Class ArrayUtil
- java.lang.Object
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- org.apache.iceberg.util.ArrayUtil
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public class ArrayUtil extends java.lang.Object
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Field Summary
Fields Modifier and Type Field Description static boolean[]
EMPTY_BOOLEAN_ARRAY
static byte[]
EMPTY_BYTE_ARRAY
static double[]
EMPTY_DOUBLE_ARRAY
static float[]
EMPTY_FLOAT_ARRAY
static int[]
EMPTY_INT_ARRAY
static long[]
EMPTY_LONG_ARRAY
static short[]
EMPTY_SHORT_ARRAY
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static <T> T[]
add(T[] array, T element)
Copies the given array and adds the given element at the end of the new array.static int[]
toIntArray(java.util.List<java.lang.Integer> ints)
static java.util.List<java.lang.Integer>
toIntList(int[] ints)
static long[]
toLongArray(java.util.List<java.lang.Long> longs)
static java.util.List<java.lang.Long>
toLongList(long[] longs)
static boolean[]
toPrimitive(java.lang.Boolean[] array)
Converts an array of object Booleans to primitives.static byte[]
toPrimitive(java.lang.Byte[] array)
Converts an array of object Bytes to primitives.static double[]
toPrimitive(java.lang.Double[] array)
Converts an array of object Doubles to primitives.static float[]
toPrimitive(java.lang.Float[] array)
Converts an array of object Floats to primitives.static int[]
toPrimitive(java.lang.Integer[] array)
Converts an array of object Integers to primitives.static long[]
toPrimitive(java.lang.Long[] array)
Converts an array of object Longs to primitives.static short[]
toPrimitive(java.lang.Short[] array)
Converts an array of object Shorts to primitives.
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Field Detail
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EMPTY_BOOLEAN_ARRAY
public static final boolean[] EMPTY_BOOLEAN_ARRAY
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EMPTY_BYTE_ARRAY
public static final byte[] EMPTY_BYTE_ARRAY
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EMPTY_SHORT_ARRAY
public static final short[] EMPTY_SHORT_ARRAY
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EMPTY_INT_ARRAY
public static final int[] EMPTY_INT_ARRAY
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EMPTY_LONG_ARRAY
public static final long[] EMPTY_LONG_ARRAY
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EMPTY_FLOAT_ARRAY
public static final float[] EMPTY_FLOAT_ARRAY
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EMPTY_DOUBLE_ARRAY
public static final double[] EMPTY_DOUBLE_ARRAY
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Method Detail
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toIntList
public static java.util.List<java.lang.Integer> toIntList(int[] ints)
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toIntArray
public static int[] toIntArray(java.util.List<java.lang.Integer> ints)
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toLongList
public static java.util.List<java.lang.Long> toLongList(long[] longs)
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toLongArray
public static long[] toLongArray(java.util.List<java.lang.Long> longs)
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toPrimitive
public static boolean[] toPrimitive(java.lang.Boolean[] array)
Converts an array of object Booleans to primitives.This method returns
null
for anull
input array.This code is borrowed from `org.apache.commons:commons-lang3`.
- Parameters:
array
- aBoolean
array, may benull
- Returns:
- a
boolean
array,null
if null array input - Throws:
java.lang.NullPointerException
- if array content isnull
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toPrimitive
public static byte[] toPrimitive(java.lang.Byte[] array)
Converts an array of object Bytes to primitives.This method returns
null
for anull
input array.This code is borrowed from `org.apache.commons:commons-lang3`.
- Parameters:
array
- aByte
array, may benull
- Returns:
- a
byte
array,null
if null array input - Throws:
java.lang.NullPointerException
- if array content isnull
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toPrimitive
public static short[] toPrimitive(java.lang.Short[] array)
Converts an array of object Shorts to primitives.This method returns
null
for anull
input array.This code is borrowed from `org.apache.commons:commons-lang3`.
- Parameters:
array
- aShort
array, may benull
- Returns:
- a
byte
array,null
if null array input - Throws:
java.lang.NullPointerException
- if array content isnull
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toPrimitive
public static int[] toPrimitive(java.lang.Integer[] array)
Converts an array of object Integers to primitives.This method returns
null
for anull
input array.This code is borrowed from `org.apache.commons:commons-lang3`.
- Parameters:
array
- aInteger
array, may benull
- Returns:
- an
int
array,null
if null array input - Throws:
java.lang.NullPointerException
- if array content isnull
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toPrimitive
public static long[] toPrimitive(java.lang.Long[] array)
Converts an array of object Longs to primitives.This method returns
null
for anull
input array.This code is borrowed from `org.apache.commons:commons-lang3`.
- Parameters:
array
- aLong
array, may benull
- Returns:
- a
long
array,null
if null array input - Throws:
java.lang.NullPointerException
- if array content isnull
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toPrimitive
public static float[] toPrimitive(java.lang.Float[] array)
Converts an array of object Floats to primitives.This method returns
null
for anull
input array.This code is borrowed from `org.apache.commons:commons-lang3`.
- Parameters:
array
- aFloat
array, may benull
- Returns:
- a
float
array,null
if null array input - Throws:
java.lang.NullPointerException
- if array content isnull
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toPrimitive
public static double[] toPrimitive(java.lang.Double[] array)
Converts an array of object Doubles to primitives.This method returns
null
for anull
input array.This code is borrowed from `org.apache.commons:commons-lang3`.
- Parameters:
array
- aDouble
array, may benull
- Returns:
- a
double
array,null
if null array input - Throws:
java.lang.NullPointerException
- if array content isnull
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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 benull
element
- the object to add, may benull
- 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:
java.lang.IllegalArgumentException
- if both arguments are null- Since:
- 2.1
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