Package ru.cg.webbpm.studio.subsystems.page_designer.serialization.impl.adapter

Class AdapterUtils

java.lang.Object

ru.cg.webbpm.studio.subsystems.page_designer.serialization.impl.adapter.AdapterUtils

public class AdapterUtils
extends Object

Author:

krylov

Constructor Summary

Constructors

Constructor	Description
AdapterUtils()

Method Summary

Modifier and Type	Method	Description
static <B, T> T	ifDiffer(Function<B,T> getter, B object, B proto)	Returns null if prototype isn't null and the value equals prototype value, otherwise returns value
static boolean	isEmpty(PropertyValue value)
static boolean	isEmpty(XmlArrayItem arrayItem)
static boolean	isEmpty(XmlPropertyValue value)
static <V> Collection<V>	nullIfEmpty(Collection<V> collection)	Checks if collection is empty, returns null if it is
static <K, V> Map<K,V>	nullIfEmpty(Map<K,V> map)	Checks if map is empty, returns null if it is
static <T> T	oneOf(T... values)	Returns first non-null of passed values
static <T> T	oneOf(T o1, T o2)	Optimized version of oneOf(Object[]) for two arguments
static <T> T	oneOf(T o1, T o2, T o3)	Optimized version of oneOf(Object[]) for three arguments
static <O, T> T	safeCall(O object, Function<O,T> getter)	returns getter value if value provided is not null, or null otherwise (imitates Kotlin ?.
static <T, K, U> Collector<T,?,Map<K,U>>	toSortedMap(Function<? super T,? extends K> keyMapper, Function<? super T,? extends U> valueMapper)

Methods inherited from class java.lang.Object

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

Constructor Details

AdapterUtils

public AdapterUtils()

Method Details

oneOf

public static <T> T oneOf(T o1,
 T o2)

Optimized version of oneOf(Object[]) for two arguments

oneOf

public static <T> T oneOf(T o1,
 T o2,
 T o3)

Optimized version of oneOf(Object[]) for three arguments

oneOf

@SafeVarargs
public static <T> T oneOf(T... values)

Returns first non-null of passed values

Parameters:

values - list of values to check

Returns:

first non-null value, or null if all values are null

toSortedMap

public static <T,
K,
U> Collector<T,?,Map<K,U>> toSortedMap(Function<? super T,? extends K> keyMapper,
 Function<? super T,? extends U> valueMapper)

ifDiffer

public static <B,
T> T ifDiffer(Function<B,T> getter,
 B object,
 B proto)

Returns null if prototype isn't null and the value equals prototype value, otherwise returns value

Type Parameters:

B - bean type

T - value type

Parameters:

getter - getter for value

object - a bean

proto - nullable bean's prototype

Returns:

either object value or null

nullIfEmpty

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

Checks if map is empty, returns null if it is

Parameters:

map - map to check

Returns:

map provided, or null if it's empty

nullIfEmpty

public static <V> Collection<V> nullIfEmpty(Collection<V> collection)

Checks if collection is empty, returns null if it is

Parameters:

collection - collection to check

Returns:

collection provided, or null if it's empty

isEmpty

public static boolean isEmpty(XmlPropertyValue value)

isEmpty

public static boolean isEmpty(XmlArrayItem arrayItem)

isEmpty

public static boolean isEmpty(PropertyValue value)

safeCall

public static <O,
T> T safeCall(O object,
 Function<O,T> getter)

returns getter value if value provided is not null, or null otherwise (imitates Kotlin ?. operator)

Parameters:

object - nullable object

getter - value getter

Returns:

getter value, or null if object is null