org.apache.spark.sql.types

Class UTF8String

Object

org.apache.spark.sql.types.UTF8String

All Implemented Interfaces:

java.io.Serializable, Comparable<UTF8String>, scala.math.Ordered<UTF8String>

public final class UTF8String
extends Object
implements scala.math.Ordered<UTF8String>, scala.Serializable

:: DeveloperApi :: A UTF-8 String, as internal representation of StringType in SparkSQL

A String encoded in UTF-8 as an Array[Byte], which can be used for comparison, search, see http://en.wikipedia.org/wiki/UTF-8 for details.

Note: This is not designed for general use cases, should not be used outside SQL.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
UTF8String()

Method Summary

Methods

Modifier and Type	Method and Description
static UTF8String	apply(byte[] bytes) Create a UTF-8 String from Array[Byte], which should be encoded in UTF-8
static UTF8String	apply(String s) Create a UTF-8 String from String
static int[]	bytesOfCodePointInUTF8()
UTF8String	clone()
int	compare(UTF8String other)
int	compareTo(UTF8String other)
boolean	contains(UTF8String sub)
boolean	endsWith(UTF8String suffix)
boolean	equals(Object other)
byte[]	getBytes()
int	hashCode()
int	length() Return the number of code points in it.
UTF8String	set(byte[] bytes) Update the UTF8String with Array[Byte], which should be encoded in UTF-8
UTF8String	set(String str) Update the UTF8String with String.
UTF8String	slice(int start, int until) Return a substring of this,
boolean	startsWith(UTF8String prefix)
UTF8String	toLowerCase()
String	toString()
UTF8String	toUpperCase()

Methods inherited from class Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface scala.math.Ordered

$greater, $greater$eq, $less, $less$eq

Constructor Detail

UTF8String

public UTF8String()

Method Detail

bytesOfCodePointInUTF8

public static int[] bytesOfCodePointInUTF8()

apply

public static UTF8String apply(String s)

Create a UTF-8 String from String

Parameters:

s - (undocumented)

Returns:

(undocumented)

apply

public static UTF8String apply(byte[] bytes)

Create a UTF-8 String from Array[Byte], which should be encoded in UTF-8

Parameters:

bytes - (undocumented)

Returns:

(undocumented)

set

public UTF8String set(String str)

Update the UTF8String with String.

Parameters:

str - (undocumented)

Returns:

(undocumented)

set

public UTF8String set(byte[] bytes)

Update the UTF8String with Array[Byte], which should be encoded in UTF-8

Parameters:

bytes - (undocumented)

Returns:

(undocumented)

length

public int length()

Return the number of code points in it.

This is only used by Substring() when start is negative.

Returns:

(undocumented)

getBytes

public byte[] getBytes()

slice

public UTF8String slice(int start,
               int until)

Return a substring of this,

Parameters:

start - the position of first code point

until - the position after last code point

Returns:

(undocumented)

contains

public boolean contains(UTF8String sub)

startsWith

public boolean startsWith(UTF8String prefix)

endsWith

public boolean endsWith(UTF8String suffix)

toUpperCase

public UTF8String toUpperCase()

toLowerCase

public UTF8String toLowerCase()

toString

public String toString()

Overrides:

toString in class Object

clone

public UTF8String clone()

Overrides:

clone in class Object

compare

public int compare(UTF8String other)

Specified by:

compare in interface scala.math.Ordered<UTF8String>

compareTo

public int compareTo(UTF8String other)

Specified by:

compareTo in interface Comparable<UTF8String>

Specified by:

compareTo in interface scala.math.Ordered<UTF8String>

equals

public boolean equals(Object other)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object