org.aksw.commons.collections

Class MapUtils

java.lang.Object

org.aksw.commons.collections.MapUtils

public class MapUtils
extends Object

Created by IntelliJ IDEA. User: raven Date: 4/22/11 Time: 2:36 PM To change this template use File | Settings | File Templates.

Constructor Summary

Constructors

Constructor and Description
MapUtils()

Method Summary

Modifier and Type	Method and Description
static <T> int	addWithIntegerAutoIncrement(Map<T,Integer> map, T key)
static <T> long	addWithLongAutoIncrement(Map<T,Long> map, T key)
static <K,V> Map<K,V>	createChainMap(Map<K,?> a, Map<?,V> b)
static <K,V> V	getOrCreate(Map<K,V> map, K key, Class<V> clazz, Object... ctorArgs)
static <K,V> V	getOrElse(Map<? extends K,? extends V> map, K key, V elze)
static <K,V> boolean	isCompatible(Map<? extends K,? extends V> a, Map<? extends K,? extends V> b) Compatible means that merging the two maps would not result in the same key being mapped to distinct values.
static <K,V> boolean	isCompatible(Set<? extends K> keysToTest, Map<? extends K,? extends V> a, Map<? extends K,? extends V> b)
static <K,V> boolean	isPartiallyCompatible(Map<K,V> a, Map<K,V> b) Deprecated.
static <K,V,R extends Map<K,V>> R	mergeCompatible(Iterable<? extends Map<? extends K,? extends V>> maps, java.util.function.Supplier<R> resultSupplier) Find a mapping of variables from cand to query, such that the pattern of cand becomes a subset of that of query null if no mapping can be established
static <K,V,R extends Map<K,V>> R	mergeCompatible(Map<? extends K,? extends V> a, Map<? extends K,? extends V> b, java.util.function.Supplier<R> resultSupplier)
static <K,V> void	putForAll(Map<K,V> map, Iterable<K> keys, V value) Set the same value for a given set of keys
static void	removeAll(Map<?,?> map, Iterable<?> items)
static <K,V> com.google.common.collect.Multimap<V,K>	reverse(Map<K,V> map)

Methods inherited from class java.lang.Object

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

Constructor Detail

MapUtils

public MapUtils()

Method Detail

addWithIntegerAutoIncrement

public static <T> int addWithIntegerAutoIncrement(Map<T,Integer> map,
                                                  T key)

addWithLongAutoIncrement

public static <T> long addWithLongAutoIncrement(Map<T,Long> map,
                                                T key)

removeAll

public static void removeAll(Map<?,?> map,
                             Iterable<?> items)

putForAll

public static <K,V> void putForAll(Map<K,V> map,
                                   Iterable<K> keys,
                                   V value)

Set the same value for a given set of keys

Parameters:

map -

keys -

value -

isCompatible

public static <K,V> boolean isCompatible(Map<? extends K,? extends V> a,
                                         Map<? extends K,? extends V> b)

Compatible means that merging the two maps would not result in the same key being mapped to distinct values. Or put differently: The union of the two maps retains a functional mapping.

Type Parameters:

K -

V -

Parameters:

a -

b -

Returns:

isCompatible

public static <K,V> boolean isCompatible(Set<? extends K> keysToTest,
                                         Map<? extends K,? extends V> a,
                                         Map<? extends K,? extends V> b)

isPartiallyCompatible

@Deprecated
public static <K,V> boolean isPartiallyCompatible(Map<K,V> a,
                                                              Map<K,V> b)

Deprecated.

reverse

public static <K,V> com.google.common.collect.Multimap<V,K> reverse(Map<K,V> map)

getOrElse

public static <K,V> V getOrElse(Map<? extends K,? extends V> map,
                                K key,
                                V elze)

createChainMap

public static <K,V> Map<K,V> createChainMap(Map<K,?> a,
                                            Map<?,V> b)

getOrCreate

public static <K,V> V getOrCreate(Map<K,V> map,
                                  K key,
                                  Class<V> clazz,
                                  Object... ctorArgs)

mergeCompatible

public static <K,V,R extends Map<K,V>> R mergeCompatible(Iterable<? extends Map<? extends K,? extends V>> maps,
                                                         java.util.function.Supplier<R> resultSupplier)

Find a mapping of variables from cand to query, such that the pattern of cand becomes a subset of that of query null if no mapping can be established

Parameters:

query -

cand -

Returns:

mergeCompatible

public static <K,V,R extends Map<K,V>> R mergeCompatible(Map<? extends K,? extends V> a,
                                                         Map<? extends K,? extends V> b,
                                                         java.util.function.Supplier<R> resultSupplier)