Created
June 4, 2019 07:03
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DataFrame.transform - Spark Function Composition - final functions examples
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| // chain transform calls | |
| dfTransactions | |
| .transform(extractPayerBeneficiary("details")) | |
| .transform(sumAmounts(date_trunc("day", col("ts")), col("details_beneficiary"))) | |
| // andThen | |
| dfTransactions | |
| .transform(extractPayerBeneficiary("details") andThen sumAmounts(date_trunc("day", col("ts")), col("details_beneficiary"))) | |
| // compose | |
| dfTransactions | |
| .transform(sumAmounts(date_trunc("day", col("ts")), col("details_beneficiary")) compose extractPayerBeneficiary("details")) | |
| // Function.chain | |
| dfTransactions | |
| .transform(Function.chain(List(extractPayerBeneficiary("details"), sumAmounts(date_trunc("day", col("ts")), col("details_beneficiary"))))) |
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