Package org.apache.iceberg.util

Class UnicodeUtil

java.lang.Object

org.apache.iceberg.util.UnicodeUtil

public class UnicodeUtil
extends Object

Method Summary

Modifier and Type	Method	Description
static boolean	isCharHighSurrogate(char ch)	Determines if the given character value is a unicode high-surrogate code unit.
static CharSequence	truncateString(CharSequence input, int length)	Truncates the input charSequence such that the truncated charSequence is a valid unicode string and the number of unicode characters in the truncated charSequence is lesser than or equal to length
static Literal<CharSequence>	truncateStringMax(Literal<CharSequence> input, int length)	Returns a valid unicode charsequence that is greater than the given input such that the number of unicode characters in the truncated charSequence is lesser than or equal to length
static Literal<CharSequence>	truncateStringMin(Literal<CharSequence> input, int length)	Returns a valid unicode charsequence that is lower than the given input such that the number of unicode characters in the truncated charSequence is lesser than or equal to length

Methods inherited from class java.lang.Object

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

Method Details

isCharHighSurrogate

public static boolean isCharHighSurrogate(char ch)

Determines if the given character value is a unicode high-surrogate code unit. The range of high-surrogates is 0xD800 - 0xDBFF.

truncateString

public static CharSequence truncateString(CharSequence input,
 int length)

Truncates the input charSequence such that the truncated charSequence is a valid unicode string and the number of unicode characters in the truncated charSequence is lesser than or equal to length

truncateStringMin

public static Literal<CharSequence> truncateStringMin(Literal<CharSequence> input,
 int length)

Returns a valid unicode charsequence that is lower than the given input such that the number of unicode characters in the truncated charSequence is lesser than or equal to length

truncateStringMax

public static Literal<CharSequence> truncateStringMax(Literal<CharSequence> input,
 int length)

Returns a valid unicode charsequence that is greater than the given input such that the number of unicode characters in the truncated charSequence is lesser than or equal to length