Package org.apache.flink.cdc.runtime.functions.impl

Class StringFunctions

java.lang.Object

org.apache.flink.cdc.runtime.functions.impl.StringFunctions

public class StringFunctions
extends Object

String built-in functions.

Constructor Summary

Constructors

Constructor	Description
StringFunctions()

Method Summary

Modifier and Type	Method	Description
static String	btrim(String str)
static String	btrim(String str, String trimStr)
static int	charLength(String str)
static String	concat(String... str)
static String	concatWs(String separator, String... str)
static Boolean	endswith(byte[] bytes, byte[] suffix)
static Boolean	endswith(String str, String suffix)
static String	fromBase64(String str)
static byte[]	fromBase64Binary(String str)
static Integer	instr(String str, String subString)
static String	left(String str, Number length)
static boolean	like(String str, String regex)
static Boolean	like(String str, String pattern, String escape)
static Integer	locate(String seek, String str)
static Integer	locate(String seek, String str, Number from)
static String	lower(String str)
static String	lpad(String base, Number len, String pad)
static String	ltrim(String str)
static String	ltrim(String str, String trimStr)
static boolean	notLike(String str, String regex)
static Boolean	notLike(String str, String pattern, String escape)
static Boolean	notSimilarTo(String str, String pattern)
static Boolean	notSimilarTo(String str, String pattern, String escape)
static byte[]	overlay(byte[] bytes, byte[] replacement, Number start)
static byte[]	overlay(byte[] bytes, byte[] replacement, Number start, Number length)
static String	overlay(String str, String replacement, Number start)
static String	overlay(String str, String replacement, Number start, Number length)
static Variant	parseJson(String jsonStr)
static Variant	parseJson(String jsonStr, boolean allowDuplicateKeys)
static Integer	position(byte[] seek, byte[] bytes)
static Integer	position(byte[] seek, byte[] bytes, Number from)
static Integer	position(String seek, String str)
static Integer	position(String seek, String str, Number from)
static Integer	regexpCount(String str, String regex)	Returns the number of non-overlapping matches of a regular expression.
static String	regexpExtract(String str, String regex)	Returns a string extracted with a specified regular expression and capture group index.
static String	regexpExtract(String str, String regex, Number extractIndex)
static List<String>	regexpExtractAll(String str, String regex)	Returns all strings extracted with a specified regular expression.
static List<String>	regexpExtractAll(String str, String regex, Number extractIndex)
static Integer	regexpInstr(String str, String regex)	Returns the 1-based position of the first regular expression match.
static String	regexpReplace(String str, String regex, String replacement)	Returns a string resulting from replacing all substrings that match the regular expression with replacement.
static String	regexpSubstr(String str, String regex)	Returns the first substring that matches a regular expression.
static String	repeat(String str, Number repeat)
static String	replace(String str, String oldStr, String replacement)
static String	right(String str, Number length)
static String	rpad(String base, Number len, String pad)
static String	rtrim(String str)
static String	rtrim(String str, String trimStr)
static Boolean	similarTo(String str, String pattern)
static Boolean	similarTo(String str, String pattern, String escape)
static Boolean	startswith(byte[] bytes, byte[] prefix)
static Boolean	startswith(String str, String prefix)
static String	substr(String str, int beginIndex)
static String	substr(String str, int beginIndex, int length)
static String	substring(String str, int beginIndex)
static String	substring(String str, int beginIndex, int length)
static String	toBase64(byte[] bytes)
static String	toBase64(String str)
static String	trim(String symbol, String target, String str)
static Variant	tryParseJson(String jsonStr)
static Variant	tryParseJson(String jsonStr, boolean allowDuplicateKeys)
static String	upper(String str)
static String	uuid()
static String	uuid(byte[] b)

Methods inherited from class java.lang.Object

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

Constructor Detail

StringFunctions

public StringFunctions()

Method Detail

charLength

public static int charLength(String str)

trim

public static String trim(String symbol,
                          String target,
                          String str)

regexpReplace

public static String regexpReplace(String str,
                                   String regex,
                                   String replacement)

Returns a string resulting from replacing all substrings that match the regular expression with replacement.

regexpExtract

public static String regexpExtract(String str,
                                   String regex)

Returns a string extracted with a specified regular expression and capture group index.

regexpExtract

public static String regexpExtract(String str,
                                   String regex,
                                   Number extractIndex)

regexpExtractAll

public static List<String> regexpExtractAll(String str,
                                            String regex)

Returns all strings extracted with a specified regular expression.

regexpExtractAll

public static List<String> regexpExtractAll(String str,
                                            String regex,
                                            Number extractIndex)

regexpCount

public static Integer regexpCount(String str,
                                  String regex)

Returns the number of non-overlapping matches of a regular expression.

regexpInstr

public static Integer regexpInstr(String str,
                                  String regex)

Returns the 1-based position of the first regular expression match.

regexpSubstr

public static String regexpSubstr(String str,
                                  String regex)

Returns the first substring that matches a regular expression.

concat

public static String concat(String... str)

concatWs

public static String concatWs(String separator,
                              String... str)

like

public static boolean like(String str,
                           String regex)

like

public static Boolean like(String str,
                           String pattern,
                           String escape)

notLike

public static boolean notLike(String str,
                              String regex)

notLike

public static Boolean notLike(String str,
                              String pattern,
                              String escape)

similarTo

public static Boolean similarTo(String str,
                                String pattern)

similarTo

public static Boolean similarTo(String str,
                                String pattern,
                                String escape)

notSimilarTo

public static Boolean notSimilarTo(String str,
                                   String pattern)

notSimilarTo

public static Boolean notSimilarTo(String str,
                                   String pattern,
                                   String escape)

substr

public static String substr(String str,
                            int beginIndex)

substr

public static String substr(String str,
                            int beginIndex,
                            int length)

substring

public static String substring(String str,
                               int beginIndex)

substring

public static String substring(String str,
                               int beginIndex,
                               int length)

upper

public static String upper(String str)

lower

public static String lower(String str)

overlay

public static String overlay(String str,
                             String replacement,
                             Number start)

overlay

public static String overlay(String str,
                             String replacement,
                             Number start,
                             Number length)

overlay

public static byte[] overlay(byte[] bytes,
                             byte[] replacement,
                             Number start)

overlay

public static byte[] overlay(byte[] bytes,
                             byte[] replacement,
                             Number start,
                             Number length)

position

public static Integer position(String seek,
                               String str)

position

public static Integer position(String seek,
                               String str,
                               Number from)

position

public static Integer position(byte[] seek,
                               byte[] bytes)

position

public static Integer position(byte[] seek,
                               byte[] bytes,
                               Number from)

instr

public static Integer instr(String str,
                            String subString)

locate

public static Integer locate(String seek,
                             String str)

locate

public static Integer locate(String seek,
                             String str,
                             Number from)

ltrim

public static String ltrim(String str)

ltrim

public static String ltrim(String str,
                           String trimStr)

rtrim

public static String rtrim(String str)

rtrim

public static String rtrim(String str,
                           String trimStr)

btrim

public static String btrim(String str)

btrim

public static String btrim(String str,
                           String trimStr)

lpad

public static String lpad(String base,
                          Number len,
                          String pad)

rpad

public static String rpad(String base,
                          Number len,
                          String pad)

replace

public static String replace(String str,
                             String oldStr,
                             String replacement)

repeat

public static String repeat(String str,
                            Number repeat)

left

public static String left(String str,
                          Number length)

right

public static String right(String str,
                           Number length)

startswith

public static Boolean startswith(String str,
                                 String prefix)

startswith

public static Boolean startswith(byte[] bytes,
                                 byte[] prefix)

endswith

public static Boolean endswith(String str,
                               String suffix)

endswith

public static Boolean endswith(byte[] bytes,
                               byte[] suffix)

toBase64

public static String toBase64(String str)

toBase64

public static String toBase64(byte[] bytes)

fromBase64

public static String fromBase64(String str)

fromBase64Binary

public static byte[] fromBase64Binary(String str)

uuid

public static String uuid()

uuid

public static String uuid(byte[] b)

tryParseJson

public static Variant tryParseJson(String jsonStr)

tryParseJson

public static Variant tryParseJson(String jsonStr,
                                   boolean allowDuplicateKeys)

parseJson

public static Variant parseJson(String jsonStr)

parseJson

public static Variant parseJson(String jsonStr,
                                boolean allowDuplicateKeys)