com.atlassian.bamboo.util

Class BambooMaps

java.lang.Object

com.atlassian.bamboo.util.BambooMaps

public class BambooMaps
extends Object

Method Summary

Modifier and Type	Method and Description
static <K,V> Map<K,V>	generateMap(Set<K> keys, com.google.common.base.Function<K,V> generator) Convenience method for generating map out of set of keys, and value generator.
static <K,V> com.google.common.base.Function<K,V>	getWithDefault(Map<K,V> map, V defaultValue)
static <K,V> LinkedHashMap<K,V>	mutableLinkedUniqueIndex(Iterable<? extends V> values, com.google.common.base.Function<? super V,? extends K> indexGenerator)
static <K,V> Map<K,V>	mutableUniqueIndex(Iterable<? extends V> values, com.google.common.base.Function<? super V,? extends K> indexGenerator)
static <K,V> Map<K,V>	newHashMapFrom(Iterable<? extends V> source, com.google.common.base.Function<V,Pair<K,V>> function)
static <K,V> Map<K,V>	newLinkedHashMapWithLimitedSize(int maxSize)
static <K,V> com.google.common.cache.CacheLoader<? super K,io.atlassian.fugue.Option<V>>	nullMasquingLoader(com.google.common.cache.CacheLoader<? super K,? extends V> nullReturningLoader)
static <K,V> V	populateMap(Map<K,V> map, V input, com.google.common.base.Function<? super V,? extends K> indexGenerator) Add entry to the map using Function to generate a key
static <K,V> void	prune(Map<K,V> map, Predicate<Map.Entry<K,V>> predicate) Removes entries that match the supplied predicate
static <K,V> void	putAll(Map<K,? super V> map, Iterable<Pair<K,V>> iterable)

Methods inherited from class java.lang.Object

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

Method Detail

newHashMapFrom

public static <K,V> Map<K,V> newHashMapFrom(Iterable<? extends V> source,
                                            com.google.common.base.Function<V,Pair<K,V>> function)

newLinkedHashMapWithLimitedSize

public static <K,V> Map<K,V> newLinkedHashMapWithLimitedSize(int maxSize)

putAll

public static <K,V> void putAll(Map<K,? super V> map,
                                Iterable<Pair<K,V>> iterable)

mutableUniqueIndex

public static <K,V> Map<K,V> mutableUniqueIndex(Iterable<? extends V> values,
                                                com.google.common.base.Function<? super V,? extends K> indexGenerator)

mutableLinkedUniqueIndex

public static <K,V> LinkedHashMap<K,V> mutableLinkedUniqueIndex(Iterable<? extends V> values,
                                                                com.google.common.base.Function<? super V,? extends K> indexGenerator)

populateMap

public static <K,V> V populateMap(@NotNull
                                  Map<K,V> map,
                                  @NotNull
                                  V input,
                                  @NotNull
                                  com.google.common.base.Function<? super V,? extends K> indexGenerator)

Add entry to the map using Function to generate a key

Parameters:

map - map that will get an extra element

input - element to be added to map

indexGenerator - function that will generate key for a given element

Returns:

same behavior as Map.put(Object, Object)

nullMasquingLoader

@NotNull
public static <K,V> com.google.common.cache.CacheLoader<? super K,io.atlassian.fugue.Option<V>> nullMasquingLoader(com.google.common.cache.CacheLoader<? super K,? extends V> nullReturningLoader)

getWithDefault

public static <K,V> com.google.common.base.Function<K,V> getWithDefault(@NotNull
                                                                        Map<K,V> map,
                                                                        @Nullable
                                                                        V defaultValue)

generateMap

public static <K,V> Map<K,V> generateMap(@NotNull
                                         Set<K> keys,
                                         @NotNull
                                         com.google.common.base.Function<K,V> generator)

Convenience method for generating map out of set of keys, and value generator. Should be used for small maps. For more sophisticated uses consider using Guava's CacheBuilder.

prune

public static <K,V> void prune(@NotNull
                               Map<K,V> map,
                               @NotNull
                               Predicate<Map.Entry<K,V>> predicate)

Removes entries that match the supplied predicate