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[SPARK-8431][SparkR] Add in operator to DataFrame Column in SparkR #6941

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[SPARK-8431][SparkR] Add in operator to DataFrame Column in SparkR #6941

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c196173
[SPARK-8431][SparkR] Add in operator to DataFrame Column in SparkR
yu-iskw Jun 22, 2015
6e37936
Modify a variable name
yu-iskw Jun 22, 2015
f4309a7
Make a `setMethod` for `%in%` be independent
yu-iskw Jun 22, 2015
1f64423
Modify the comment
yu-iskw Jun 23, 2015
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16 changes: 16 additions & 0 deletions R/pkg/R/column.R
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Original file line number Diff line number Diff line change
Expand Up @@ -210,6 +210,22 @@ setMethod("cast",
}
})

#' Match a column with given values.
#'
#' @rdname column
#' @return a matched values as a result of comparing with given values.
#' \dontrun{
#' filter(df, "age in (10, 30)")
#' where(df, df$age %in% c(10, 30))
#' }
setMethod("%in%",
signature(x = "Column"),
function(x, table) {
table <- listToSeq(as.list(table))
jc <- callJMethod(x@jc, "in", table)
return(column(jc))
})

#' Approx Count Distinct
#'
#' @rdname column
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10 changes: 10 additions & 0 deletions R/pkg/inst/tests/test_sparkSQL.R
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Expand Up @@ -693,6 +693,16 @@ test_that("filter() on a DataFrame", {
filtered2 <- where(df, df$name != "Michael")
expect_true(count(filtered2) == 2)
expect_true(collect(filtered2)$age[2] == 19)

# test suites for %in%
filtered3 <- filter(df, "age in (19)")
expect_equal(count(filtered3), 1)
filtered4 <- filter(df, "age in (19, 30)")
expect_equal(count(filtered4), 2)
filtered5 <- where(df, df$age %in% c(19))
expect_equal(count(filtered5), 1)
filtered6 <- where(df, df$age %in% c(19, 30))
expect_equal(count(filtered6), 2)
})

test_that("join() on a DataFrame", {
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