Package org.apache.iceberg.util

Class ArrayUtil

java.lang.Object
org.apache.iceberg.util.ArrayUtil
public class ArrayUtil extends Object

  • Field Details

    • EMPTY_BOOLEAN_ARRAY

      public static final boolean[] EMPTY_BOOLEAN_ARRAY

    • EMPTY_BYTE_ARRAY

      public static final byte[] EMPTY_BYTE_ARRAY

    • EMPTY_SHORT_ARRAY

      public static final short[] EMPTY_SHORT_ARRAY

    • EMPTY_INT_ARRAY

      public static final int[] EMPTY_INT_ARRAY

    • EMPTY_LONG_ARRAY

      public static final long[] EMPTY_LONG_ARRAY

    • EMPTY_FLOAT_ARRAY

      public static final float[] EMPTY_FLOAT_ARRAY

    • EMPTY_DOUBLE_ARRAY

      public static final double[] EMPTY_DOUBLE_ARRAY

  • Method Details

    • toIntList

      public static List<Integer> toIntList(int[] ints)

    • toIntArray

      public static int[] toIntArray(List<Integer> ints)

    • toLongList

      public static List<Long> toLongList(long[] longs)

    • toUnmodifiableLongList

      public static List<Long> toUnmodifiableLongList(long[] longs)

    • toLongArray

      public static long[] toLongArray(List<Long> longs)

    • toPrimitive

      public static boolean[] toPrimitive(Boolean[] array)
      Converts an array of object Booleans to primitives.

      This method returns null for a null input array.

      This code is borrowed from `org.apache.commons:commons-lang3`.

      Parameters:
      array - a Boolean array, may be null
      Returns:
      a boolean array, null if null array input
      Throws:
      NullPointerException - if array content is null

    • toPrimitive

      public static byte[] toPrimitive(Byte[] array)
      Converts an array of object Bytes to primitives.

      This method returns null for a null input array.

      This code is borrowed from `org.apache.commons:commons-lang3`.

      Parameters:
      array - a Byte array, may be null
      Returns:
      a byte array, null if null array input
      Throws:
      NullPointerException - if array content is null

    • toPrimitive

      public static short[] toPrimitive(Short[] array)
      Converts an array of object Shorts to primitives.

      This method returns null for a null input array.

      This code is borrowed from `org.apache.commons:commons-lang3`.

      Parameters:
      array - a Short array, may be null
      Returns:
      a byte array, null if null array input
      Throws:
      NullPointerException - if array content is null

    • toPrimitive

      public static int[] toPrimitive(Integer[] array)
      Converts an array of object Integers to primitives.

      This method returns null for a null input array.

      This code is borrowed from `org.apache.commons:commons-lang3`.

      Parameters:
      array - a Integer array, may be null
      Returns:
      an int array, null if null array input
      Throws:
      NullPointerException - if array content is null

    • toPrimitive

      public static long[] toPrimitive(Long[] array)
      Converts an array of object Longs to primitives.

      This method returns null for a null input array.

      This code is borrowed from `org.apache.commons:commons-lang3`.

      Parameters:
      array - a Long array, may be null
      Returns:
      a long array, null if null array input
      Throws:
      NullPointerException - if array content is null

    • toPrimitive

      public static float[] toPrimitive(Float[] array)
      Converts an array of object Floats to primitives.

      This method returns null for a null input array.

      This code is borrowed from `org.apache.commons:commons-lang3`.

      Parameters:
      array - a Float array, may be null
      Returns:
      a float array, null if null array input
      Throws:
      NullPointerException - if array content is null

    • toPrimitive

      public static double[] toPrimitive(Double[] array)
      Converts an array of object Doubles to primitives.

      This method returns null for a null input array.

      This code is borrowed from `org.apache.commons:commons-lang3`.

      Parameters:
      array - a Double array, may be null
      Returns:
      a double array, null if null array input
      Throws:
      NullPointerException - if array content is null

    • add

      public static <T> T[] add(T[] array, T element)
      Copies the given array and adds the given element at the end of the new array.

      The new array contains the same elements of the input array plus the given element in the last position. The component type of the new array is the same as that of the input array.

      If the input array is null, a new one element array is returned whose component type is the same as the element, unless the element itself is null, in which case the return type is Object[] 

       ArrayUtils.add(null, null)      = IllegalArgumentException
 ArrayUtils.add(null, "a")       = ["a"]
 ArrayUtils.add(["a"], null)     = ["a", null]
 ArrayUtils.add(["a"], "b")      = ["a", "b"]
 ArrayUtils.add(["a", "b"], "c") = ["a", "b", "c"]
      This code is borrowed from `org.apache.commons:commons-lang3`.
      Type Parameters:
      T - the component type of the array
      Parameters:
      array - the array to "add" the element to, may be null
      element - the object to add, may be null
      Returns:
      A new array containing the existing elements plus the new element The returned array type will be that of the input array (unless null), in which case it will have the same type as the element. If both are null, an IllegalArgumentException is thrown
      Throws:
      IllegalArgumentException - if both arguments are null
      Since:
      2.1

    • isStrictlyAscending

      public static boolean isStrictlyAscending(long[] array)

    • concat

      public static <T> T[] concat(Class<T> type, T[]... arrays)