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(
# prepare python udf
(let str (DataType 'String))
(let tupleType (TupleType str str))
(let udfType (CallableType '() '(tupleType) '(str) '(str)))
(let udfScript (String '@@
def MyTuple(one, two):
return (one, two)
@@))
(let udf (ScriptUdf 'Python3 'MyTuple udfType udfScript))
(let mr_source (DataSource 'yt 'plato))
(let x (Read! world mr_source (Key '('table (String 'Input))) (Void) '()))
(let world (Left! x))
(let table1 (Right! x))
(let singleKeySelector (lambda '(x) (Member x 'key)))
(let multiKeySelector (lambda '(x) '((Member x 'key) (Member x 'subkey))))
(let tupleKeySelector (lambda '(x) (Apply udf (Member x 'key) (Member x 'subkey))))
(let calcKeySelector (lambda '(x) (Concat (Member x 'key) (Member x 'subkey))))
(let singleDirAsc (Bool 'true))
(let singleDirDesc (Bool 'false))
(let multiDirAsc '((Bool 'true) (Bool 'true)))
(let multiDirDesc '((Bool 'false) (Bool 'false)))
(let singleSortKeySelector (lambda '(item) (Member item 'subkey)))
(let multiSortKeySelector (lambda '(item) '((Member item 'subkey) (Member item 'value))))
(let tupleSortKeySelector (lambda '(item) (Apply udf (Member item 'subkey) (Member item 'value))))
(let calcSortKeySelector (lambda '(item) (Concat (Member item 'subkey) (Member item 'value))))
(let res_sink (DataSink 'result))
(let macro (lambda '(world keySelector sortDir sortKeySelector) (block '(
(let res (PartitionByKey table1 keySelector sortDir sortKeySelector (lambda '(stream) (FlatMap stream (lambda '(pair) (Nth pair '1))))))
(let res (Sort res '((Bool 'true) (Bool 'true)) (lambda '(item) '((Member item 'key) (Member item 'subkey)))))
(let world (Write! world res_sink (Key) res '()))
(return world)
))))
(let world (Apply macro world singleKeySelector singleDirAsc singleSortKeySelector))
(let world (Apply macro world singleKeySelector singleDirDesc singleSortKeySelector))
(let world (Apply macro world singleKeySelector multiDirAsc multiSortKeySelector))
(let world (Apply macro world singleKeySelector multiDirDesc multiSortKeySelector))
(let world (Apply macro world singleKeySelector multiDirAsc tupleSortKeySelector))
(let world (Apply macro world singleKeySelector singleDirAsc calcSortKeySelector))
(let world (Apply macro world multiKeySelector singleDirAsc singleSortKeySelector))
(let world (Apply macro world multiKeySelector singleDirDesc singleSortKeySelector))
(let world (Apply macro world multiKeySelector multiDirAsc multiSortKeySelector))
(let world (Apply macro world multiKeySelector multiDirDesc multiSortKeySelector))
(let world (Apply macro world multiKeySelector multiDirAsc tupleSortKeySelector))
(let world (Apply macro world multiKeySelector singleDirAsc calcSortKeySelector))
(let world (Apply macro world tupleKeySelector singleDirAsc singleSortKeySelector))
(let world (Apply macro world tupleKeySelector singleDirDesc singleSortKeySelector))
(let world (Apply macro world tupleKeySelector multiDirAsc multiSortKeySelector))
(let world (Apply macro world tupleKeySelector multiDirDesc multiSortKeySelector))
(let world (Apply macro world tupleKeySelector multiDirAsc tupleSortKeySelector))
(let world (Apply macro world tupleKeySelector singleDirAsc calcSortKeySelector))
(let world (Apply macro world calcKeySelector singleDirAsc singleSortKeySelector))
(let world (Apply macro world calcKeySelector singleDirDesc singleSortKeySelector))
(let world (Apply macro world calcKeySelector multiDirAsc multiSortKeySelector))
(let world (Apply macro world calcKeySelector multiDirDesc multiSortKeySelector))
(let world (Apply macro world calcKeySelector multiDirAsc tupleSortKeySelector))
(let world (Apply macro world calcKeySelector singleDirAsc calcSortKeySelector))
(let world (Commit! world res_sink))
(return world)
)
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