Class TruncateUtil

  • public class TruncateUtil
    extends java.lang.Object
    Contains the logic for various truncate transformations for various types.

    This utility class allows for the logic to be reused in different scenarios where input validation is done at different times either in org.apache.iceberg.transforms.Truncate and within defined SQL functions for different compute engines for usage in SQL.

    In general, the inputs to the functions should have already been validated by the calling code, as different classes use truncate with different preprocessing. This generally means that the truncation width is positive and the value to truncate is non-null.

    Thus, none of these utility functions validate their input. It is the responsibility of the calling code to validate input.

    See also UnicodeUtil.truncateString(CharSequence, int) and BinaryUtil.truncateBinaryUnsafe(ByteBuffer, int) for similar methods for Strings and ByteBuffers.

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static byte truncateByte​(int width, byte value)  
      static java.math.BigDecimal truncateDecimal​(java.math.BigInteger unscaledWidth, java.math.BigDecimal value)  
      static int truncateInt​(int width, int value)  
      static long truncateLong​(int width, long value)  
      static short truncateShort​(int width, short value)  
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Method Detail

      • truncateByte

        public static byte truncateByte​(int width,
                                        byte value)
      • truncateShort

        public static short truncateShort​(int width,
                                          short value)
      • truncateInt

        public static int truncateInt​(int width,
                                      int value)
      • truncateLong

        public static long truncateLong​(int width,
                                        long value)
      • truncateDecimal

        public static java.math.BigDecimal truncateDecimal​(java.math.BigInteger unscaledWidth,
                                                           java.math.BigDecimal value)