io.prestosql.operator.scalar

Class StringFunctions

java.lang.Object

io.prestosql.operator.scalar.StringFunctions

public final class StringFunctions
extends Object

Current implementation is based on code points from Unicode and does ignore grapheme cluster boundaries. Therefore only some methods work correctly with grapheme cluster boundaries.

Method Summary

Modifier and Type	Method and Description
static int[]	castCharToCodePoints(Long charLength, io.airlift.slice.Slice slice)
static int[]	castVarcharToCodePoints(io.airlift.slice.Slice slice)
static io.airlift.slice.Slice	charLeftTrim(io.airlift.slice.Slice slice)
static io.airlift.slice.Slice	charLeftTrim(io.airlift.slice.Slice slice, int[] codePointsToTrim)
static long	charLength(long x, io.airlift.slice.Slice slice)
static io.airlift.slice.Slice	charLower(io.airlift.slice.Slice slice)
static io.airlift.slice.Slice	charRightTrim(io.airlift.slice.Slice slice)
static io.airlift.slice.Slice	charRightTrim(io.airlift.slice.Slice slice, int[] codePointsToTrim)
static io.airlift.slice.Slice	charSubstr(io.airlift.slice.Slice utf8, long start)
static io.airlift.slice.Slice	charSubstr(io.airlift.slice.Slice utf8, long start, long length)
static io.airlift.slice.Slice	charTrim(io.airlift.slice.Slice slice)
static io.airlift.slice.Slice	charTrim(io.airlift.slice.Slice slice, int[] codePointsToTrim)
static io.airlift.slice.Slice	charUpper(io.airlift.slice.Slice slice)
static io.airlift.slice.Slice	chr(long codepoint)
static long	codepoint(io.airlift.slice.Slice slice)
static io.airlift.slice.Slice	concat(Long x, io.airlift.slice.Slice left, io.airlift.slice.Slice right)
static io.airlift.slice.Slice	fromUtf8(io.airlift.slice.Slice slice)
static io.airlift.slice.Slice	fromUtf8(io.airlift.slice.Slice slice, long replacementCodePoint)
static io.airlift.slice.Slice	fromUtf8(io.airlift.slice.Slice slice, io.airlift.slice.Slice replacementCharacter)
static long	hammingDistance(io.airlift.slice.Slice left, io.airlift.slice.Slice right)
static io.airlift.slice.Slice	leftPad(io.airlift.slice.Slice text, long targetLength, io.airlift.slice.Slice padString)
static io.airlift.slice.Slice	leftTrim(io.airlift.slice.Slice slice)
static io.airlift.slice.Slice	leftTrim(io.airlift.slice.Slice slice, int[] codePointsToTrim)
static long	length(io.airlift.slice.Slice slice)
static long	levenshteinDistance(io.airlift.slice.Slice left, io.airlift.slice.Slice right)
static io.airlift.slice.Slice	lower(io.airlift.slice.Slice slice)
static io.airlift.slice.Slice	normalize(io.airlift.slice.Slice slice, io.airlift.slice.Slice form)
static io.airlift.slice.Slice	replace(io.airlift.slice.Slice str, io.airlift.slice.Slice search)
static io.airlift.slice.Slice	replace(io.airlift.slice.Slice str, io.airlift.slice.Slice search, io.airlift.slice.Slice replace)
static io.airlift.slice.Slice	reverse(io.airlift.slice.Slice slice)
static io.airlift.slice.Slice	rightPad(io.airlift.slice.Slice text, long targetLength, io.airlift.slice.Slice padString)
static io.airlift.slice.Slice	rightTrim(io.airlift.slice.Slice slice)
static io.airlift.slice.Slice	rightTrim(io.airlift.slice.Slice slice, int[] codePointsToTrim)
static Block	split(io.airlift.slice.Slice string, io.airlift.slice.Slice delimiter)
static Block	split(io.airlift.slice.Slice string, io.airlift.slice.Slice delimiter, long limit)
static io.airlift.slice.Slice	splitPart(io.airlift.slice.Slice string, io.airlift.slice.Slice delimiter, long index)
static long	stringPosition(io.airlift.slice.Slice string, io.airlift.slice.Slice substring)
static io.airlift.slice.Slice	substr(io.airlift.slice.Slice utf8, long start)
static io.airlift.slice.Slice	substr(io.airlift.slice.Slice utf8, long start, long length)
static io.airlift.slice.Slice	toUtf8(io.airlift.slice.Slice slice)
static io.airlift.slice.Slice	trim(io.airlift.slice.Slice slice)
static io.airlift.slice.Slice	trim(io.airlift.slice.Slice slice, int[] codePointsToTrim)
static io.airlift.slice.Slice	upper(io.airlift.slice.Slice slice)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

chr

public static io.airlift.slice.Slice chr(long codepoint)

codepoint

public static long codepoint(io.airlift.slice.Slice slice)

length

public static long length(io.airlift.slice.Slice slice)

charLength

public static long charLength(long x,
                              io.airlift.slice.Slice slice)

replace

public static io.airlift.slice.Slice replace(io.airlift.slice.Slice str,
                                             io.airlift.slice.Slice search)

replace

public static io.airlift.slice.Slice replace(io.airlift.slice.Slice str,
                                             io.airlift.slice.Slice search,
                                             io.airlift.slice.Slice replace)

reverse

public static io.airlift.slice.Slice reverse(io.airlift.slice.Slice slice)

stringPosition

public static long stringPosition(io.airlift.slice.Slice string,
                                  io.airlift.slice.Slice substring)

substr

public static io.airlift.slice.Slice substr(io.airlift.slice.Slice utf8,
                                            long start)

charSubstr

public static io.airlift.slice.Slice charSubstr(io.airlift.slice.Slice utf8,
                                                long start)

substr

public static io.airlift.slice.Slice substr(io.airlift.slice.Slice utf8,
                                            long start,
                                            long length)

charSubstr

public static io.airlift.slice.Slice charSubstr(io.airlift.slice.Slice utf8,
                                                long start,
                                                long length)

split

public static Block split(io.airlift.slice.Slice string,
                          io.airlift.slice.Slice delimiter)

split

public static Block split(io.airlift.slice.Slice string,
                          io.airlift.slice.Slice delimiter,
                          long limit)

splitPart

public static io.airlift.slice.Slice splitPart(io.airlift.slice.Slice string,
                                               io.airlift.slice.Slice delimiter,
                                               long index)

leftTrim

public static io.airlift.slice.Slice leftTrim(io.airlift.slice.Slice slice)

charLeftTrim

public static io.airlift.slice.Slice charLeftTrim(io.airlift.slice.Slice slice)

rightTrim

public static io.airlift.slice.Slice rightTrim(io.airlift.slice.Slice slice)

charRightTrim

public static io.airlift.slice.Slice charRightTrim(io.airlift.slice.Slice slice)

trim

public static io.airlift.slice.Slice trim(io.airlift.slice.Slice slice)

charTrim

public static io.airlift.slice.Slice charTrim(io.airlift.slice.Slice slice)

leftTrim

public static io.airlift.slice.Slice leftTrim(io.airlift.slice.Slice slice,
                                              int[] codePointsToTrim)

charLeftTrim

public static io.airlift.slice.Slice charLeftTrim(io.airlift.slice.Slice slice,
                                                  int[] codePointsToTrim)

rightTrim

public static io.airlift.slice.Slice rightTrim(io.airlift.slice.Slice slice,
                                               int[] codePointsToTrim)

charRightTrim

public static io.airlift.slice.Slice charRightTrim(io.airlift.slice.Slice slice,
                                                   int[] codePointsToTrim)

trim

public static io.airlift.slice.Slice trim(io.airlift.slice.Slice slice,
                                          int[] codePointsToTrim)

charTrim

public static io.airlift.slice.Slice charTrim(io.airlift.slice.Slice slice,
                                              int[] codePointsToTrim)

castVarcharToCodePoints

public static int[] castVarcharToCodePoints(io.airlift.slice.Slice slice)

castCharToCodePoints

public static int[] castCharToCodePoints(Long charLength,
                                         io.airlift.slice.Slice slice)

lower

public static io.airlift.slice.Slice lower(io.airlift.slice.Slice slice)

charLower

public static io.airlift.slice.Slice charLower(io.airlift.slice.Slice slice)

upper

public static io.airlift.slice.Slice upper(io.airlift.slice.Slice slice)

charUpper

public static io.airlift.slice.Slice charUpper(io.airlift.slice.Slice slice)

leftPad

public static io.airlift.slice.Slice leftPad(io.airlift.slice.Slice text,
                                             long targetLength,
                                             io.airlift.slice.Slice padString)

rightPad

public static io.airlift.slice.Slice rightPad(io.airlift.slice.Slice text,
                                              long targetLength,
                                              io.airlift.slice.Slice padString)

levenshteinDistance

public static long levenshteinDistance(io.airlift.slice.Slice left,
                                       io.airlift.slice.Slice right)

hammingDistance

public static long hammingDistance(io.airlift.slice.Slice left,
                                   io.airlift.slice.Slice right)

normalize

public static io.airlift.slice.Slice normalize(io.airlift.slice.Slice slice,
                                               io.airlift.slice.Slice form)

fromUtf8

public static io.airlift.slice.Slice fromUtf8(io.airlift.slice.Slice slice)

fromUtf8

public static io.airlift.slice.Slice fromUtf8(io.airlift.slice.Slice slice,
                                              io.airlift.slice.Slice replacementCharacter)

fromUtf8

public static io.airlift.slice.Slice fromUtf8(io.airlift.slice.Slice slice,
                                              long replacementCodePoint)

toUtf8

public static io.airlift.slice.Slice toUtf8(io.airlift.slice.Slice slice)

concat

public static io.airlift.slice.Slice concat(Long x,
                                            io.airlift.slice.Slice left,
                                            io.airlift.slice.Slice right)