Package com.sportradar.livedata.sdk.common.classes

Class Nulls

java.lang.Object

com.sportradar.livedata.sdk.common.classes.Nulls

public final class Nulls
extends Object

Basically this is versions of 2 methods: etn (empty to null) and nte (null to empty). If you are calling Nulls.nte(), compiler will find needed version itself by collection you had passed. For example: Nulls.nte(new List()) will call public static <T> List<T> nte(final List<T> list).

As a result, code: if(list != null){ for(obj : list){} } will turn into: for(obj : Nulls.nte(list)){}

Field Summary

Fields

Modifier and Type	Field	Description
static byte[]	EMPTY_BYTES
static int[]	EMPTY_INTS
static long[]	EMPTY_LONGS
static Object[]	EMPTY_OBJECTS
static String[]	EMPTY_STRINGS

Method Summary

Modifier and Type	Method	Description
static <T> T	checkNotNull(T reference)
static <T> T	checkNotNull(T reference, Object errorMessage)
static <T> T	checkNotNull(T reference, String errorMessageTemplate, Object... errorMessageArgs)
static String	emptyToNull(String str)
static <T> List<T>	emptyToNull(List<T> list)
static <K,V> Map<K,V>	emptyToNull(Map<K,V> map)
static <T> Set<T>	emptyToNull(Set<T> set)
static String	etn(String str)
static <T> List<T>	etn(List<T> list)
static <K,V> Map<K,V>	etn(Map<K,V> map)
static <T> Set<T>	etn(Set<T> set)
static <T> T	firstNonNull(T first, T second)
static <T> T	firstNonNullIfExists(T... values)
static <T> boolean	hasNotNulls(T... objs)
static <T> boolean	hasNulls(T... objs)
static byte[]	nte(byte[] bytes)
static int[]	nte(int[] ints)
static long[]	nte(long[] longs)
static Object[]	nte(Object[] objects)
static String	nte(String str)	Convert null string to empty string.
static String[]	nte(String[] strings)
static <T> Collection<T>	nte(Collection<T> collection)
static <T> List<T>	nte(List<T> list)
static <K,V> Map<K,V>	nte(Map<K,V> map)
static <T> Set<T>	nte(Set<T> set)
static byte[]	nullToEmpty(byte[] bytes)
static int[]	nullToEmpty(int[] ints)
static long[]	nullToEmpty(long[] longs)
static Object[]	nullToEmpty(Object[] objects)
static String	nullToEmpty(String str)
static String[]	nullToEmpty(String[] strings)
static <T> Collection<T>	nullToEmpty(Collection<T> collection)
static <T> List<T>	nullToEmpty(List<T> list)
static <K,V> Map<K,V>	nullToEmpty(Map<K,V> map)
static <T> Set<T>	nullToEmpty(Set<T> set)
static <T extends Number> T	nullToZero(T value)

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY_STRINGS

public static final String[] EMPTY_STRINGS

EMPTY_OBJECTS

public static final Object[] EMPTY_OBJECTS

EMPTY_BYTES

public static final byte[] EMPTY_BYTES

EMPTY_INTS

public static final int[] EMPTY_INTS

EMPTY_LONGS

public static final long[] EMPTY_LONGS

Method Detail

nullToZero

public static <T extends Number> T nullToZero(T value)

nte

public static String nte(String str)

Convert null string to empty string. Non-null string returned as is.

Parameters:

str - test value

Returns:

empty or given value.

nullToEmpty

public static String nullToEmpty(String str)

nte

public static String[] nte(String[] strings)

nullToEmpty

public static String[] nullToEmpty(String[] strings)

nte

public static Object[] nte(Object[] objects)

nullToEmpty

public static Object[] nullToEmpty(Object[] objects)

nte

public static byte[] nte(byte[] bytes)

nullToEmpty

public static byte[] nullToEmpty(byte[] bytes)

nte

public static int[] nte(int[] ints)

nullToEmpty

public static int[] nullToEmpty(int[] ints)

nte

public static long[] nte(long[] longs)

nullToEmpty

public static long[] nullToEmpty(long[] longs)

nte

public static <T> Collection<T> nte(Collection<T> collection)

nullToEmpty

public static <T> Collection<T> nullToEmpty(Collection<T> collection)

nte

public static <T> List<T> nte(List<T> list)

nullToEmpty

public static <T> List<T> nullToEmpty(List<T> list)

nte

public static <T> Set<T> nte(Set<T> set)

nullToEmpty

public static <T> Set<T> nullToEmpty(Set<T> set)

nte

public static <K,V> Map<K,V> nte(Map<K,V> map)

nullToEmpty

public static <K,V> Map<K,V> nullToEmpty(Map<K,V> map)

etn

public static String etn(String str)

emptyToNull

public static String emptyToNull(String str)

etn

public static <T> List<T> etn(List<T> list)

emptyToNull

public static <T> List<T> emptyToNull(List<T> list)

etn

public static <T> Set<T> etn(Set<T> set)

emptyToNull

public static <T> Set<T> emptyToNull(Set<T> set)

etn

public static <K,V> Map<K,V> etn(Map<K,V> map)

emptyToNull

public static <K,V> Map<K,V> emptyToNull(Map<K,V> map)

hasNulls

public static <T> boolean hasNulls(T... objs)

hasNotNulls

public static <T> boolean hasNotNulls(T... objs)

firstNonNullIfExists

public static <T> T firstNonNullIfExists(T... values)

firstNonNull

public static <T> T firstNonNull(T first,
                                 T second)

checkNotNull

public static <T> T checkNotNull(T reference)

checkNotNull

public static <T> T checkNotNull(T reference,
                                 @Nullable
                                 Object errorMessage)

checkNotNull

public static <T> T checkNotNull(T reference,
                                 @Nullable
                                 String errorMessageTemplate,
                                 @Nullable
                                 Object... errorMessageArgs)