net.hydromatic.lambda.streams

Interface MapStream<K,V>

All Superinterfaces:

Iterable<BiValue<K,V>>

All Known Implementing Classes:

MapStream.AbstractMapStream

public interface MapStream<K,V>
extends Iterable<BiValue<K,V>>

A stream of two element tuples. Depending on the source either of the tuple elements may be unique.

(Based upon java.lang.MapStream coming in JDK 8.)

JDK 1.7 does not have the mechanism for adding default implementations of interface methods. Therefore each class that implements this interface has to implement each method. To see the default implementation of each method, see the implementation in MapStream.AbstractMapStream. It is not required that an implementing class extend AbstractMapStream. The methods in AbstractMapStream call static methods in MapStream.Impl, so it should be straightforward to reuse implementations.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	MapStream.AbstractMapStream<K,V>
static class	MapStream.BiVal<K,V>
static class	MapStream.Impl

Method Summary

Modifier and Type	Method and Description
boolean	allMatch(BiPredicate<? super K,? super V> predicate)
boolean	anyMatch(BiPredicate<? super K,? super V> predicate)
Iterable<BiValue<K,V>>	asIterable()
MapStream<K,Iterable<V>>	asMultiStream()
MapStream<K,V>	filter(BiPredicate<? super K,? super V> predicate)
MapStream<K,V>	filterKeys(Predicate<K> filter)
MapStream<K,V>	filterValues(Predicate<V> filter)
void	forEach(BiBlock<? super K,? super V> block)
BiValue<K,V>	getAny()
BiValue<K,V>	getFirst()
BiValue<K,V>	getOnly()
Iterable<K>	inputs()
<A extends Map<? super K,? super V>> A	into(A destination)
<A extends Map<? super K,C>,C extends Collection<? super V>> A	intoMulti(A destination, Factory<C> factory)
boolean	isEmpty()
<W> MapStream<K,W>	map(BiMapper<K,V,W> mapper)
<W> MapStream<K,W>	mapValues(Mapper<V,W> mapper)
<W> MapStream<K,Iterable<W>>	mapValuesMulti(BiMapper<? super K,? super V,Iterable<W>> mapper)
MapStream<K,V>	merge(MapStream<K,V> other)
boolean	noneMatch(BiPredicate<? super K,? super V> predicate)
MapStream<K,V>	sorted(Comparator<? super K> comparator)
MapStream<V,K>	swap()
Iterable<V>	values()

Methods inherited from interface java.lang.Iterable

forEach, iterator, spliterator

Method Detail

isEmpty

boolean isEmpty()

inputs

Iterable<K> inputs()

values

Iterable<V> values()

asIterable

Iterable<BiValue<K,V>> asIterable()

getFirst

BiValue<K,V> getFirst()

getOnly

BiValue<K,V> getOnly()

getAny

BiValue<K,V> getAny()

asMultiStream

MapStream<K,Iterable<V>> asMultiStream()

forEach

void forEach(BiBlock<? super K,? super V> block)

filter

MapStream<K,V> filter(BiPredicate<? super K,? super V> predicate)

filterKeys

MapStream<K,V> filterKeys(Predicate<K> filter)

filterValues

MapStream<K,V> filterValues(Predicate<V> filter)

map

<W> MapStream<K,W> map(BiMapper<K,V,W> mapper)

mapValues

<W> MapStream<K,W> mapValues(Mapper<V,W> mapper)

mapValuesMulti

<W> MapStream<K,Iterable<W>> mapValuesMulti(BiMapper<? super K,? super V,Iterable<W>> mapper)

into

<A extends Map<? super K,? super V>> A into(A destination)

intoMulti

<A extends Map<? super K,C>,C extends Collection<? super V>> A intoMulti(A destination,
                                                                         Factory<C> factory)

anyMatch

boolean anyMatch(BiPredicate<? super K,? super V> predicate)

allMatch

boolean allMatch(BiPredicate<? super K,? super V> predicate)

noneMatch

boolean noneMatch(BiPredicate<? super K,? super V> predicate)

sorted

MapStream<K,V> sorted(Comparator<? super K> comparator)

swap

MapStream<V,K> swap()

merge

MapStream<K,V> merge(MapStream<K,V> other)