Package org.apache.iceberg.util

Class UnicodeUtil

  • public class UnicodeUtil
extends java.lang.Object

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static boolean isCharHighSurrogate​(char ch)
      Determines if the given character value is a unicode high-surrogate code unit.
      static java.lang.CharSequence truncateString​(java.lang.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<java.lang.CharSequence> truncateStringMax​(Literal<java.lang.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<java.lang.CharSequence> truncateStringMin​(Literal<java.lang.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 Detail

      • 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 java.lang.CharSequence truncateString​(java.lang.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<java.lang.CharSequence> truncateStringMin​(Literal<java.lang.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<java.lang.CharSequence> truncateStringMax​(Literal<java.lang.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