Package org.eclipse.collections.impl.collection.immutable

Class AbstractImmutableCollection<T>

java.lang.Object

org.eclipse.collections.impl.AbstractRichIterable<T>

org.eclipse.collections.impl.collection.immutable.AbstractImmutableCollection<T>

All Implemented Interfaces:

Iterable<T>, Collection<T>, ImmutableCollection<T>, InternalIterable<T>, RichIterable<T>

Direct Known Subclasses:

AbstractImmutableSet

public abstract class AbstractImmutableCollection<T>
extends AbstractRichIterable<T>
implements ImmutableCollection<T>, Collection<T>

Constructor Summary

Constructors

Constructor	Description
AbstractImmutableCollection()

Method Summary

Modifier and Type	Method	Description
boolean	add(T t)
boolean	addAll(Collection<? extends T> collection)
Collection<T>	castToCollection()	This can be overridden in most implementations to just return this.
RichIterable<RichIterable<T>>	chunk(int size)	Partitions elements in fixed size chunks.
void	clear()
<V> ImmutableBag<V>	countBy(Function<? super T,? extends V> function)	This method will count the number of occurrences of each value calculated by applying the function to each element of the collection.
<V> ImmutableBag<V>	countByEach(Function<? super T,? extends Iterable<V>> function)	This method will count the number of occurrences of each value calculated by applying the function to each element of the collection.
<V, P> ImmutableBag<V>	countByWith(Function2<? super T,? super P,? extends V> function, P parameter)	This method will count the number of occurrences of each value calculated by applying the function to each element of the collection with the specified parameter as the second argument.
<V> ImmutableMap<V,T>	groupByUniqueKey(Function<? super T,? extends V> function)	For each element of the iterable, the function is evaluated, and the results of these evaluations are collected into a new map, where the transformed value is the key.
Stream<T>	parallelStream()
Optional<T>	reduce(BinaryOperator<T> accumulator)	This method produces the equivalent result as Stream.reduce(BinaryOperator).
boolean	remove(Object o)
boolean	removeAll(Collection<?> collection)
boolean	retainAll(Collection<?> collection)
Spliterator<T>	spliterator()
Stream<T>	stream()
<V> ImmutableObjectDoubleMap<V>	sumByDouble(Function<? super T,? extends V> groupBy, DoubleFunction<? super T> function)	Groups and sums the values using the two specified functions.
<V> ImmutableObjectDoubleMap<V>	sumByFloat(Function<? super T,? extends V> groupBy, FloatFunction<? super T> function)	Groups and sums the values using the two specified functions.
<V> ImmutableObjectLongMap<V>	sumByInt(Function<? super T,? extends V> groupBy, IntFunction<? super T> function)	Groups and sums the values using the two specified functions.
<V> ImmutableObjectLongMap<V>	sumByLong(Function<? super T,? extends V> groupBy, LongFunction<? super T> function)	Groups and sums the values using the two specified functions.

Methods inherited from class org.eclipse.collections.impl.AbstractRichIterable

allSatisfy, allSatisfyWith, anySatisfy, anySatisfyWith, appendString, appendString, asLazy, collect, collectIf, collectWith, contains, containsAll, containsAllArguments, containsAllIterable, count, countWith, detect, detectOptional, detectWith, detectWithIfNone, detectWithOptional, flatCollect, forEach, forEachWith, forEachWithIndex, groupBy, groupByEach, groupByUniqueKey, injectInto, injectInto, injectInto, injectInto, injectInto, into, isEmpty, max, max, maxBy, min, min, minBy, noneSatisfy, noneSatisfyWith, reject, rejectWith, select, selectWith, sumOfDouble, sumOfFloat, sumOfInt, sumOfLong, toArray, toArray, toBag, toBiMap, toList, toMap, toSet, toSortedBag, toSortedBag, toSortedBagBy, toSortedListBy, toSortedMap, toSortedMap, toSortedMapBy, toSortedSet, toSortedSet, toSortedSetBy, toString, zip, zipWithIndex

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Collection

contains, containsAll, equals, hashCode, isEmpty, iterator, removeIf, size, toArray, toArray, toArray

Methods inherited from interface org.eclipse.collections.api.collection.ImmutableCollection

aggregateBy, aggregateInPlaceBy, collect, collectBoolean, collectByte, collectChar, collectDouble, collectFloat, collectIf, collectInt, collectLong, collectShort, collectWith, flatCollect, flatCollectWith, groupBy, groupByEach, newWith, newWithAll, newWithout, newWithoutAll, partition, partitionWith, reject, rejectWith, select, selectInstancesOf, selectWith, tap, zip, zipWithIndex

Methods inherited from interface org.eclipse.collections.api.InternalIterable

forEach, forEachWith, forEachWithIndex

Methods inherited from interface org.eclipse.collections.api.RichIterable

aggregateBy, allSatisfy, allSatisfyWith, anySatisfy, anySatisfyWith, appendString, appendString, appendString, asLazy, collect, collectBoolean, collectByte, collectChar, collectDouble, collectFloat, collectIf, collectInt, collectLong, collectShort, collectWith, contains, containsAll, containsAllArguments, containsAllIterable, containsAny, containsAnyIterable, containsBy, containsNone, containsNoneIterable, count, countBy, countByEach, countByWith, countWith, detect, detectIfNone, detectOptional, detectWith, detectWithIfNone, detectWithOptional, each, flatCollect, flatCollectBoolean, flatCollectByte, flatCollectChar, flatCollectDouble, flatCollectFloat, flatCollectInt, flatCollectLong, flatCollectShort, flatCollectWith, forEach, getAny, getFirst, getLast, getOnly, groupBy, groupByAndCollect, groupByEach, groupByUniqueKey, injectInto, injectInto, injectInto, injectInto, injectInto, injectIntoDouble, injectIntoFloat, injectIntoInt, injectIntoLong, into, isEmpty, makeString, makeString, makeString, makeString, max, max, maxBy, maxByOptional, maxOptional, maxOptional, min, min, minBy, minByOptional, minOptional, minOptional, noneSatisfy, noneSatisfyWith, notEmpty, reduceInPlace, reduceInPlace, reject, rejectWith, select, selectWith, size, summarizeDouble, summarizeFloat, summarizeInt, summarizeLong, sumOfDouble, sumOfFloat, sumOfInt, sumOfLong, toArray, toArray, toBag, toBiMap, toImmutableBag, toImmutableBiMap, toImmutableList, toImmutableMap, toImmutableSet, toImmutableSortedBag, toImmutableSortedBag, toImmutableSortedBagBy, toImmutableSortedList, toImmutableSortedList, toImmutableSortedListBy, toImmutableSortedSet, toImmutableSortedSet, toImmutableSortedSetBy, toList, toMap, toMap, toSet, toSortedBag, toSortedBag, toSortedBagBy, toSortedList, toSortedList, toSortedListBy, toSortedMap, toSortedMap, toSortedMapBy, toSortedSet, toSortedSet, toSortedSetBy, toString, zip, zipWithIndex

Constructor Details

AbstractImmutableCollection

public AbstractImmutableCollection()

Method Details

reduce

public Optional<T> reduce(BinaryOperator<T> accumulator)

Description copied from interface: RichIterable

This method produces the equivalent result as Stream.reduce(BinaryOperator).

Specified by:

reduce in interface RichIterable<T>

sumByInt

public <V> ImmutableObjectLongMap<V> sumByInt(Function<? super T,? extends V> groupBy,
 IntFunction<? super T> function)

Description copied from interface: RichIterable

Groups and sums the values using the two specified functions.

Specified by:

sumByInt in interface ImmutableCollection<T>

Specified by:

sumByInt in interface RichIterable<T>

sumByFloat

public <V> ImmutableObjectDoubleMap<V> sumByFloat(Function<? super T,? extends V> groupBy,
 FloatFunction<? super T> function)

Description copied from interface: RichIterable

Groups and sums the values using the two specified functions.

Specified by:

sumByFloat in interface ImmutableCollection<T>

Specified by:

sumByFloat in interface RichIterable<T>

sumByLong

public <V> ImmutableObjectLongMap<V> sumByLong(Function<? super T,? extends V> groupBy,
 LongFunction<? super T> function)

Description copied from interface: RichIterable

Groups and sums the values using the two specified functions.

Specified by:

sumByLong in interface ImmutableCollection<T>

Specified by:

sumByLong in interface RichIterable<T>

sumByDouble

public <V> ImmutableObjectDoubleMap<V> sumByDouble(Function<? super T,? extends V> groupBy,
 DoubleFunction<? super T> function)

Description copied from interface: RichIterable

Groups and sums the values using the two specified functions.

Specified by:

sumByDouble in interface ImmutableCollection<T>

Specified by:

sumByDouble in interface RichIterable<T>

groupByUniqueKey

public <V> ImmutableMap<V,T> groupByUniqueKey(Function<? super T,? extends V> function)

Description copied from interface: RichIterable

For each element of the iterable, the function is evaluated, and the results of these evaluations are collected into a new map, where the transformed value is the key. The generated keys must each be unique, or else an exception is thrown.

Specified by:

groupByUniqueKey in interface ImmutableCollection<T>

Specified by:

groupByUniqueKey in interface RichIterable<T>

See Also:

• RichIterable.groupBy(Function)

add

public boolean add(T t)

Specified by:

add in interface Collection<T>

remove

public boolean remove(Object o)

Specified by:

remove in interface Collection<T>

addAll

public boolean addAll(Collection<? extends T> collection)

Specified by:

addAll in interface Collection<T>

removeAll

public boolean removeAll(Collection<?> collection)

Specified by:

removeAll in interface Collection<T>

retainAll

public boolean retainAll(Collection<?> collection)

Specified by:

retainAll in interface Collection<T>

clear

public void clear()

Specified by:

clear in interface Collection<T>

chunk

public RichIterable<RichIterable<T>> chunk(int size)

Description copied from interface: RichIterable

Partitions elements in fixed size chunks.

Specified by:

chunk in interface RichIterable<T>

Parameters:

size - the number of elements per chunk

Returns:

A RichIterable containing RichIterables of size size, except the last will be truncated if the elements don't divide evenly.

countBy

public <V> ImmutableBag<V> countBy(Function<? super T,? extends V> function)

Description copied from interface: RichIterable

This method will count the number of occurrences of each value calculated by applying the function to each element of the collection.

Specified by:

countBy in interface ImmutableCollection<T>

Specified by:

countBy in interface RichIterable<T>

Since:

9.0

countByWith

public <V,
P> ImmutableBag<V> countByWith(Function2<? super T,? super P,? extends V> function,
 P parameter)

Description copied from interface: RichIterable

This method will count the number of occurrences of each value calculated by applying the function to each element of the collection with the specified parameter as the second argument.

Specified by:

countByWith in interface ImmutableCollection<T>

Specified by:

countByWith in interface RichIterable<T>

Since:

9.0

countByEach

public <V> ImmutableBag<V> countByEach(Function<? super T,? extends Iterable<V>> function)

Description copied from interface: RichIterable

This method will count the number of occurrences of each value calculated by applying the function to each element of the collection.

Specified by:

countByEach in interface ImmutableCollection<T>

Specified by:

countByEach in interface RichIterable<T>

Overrides:

countByEach in class AbstractRichIterable<T>

Since:

10.0.0

stream

public Stream<T> stream()

Specified by:

stream in interface Collection<T>

Specified by:

stream in interface ImmutableCollection<T>

Since:

9.0

parallelStream

public Stream<T> parallelStream()

Specified by:

parallelStream in interface Collection<T>

Specified by:

parallelStream in interface ImmutableCollection<T>

Since:

9.0

spliterator

public Spliterator<T> spliterator()

Specified by:

spliterator in interface Collection<T>

Specified by:

spliterator in interface ImmutableCollection<T>

Specified by:

spliterator in interface Iterable<T>

Since:

9.0

castToCollection

public Collection<T> castToCollection()

Description copied from interface: ImmutableCollection

This can be overridden in most implementations to just return this.

Specified by:

castToCollection in interface ImmutableCollection<T>

Since:

9.0