func test4() {
reg, err := regexp.Compile("[^A-Za-z0-9]+")
if err != nil {
log.Fatal(err)
}
tokenizer := func(line string, ch chan string) {
line = reg.ReplaceAllString(line, "-")
for _, token := range strings.Split(line, "-") {
ch <- strings.ToLower(token)
}
}
ctx := flame.NewContext()
leftWords := ctx.TextFile(
"/etc/passwd", 3,
).Map(tokenizer).Map(func(t string) (string, int) {
return t, 1
}).Sort(nil).LocalReduceByKey(func(x, y int) int {
return x + y
})
rightWords := ctx.TextFile(
"word_count.go", 3,
).Map(tokenizer).Map(func(t string) (string, int) {
return t, 1
}).Sort(nil).LocalReduceByKey(func(x, y int) int {
return x + y
})
leftWords.Join(rightWords).Map(func(key string, left, right int) {
println(key, ":", left, ":", right)
})
}
func test2() {
flame.NewContext().TextFile(
"/etc/hosts", 7,
).Partition(
2,
).Map(func(line string) string {
return line
}).Sort(func(a string, b string) bool {
if strings.Compare(a, b) < 0 {
return true
}
return false
}).Map(func(line string) {
println(line)
})
}
func test3() {
words := flame.NewContext().TextFile(
"/etc/passwd", 3,
).Filter(func(line string) bool {
return !strings.HasPrefix(line, "#")
}).Map(func(line string, ch chan string) {
for _, token := range strings.Split(line, ":") {
ch <- token
}
}).Map(func(line string) (string, string) {
return line, line
})
words.Join(words).Map(func(key, left, right string) {
println(key, ":", left, ":", right)
})
}
func test1() {
flame.NewContext().TextFile(
"/etc/passwd", 1,
).Filter(func(line string) bool {
// println("filter:", line)
return !strings.HasPrefix(line, "#")
}).Map(func(line string, ch chan string) {
for _, token := range strings.Split(line, ":") {
ch <- token
}
}).Map(func(key string) int {
// println("map:", key)
return 1
}).Reduce(func(x int, y int) int {
// println("reduce:", x+y)
return x + y
}).Map(func(x int) {
println("count:", x)
})
}
