Package io.rocketbase.commons.util

Class Nulls

java.lang.Object

io.rocketbase.commons.util.Nulls

public final class Nulls
extends Object

shorten null checks

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	Nulls.PropertyValueProvider<SOURCE,TARGET>

Constructor Summary

Constructors

Constructor	Description
Nulls()

Method Summary

Modifier and Type	Method	Description
static <T> void	accept(T value, Consumer<T> consumer)	accept when value is not null
static <T> boolean	anyNoneNullValue(T... values)	return's true if at least one of the values it not null
static <T,R> R	apply(T value, Function<T,R> function, R fallback)	apply when value is not null
static <T> boolean	noneNullValue(T... values)	return's true if all values are not null false in case one is null
static String	notEmpty(String value, String fallback)	returns fallback when value is empty
static <SOURCE> String	notEmpty(SOURCE value, Nulls.PropertyValueProvider<SOURCE,String> provider, String fallback)
static Boolean	notNull(Boolean value)	return false when value is null
static Long	notNull(Long value)	return 0 when value is null
static String	notNull(String value)	returns empty string when value is null
static BigDecimal	notNull(BigDecimal value)	return BigDecimal.ZERO when value is null
static <T> List<T>	notNull(List<T> value)	in case of null value return's new ArrayList
static <K,V> Map<K,V>	notNull(Map<K,V> value)	in case of null value return's new HashMap
static <T> Set<T>	notNull(Set<T> value)	in case of null value return's new HashSet
static <SOURCE> String	notNull(SOURCE value, Nulls.PropertyValueProvider<SOURCE,String> provider)
static <TARGET,SOURCE> TARGET	notNull(SOURCE value, Nulls.PropertyValueProvider<SOURCE,TARGET> provider, TARGET fallback)
static <T> T	notNull(T value, T fallback)	when value is null returns fallback

Methods inherited from class java.lang.Object

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

Constructor Detail

Nulls

public Nulls()

Method Detail

notNull

public static <T> T notNull(T value,
                            T fallback)

when value is null returns fallback

notNull

public static String notNull(String value)

returns empty string when value is null

notNull

public static Boolean notNull(Boolean value)

return false when value is null

notNull

public static Long notNull(Long value)

return 0 when value is null

notNull

public static BigDecimal notNull(BigDecimal value)

return BigDecimal.ZERO when value is null

notNull

public static <T> List<T> notNull(List<T> value)

in case of null value return's new ArrayList

notNull

public static <T> Set<T> notNull(Set<T> value)

in case of null value return's new HashSet

notNull

public static <K,V> Map<K,V> notNull(Map<K,V> value)

in case of null value return's new HashMap

accept

public static <T> void accept(T value,
                              Consumer<T> consumer)

accept when value is not null

apply

public static <T,R> R apply(T value,
                                  Function<T,R> function,
                                  R fallback)

apply when value is not null

notEmpty

public static String notEmpty(String value,
                              String fallback)

returns fallback when value is empty

notNull

public static <TARGET,SOURCE> TARGET notNull(SOURCE value,
                                                   Nulls.PropertyValueProvider<SOURCE,TARGET> provider,
                                                   TARGET fallback)

notNull

public static <SOURCE> String notNull(SOURCE value,
                                      Nulls.PropertyValueProvider<SOURCE,String> provider)

notEmpty

public static <SOURCE> String notEmpty(SOURCE value,
                                       Nulls.PropertyValueProvider<SOURCE,String> provider,
                                       String fallback)

noneNullValue

public static <T> boolean noneNullValue(T... values)

return's true if all values are not null
false in case one is null

anyNoneNullValue

public static <T> boolean anyNoneNullValue(T... values)

return's true if at least one of the values it not null