org.apache.brooklyn.util.collections

Class CollectionFunctionals

java.lang.Object

org.apache.brooklyn.util.collections.CollectionFunctionals

public class CollectionFunctionals
extends java.lang.Object

things which it seems should be in guava, but i can't find

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	CollectionFunctionals.FirstElementFunction<T>
static class	CollectionFunctionals.SizeFunction

Constructor Summary

Constructors

Constructor and Description
CollectionFunctionals()

Method Summary

Modifier and Type	Method and Description
static <T,TT extends java.lang.Iterable<T>> <any>	all(<any> attributeSatisfies) Returns a predicate for a collection which is true if all elements in the collection given to the predicate which satisfies the predicate given here.
static <T,TT extends java.lang.Iterable<T>> <any>	any(<any> attributeSatisfies) Returns a predicate for a collection which is true if there is at least one element in the collection given to the predicate which satisfies the predicate given here.
static <I,T extends java.util.Collection<I>> <any>	contains(I item)
static <any>	empty()
static <any>	emptyOrNull()
static <any>	equalsSet(java.lang.Iterable<?> target)
static <any>	equalsSetOf(java.lang.Object... target) default guava Equals predicate will reflect order of target, and will fail when matching against a list; this treats them both as sets
static <T> <any>	firstElement()
static <K> <any>	keys()
static <T,I extends java.lang.Iterable<T>> <any>	limit(int max)
static <K> <any>	mapEmptyOrNull()
static <K> <any>	mapNotEmpty()
static <K> <any>	mapSize()
static <K> <any>	mapSize(java.lang.Integer valueIfNull)
static <K> <any>	mapSizeEquals(int targetSize)
static <any>	notEmpty()
static <T,TT extends java.lang.Iterable<T>> <any>	quorum(QuorumCheck quorumCheck, <any> attributeSatisfies) Returns a predicate for a collection which is true if the number of elements in the collection satisfying the predicate given here passes the QuorumCheck given here.
static <any>	sizeEquals(int targetSize)
static <any>	sizeFunction()
static <any>	sizeFunction(java.lang.Integer valueIfInputNull)
static <any>	sizeSupplier(java.lang.Iterable<?> collection)

Methods inherited from class java.lang.Object

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

Constructor Detail

CollectionFunctionals

public CollectionFunctionals()

Method Detail

sizeSupplier

public static <any> sizeSupplier(java.lang.Iterable<?> collection)

sizeFunction

public static <any> sizeFunction()

sizeFunction

public static <any> sizeFunction(java.lang.Integer valueIfInputNull)

firstElement

public static <T> <any> firstElement()

keys

public static <K> <any> keys()

mapSize

public static <K> <any> mapSize()

mapSize

public static <K> <any> mapSize(java.lang.Integer valueIfNull)

equalsSetOf

public static <any> equalsSetOf(java.lang.Object... target)

default guava Equals predicate will reflect order of target, and will fail when matching against a list; this treats them both as sets

equalsSet

public static <any> equalsSet(java.lang.Iterable<?> target)

sizeEquals

public static <any> sizeEquals(int targetSize)

empty

public static <any> empty()

emptyOrNull

public static <any> emptyOrNull()

notEmpty

public static <any> notEmpty()

mapSizeEquals

public static <K> <any> mapSizeEquals(int targetSize)

mapEmptyOrNull

public static <K> <any> mapEmptyOrNull()

mapNotEmpty

public static <K> <any> mapNotEmpty()

limit

public static <T,I extends java.lang.Iterable<T>> <any> limit(int max)

contains

public static <I,T extends java.util.Collection<I>> <any> contains(I item)

all

public static <T,TT extends java.lang.Iterable<T>> <any> all(<any> attributeSatisfies)

Returns a predicate for a collection which is true if all elements in the collection given to the predicate which satisfies the predicate given here.

This will return true for the empty set. To require additionally that there is at least one use #quorum(QuorumCheck, Predicate) with QuorumCheck.QuorumChecks.allAndAtLeastOne().

any

public static <T,TT extends java.lang.Iterable<T>> <any> any(<any> attributeSatisfies)

Returns a predicate for a collection which is true if there is at least one element in the collection given to the predicate which satisfies the predicate given here.

quorum

public static <T,TT extends java.lang.Iterable<T>> <any> quorum(QuorumCheck quorumCheck,
                                                                <any> attributeSatisfies)

Returns a predicate for a collection which is true if the number of elements in the collection satisfying the predicate given here passes the QuorumCheck given here.