = 2019-04-01, End_date = 2019-04-05, I would want downstream output as list of documents or Array( which can be flattened using splitter) as

Start_date = 2019-04-01T00:00:00, End_date = 2019-04-01T23:59:59
Start_date = 2019-04-02T00:00:00, End_date = 2019-04-02T23:59:59
Start_date = 2019-04-03T00:00:00, End_date = 2019-04-03T23:59:59
Start_date = 2019-04-04T00:00:00, End_date = 2019-04-04T23:59:59
Start_date = 2019-04-05T00:00:00, End_date = 2019-04-05T23:59:59

If the both the parameters are null then i would want the below dates as output assuming 2019-04-17T15:50:54 is the current datetime in UTC. Basically the requirement is to take the range of last 4 days from the current date.

Start_date = 2019-04-16T15:50:55, End_date = 2019-04-17T15:50:54
Start_date = 2019-04-15T15:50:55, End_date = 2019-04-16T15:50:54
Start_date = 2019-04-14T15:50:55, End_date = 2019-04-15T15:50:54
Start_date = 2019-04-13T15:50:55, End_date = 2019-04-14T15:50:54

Thanks in advance and really appreciate any help offered.

Thanks
Aravind N

[tstack · Accepted solution]

arvindnsn:

I have a requirement where my pipeline will take 2 input parameters (date type), Start_date and End_date. Based on the input date, i want to generate a list of dates as mentioned below.

I’m attaching a pipeline that I think demonstrates what you’re looking for:

DateLoop_2019_04_17.slp (5.1 KB)

I used a Sequence snap to generate a document for each day and then use some of the Date arithmetic methods to build the desired values in a Mapper.

To compute the difference between the two dates, I used this expression library:

https://raw.githubusercontent.com/SnapLogic/contrib-elib/master/datetime.expr

If you use the library, you probably should download it from that link and place it in the project with the pipeline.

[arvindnsn]

Thanks for the solution. It worked fine.