Package org.apache.pinot.spi.utils

Class EqualityUtils

java.lang.Object

org.apache.pinot.spi.utils.EqualityUtils

public class EqualityUtils
extends Object

Various utilities in implementing Object.equals(Object) and Object.hashCode(). For primitive float and double, isEqual() is not the same as Java == operator, isEqual(NaN, NaN) returns true instead of false.

Method Summary

Modifier and Type	Method	Description
static int	hashCodeOf(int previousHashCode, boolean value)
static int	hashCodeOf(int previousHashCode, int value)
static int	hashCodeOf(int previousHashCode, long value)
static int	hashCodeOf(int previousHashCode, Object o)
static int	hashCodeOf(Object o)	Given an object, return the hashcode of it.
static boolean	isEqual(byte left, byte right)
static boolean	isEqual(char left, char right)
static boolean	isEqual(double left, double right)	Compare both arguments for equality, and consider Double.NaN to be equal to Double.NaN (unlike the Java == operator).
static boolean	isEqual(float left, float right)	Compare both arguments for equality, and consider Float.NaN to be equal to Float.NaN (unlike the Java == operator).
static boolean	isEqual(int left, int right)
static boolean	isEqual(long left, long right)
static boolean	isEqual(short left, short right)
static boolean	isEqual(Object[] left, Object[] right)
static boolean	isEqual(Object left, Object right)
static boolean	isEqualIgnoreOrder(List left, List right)
static boolean	isEqualMap(Map left, Map right)
static boolean	isEqualSet(Set left, Set right)
static boolean	isNullOrNotSameClass(Object left, Object right)
static boolean	isSameReference(Object left, Object right)

Methods inherited from class java.lang.Object

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

Method Detail

isEqual

public static boolean isEqual(int left,
                              int right)

isEqual

public static boolean isEqual(long left,
                              long right)

isEqual

public static boolean isEqual(float left,
                              float right)

Compare both arguments for equality, and consider Float.NaN to be equal to Float.NaN (unlike the Java == operator).

isEqual

public static boolean isEqual(double left,
                              double right)

Compare both arguments for equality, and consider Double.NaN to be equal to Double.NaN (unlike the Java == operator).

isEqual

public static boolean isEqual(short left,
                              short right)

isEqual

public static boolean isEqual(char left,
                              char right)

isEqual

public static boolean isEqual(byte left,
                              byte right)

isEqual

public static boolean isEqual(@Nullable
                              Object left,
                              @Nullable
                              Object right)

isEqual

public static boolean isEqual(@Nullable
                              Object[] left,
                              @Nullable
                              Object[] right)

isEqualMap

public static boolean isEqualMap(@Nullable
                                 Map left,
                                 @Nullable
                                 Map right)

isEqualIgnoreOrder

public static boolean isEqualIgnoreOrder(@Nullable
                                         List left,
                                         @Nullable
                                         List right)

isEqualSet

public static boolean isEqualSet(@Nullable
                                 Set left,
                                 @Nullable
                                 Set right)

isNullOrNotSameClass

public static boolean isNullOrNotSameClass(@Nonnull
                                           Object left,
                                           @Nullable
                                           Object right)

isSameReference

public static boolean isSameReference(@Nullable
                                      Object left,
                                      @Nullable
                                      Object right)

hashCodeOf

public static int hashCodeOf(@Nullable
                             Object o)

Given an object, return the hashcode of it. For null, return 0 instead.

hashCodeOf

public static int hashCodeOf(int previousHashCode,
                             @Nullable
                             Object o)

hashCodeOf

public static int hashCodeOf(int previousHashCode,
                             int value)

hashCodeOf

public static int hashCodeOf(int previousHashCode,
                             long value)

hashCodeOf

public static int hashCodeOf(int previousHashCode,
                             boolean value)