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Merged
merged 3 commits into from
Jul 3, 2025
Merged

Parse String to UUID #1006 #1287

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e41f337
Parse String to UUID #1006
EmmanuelBerkowicz Jun 29, 2025
8f194d5
Parse String to UUID #1006_RevB
EmmanuelBerkowicz Jul 1, 2025
a9d7e91
Parse String to UUID #1006
EmmanuelBerkowicz Jul 3, 2025
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16 changes: 16 additions & 0 deletions core/src/main/kotlin/org/jetbrains/kotlinx/dataframe/impl/api/parse.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -49,6 +49,7 @@ import java.time.format.DateTimeFormatterBuilder
import java.time.temporal.Temporal
import java.time.temporal.TemporalQuery
import java.util.Locale
import java.util.UUID
import kotlin.properties.Delegates
import kotlin.reflect.KClass
import kotlin.reflect.KType
Expand Down Expand Up @@ -491,6 +492,21 @@ internal object Parsers : GlobalParserOptions {
posixParserToDoubleWithOptions,
// Boolean
stringParser<Boolean> { it.toBooleanOrNull() },
// UUID
stringParser<UUID> { str ->

val uuidRegex = Regex("[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}")

if (uuidRegex.matches(str)) {
try {
UUID.fromString(str)
} catch (e: IllegalArgumentException) {
null
}
} else {
null
}
},
// BigInteger
stringParser<BigInteger> { it.toBigIntegerOrNull() },
// BigDecimal
Expand Down
23 changes: 23 additions & 0 deletions core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/api/parse.kt
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Expand Up @@ -2,6 +2,7 @@ package org.jetbrains.kotlinx.dataframe.api

import io.kotest.matchers.should
import io.kotest.matchers.shouldBe
import io.kotest.matchers.shouldNotBe
import kotlinx.datetime.DateTimeUnit
import kotlinx.datetime.Instant
import kotlinx.datetime.LocalDate
Expand All @@ -18,6 +19,7 @@ import org.jetbrains.kotlinx.dataframe.impl.catchSilent
import org.jetbrains.kotlinx.dataframe.type
import org.junit.Test
import java.util.Locale
import java.util.UUID
import kotlin.random.Random
import kotlin.reflect.typeOf
import kotlin.time.Duration
Expand Down Expand Up @@ -481,6 +483,27 @@ class ParseTests {
df.parse()
}

@Test
fun `parse valid UUID`() {
val uuidString = "550e8400-e29b-41d4-a716-446655440000"
val column by columnOf(uuidString)
val parsed = column.parse()

parsed.type() shouldBe typeOf<UUID>()
(parsed[0] as UUID).toString() shouldBe uuidString
}

@Test
fun `parse invalid UUID`(){
val invalidUUID = "this is not a UUID"
val column = columnOf(invalidUUID)
val parsed = column.tryParse() // tryParse as string is not formatted.

parsed.type() shouldNotBe typeOf<UUID>()
parsed.type() shouldBe typeOf<String>()
}


/**
* Asserts that all elements of the iterable are equal to each other
*/
Expand Down